alvand cable tray & cable ladder
DESCRIPTION
Cable Tray Cable Management Solutions ALVAND CABLE TRAY & LADDER Co. T: +98 (21)22 64 61 98 , 22 64 61 97 | F: +98 (21)22 64 27 89 [email protected] | www.alvand-co.com Support Systems & Solutions A.L. Support Systems & Solutions A.L. Cable Management Solutions A.L. Cable tray systems Cable tray systems Cable tray systemsThe comprehensive Alvand cable tray rangeconsists of three systems ranging from the lightduty non-return flange cable tray to two systems with cable-friendly return flange trays,medium duty 25mm deep and heavy duty50mm deep. The unique perforation pattern allows ease ofattachment of cables with more than adequateventilation. The side walls of the medium andheavy duty ranges are also slotted as standard.Light duty cable trays are available in widths of50, 75, 100, 150, 225 and 300mm. Medium dutytrays are available in widths of 50, 75, 100,150,225, 300, 450 and 600mm. Heavy duty trays areavailable in widths of 75, 100, 150, 225, 300,450, 600, 750 and 900mm wide.Each type of tray is a total system with a wideselection of support accessories to providecomprehensive site installation solutions. Loading graphsSafe working loads are represented graphically as shownand are based on the cable tray being continuous overfour spans or more. Deflection has been limited toSPAN/200 generally, based on the end span condition asthe worst case. Deflection will be less than this on internalspans. However, on wider trays, additional deflection willbe induced locally across the base of the tray, dependingon the width of the tray and the load distribution acrossthe width. This will not be detrimental to the structuralperformance of the tray but may need consideration ifappearance is of prime importance.Bespoke systemsIn addition to standard cable tray systems, Alvand has theability to manufacture non standard cable tray systems toorder. Due to sophisticated equipment and software, prototypescan be produced quickly for sample approval.It is important for customers to issue the complete order atthe outset to allow full use of materials and avoidexpensive waste. ALVAND cable trays are manufactured onsophisticated CNC equipment in a world classmanufacturing cell engaging a high level ofautomation for fast moving items.This allows ALVAND to maintain a very high level of on time in full delivery performance.Comprehensive stocks of cable trays andaccessories in both pre-galvanised and post hotdip galvanised finish are carried at all times toensure timely delivery.Development and testing ALVAND cable tray systems have been fullytested to develop accurate loading graphs.Further verification tests have also been doneunder the requirements of BS EN 61537:2007 Cable management cable tray systems andcable ladder systems. These tests includeimpact resistance, marking, connection of re-usable components, safe working load tests,electrical continuity, and performance of steel atextreme temperature ranges.ALVAND cable tray systems have been developedafter significant consultation with major installers.This ensures the systems meet and surpass keyrequirements providing innovative and costeffective solutions in an increasingly demandingmarket SPAN m SPAN mTRANSCRIPT
ALVAND CABLE TRAY & LADDER CO.
ENGINEERING AND DESIGN FOR
CABLE TRAYS, CABLE LADDERS AND ACCESSORIES
TECHNICAL SPECIFICATION
(QUALITY RECORD BOOK)
CLIENT : Pars Phenol Company
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Contents:
1 - Introduction
2 - Object
3 - Scope of Supply Equipment and Services Provided By the Supplier
3.1 - Equipment and Services
3.2 - Provided By the Buyer
6.1.1 - Metallic tray
6.1.2 - Brackets
8.1 GENERAL
8.2 INSPECTIONS AND TESTS
4 - Codes and Standards
5 - Site Conditions
6 - Design, Material & Manufacture
6.1 - Cable Tray
6.1.3 - Connections pieces between cable tray
6.2 - Conduit System
6.2.1 - Conduit
6.2.2 - Installation in classified hazardous area
6.2.3 - Buried ducts
6.3 - JUNCTIONBOXES
6.4 - Materials
7 - Marking
8 - Quality Control, Testing And Inspection
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10.1 - CABLE TRAY AND CONDUITS DATASHEETS
11 - Definitions and abbreviations
12 - Environment
13 - Installation of the system
14 - Technical information
15 - Packaging and transportation
16 - Frequently Asked Questions
17 - About us
18 - Contact Us
9 - Documentation9.1 Documentation Part of the Bid
9.2 DOCUMENTATION AFTER AWARD
9.3 DRAWINGS AND DOCUMENTS
9.4 FINAL TECHNICAL DOCUMENTATION
10 - Annex
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1 - Introduction
These guidelines will be particularly useful for the design, specification, procurement,
installation and Maintenance of these systems.
2 - Object
It is indicate any error of this specification or any possible alternative that suppose a technical or
economic improvement.
All the mentioned or attached documentation to this specification shall be considered as a part
of the specification.
This publication is in
NEMA VE 1-2009 & IEC 61537
tended as a practical guide for the proper and safe* installation of cable ladder
systems, cable tray systems, HVAC Channel Support Systems, channel support systems and
associated supports. Cable ladder systems and cable tray systems shall be manufactured in
accordance with , channel support systems shall be manufactured
in accordance with NEMA. It is recommended that the work described be performed by
a competent person familiar with standard electrical installation practices, electrical
equipment, and safety of electrical wiring systems.
Cable ladder systems and cable tray systems are designed for use as supports for cables and not
as enclosures giving full mechanical protection. They are not intended to be used as ladders, walk
ways or support for people as this can cause personal in query and also damage the system and
any installed cable.
This specification defines the conditions and requirements for the design , supply , manufacturing ,commissioning and testing, transport, unloading, assembly and commissioning, testing on site
and guarantee of Cable Trays and Conduits to be installed with the features and service
conditions stated in this document and in the attached documentation.
The Equipment designed and rated in accordance to standards, site conditions and data specified.
All those works, materials and services in general, not specifically indicated in the text or shown
in attached documentation and necessary for the correct operation of the equipment. It is supplier
responsibility to meet those technical details with the state of the art.
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3 - SCOPE OF SUPPLY
The scope of supply for the trays and conduits is designing, manufacturing, testing and inspection,
delivery and guarantee. (2 years after COD).
Trays, Ladders, Accessories and conduits supply as are detailed in this specification and in
annexed documentation.
Compliance with this specification relieve the supplier from his responsibility of
supplying appropriate design and correct construction, fully adaptable to the specified operating
conditions and also reliable as regards its mechanical and operating performances.
Trays, Ladders, Accessories and conduits will be supplied complete, tested in factory and ready to
be installed in accordance to the requirements of this specification and the attached
documentation.
It is included in the supply the specific engineering associated to the design and manufacturing of
the tray and conduit, according to the following detailed scope.
Documentation attached to the bid, include the following:
Technical and economical bid with unitary prices per item (lineal meter, etc.)
Data sheets, right filled by the supplier.
Manufacture and test planning and delivery dates.
Material’s inspections and test at factory.
Quality certificate.
Packaging, transport and insurance.
Documentation’s delivery in set terms.
Special tools (if applicable).
Guaranties.
These are supply parts:
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Catalogues and technical reports which the Bidder considers necessaries for
the supply’s right understanding.
Acceptance and/ or exceptions to the specification.
Any contradiction between this document and the document “DATA SHEETS CABLE TRAY AND
LADDER” and with the applicable standards to comply with the Object of this document,
communicated to the purchaser.
3.1 - EQUIPMENT AND SERVICES PROVIDED BY THE SUPPLIER
Supplier equipment of the final cleaning, painting, packing and issue.
The supplier, facilitate to the buyer the necessary means for the fulfilment of the inspection points
program to be agreed between both parts. The buyer shall be also free to inspect the supplier
or their subcontractor`s facilities to verify correct development of the programmed activities.
The supplier is the only responsible of the supply of the equipment and services covered by present
specification. If the supplier wished to subcontract part or totality the supply, it shall be supplier
responsibility the transmission of all requirements of the present specification, and all relevant
documents to subcontractors, and the fulfilment of them.
3.2 - EQUIPMENT AND SERVICES PROVIDED BY THE BUYER
The supplier shall be the responsible of the manufacture and supply of the equipment and
accessories indicated in the data sheets.
