system - truss beams catalogo 2015 … · 04 05 2013 the high council for public works (consiglio...

MTR

® S

YS

TE

M - T

RU

SS

BE

AM

S

Since 1995, we have designed and produced composite steel and concrete structures sup-ported by our engineers. Our experience allows us to be a point of reference for engineers and companies working in this sector.

We focus our attention and competence con-stantly on the quality of the product and on the

customer satisfaction by improving our quality and productivity standards.

Experience and competence allowed us to design innovative and target oriented products aiming to enhance the building sector. For this reason, we developed and patented the building system called Sistema MTR®.

Com

pany

pro

file FROM SMALL

METALWORKING FACTORY TO THE BIG STEEL CONSTRUCTION SECTOR

WE WANT TO BE A STRONG POINT OF REFERENCE FOR ENGINEERS AND ADVANCED COMPANIES.

WE ARE CONSTANTLY COMMITTED TO PRODUCT QUALITY AND CUSTOMER SATISFACTION BY IMPROVING

OUR QUALITY AND PRODUCTVITY STANDARDS.

0203

Tim

elin

e MORE THAN 40 YEARS EXPERIENCE IN ADVANCED TECHNOLOGY

1967The first composite truss beam is patented

1967Francesco Rizzi starts working as blacksmith and establishes a small metalworking factory in Bitetto (BA)

1994The company Metal.Ri produces the first composite truss beams

1995The design team is established within the company

1967 19941967 19951988 1998 2009

2009Metal.Ri establishes a collaboration with the Politecnico di Bari and the Università La Sapienza di Roma. They validates the calculation algorithm in order to get the patent for the Sistema MTR®

1998First work abroad

2009Metal.Ri achieves the ISO 9001:2008 certificate (Product quality management system)

1988The brothers Andrea and Vito Rizzi establish the company Metal.Ri

0405

2013The High Council for Public Works (Consiglio Superiore dei Lavori Pubblici) classifies the Beams of the Sistema MTR® as the category A

2013The Sistema MTR® was born. It represents an advanced solution the built horizontal structures made by composite steel and concrete prefabricated beams

2015The software INFO.MTR S.r.l was born. It is the software department that produces the Software MTR®, the application used to design and calculate the elements of the MTR® System

20132012 20142013 20152013

2012Metal.Ri achieves the ISO 3834-2 certificate (Quality requirements for fusion welding of metallic materials) and the international accreditation

2013Metal.Ri achieves the EN 1090-1:2012 for CE Marking, in accordance with execution class EXC 4

2014The company develops and enlarges the business network

2014Metal.Ri gets the patent for its Sistema MTR® by EPO (European Patent Office)

A

Info

gra

phic OUR NUMBERS TELL

OUR STORY

SURVEYORR&D ENGINEER RESEARCHERLOGISTICS EMPLOYEEDRAUGHTSMANADMINISTRATIONSTRUCTURAL ENGINEERSPRODUCTIONCOMMERCIAL AND TECHNICAL EMPLOYEES

200.000 SquARE METRES PER yEAR OF FLOORS MADE BY THE MTR® SYSTEM

4000 buIldINg SITES DESIGNED WITH COMPOSITE STRUCTURES

MAXIMuM bEAMS SPAN

60% RESIDENTIAL15% COMMERCIAL15% INDUSTRIAL10% TERTIARY

SAlES by buSINESS SECTORS

METAl.RI by NuMbERS

OuR STAff

Over the years, we have built millions of square metres of buildings in any building sector, from the residential to the commercial sector, from the industrial to the tertiary sector and to the infrastructure facilities.

We can design beams with longer span.

04071426

60%15%

15%

10%

ITAlIAN buSINESS NETWORK

glObAl buSINESS RElATIONSHIPS

0607

WE ARE CONTINUALLY ENGAGED IN A PROCESS OF BOTH NATIONAL AND INTERNATIONAL DEVELOPMENT.OUR BUSINESS NETWORK INVOLVES BOTH THE ITALIAN AND THE FOREIGN MARKET

WHERE WE ARE ABLE TO SELL CUSTOM PRODUCTS. AS FOR THE FOREIGN MARKETS, WE ESTABLISHED OUR PRESENCE IN ALBANIA, MOLDAVIA, ISRAEL, UKRAINE, MALAYSIA, TUNISIA AND POLAND

MTR® T BEAM

MTR® SySTEM: THREE TYPES OF TRUSSES

MTR

® S

yste

m MTR® SYSTEM THE BEST CHOICE FOR AN ADVANCED BUILDING SITE

New, advanced designing process, better performances. The MTR® System represents the most reliable system belonging to the composite steel-concrete structures.