The supplier include within its supply all the necessary documentation regarding dimensional
drawings, mounting drawings, installation and commissioning instructions, inspection
instructions and manufacturing programs, in addition to examinations and tests certificates. It
included within the scope all documentation that assure the fulfilment with the applicable
regulation.
The buyer or its organization on site shall be the responsible of the unloading, storage, assembly
and commissioning of the supplied equipment.
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Except where otherwise stated in the Specification, design, engineering, equipment and
materials, installation and performance of electrical facilities, conforming the requirements of the
latest edition of the following codes and regulations:
electrical installations and threads for conduits and fittings
- IEC 60068-2-75 Environmental testing. Hammer test
- IEC 60364-5-52 Electrical installations in building
- IEC 61386 Conduit systems for electrical installations
- IEC 60695 Fire hazard testing
- EN ISO 1461 Hot dip galvanized coatings on fabricated iron and steel articles.
Specifications and test methods
- EN ISO 12944 Paints & Varnishes – Corrosion Protection of Steel Structures by protective
paint systems
- ISO 4628 Paints and varnishes. Evaluation of degradation of coatings.
All units used in this documentation, procedures, and tests, in accordance with the International
System of Units (IS).
Required specifications and quantities of each component are shown in attached lists. Vendor is
requested to send all required information and items noted in the above mentioned list with his
proposal.
- Institute of Standards & Industrial Research of Iran (ISIRI)
- IEC International Electro technical Commission
- IEC 61537 Cable management. Cable tray system and cable ladder system
- IEC 60423 Conduit systems for cable management. Outside diameters of conduits for
4 - CODES AND STANDARDS
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Consultant : VENDOR :
CLIENT :
DOC No. : Quality Control Plan (QCP) /
ITEM Document RESULT
buy sheet
produce
cutting confirmed by drawing
cutting weight test confirmed by drawing
cutting height test confirmed by drawing
punching confirmed by drawing
bending approved by drawing
length of the bending ladder on plans
width of the bending ladder on plans
height of the bending ladder on plans
length of the bending trays on plans
width of the bending trays on plans
height of the bending tray on plans
welding ladder on plans
welding tray on plans
welding test
all parts were plated
thickness of the galvanized layer
congestion of wires in ducts
quality plating
plating certificated
conformity of tray with MTO list
conformity of ladder with MTO list
mounting of tray/ladder at the appropriate height
sharp parts
thickness of tray/ladder
Quality Control Plan (QCP)
Quality sheet
thickness sheet confirmed by drawing
cross-section of sheet
license sheet
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ITEM Document RESULT
produce
easy close/open for nuts and screws
tightness of bolts used in tray/ladder
digressions of tray / ladder based on drawing
tightness of bolts used in tray/ladder
sufficient space for end parts
tightness of bolts used in mechanical parts
security covers
test
mechanical resistance of the tray/ladder
Appearance of device and parts with regard to Cracks, breakage, external/proper. installations
packing
easy reading of the labels
labeling and numbering of devices
necessary arrangements for transportation
manufacture's name plate
other plate and signs
installation & operation manual
other marking and signs specified in the contract
other agreed items
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5 - SITE CONDITIONS
For the design, manufacture and package the following conditions are considered: Data relating
to the environment, site and tools required for use in the climate of the Islamic Republic of Iran
will be applied.
Design, material and manufacture requirements and characteristics demanded to the equipment
inside the scope of supply are hereafter described.
1) Ambient air temperature Range : -9 to +41.5ºC Equipment exposed to sunlight : +85ºC
2) Elevation 495m Above Sea level
3) Relative humidity Min. 66 % Max. 83 %
4) Barometric pressure 0.955 bar(a)
5) Atmosphere Dusty & Corrosive with Sandstorm
6) Electric Supply: Power (M.V.) : 6000V, 50Hz, 3Ph Power (L.V.) : 380V, 50Hz, 3Ph Control : 220V AC Instrument 4-20 mA
7) Area Classification Safe (Nonhazardous)
8) Seismic Condition VII according to MSK scale or Mercalli
9) Average Wind velocity 32 m/s (At 10m above ground level)
6.1.1 - Metallic Trays
Coatings on fabricated iron and steel articles Hot-dip-galvanized (EN ISO 1461).
6 - Design, Material & Manufacture
6.1 - Cable Trays
Cable trays and their accessories supplied with a galvanic coating (except screws works and joint
plates that will be of stainless steel). Stainless steel shall be used in saline atmospheres.
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Minimum plus a coating corrosive protection according to the standard ISO 12944-5
for a corrosive ambient C5M with a high durability level (> 15 years).
Trays supplied in nominal lengths of 3000 mm, manufactured in steel.
The trays appear in lineal sections, concave and convex bends, tee's, derivations, crosses,
reductions, etc.
The profiles of the main spars of the tray, secondary crosspieces and all the auxiliary pieces, have
constructed so that alive edges nor songs do not exist, to eliminate the danger of a possible
damage the cable, when carrying out their laying.
In case of having metal division walls in cable ways, they shall have a minimum thickness of 1.5
mm and the finish shall be of the same quality as the tray. This fastening system for the tray
division walls shall not cause long term corrosion or electrolytic actions and shall be such that
division walls may not be inadvertently displaced.
The trays will be connected to ground and with a perfect electrical continuity between the
different sections.
Cable tray shall keep without failure 1.7* admissible load according to IEC 61537.
The manufacturer's standard accessories used for bend joints, angles, curves, intersections and
routes to avoid mechanical obstructions, pipes (mechanical: fluid, gas, etc.) or architectonic
elements. Trays shall not be cut or twisted to shape flanges or other fastening or connection
elements.
The partitions contain holes or slots so that they shall be able to be mounted onto the cable tray.
The top of the partition shall not be higher than the top of the cable tray sides and shall be suitably
Considering the permanent working load of the cables and the dead weight of the cable tray, in
accordance with IEC 61537 the maximum longitudinal deflection to be less than 1% of the
distance between the brackets and the maximum transversal deflection to be less than 5% of the
cable tray width.
Connection to walls and to ceiling carried out by interposing steel beams to allow reasonable
adjustment during the erection.
The accessories, including vertical and horizontal bends, intersections, T-joints, uprights and
sectional reductions made by the manufacturer of the tray. There shall be only one manufacturer
of the tray and accessories for the project.
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The bending radius of the curve of the trays consistent in keeping with the bending
radius of the biggest cable it contains.
The fasteners used to secure the tray and accessories be the cause of long term rust and
electrolytic action black varnished fastening screws shall not be used.
When arms are used for suspension, they built with wrought steel angles or iron brackets with
the same quality finish as the tray.
Trays assembled in a horizontal or vertical position and on surface. The two types of cable tray
that are going to be used in the installation are:
Mesh-wire cable trays:
These shall be used in main sections for power, lighting and control cables, both horizontally and
vertically.
The thickness of the standard trays and accessories for the control cable system and power cable
system shall be enough to support the loads required, minimum 4 mm.
They have a double bar without edges, It shall be possible to mount covers and division walls.
The width of the trays 100, 200, 300, 400, 500 and 600 mm and their wing clear height 60 mm
and 100 mm, as appropriate.
Cable Tray, Cable Ladder:
Ladder type trays for cables robust, and made of steel.
Ladder cable trays shall be used for heavy power cables and long ways.
The thickness of the standard trays and accessories for the control cable system and power cable
system shall be enough to support the loads required, minimum 2 mm.
The thickness of the standard Ladders and accessories for the control cable system and power
cable system shall be enough to support the loads required, minimum 2 mm.
The width of the Cable trays shall be 50, 100, 150, 200, 250, 300, 350, 400, 450, 500, 550, 600,
650, 700, 800, and 900 MM and their wing clear height shall be 40, 60, 80, 100, 110, 120, 150,
200, and 250 MM as appropriate.
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The width of the Cable Ladders 100, 150, 200, 250, 300, 350, 400, 450, 500, 550, 600,
650, 700, 800, and 900 MM and their wing clear height shall be 60, 80, 100, 110, 120, 150, 200,
and 250 MM as appropriate. The space between cross beams 250 and 300 mm.
The joint between cross beams and length beams (rung) made by Co2 electrical welding.
The section of cable trays and accessories linked according to the recommendations of the
manufacturer or alternatively by using mushroom head anchor bolts, nuts and washers. In cases
where the recommendations of the manufacturer preclude the use of anchor bolts, the alternative
methods presented to the purchaser for review prior to establishing the orders for trays and
accessories.
6.1.2 - Brackets
Brackets able for assembling on wall, on roof and over the floor.
The brackets shall be installed at regular intervals according to the recommendations of the
manufacturer, with a maximum distance in straight sections of 2000 mm between them or
shorter distances, according to weight loading and deflection on cable tray. In cases with bends,
T-joints, intersections, uprights or angles, additional fasteners shall be fitted at a distance not
exceeding 150 mm on each side of the accessory.
The brackets designed in compliance with the prescriptions of Standard IEC 61537. When the
brackets are loaded with cable trays full of cables, with a working evenly distributed load, the
maximum amount the free end shall be able to be lowered not more than 1/20 mm of the length
of the bracket itself.
The fasteners and supports shall be produced based on specific structures and accessories for the
assembly.
The supports of trays shall be constructed, preferably, on the basis of plate profiles laminated, of
first quality, minimum thickness 2.5 mm, properly studied with independent elements (stringers,
crosspieces, braces, etc.) of easy assembly by means of staples and screws, that is adaptable to
variations that can arise in the installation; Or by manufacturer standard supports proven that
their design can manage the expected loads. Those supports shall be made from galvanized steel
sheet. By this last reason, stiffener-supports shall be able to be unified in lengths of 1500, 2000
and 3000 mm for the different possibilities.
The supports shall be able to make with standardized profiles.
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The average separation between consecutive supports shall be of 2 m (ladder tray)
and 1.5 m (mesh tray).
In the accessories destined to changes of direction (bends, tees, etc.), the curved part shall be
formed by circumference arcs, never by polygonal. The straight part of these pieces destined to
the connection shall have a length of 100 mm.
When the location conditions require on-site manufacture, purchaser shall review the proposals
before manufacture, as well as the manufacturing standard and the finish standard, which shall
not be inferior to the manufacturer's standard.
6.1.3 Connections pieces between cable trays
The screws, pins, nuts and washers shall be stainless steel. The corresponding thickness shall be
the indicated in the standards.
The connections cover the entire internal surface of the tray and designed so that the
general section of the channel fits the connection joints exactly.
The cable trays and accessories shall be in a continuous way linked, electrically and mechanically
throughout their length and connected to the earthing system.
The joints in trays shall be made so that electric continuity between all the sections and elements
of the cable way is assured.
6.2 - CONDUIT SYSTEM
6.2.1 - Conduit
These shall be preferably halogen free, rigid, impact resistance: type 3 (2J), ultraviolet trays
resistant, self-quenching, and non-flame spreading and fire resistant. The smoke produced shall
not be toxic or corrosive.
In the event that the conduit is installed in a corrosive area, the conduit material shall be corrosion
resistant or the conduit shall be adequately protected against corrosion. Combinations of metals
that can lead to galvanic corrosion shall be avoided.
The diameter of conduits shall go from a minimum of ½” up to a maximum of 6”.
The inner surface of the pipes shall be smooth and free of edges and roughness in order to prevent
damage to the insulation of the cables.
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For feeding equipment's which shall drive vibrations or equipment's in high
temperature areas, flexible halogen free conduits shall be used.
All conduits shall be of sufficient size to permit the easy pulling in or removal of any one cable
while others are in place.
The ends of conduits and union pieces have to be refined to eliminate the fins and sharp borders.
Inner surface will also be free of fins or other type of defects that can damage the cables.
The ends of conduits will be protected by means of plastic pieces, in order to avoid the entrance
of dirt or humidity during storage, transport and unloading of conduits.
For both types, there shall be suitable screw couplings and bends.
No section of cable shall be visible, and the appropriate bended accessories, reductions, joint
sleeves, etc., shall be used to this end.
Pipes shall be duly fastened to horizontal and vertical facings using appropriate elements and at
the correct distance.
Connection to boxes shall be made with appropriate pieces
6.2.2 - Installation in classified hazardous area
The conduits for those areas made of stainless steel AISI 316 and suitable for those kind of areas.
When flexible conduits shall be needed, those shall be made of stainless steel corrugated material
and characteristics similar to rigid ones.
The conduit in hazardous areas shall be provided with sealing fittings.
After cables are installed in the conduit, sealing fittings shall be filled with a compound which
does not shrink on setting and is impervious to, and unaffected by, chemicals found in the
hazardous area. The sealing fittings and compound are used to limit the pressure piling effect, to
prevent hot gasses from entering the conduit system from an enclosure containing a source of
ignition, and to prevent the entrance of hazardous gas into the non-hazardous area.
The depth of the compound in the sealing fitting shall be at least equal to the internal diameter
of the conduit.
To meet the degree of protection requirement of the enclosure, it may be necessary to seal
between the conduit and the enclosure (for example by means of a sealing washer or thread
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sealant) and between the conductors and the conduit (for example by means of a
sealing fitting).
6.2.3 - Buried ducts
Tubes or ducts of polyethylene, double wall, corrugated externally and smooth internally shall be
used Red color shall be chosen as standard for connection between ducts, sleeves shall be used.
Ducts shall be supplied in nominal lengths of no less than 6 m.
6.3 - JUNCTION BOXES
Distribution boxes made of glass fiber reinforced polyester resin or Aluminum. They have
terminals, fixing accessories, cable glands and any necessary element for the correct execution.
They non pro purgatory of fire and flame.
Junction boxes provided with sufficient internal space for connecting the cables.
A minimum spare of 20% of terminals provided.
Every distribution boxes for wall or structure mounting. Any necessary fixing accessories shall be
provided.
For the connection to distribution boxes and motors, flexible conduit and appropriate connectors
shall be used. For special cases, cable glands shall be used.
Each distribution box shall have an identification nameplate, placed in the outside part of the
cover.
The IP degree, IP65 for indoor and IP67 for outdoor.
6.4 - MATERIALS
All the materials used in the manufacturing of the assembly new, without deterioration,
appropriate for the work.
7 - MARKING
Each cable tray and conduit marked with a plate, identifying its number and use.
The final design of plates of group of cable trays and conduits and of each individual element
approved by the client.
Identification plates placed in a visible place.
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7 - PACKAGING AND TRANSPORT
Prior to deliver, the test results have been approved and packaging agreed.
Trays and conduits appropriately protected for the transportation and temporary storage.
Conduits ends adequately protected with plastic caps.
Supplier will fix unloading and storage conditions at site, including unloading means, auxiliary
labor and indoor and outdoor maintenance instructions.
Normally the full transport per package should not exceed 1500 mm from its lowest point.
Contractor is responsible for ensuring that transport of the Tendered package is possible
along the available routes.
8 - QUALITY CONTROL, TESTING AND INSPECTION
8.1 GENERAL
All the equipment's supplied in accordance with this specification will have to be checked,
inspected and tested in accordance with the defined requirements of codes and standards. The
equipment will not be considered finished until factory and onsite inspections, tests and plant
commissioning are finished successfully.
The Client , the buyer and/or his representative can be will have free entry in the workshops and
buildings of the factory, during manufacturing period, in order to witness in each moment
materials, work processes, inspections and tests.
The supplier will give all the means for inspector checks the equipment, and will give without
paying the materials necessary for the inspections. The supplier give any information inspector
asks for about supply.
The supplier will advise 7 days before the tests dates.
If after the tests, any part of the equipment supplied does not operate in good conditions
or does not get the guarantee values, the supplier will replace or modify the faulty parts until
achieving the desired results.
These tests do not excuse the supplier from obligations respect the guarantees in the material.
The approval of materials by the client or his representative does not excuse the supplier from the
responsibility by the defects in material.
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When the tests have finished satisfactorily and the client gives the written approval,
the supplier will be able to send the equipment to site.
In general, for tests which aren’t indicated in this specification, the chapter of tests in the
standards approved by the client will be used.