The system comprises three types of trusses (type A, T and C). It is used to build horizontal structures and it can partially or totally replace the main and the secondary beams.

Thus preserving the setting of a typical building site for concrete structures, we do not use beams made on site, but only prefabricated composite steel beams which are delivered to the construction site ready for being assembled.

MTR® A BEAM

MTR® C BEAM

0809

The MTR® System is composed of three different types of trusses having their pertaining calculation system for the designing process:

The MTR® A beam is self-supporting during the assembly and casting phase of the floor. It has a steel bottom plate.

The MTR® T beam has to be shuttered and propped during the assembly and casting phase of the floor. It does not have the bottom plate and it is completely embedded in the cast-in place-concrete.

The MTR® C beam is self-supporting during the assembly and casting phase of the floor. It has a concrete bottom plate.

SOfTWARE MTR® is the application software for the calculation and designing of the MTR® Beams. It is implemented in the specific production process used by Metal.Ri.

MTR® System: the theories for calculating and verifying the MTR® System have been tested with the Polytechnic University of Bari and the University La Sapienza of Rome.

WHAT IS THE MTR® SYSTEM?

Consulting S

erv

ice THE TECHNICAL

EVALUATION

The engineering design, the strength of Metal.Ri.

We want to offer our customers with the best support during the designing phase of the structure. Our structural engineers offer their consulting service to professionals and companies by suggesting the best solution for their building using the elements of the MTR® System. A long experience gained over the years in designing composite structures.

The MTR® System can be designed to suit any purpose such as residential, commercial, tertiary and industrial buildings.

Ask us for an estimate. One of our structural engineers will support you and will provide the best answer to your needs.

Together with the designer, he will be able to provide a complete calculation of the structure and the best technical and economic offer accompanied by the floor framework plans including the type and section of each MTR® element used.

Particular attention is paid to the performance of the structure and to the architectural and designing requirements.

The designer will carry out the tests of details of the MTR® elements. He will also develop the mathematical model in three dimensions of the entire structure using the calculation software that is able to interact with the application Software MTR®.

The building system of the MTR® beams is equipped with a specific structural design software. It has been designed taking into account the production process and the technical Italian and European law.

The purpose of this software is to integrate the different exiting structural design systems in order to plan works using the MTR® technology.

INfO.MTR Srl (the software department of Metal.Ri) has developed Software MTR® following the uNI EN ISO 9001:2008 quality standard requirements.

1011

WE OFFER OUR CONSULTING SERVICE AND COMPLETE ASSISTANCE TO SATISFY OUR

CUSTOMERS’ NEEDS.

THE CERTIFIED SOFTWARE

Consulting S

erv

ice AFTER-SALE

TECHNICAL CONSULTING SERVICE

The technical personnel will support you during the next steps, from the modeling of the MTR® elements in your structural calculation program to the drawing up of the calculation report accompanied by construction drawings, the measured survey of the construction site, the scheduling of deliveries, the assistance in laying the elements of the MTR® System.

Adva

nta

ges WHY CHOOSE

THE MTR® SYSTEM

REduCTION Of CONCRETEThe section of the MTR® Beams are smaller than the ones in reinforced concrete beams.

SPEEd Of EXECuTIONThe speed and the ease of assembly of the structures allow you to gain time and save money.

IT IS SuITAblE IN WHATEvER SEISMIC AREAIt ensures safety for the client, the structural designer and the works supervisor.

ElIMINATION Of fORMWORKS ANd PROPSWork in site is reduced. Formworks and props can partially or totally be eliminated.

MORE fREEdOM WHEN ARRANgINg THE INTERIOR SPACESThe reduction of the number of columns and their section and the increasing the column spacing, permit to optimize the interior spaces.

fIRE RESISTANCE WITH NO AddITIONAl COSTS ANd WORKSThe technology guarantees the resistance needed.