Type or special tests which have been carried out to prove the quality of trays , ladder and
conduits, supported by a Certificate to the purchaser approval, giving the description, location,
date and results of the tests authority
8.2 INSPECTIONS AND TESTS
Test shall be carried out on the trays in accordance with clauses 5, 10, 11, 13 and 14 of IEC 61537-
2, unless otherwise specified below.
Test shall be carried out on the conduit systems in accordance with clauses 5, 10, 11, 12 (only for
non-metallic conduits), 13 and 14 of IEC 61386, unless otherwise specified below.
Test and inspection include but not necessarily be limited to:
1) Visual inspection and dimensional check
2) Performance and function test
3) Manufacturer routine test
4) Others specified in codes and standards
The final approval of test results resides with client.
SYMBOL AND DEFINITION
SYMBOL DEFINITION SYMBOL DEFINITION
W WIDTH UP UP RISER
H HEIGHT DC DOWN COMMER
L LENGTH EP END PLATE
TE TEE ST Straight joint
BT BRANCH TEE CONNECTION AJH
AJV
ADJUSTABLE JOINT H: HORIZONTAL
V:VERTICAL CR CROSS
EL ELBOW
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9 - DOCUMENTATION
The documentation to be issued with the trays, ladders and conduits is described hereafter. The
list shows the minimum requirements for the documentation, so that any additional
documentation considered as necessary will be added to this list.
The English language used for all drawings and documents. All documentation must be clearly
identified according to plant code specification.
9.1 - DOCUMENTATION PART OF THE BID
The bid include all documentation requested in the Commercial Part of this requisition, as well as
the following ones:
- Technical data sheets attached to this specification duly completed
- Written acceptance of the specification
- List of Exceptions to Technical Specification.
- Transportation description
- Catalogues and technical notes that the considers interesting for a correct understanding
of its scope of supply
- Detailed planning of the scope of supply.
- Quality certificate
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9.2 – DOCUMENTATION AFTER AWARD
The supplier hand over at least the following documentation. The schedules for the
documentation handling are indicated in the table below.
DOCUMENT
Quality Control System description and Inspection
Points Plan
Detailed characteristics of each element and brochures
Datasheets
Final datasheets
Test reports and Certifications
Manufacturing, tests and commissioning planning
Quality Dossier, and Inspection Points Plan fulfilled
Supplier guarantees
Lists:
Material and component list, including reference, type,
function and manufacturer
Instructions and procedures:
Tests procedures
Erection and commissioning instructions (if any
special)
Transport, storing and handling instructions
All documentation clearly identified according to the Purchaser´s code specification, based on the
Plant code specification. During the kick-off meeting the bidder will submit to the final Contractor
the code specification.
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9.3 - DRAWINGS AND DOCUMENTS
We will be responsible for carrying out the plans and documents, and their emissions, as well as
to respond to the comments made by the customer during the review.
The review and approval of plans or documents by the client release the supplier of their
responsibilities on design flaws or other, which may appear later.
All drawings, diagrams, etc., comply with the approved format for the project.
Drawings to scale and fully detailed with the size of A3. Major dimensions given and the material
of which each part is to be constructed indicated, if possible.
Drawings black lines on a white background, with revisions clearly marked, and prepared on
AutoCAD V.2013.
All documents produced specifically for the project in Word, Excel and PDF format.
The documents will employ the equipment numbering scheme based on the plant code
specification.
The title block drawings prepared in the English language.
The title block contain the following minimum information:
- Project designation
- Employer's contract numbers
- Manufacturer's name (when applicable)
- Manufacturer's drawing number (when applicable)
- Brief title (clearly defining content of drawing)
- Revision number and revision date
- Scale and scale bar (when applicable)
- North arrow (when applicable)
A revision column adjacent to the title block define briefly the revisions made for each revision
number. All revisions and changes on a document marked (e.g. by "clouds"), such that they can
immediately be identified.
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The Contractor submit to the Employer, all drawings in electronic and master hard
copy format and, for as built drawings, in native electronic format.
All scripted documents A3 manuals etc. provided in hard copy format from the master and
searchable electronic format.
The Contractor provide client / representatives with monthly progress reports and list of sub-
orders monthly updated and submit these data to client/representatives not later than the end of
each related month.
Monthly Project Reports
The Contractor incorporate the following elements into the monthly report.
- Executive summary
- All activities completed during the previous month
- A tabulation and analysis of activities that were not completed as scheduled and plans for
schedule recovery
- Activities scheduled for completion during the coming month
- Major material manufacturing, shipping and delivery status to highlight problems and corrective
measures
- Invoice and Project variation status
- Engineering and construction progress, both forecasted and actual (project S- curves)
- An assessment of the project status.
- All reportable environmental incidents
- Photographs
- Critical line analysis
Operation and Maintenance instruction Manuals
Numbered, or lettered, plastic or reinforced paper tabs mounted on reinforced paper or plastic
sheets, inserted to identify the start of each major section of the manual. Tabs extend
approximately 1 cm from the face of the paper sheets and staggered to allow easy identification.
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Numbering or lettering of tabs in accordance with a detailed index which inserted at
the front of the manual.
The AS Built documents shall also include equipment and materials certificates, manufacturer's
manuals, test protocols, and all documents necessary for submission to the Third party experts.
10 - ANNEX
10.1 - Cable Tray, Cable Ladder and Datasheets.
11 - Definitions and abbreviations
Accessory
Component used for a supplementary function e.g. to join two components together, clamp or fix
to walls, ceilings or other supports, covers and cable retainers
Associated supports
Bespoke supports for cable tray and cable ladder other than BS 6946 channel supports
Cable cleats
Used within an electrical installation to restrain cables in a manner that can withstand the forces
they generate, including those generated during a short circuit.
Cable ladder
System component used for cable support consisting of supporting side members, fixed to each
other by means of rungs.
Cable ladder system
Assembly of cable supports consisting of cable ladder lengths and other system components
Cable ties
Is a type of fastener, especially used for binding and organizing several cables or wires together or
to a cable management system.
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Cable tray
System component used for cable support consisting of a base with integrated side members
or a base connected to side members.
Note: cable tray includes perforated tray and wire mesh.
Cable tray system
Assembly of cable supports consisting of cable tray lengths and other system components
Channel support systems
A light structural support system usually consisting of steel channel section (strut), steel brackets,
channel nuts and set screws
Note: channel support systems comply with BS 6946
Coefficient of linear expansion
The change in length per unit length per unit rise in temperature expressed in degrees -1 c
Competent person
Person who possesses sufficient technical knowledge, relevant practical skills and experience for
the nature of the work undertaken and is able at all times to prevent danger and, where
appropriate, injury to him/herself and others
Damage
With relation to cable management can be represented by broken welds, severely deformed
/ buckled sections
Deflection
The elastic movement of the section as a result of imposed loading
Eccentric loads
A load imposed on a structural member at some point other than the centroid of the section.
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Electrical continuity
The ability of a system to conduct electricity within prescribed impedance limits
Electromagnetic compatibility
A system’s ability to neither radiate nor conduct electromagnetic energy in such a manner as to
cause unwanted effects
Equipotential bonding
Electrical connection maintaining various exposed-conductive-parts and extraneous-conductive-
parts at substantially the same potential
Fitting
System component used to join, change direction, change dimension or terminate cable tray
lengths or cable ladder lengths.
Fixings
Nuts, bolts, washers etc.
(Internal fixings are used for connecting system components together as recommended and
supplied by the cable support system manufacturer) (External fixings are used for connecting
system components to an external structure and are not normally supplied by the cable support
system manufacturer)
HDG
Finish Steel hot dip galvanized after the product is manufacture. Imposed load any load other
that the weight of the structure itself. (Imposed loads can include electrical cables and
equipment, wind, ice and snow).
MICC (cable)
Mineral insulated copper clad Non-metallic System which consists of UPVC (Un plasticized
Polyvinyl Chloride) or GRP (Glass Reinforced Polymer)
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PG finish
Steel pre-galvanized before the product is manufactured
Point load
A concentrated load at a single point
Safe working pull out load
The maximum allowable load on a channel nut connection when applied perpendicularly to the
strut length
Safe working slip load
The maximum allowable load on a channel nut connection when applied parallel to the strut
length
Span
Distance between the centers of two adjacent support devices
SWL (Safe working load)
Maximum load that can be applied safely in normal use
UDL (Uniformly Distributed Load)
Load applied evenly over a given area
Cable Trays
A cable tray system is used in the electrical wiring of buildings to support insulated electric cables
used for power distribution and communication. Cable trays are used as an alternative to open
wiring or electrical conduit systems, and are commonly used for cable management in commercial
and industrial construction.
We provide our clients a wide range of cable trays which are available in a wide variety of quality
metals and finishes. These cable trays are made of galvanized steel, stainless steel, aluminum, or
glass-fiber reinforced plastic. These trays can be used in stores and dwellings.
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Perforated Cable Tray
requirements, we can also manufacture flanges of the tray. Moreover, we also develop various
accessories for our range which are used for support & installation of cables over the cable trays.
The accessories are mentioned below:
Clamps
Connecting Pieces
Slotted Angles
Features:
Corrosion Resistance
Simple Usage
Durability
Ladder Cable Tray
Cable trays provide a support system for managing cables in a Building or other places. Cable tray
installation provide instant approach to maintain and replacement of cables without any
difficulty. They give excellent ventilation and enhance life of cables.
We offer a wide range of perforated cable trays which are fabricated using quality raw material
such as GI aluminum. These Perforated cable trays are offered in different types, generally fabricated in mild steel. As per the client requirements, we can customize our perforated cable tray range in following modes:
Grey color enamel paint or powder coat
Fabrication in pre - galvanized steel or hot dip galvanized
Every piece of our perforated cable tray has an average length of 2500 mm. As per the client
Our range of cable trays includes perforated cable trays, steel ladder cable trays,
flooring raceway, trucking and cable tray accessories. This range is renowned for varied features
such as resistance to corrosion, strength and durability. We also offer customization options as
per the client requirement.
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Our company offers a precision engineered range of steel ladder cable trays which
are renowned for their attributes such as strength and high capacity. Our range of steel ladder
cable trays are manufactured using mild steel, stainless steel and aluminum which are in
compliance to various international standards and specifications. Ladder type cable trays are ideal
for heavy duty power distribution in industrial facilities.
Features:
Corrosion Resistance
Simple Usage
Durability
Flooring Raceway / Trucking
We provide our clients a wide range of flooring raceways/trucking & duct that are fabricated using
premium quality raw material. Flooring Raceway include diverse dividers to separate the cables.
Its covers are either screw type or welded type. These flooring raceways and trucking are primarily
used to carry networking cables in IT and allied industries. Our range is highly acknowledged for
its quality features such as resistance to corrosion, strength and durability. Owing to our expertise,
we are capable to provide these in customized specifications to the clients.
Cable Tray Accessories and Support
We fabricate a wide range of cable tray accessories using quality raw material and advanced
technology ensuring complete satisfaction at clients end. Our range of cable tray accessories are
used along with a ladder- type cable tray that has a pair of parallel spaced apart rails that are
interconnected by a plurality of rungs. Every plurality of hangers has a partly enclosed area which
is configured & dimensioned to receive minimum 1 cable. Each plurality of hangers includes a
support bracket which is integrally formed as an addition which ensures proper removable by
attaching hanger to minimum 1 of the pairs of the spaced apart rails of ladder- type cable tray.
Our cable tray accessories includes
An elongate flexible spine member selectively bendable into a number of different
configurations
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A plurality of spaced apart hangers attached to the elongate spine member
along the length
Horizontal Bend
We offer Horizontal Bend Cable Tray that are made using premium quality of raw materials. The
entire range is manufactured as per the national and international standards of quality measures.
These are precision engineered to provide easy access for handling trays assembled using metal
longitudinal side rails. All these Horizontal cable tray bends are not only durable and precise but
also as per the technical details furnished by the client. These tray bends are used for the bending
of cable trays. All these tray bends are not only easy to use but also cost effective.
Features:
Durability
Reliability
High Quality
Cost effectiveness
Vertical Inner Bend
We offer our clients a wide variety of high quality Vertical Inner Bend Cable Tray that is
manufactured from the premium raw materials as per the strict quality norms. Our range of tray
is available in various dimensions to suit the requisites of the clients.
Vertical Inner Bend Tray provided by us is in huge demands in the national and international
markets for high durability, performance and low maintenance cost.
Features:
Durability
Reliability
High Quality
Cost effectiveness
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Vertical Outer Bend
We offer high quality Vertical Outer Bend Cable Tray, which is manufactured from the premium
quality raw .material as per the strict quality norms. Our Vertical Outer Bend cable tray is available
in various dimensions to suit the requisites of the clients. Vertical Outer Bend Cable Tray provided
by us is in huge demands in the national and international markets for high durability,
performance and low maintenance cost.
Features:
Durability
Reliability
High Quality
Cost effectiveness
Support 'C' Channel
We are involved in offering our clients a comprehensive range of Support 'C' Channel. It is used
to give apath and to support the cable and is highly appreciated for its durability and long service
life. They are manufactured by our team of experts using premium grade raw material that is
sourced from known and verified vendors. These channels are available in different specifications
to the clients.
Features:
Durability
Reliability
High Quality
Cost effectiveness
Corrosion resistant
Affordable
Abrasion resistant
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Tee
We offer a comprehensive range of high quality Tee Cable tray. It is simply a bridge-like
structure thatcarries electrical and data cable throughout a project. Tee Cable Tray is available in
a wide variety of materials and finishes designed to match location, and load requirements. By
using this all types of wiring can be installed in an efficient, manageable, cost-effective, and
attractive manner.
Cable Tray Products provide continuous rigid support systems for electrical cables. Cable tray
supports high voltage lines, power distribution cables, control wiring and varied
telecommunication cables. It is a safe, versatile and cost effective way to carry large numbers of
wires over considerable distances between their points of origin and termination.
Reducer
We offer a comprehensive range of Cable Tray Reduce that is best known for its performance. Our
Cable Tray Reducer (Concentric) is renowned in the industry for its quality and durability. They are
used for connecting bigger cable trays with the smaller ones in an effortless and suitable manner.
These Reducer (Concentric) Cable Tray are available in perforations of different sizes to suit the
client’s requirements.
Our quality inspectors test the products on different parameters to make them unmatched in
terms of quality. Moreover, our ability to ensure timely completion of the orders provides us an
edge over our competitors
12 - Environment
In planning any cable ladder or cable tray installation the choice of an appropriate corrosion
resistant material and finish is always a key issue at the specification stage. The correct choice
has long term implications and is crucial for ensuring the longevity and the aesthetics of the
complete installation. Maintenance against corrosion of cable ladder and cable tray installations
is generally impractical. It is vital at the specification stage that the selected finish for the
equipment is capable of providing lifetime protection from corrosion within the intended
environment, ideally with some margin of safety. Therefore it is important to establish the
corrosive properties of an environment to ensure the right material and finish is chosen.
Supporting technical data on the standard construction materials and surface finishes available.
Few metals will suffer corrosion damage in a dry, unpolluted atmosphere at a normal ambient
temperature. Unfortunately such environments are exceptional and atmospheric pollutants as
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well as moisture is likely to be present to some degree in most situations, thus some
chemical corrosion may be expected in almost all situations. Any support installation situated in
an area where higher concentrations of chemicals exist must be subject to more detailed
consideration in order to select an appropriate When two dissimilar metals are in contact and
become damp it is possible for corrosion to be induced in one of the metals. Such corrosion may
progress rapidly and cause considerable damage so it is important to consider and, if necessary,
take steps to eliminate this process. Electrochemical (alternatively referred to as electrolytic or
bimetallic) corrosion takes place because the two different metals each behave as electrodes and
the moisture acts as the electrolyte as in a simple battery; as with any battery the resulting flow
of current will cause corrosion of the anode.
Where this is not possible then components with a low potential difference, as shown in
Table 3, should be used. When the potential difference is less than the values given in Table
3, corrosion is unlikely to occur.
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13 - Installation of the system
The following recommendations are intended to be a practical guide to ensure the safe and
proper installation of cable ladder and cable tray systems and channel support and other support
systems. These guidelines are not intended to cover all details or variations in cable ladder and
cable tray installation and do not provide for every installation contingency. It is recommended
that the work described in the following section is carried out by competent persons who are
familiar with the products being installed and the safety standards associated with them.