SElf-SuPPORTINg fEATuREThe advantage of self-supporting beams is to reduce the buckling effect on columns and accelerate the execution of the work.

lIgHTWEIgHT PRE-CAST SySTEMSThe steel frame is easy to handle and strong rebars.

THE MTR® STEEL STRUCTURES ARE MADE IN OUR FACTORY SO WE DELIVER A READY TO CAST PRODUCT.

1213

Certifi

catio

ns LEGISLATION AND

CERTIFICATIONS

Metal.Ri takes part in teamwork and belongs to different professional associations involved in specific research projects (Universities, National and International Research Centres).

The company is making investment in research and development of products and in conforming to the law and to the European legislation in order to put on market new products which are made thanks to the most advanced technology and with controlled and certified quality.This results in more guaranteed products to our clients. By obtaining the certification, all the staff involved in the design and production process will follow specific criteria and methods. The development of this activity aims to improve the performances of the final products even if used for different purposes.

The tests are carried out in collaboration with official and authorized laboratories according to the article 20 of the Law 1086/71, in order to verify the applicability of calculations theories. Tests, controls and structural inspections are also carried out in the case of non-common situations or of structures bearing higher loads.

Construction of a parish centre. Monitoring of the lowering side of the MTR® beams occurs in order to verify whatever their behaviour reflects the theoretical data

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quAlITy MANAgEMENT SySTEM CERTIfICATIONMetal.Ri holds the ISO 9001 Quality Management System Certification.

CE MARKINgThe CE MARKING appears on all the Metal.Ri products according to the EN 1090-1:2012.Metal.Ri controls the production in the factory in conformity to the requirements of the Maximum Execution Class of EXC4.

WEldINg CERTIfICATIONMetal.Ri controls the welding processes following the criteria of the quality management system in accordance with the international EN ISO 3834-2 standard.

CERTIfICATION Of bElONgINg TO THE ClASS-AThe C.S.LL.PP – Servizio Tecnico Centrale (Superior Council of Public Works- Central Technical Service) approved the MTR® System as CLASS A – Composite steel beams – according to the Linee Guida per l’utilizzo di travi tralicciate in acciaio conglobate nel getto di calcestruzzo collaborante e procedure per il rilascio dell’autorizzazione all’impiego (Guidelines for the use of steel trusses embedded in concrete and procedures for authorized use).

PROduCT quAlIfICATION ANd PROduCTION PROCESSThe C.S.LL.PP – Servizio Tecnico Centrale (Superior Council of Public Works- Central Technical Service) accredited the METAL.RI as processing centre no. 2529/13.

EuROPEAN uNION PATENTMetal.Ri holds the EUROPEAN UNION PATENT of the MTR® System issued by EPO (European Patent Office).

CERTIFICATIONS

The p

roductio

n THE PRODUCTION PROCESS, THE HANDLING OF THE BOTTOM PLATE

Strong guarantees.

The production workshop guarantees the perfect creation of each element of the MTR® System. We follow artisanal standards for an industrial product according to the requirements of the EN 1090-1:2012 that regulates the quality management system for the CE Marking.

Each MTR® Beam is subject to strict controls before delivering. The controls involve the dimensioning and the welding, according to the procedures shown in the production handbook of the MTR® System.

dimensioning controlIt verifies the length and the section of the steel profiles composing the MTR® Beam.

Welding controlThe visual control of welding is carried out. Random controls are also carried by liquid penetrant inspection or radiographic examinations.

The Certifications proves that Metal.Ri continually respects the quality management system and all the existing legislations offering guaranteed products to the customers.

THE PROduCTION WORKSHOP THE PROduCTION HANdbOOK Of THE MTR® SySTEM

1617

RUSTPREVENTER Anti-rust primer

PLASTER Anti-rust primer and adhesion primer

COATING Anti-rust primer

ROUGH PLASTERING On demand

PROTECTION AT REI (fire-resistance rating)

We use the MTR® C Beam - MTR® T Beams with appropriate bottom concrete cover. MTR® A Beams with plasterboard fire protection, heat-resistant plaster or intumescent varnish

COR-TEN STEEL On demand, for the bottom plate and the lateral containment sheets of the MTR® A Beams

TREATMENT ANd fINAl COATINg

THE HANdlINg Of THE bOTTOM PlATE

fINAl COATINg

An anti-rust primer is always distributed on both sides of the bottom plate of the MTR® A Beams while the plaster adhesion primer is applied only on the visible surface.

In this way, the protection of steel increases and the surface is ready for plastering.

When the coating is required, as in the case of a predalle slab floor or false ceiling, the plate only receives the anti-rust primer.

The MTR® A Dropped Beam is subject to the same treatment of the MTR® A Flat Beam: beside the plate, also the beam-ends are visible so they need to receive the primer and, eventually, the plaster adhesion primer.

The bottom plate of the MTR® A Spandrel Beam is subject to the same treatment of the MTR® A Flat Beam (only primer or primer + plaster adhesion primer) while the ends of the extrados receive only the primer since, once the work will be finished, they will be protected by an exterior primer.

The MTR® C Beam has not the bottom plate but a finished concrete intrados so it does not need particular treatment.

PLASTER VARNISH ROUGH CORTEN STEEL

MTR

® A

Beam MTR® A BEAM

ARCHITECTURAL AND SRUCTURAL THINNESS

STEEL STRUCTURE It is made of structure steel according to the EN ISO 10025-2 standard

CONCRETE FINISHING Class C25/30, unless otherwise indicated.

SELF-SUPPORTING FEATURE

The beam carries itself and the floor since it has been placed on the columns, before the concrete casting.

WELDINGContinuous wire welding with shielding gas (Process UNI EN ISO 4063-135) according to the NTC of 2008.

NORMATIVE REFERENCES

In the first phase, we refer to the paragraph no. 4.2 of the NTC of 2008 and to the Eurocode 3; in the second phase, we refer to the paragraph no. 4.2 of the NTC of 2008 and to the Eurocodes 2 and 4. For the structures built in seismic zones, we refer to the chapter no. 7 of the NTC 2008 and to the Eurocode 8.

HOW A BEAM IS SUPPORTEDThe MTR® Beams are supported by walls or columns through the specific end-anchored systems.

ENGINEERING DESIGN PROCESSOur engineers follow the calculation procedure of the Software MTR® according to the existing laws.

POST-FIRE MECHANICAL PROPERTIES (R)

We use intumescent varnish, heat-resistant plaster or fire protection plasterboards.

BASEBase plate made of structure steel according to the EN ISO 10025-2 standard. It functions as reinforcement carrying the floor and as formwork for the concrete casting.

The MTR® A Beam, with the steel bottom plate, is self-supporting during the assembly and casting phase of the floor. It allows to meet the architectural requirements so it represents the alternative and ideal solution against the limitations of the traditional systems.This building structure solution makes possible to build structural frames no matter what seismic design category combining different kinds of floors according to the building and its function.The beam is self-supporting during the assembly and casting phase of the floor so its static behaviour depends on the two different building phases of the structure:Phase 1: until the concrete consolidation, the MTR® A is self-supporting and functions as an isostatic lattice metallic structure.Phase 2: after the concrete consolidation, the self-supporting MTR® A beam is tied to adjacent structural support members. It becomes a hyperstatic structure with a resistant composite steel-concrete section.

TECHNICAl SPECIfICATIONS

WHy uSE THE MTR® A bEAMS

n Reduction of floor building times of 70%.

n Reduction of the number of columns and their sections

n Reduction of height and width of the beam sections

n Reduction of column bucklingn Reduction of the concrete used

for beamsn Total elimination of formworks

and props

It is composed of a bottom plate, top chords, webs and optional additional diagonal braces at the end of the beam. It is made of structural steel according to the EN ISO 10025-2 and it is filled with in-situ concrete.

Go to our website Metal.Ri and look the video on how to assemble the MTR® Beam.

The MTR® A Beam is delivered to the site with the continuous reinforcing bars for beam to column connections. It is made of concrete reinforcing steel B450C.