Common tools for Installation
The following tools are commonly used for installation of cable management systems:
Structural characteristics
When considering the installation of the cable supports system it is imperative to avoid the cutting
or drilling of structural building members without the approval of the project leader on site.
Cable ladders, cable trays and their supports should be strong enough to meet the
loadrequirements of the cable management system including cables and any future cable
additions and any other additional loads applied to the system.
Support systems can be broken down into a number of elements or components. To design a safe
system it is necessary to check each element in turn to ensure:
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That it can safely support the loads being imposed upon it, and that the proposed
fixings to adjacent components are also sufficient for the intended load and that any declared
deflection limits are not exceeded.
Consult the manufacturer for any further assistance on system design.
On many occasions cable ladder or cable tray is installed in circumstances where it will only ever
carry a light cable load, possibly just one or two cables, and its main role is to physically secure
and protect its contents. In these situations it is often the inherent ruggedness or the aesthetics of
the cable ladder or cable tray design which bear most heavily on the specification decision.
However, when a support system is required to be more heavily loaded it is useful to have
knowledge of the theoretical aspects of rudimentary structural design in order to ensure that the
completed system does fulfil its purpose with the greatest safety and economy.
Beams
Any installed cable ladder, cable tray or channel support system can be considered structurally
as a loaded beam four basic beam configurations may be found in a typical installation:
Simply supported beam
Fixed beam
Continuous beam
Cantilever
Simply supported beam
A single length of cable ladder, cable tray or channel mounted on, but not restrained by two
supports, represents a simply supported beam (Figure 2a), which will bend as any load is applied
to it with the supports offering no restraint to this bending.
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This simple beam arrangement is fairly onerous and does not realistically model many real life
installations; thus the load/deflection information given in this guide is based upon more typical
multi-span configurations, which also incorporate joints. However, if an un-jointed single span
does actually occur the Safe Working Load can, as a practical guide, be taken as 0.5 of that
indicated by the manufacturer’s multi- span loading details.
The introduction of a mid-span joint (Figure 2b) into a simple beam arrangement makes analysis
far more complex. This arrangement represents the most testing situation for a cable ladder, cable
tray or channel support joint. For this configuration the manufacturer should be consulted for the
safe working load.
Fixed beam
A fixed beam arrangement (Figure 2c) is a single structural member with both ends fastened
rigidly to supports. Compared with a simple beam this degree of restraint does significantly
increase the ability of the beam to carry loads but it is unlikely that cable ladder or cable tray can,
in practice, be secured sufficiently rigidly to be considered as a fixed beam
However, in the context of a complete cable ladder or cable tray system the main importance of
the fixed beam configuration is that some appreciation of its properties, along with those
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of a simple beam arrangement, will assist the designer to understand the more
complex behavior of a continuous, multiplane cable tray installation.
Continuous beam
A typical multi-span cable ladder or cable tray installation behaves largely as a continuous beam
and the greater the number of spans the closer the similarity. However in practice a run must
contain joints and it can also never be considered of infinite length so it is important to appreciate
how its characteristics do vary from span to span and how these variations should be taken into
account when designing the installation
When a run of cable tray is loaded uniformly (Figure 2d) from end to end the load on each span is
effectively in balance with the loads on the adjacent spans.
This causes the inner spans to behave substantially as fixed beams imparting to them a
considerable load carrying ability. However the end spans (Figure 2e) of the installation are not so
counterbalanced, thus they perform more akin to simple beams, with consequently lower load
carrying capabilities.
Because of this it may be necessary to reduce the end span to less than the intermediate span
length.
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The need for this depends on the ladder/tray manufacturer’s recommendations,
which should be based on load tests carried out to
BS EN 61537. See section 2.4 Installation of straight cable ladder and cable tray lengths for further
details.
Cantilever beam
This type of arrangement most commonly occurs with the brackets which are used to support
cable ladder or cable tray, these being fixed to the structure at one end only. For cable ladder or
cable tray installations it is usual to consider the cable load to be uniformly distributed along the
length of the cantilever arm (i.e. across the width of the ladder or tray); however, if cables will be
bunched then their combined weight effectively acts as a point load on the arm so the bunch
should be laid nearest the supported inner end (Figure 2f) .
Consult manufacturers for safe working loads on cantilever arms. Manufacturers may supply safe
working loads for both uniformly distributed loads and point loads at the ends of the cantilever
arms.
Columns
Any vertically orientated component, whether cable ladder, cable tray or support, acts structurally
as a column; it is not usual to consider cable ladder or cable tray in this way because they are not
designed for this purpose.
Supports are however, frequently used as vertical columns.
The downward load which can be applied to the end of a column is proportional to the column
length and the compressive strength of the material from which it is made. However there are
few real applications where no loads are applied from other directions and since the effects of such
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loads are very significant it is important to consider the totality of the intended
structure rather than focus simply only on the loads applied down the column.
Proper structural analysis must take detailed account of any side forces or eccentric loads caused
by Cantilever arms or other brackets fixed to the vertical channel. Such calculations must be
carried out by a competent person such as a structural engineer. Consult the manufacturer for safe
loading data for supports used as columns
Deflection
All beams will deflect (Figure 2g) when a load is imposed. The magnitude of the deflection depends
upon the following factors:
• The load on the beam,
• The load type – UDL (uniformly distributed load) or point load,
• The distance between the beams supports (span),
• How the beam is fixed and supported,
• The size of the beam,
• The material of the beam.
A beam’s stiffness is derived from its cross sectional shape (defined by its ‘Moment of Inertia or
‘I’ Value’), and the stiffness of the material from which it is made (defined by its” Modulus of
elasticity or ‘E’ value’). The greater the ‘I’ value of beam and the greater the ‘E’ value of its
material, the greater the beam stiffness and the smaller the deflection when a load is imposed.
The deflection of a beam is proportional to the applied load. For example by doubling the applied
load, the deflection will also be doubled (Figure 2g).
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The position and type of load will also affect the amount of deflection on the beam. A
Point Load will increase the deflection on a beam compared to a UDL of the same value. If
designing a system with a point load at mid span, assume that the deflection will be doubled
compared to the same load applied as a UDL.
If Deflection is an important factor, the easiest way to reduce it is to either; reduce the distance
between the supports (the span), use a bigger section beam, or reduce the imposed loading.
Consult the manufacturer for details of deflections at their published safe working loads.
14 - Technical information
Deflection of the cable tray affects the appearance of an installation, but it is not a structural issue. In the case of non-metallic cable tray, deflection may be affected by elevated temperatures.
The general features of Cable Tray and Accessories as per attached technical specification sheet.
Cable Tray and Accessories in material and finish constructed as per following standards:
- Material: Mild steel to BS 1449, PART 1, 1972
- Finish: Hot Dip Galvanized to BS 729.
The slot holes of perforated items not be less than 7 × 15 mm for heavy duty cabling.
Cable Tray and Accessories made smoothly and equipped with end plate.
Thickness of cable tray and accessories shall be 2mm or 1.5mm, heavy duty type as specified in
the attached technical specification sheets.
Cable trays and covers packed and delivered in 3000mm length.
Fixing bolts for connection of cable trays to tray supports. Fixing bolts of round head type
suitable for tray support with 5mm thickness.
Fixing bolts for jointing trays offered and of round head, galvanized steel type.
All cable tray and accessories shall have 1.5mm thickness covers and cover fixing accessory. The
NEMA/CSA load test is a simple beam, uniformly distributed load test. (See Figure1.2) This type
of test was initially selected because:
• It was easiest to test.
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• It represents the worst case beam condition compared to continuous or fixed
configurations. When consulting the manufacturer’s catalog for deflection information, the
designer must verify whether the data shown represents simple or continuous beam
deflection. If continuous beam Deflection is shown, the calculation factor should be given.
NEMA/CSA has one criterion for acceptance under their load test: the ability to support 150%
of the rated load.