JOINT REINfORCEMENT

qR COdE fOR ASSEMbly INSTRuCTIONS

1819

THE IDEAL SOLUTION FOR ANY BUILDING SECTOR, NEW BUILDINGS OR RENOVATION. A SELF-SUPPORTING REINFORCEMENT AND FORMWORK IN A SINGLE ELEMENT

MTR® A BEAMS WITH CONTINUOUS SIDEBOARDS ON COLUMNS FOR HOLLOW-CORE FLOOR. IT IS AN ALTERNATIVE TO PREFABRICATED STRUCTURES

MTR

® A

Beam MTR® A DROPPED BEAMS

AS COVERAGE FOR ARTISAN WORKSHOP AND FLOOR DECKING FOR OFFICES. WORK COMPLETED.

MTR® A DROPPED BEAMS AS COVERAGE FOR WEDDING HALLS AND DANCE HALL.

01

02

MTR

® A

Beam

The MTR® A Beam follows the rules of NTC 2008 concerning the beam to column aspect ratio. Therefore, it is possible to build columns having reduced sections.Both smaller sections and the self-supporting feature reduce the buckling on the columns, so less reinforced concrete is needed at the joist level and it becomes easier to respect the capacity design procedure based on column – beam joints.

We make different types of MTR® A Beam offering full design freedom

n The MTR® A dropped beam has the metal formworks for the down-stand element. It represents an alternative to both prefabricated and reinforced concrete beams. The dropped beam is useful for long span floors whose upper surface not only functions as a covering floor but it can support offices or flats.

n The MTR® A Spandrel beam has the metal formworks for the up-stand element. . It represents an alternative to the prefabricated beams. The dropped beam is suitable for long span floors and allows the effective depth to be used.

n The MTR® A Slim-floor beam, has the metal formworks only for the edge beams. It is used in different sectors such as residential, industrial, commercial and tertiary.

n The MTR® A Custom beam can be an arched beam, a slope beam, a double-sloped beam. It can be used in many different ways and can meet any structural requirement.

1. PLACEMENT OF THE SELF –SUPPORTING MTR® A BEAM ON THE COLUMNS

2. FLOOR ASSEMBLY

fOR flOORS MAdE Of ClAy bRICKS ANd CONCRETE: • PLACEMENTOFPREFABRICATEDORPRESTRESSEDLATTICEGIRDERS

• PLACEMNTEOFHOLLOWCLAYBRICKS

fOR STEP® flOORS • PLACEMENTOFPREFABRICATEDLATTICEGIRDERS

• PLACEMENTOFEXPANDEDPOLYSTYRENE(EPS)LIGHTWEIGHTBLOCKS

fOR flOORS MAdE Of SlAbS (PREdAllE) • PLACEMENTOFSLABS

fOR HOllOWCORE flOORS • PLACEMENTOFHOLLOWCORESLABS

3. INSTALLATION OF THE TOP AND BOTTOM ADDITIONAL BARS WITHIN THE BEAMS

4. INSTALLATION OF THE REBARS FOR THE FLOOR

5. CONCRETE CASTING

6. WATING TIMES FOR CONCRETE MATURITY

MTR®A bEAM ASSEMbly PROCESS IN SIX STEPS

01

MTR® A BEAMS WITH CONTINUOUS SIDEBOARDS ON COLUMNS FOR HOLLOW-CORE FLOOR. IT IS AN ALTERNATIVE TO PREFABRICATED STRUCTURES

02

2021

0503

02

01

MTR® A SELF-SUPPORTING SPRANDREL BEAMS WITH 19 ML LENGTH FOR COMMERCIAL BUILDINGS.

04

09

08

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INSTALLATION OF HOLLOW CORE FLOOR ON THE MTR® A BEAMSMTR® A BEAMS FOR FLOORS MADE OF CLAY BRICKS AND CONCRETE. MTR® A BEAMS FOR ACCOMMODATIONS WITH DROPPED AND SPANDREL FLOORS AND FAKE COLUMNS.MTR® A BEAMS WITH STEP FLOOR. MTR® A BEAMS IN THE WIDTH OF THE CANTILEVER.

CASTING OF THE PREDALLE FLOOR WITH MTR® A SPRANDREL BEAMSDECK MADE OF MTR® A BEAMS WAITING FOR THE PLACEMENT OF HOLLOW CORE SLABS. MTR® A CURVED BEAMS.MTR® A BEAMS WITH STEP FLOOR DURING THE CONCRETE MATURITY PROCESS. LONG-SPAN MTR® A BEAMS GRID.

MTR

® A

Beam 01

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06 07MTR® A SELF-SUPPORTING SPRANDREL BEAMS WITH 19 ML LENGTH FOR COMMERCIAL BUILDINGS.

MTR

® T

Beam MTR® T BEAMS

LIGHTWEIGHT PREFABRICATED STRUCTURES FOR THE TRADITIONAL BUILDING SYSTEMS

The solution that replaces the traditional reinforcing bars with improved adhesion to assemble on site: a lightweight prefabricated construction system that can be combined with traditional building systems. It is the ideal solution for residential buildings. The MTR® T Beam is not self-supporting and must be placed on a formwork or on the slab of predalle floors. The MTR® T Beam can be used to make slim floor beams where it is not possible for the ordinary reinforced concrete. The sections of the MTR® T beams will help you to respect easily the aspect ratio beam-column imposed by the NTC 2008, without oversizing the pillars to create integrated beams. The MTR® T beams can be combined with any type of floor and vertical structure since standard dimensions do not govern their production. They can be used in the building sectors where the self-supporting feature is not indispensable, both for new constructions and for the recovery of existing buildings.

WHy uSE THE MTR® T bEAMS





for beamsn Fire resistance without extra

costs and additional work

It consists of one or more lattice girders made of metallic steel according to the UNI EN ISO 10025-2 which are assembled together. The distance between axes is from 15 to 25 cm : each girder consists of two top chords and two bottom chords; these are linked by a central web possibly provided with additional lateral braces, to be completed on site by casting it with colla-borating concrete.



SELF-SUPPORTING FEATURE No


NORMATIVE REFERENCESParagraph no. 4.2 of the NTC of 2008 and Eurocodes 2 and 4. For the structures built in seismic zones, we refer to the chapter no. 7 of the NTC 2008 and to the Eurocode 8


ENGINEERING DESIGN PROCESS

Our engineers follow the calculation procedure of the Software MTR® according to the existing law.


It depends on the bottom concrete cover or on the thickness of the predalle slabs where it lays on.

BASE No


2425

THE BEAMS ARE EASY TO ASSEMBLE AND THEY ACHIEVE GOOD PERFORMANCE IN A SINGLE MOVE: FROM THE STORAGE AREA DIRECTLY ON THE WOODEN FORMWORK OR ON THE PREDALLE SLABS

The buildings made of MTR® T Beams have floors with completely flat intrados, thus there are no beams sticking out of frames placed at the central or perimeter frame. This provides maximum design freedom, consequently there are no constraints while designing the interior layout of the rooms which will not have and spandrels beams.

dESIgNINg fREEdOM



The MTR® T Beam is delivered to the site with the continuous reinforcing bars for the beam to column connections. It is made of concrete reinforcing steel B450C.

JOINT REINfORCEMENT

SELECTION PHASE AND RAISING OF THE MTR® T BEAMS.

MTR® T BEAM ON PREDALLE SLABS.

INTRADOS OF THE FLOOR MADE OF MTR® T BEAMS PLACED ON PREDALLE SLABS.

INSTALLATION OF THE MTR® T BEAMS ON THE WOODEN FORMWORK AND STEP FLOOR.

COLUMN jOINT OF MTR® T BEAMS PLACED ON PREDALLE SLABS.

COLUMN jOINT OF MTR® T BEAMS PLACED ON WOODEN FORMWORK.

INTRADOS OF THE FLOOR MADE OF MTR® T BEAMS AND STEP FLOOR.

MTR

® T

Beam

MTR® T bEAMS ON WOODEN FORMWORK WITH FLOORS MADE OF CLAY BRICKS AND CONCRETE. INSTALLATION OF THE FLOOR.

04 05

01

02

03

04

05

06

07

2627

MTR® T bEAMS ON WOODEN FORMWORK WITH FLOORS MADE OF CLAY BRICKS AND CONCRETE. INSTALLATION OF THE FLOOR.

01 0302

06 07

MTR

® C

Beam MTR® C BEAMS

FIRE-RESISTANCE



SELF-SUPPORTING FEATUREThe beam carries itself and the floor since it has been placed on the columns, before the concrete casting.