*Theoretical maximum deflection for a simple beam, uniformly distributed load may be calculated
as:
*The maximum deflection calculation for a continuous beam of two spans with a uniformly
distributed load is:
A continuous beam of two spans therefore has a theoretical maximum deflection of only 42% of
its simple beam deflection. As the number of spans increases, the beam behaves increasingly like
a fixed beam, and the maximum deflection continues to decrease. As this occurs, the system’s
load carrying capability increases.
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Since different bending moments are created in each span, there is no simple factor to approximate
deflection as the number of spans increases. It is possible to calculate these deflections at any
given point by using second integration of the basic differential equation for beams. Testing
shows that the center span of a three-tray continuous beam can deflect less than 10 % of its
simple beam deflection
The support span should not be greater than the straight section length, to ensure no more than
one splice is located between supports. Location of Couplers. (See Figure 1.4) The location of the
coupler dramatically affects the deflection of a cable tray system under equal loading conditions.
Testing indicates that the maximum deflection of the center span of a three-span tray run can
decrease four times if the couplers are moved to the one-quarter point from the above supports.
This can be a major concern for designers considering modular systems for tray and pipe racks.
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15 - Packaging and transportation
Straight lengths of trays, ladders, covers and channel
These shall be packed in bundles using adequate banding* and balanced at the center * It is
recommended that where possible non-metallic banding is used in order to avoid rust stains
forming on galvanized products and contamination of stainless steel products.
Where products of five meter lengths or above are packed in bundles, they shall be supported with
a minimum of three timber bearers which provide sufficient clearance to accommodate the forks
of a forklift truck. Bearers shall be spaced evenly along the length of the bundle.
Where shorter length products are packed in bundles, they shall be supported with a minimum of
two timber bearers which provide sufficient clearance to accommodate the forks of a forklift
truck. Bearers shall be spaced evenly along the length of the bundle. Bundles should be placed on
a flat level surface with timber bearers. If bundles are stacked on top of one another they should
be aligned vertically. The handler is responsible for ensuring that the stack is stable. The working
height and load capacity of the storage facility and/or transport vehicle should not be exceeded.
Boxed and bagged parts
Boxes and bags should be stacked onto suitably sized pallets for handling by a fork lift truck. Pallets
of parts must be kept dry and stacking should be avoided.
Tray and Ladder Fittings
Small parts should be stacked onto suitably sized pallets for handling by a forklift truck. Each pallet
should be suitably wrapped in order to secure the parts. Pallets of parts must be kept dry and
stacking should be avoided. Large parts should be packed and transported in the same way as
straight lengths detailed above.
Specialized Packaging
Where delivery involves transshipment or rough handling end route it is recommended that
products are packed in wooden crates or wooden cases. Packing Handling and Storage
Loading and offloading recommendations
Site deliveries should preferably only be made where suitable mechanical handling equipment is
available on site.
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The delivered material must be treated with care. Lifting must only be carried out
from the sides and the forklift truck tines must pass below a complete bundle, see Figure 1a.
Tines must never* be inserted into the end of the bundle, see Figure 1b unless provision is made
such as special packaging and/or extended tines, otherwise the safety limits of the lifting vehicle
may be exceeded and damage may be caused to the equipment being lifted.
For offloading by crane suitable lifting beams should be inserted from side to side beneath a
bundle and these must be sufficiently long to avoid undue pressure on the edges of the bottom
components.
The tensioned banding used for securing bundles of equipment during transport is not suitable
for lifting purposes. When cutting this banding appropriate eye protection must be worn to avoid
injury.
Sheared steel (particularly pre-galvanized or stainless steel) does have relatively sharp edges and
protective gloves must be worn during handling.
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Storage
In order to store Cable Tray Systems, Cable Ladder Systems, Channel Support Systems and other
supports safely and maintaining them in their delivered condition, the following guidelines
should be considered:-Products which are either Hot Dip Galvanized (HDG) after manufacture,
stainless steel or non-metallic can be stored outside without cover (excluding boxed items).
When stored outside products should be stacked in a method that ensures adequate drainage.
However outside storage is not recommended for galvanized products due to wet storage stain
(See below). Ideally, all metallic products should be stored undercover in a dry, unheated
environment and be loosely stacked off the ground to ensure adequate ventilation. It is
important that products that have different finishes are kept apart.
Products Pre Galvanized (PG) before manufacture should always be protected and stored in a
well ventilated and dry location, and stacked as above.
Any components packaged in degradable bags, boxes, cartons etc. should always be stored in a
well ventilated and dry location.
All products should be stored away from areas where processes or activities could cause
damage and/or contamination. Due consideration should be given to ensure products are
stacked together by type and width and in such a way as to prevent toppling.
16 - Frequently Asked Questions
1 - What is a Cable Tray System?
2 - What standards / guidelines are available for cable tray systems?
3 - What types of Cable Tray are available?
4 - How do I know what type of cable tray is right for my application?
5 - What materials / finishes are available for the various cable tray systems?
6 - Now that I know what types of cable trays are available, what configurations are available?
7 - After selecting the type of cable tray and configuration required, what support methods are available?
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8 - Before selecting the type of cable tray, cable tray configuration(s), and support
method desired, what additional information do I need to supply to the cable tray manufacturer
for them to best Understand and satisfy my needs?
What is a Cable Tray System?
Per the National Electrical Code, a cable tray system is "a unit or assembly of units or sections and associated fittings forming rigid structural system used to securely fasten or support cables and raceways."
What does this mean?
* Cable trays support cable the way that roadway bridges support traffic.
* A bridge is a structure that provides safe passage for traffic across open spans.
* Cable tray is the bridge that allows for safe transport of wires across open spans.
* Therefore, think of cable tray as the structural component of a building's electrical system.
What standards / guidelines are available for cable tray systems?
1. The *National Electrical Code* publishes the standards for all types of electrical applications.
Articles 318, 250, and 80 cover various aspects of cable tray systems.
2.*NEMA*, (National Electrical Manufacturers Association), is association comprised of the major
Cable tray manufacturers in the industry. This committee has published three documents to date: NEMA VE1, FG1 and VE2.
*NEMA VE1* covers general cable tray definitions, manufacturing standards, performance standards, test standards, application information.
*NEMA FG1* addresses the standards for fiberglass cable tray systems.
*NEMA VE2* is a cable tray installation guideline which covers receiving and unloading material, storage of material, and general installation practices.
3. *CTI*, (Cable Tray Institute), is a trade association comprised of the major cable tray manufacturers in the industry and was formed to provide specifiers, designers, and installers information on the advantages of using cable tray systems over other types of products. (I.e. conduit, ladder rack, etc.)
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What types of Cable Tray are available?
1. Ladder
2. Solid Bottom
3. Trough
4. Channel
5. Wire Mesh
6. Single Rail
How do I know what type of cable tray is right for my application?*
1. Ladder Cable Tray provides:
1. Solid side rail protection and system strength with smooth radius fittings and a wide selection of materials and finishes.
2. Maximum strength for long span applications standard widths of 6, 12, 18, 24, 30, and 36 inches
3. Standard depths of 3, 4, 5, and 6 inches
4. Standard lengths of 10, 12, 20 and 24 feet
5. Rung spacing of 6, 9, 12, and 18 inches
Ladder cable tray is generally used in applications with intermediate to long support spans, 12 feet to 30 feet.
2. Solid Bottom Cable Tray provides:
1. No ventilated continuous support for delicate cables with added cable protection available in metallic and fiberglass.
2. Solid bottom metallic with solid metal covers for no plenum rated cable in environmental air areas
3. Standard widths of 6, 12, 18, 24, 30, and 36 inches
4. Standard depths of 3, 4, 5, and 6 inches
5. standard lengths of 10, 12, 20 and 24 feet Solid Bottom cable tray is generally used for minimal Heat generating electrical or telecommunication applications with short to intermediate support spans of 5 feet to 12 feet
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3. Through Cable Tray provides:
1. Moderate ventilation with added cable support frequency and with the bottom configuration providing cable support every 4 inches. Available in metal and nonmetallic materials.
2. Standard widths of 6, 12, 18, 24, 30, 36 inches
3. Standard depths of 3, 4, 5, and 6 inches
4. Standard lengths of 10, 12, 20 and 24 feet
5. Fixed rung spacing of 4 inch on center trough cable tray is generally used for moderate heat generating applications with short to intermediate support spans of 5 feet to 12 feet.
4. Channel Cable Tray provides:
1. An economical support for cable drops and branch cable runs from the backbone cable tray system.
2. Standard widths of 3, 4, and 6 inches in metal systems an up to 8 inches in nonmetallic systems.
3. Standard depths of 1¼-1¾ inches in metal systems and 1, 1 1/8, 1 5/" and 2 3/16 inches in nonmetallic systems
4. Standard length of 10, 12, 20 and 24 feet Channel cable tray is used for installations with limited
Numbers of tray cable when conduit is undesirable. Support frequency with short to medium support spans of 5 to 10 feet.
5. Wire Mesh Cable Tray provides:
1. A job site, field adaptable support system primarily for low voltage, telecommunication and fiber optic cables. These systems are typically steel wire mesh, zinc plated.
2. Standard widths of 2, 4, 6, 8, 12, 16, 18, 20, and 24 inches
3. Standard depths of 1, 2, and 4 inches
4. standard-length of about 10 feet (118") Wire Mesh tray is generally used for telecommunication and fiber optic applications and are installed on short support spans, 4 to 8 feet.
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6. Single Rail Cable Tray provides:
1. These aluminum systems are the fastest systems to install and provide the maximum freedom Fort cable to enter and exit the system.
2. Single hung or wall mounted systems in single or multiple tiers.
3. Standard widths are 6, 9, 12, 18, and 24 inches.
4. Standard depths are 3, 4, and 6 inches.
5. Standard lengths are 10 and 12 feet Single Rail Cable Tray is generally used for low voltage and power cables installations where maximum cable freedom, side fill, and speed to install are factors.
What materials / finishes are available for the various cable tray systems?*
1. *Steel* (Min. Yield = 33KSI) (35 KSI for Stainless)
1. *Plain:* hot rolled pickled and oiled steel per ASTM A569 (Commercial Quality) or A570
2. *Pre-Galvanized:* mill galvanized steel per ASTM A653 CS (Commercial) or SS (Structural) G90
3. *Hot Dip Galvanized after Fabrication:* plain steel which is hot dipped after fabrication per ASTM A123
4. *Stainless Steel:* type 304 or 316L fully annealed stainless steel
2.*Aluminum* (Min. Yield = 23 KSI)
1. 6063-T6 or 5052-H32 alloy per ASTM B209
3. *Fiber Reinforced Plastic* (FRP)
1. Polyester and Vinyl Ester resin systems available
2. Meet ASTM E-84 smoke density rating; Polyester 680, Vinyl Ester 1025
3. Class 1 Flame Rating and self-extinguishing requirements of ASTM D-635.
Now that I know what types of cable trays are available, what configurations are available?*
1. Straight sections are available to route cables in a horizontal or vertical plane.
2. Fittings are available to route cables in various directions in either the horizontal or vertical planes.
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Typical examples of fittings include elbows, tees, crosses, and risers. Each of these fittings are available in various radii and bend angles.
3. Covers are accessories and shouldn't be in here unless splice etc. are included.
After selecting the type of cable tray and configuration required, what support methods are available?*
1. Trapeze Support (Single or Multi-tier)
2. Hanger rod clamps, "J" hangers
3. Center Hung Support
4. Wall Support
5. Underfloor Support
6. Pipe stanchions or other structures each of these support methods are preferable in different applications. For instance, trapeze supports may be desired in an application where cables will be pulled through the cable tray.
Center hung supports, on the other hand, are generally used when cables will be installed from the side of the cable tray. Center hung supports are especially useful when future cable additions are desired. Wall supports and underfloor supports are useful when ceiling structure is not available or undesired. Outdoor installations are controlled by the structures available to support the cable tray.
Before selecting the type of cable tray, cable tray configuration(s), and support method desired, what additional information do I need to supply to the cable tray manufacturer for them to best understand and satisfy my needs?*
1. *Where Job site and installation considerations
1. Outdoor
1. Supports available affect the length and strength requirements
2. Environmental loads, ice, wind, snow, and possibly seismic
3. Corrosion requirements affect the materials and finishes
4. Classified hazardous locations affect the cable types acceptable
2. Indoor
1. Support locations available affect the length and strength of the system
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2. Industrial installation may require a 200 lb. Concentrated Load
3. Commercial or institutional installation may make system appearance, system weight, and space available important factors
4. Environmental air handling area may affect cable types, cable tray material, or cable tray type and need for covers
5. Classified hazardous locations affect the cable types acceptable
2. *What?*
1. Type and number of cables to support
1. NEC cable fill requirements dictate size, width and depth, of system
2. Cable support requirement may control bottom type
3. Largest bending radius of cable controls fitting radius
4. Total of cable weight determines load to support
2. Future requirements
1. Cable entry / exit freedom
2. Design partially full or an expandable system
3. Support type to allow for needs
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17 - About us
General Policy
Each company, according to its sources, opportunities, objectives and its position in the industry
should adopt a policy to presence and compete in the market.
A competitive data collection system should be able to gather the necessary information from
sources such as raw material suppliers, distribution channels, consumer channels and customers,
research institutions and trade associations to enjoy a particular advantage in the market,
compared to the other systems, by means of adopting proper competitive strategies and also be
able to not only create the proper competitive atmosphere for managers' decision making, but also
contribute the significant growth and survival of the system.
Alvand has defined its long-term goals based on the following outlines:
Production Strategies
It has been assumed that there is a great demand for the products and therefore we should only
focus on production. In addition, we must be able to improve customer satisfaction through
increasing productivity and enhancing interaction with other industries.
Product Strategies
There is always a demand for high-quality and reasonable-priced products.
Marketing Strategies
The client's need must be understood first, and then based on that we produce high quality
products with high performance which can best satisfy his need and consequently, its value will
be higher than competitors'.
Social Marketing Strategies
In addition to the current need of the customer, the long-term results of supplying the product
should be considered and convenience of our respected customers should be also thought about.
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Guarantee and Warranty
All products of this company have 12 months warranty from delivery. Obviously, the employer
must observe all the rules regarding the maintenance of the items before installation. If, within
12 months from the date of the provisional acceptance, any problems have arisen due to design
and / or defective manufacturing, repair or replacement should be made by the seller at his own
expense and expense, including The installation work on the temporary admission site means that
the owner of the whole plant is absorbed.
Delivery place:
Contractor's warehouse or at the place of galvanized unit.
Delivery schedule
- Expected schedule:
- Accept seller suggestion:
- Award:
- Final comments and drawings:
- Delivery:
Various Projects Such as:
Power, supply and disposal industries:
Solutions for the oil and gas industry
Solutions for wind power systems
Solutions for photovoltaic systems
Solutions for power stations
Solutions for biogas plants
Solutions for the food industry
Solutions for production and industry
Solutions for switching cabinet construction
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Solutions for shipbuilding and offshore Solutions for tunnels
Solutions for airports and railway stations
Solutions for office and administration buildings
Solutions for the health care sector
Solutions for residential buildings
Solutions for event and sports venues.
CONFIDENTIALITY
18.1 No party shall disclose any information to any third party concerning the matters under this
contract generally. In particular, any information identified as proprietary in nature by the
disclosing party shall be kept strictly confidential by the receiving party and shall not be disclosed
to any third party without the proper written consent of the original disclosing party.
18.2 Any contravention of the above mentioned provisions by any BIDDER, sub- BIDDER,
consultant, and advisor of the employees of the BIDDER will invite penal consequences under the
aforesaid legislation.
18.3 The BIDDER or sub-BIDDER, consultant, advisor or the employees engaged by the
BIDDER shall not use BARC’s name for any publicity purpose through any public media like
press, Radio, T.V. or Internet without the prior written approval of BARC.
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18 - Contact us
Unit 1 - No 1 - Khayyam Alley – Motalebi Nejat St - Akhlaghi St - Dolat St - Tehran - Iran
Tel/Fax: (0098) 21-22646197-8
Email: [email protected]
Technical Office: [email protected]
Sales Management: [email protected]
Commercial: [email protected]