NORMATIVE REFERENCES

In the first phase, we refer to the paragraph no. 4.2 of the NTC of 2008 and to the Eurocode 3; in the second phase, we refer to the paragraph no. 4.2 of the NTC of 2008 and to the Eurocodes 2 and 4. For the structures built in seismic zones, we refer to the chapter no. 7 of the NTC 2008 and to the Eurocode 8.


ENGINEERING DESIGN PROCESS

Our engineers follow the calculation procedure of the Software MTR® according to the existing law.


It depends on the bottom concrete cover.

BASEConcrete bottom base finished which functions as formwork and support of the floor.

These beams are the best solution where buildings require fire-resistance. The concrete bottom plate, whose dimensions are conveniently realized, functions as formwork and support for the floor.

The MTR® C Beam is suitable for any kind of floor or vertical structure, both self-supporting and non self-supporting structures, to build shopping centres, multi-storey parking, hotels, convention centres, schools, bridges and industrial buildings.The beam is designed in our factory. It is self-supporting during the assembly and casting phase of the floor so it avoids using formworks and props. Its static behaviour depends on the two different building phases of the structure:Phase 1: until the concrete consolidation, the MTR® C is self-supporting and functions as an isostatic lattice metallic structure.Phase 2: after the concrete consolidation, the MTR® C beam is tied to adjacent structural support members. It becomes a hyperstatic structure with a resistant composite steel-concrete section. The bottom-chords are embedded in the concrete plate whose size and concrete quantity are designed accordingly.

It is composed of top and bottom chords, in round steel bars or in square steel bars, which are tied by optional additional diagonal braces at the end of the beam. It is made of structural steel according to the EN ISO 10025-2.


WHy uSE THE MTR® C bEAMS





for beamsn Total elimination of formworks

and propsn Fire resistance without cost and

additional processing

2829

The MTR® T Beam is delivered to the site with the continuous reinforcing bars for the beam to column connections. It is made of concrete reinforcing steel B450C.

JOINT REINfORCEMENT



THE BEAM IS ANCHORED ON THE REINFORCED CONCRETE COLUMNS. IT IS SUITABLE TO ANY KIND OF FLOOR BOTH SELF-SUPPORTIG AND NON-SELF SUPPORTING. IT PROVIDES A VIABLE ALTERNATIVE FOR PRESTRESSED SYSTEM

CONSTRUCTION OF A SHORT SECTION OF THE uNdERgROuNd Of NAPlES

In order to determine the post-fire resistance, a correct calculation of the bottom concrete cover is necessary. This avoids using plasters or intumescent varnish.

POST-fIRE RESISTANCE

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MTR

® C

Beam

06

MTR® C BEAMS FOR FLYOVER: INSTALLATION.

MTR® C BEAMS FOR FLYOVER: ASSEMBLED IN-PLACE.

MTR® C BEAMS FOR FLYOVER: WORK COMPLETED.

MTR® C BEAMS ASSEMBLED ON COLUMNS.

MTR® C BEAMS WITH HOLLOW CORE FLOOR.

MTR® C BEAMS WITH DOUBLE REINFORCING BARS.

MTR® C BEAMS BEING DELIVERED ON SITE WITH PERIMETER SIDEBOARDS.

INSTALLATION OF THE MTR® C BEAMS.

BEAM-COLUMN jOINT OF THE MTR® C BEAMS.

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MTR® C BEAMS WITH PREDALLE SLAB FLOOR

The p

roductio

n SUPPORT SYSTEMS AND STRUCTURAL jOINTS

The B450C steel bars for reinforced concrete allows making structural joints that connect the elements of the MTR® system with the adjoining supporting elements, such as continuous beams, partition walls and columns.

After concrete maturity, the elements of the MTR® system are considered as composite steel and concrete structures, but the section where the beam anchors to the column is a section made of normal concrete, from a bending point of view.

The design of the beam-to-column joints assures the necessary dissipative and ductile behaviour while following the criteria of capacity design. Stirrups providing confinement of the concrete are placed at the level of the connection joints, according to minimum rules (Para. 7.4.3.2.1 of the NTC 2008).

The beams of the MTR® system are provided on site with the reinforcing bars made of steel B450C to make connection joints.

THE BEAMS OF THE MTR® SYSTEM LIE ON VERTICAL SUPPORTING ELEMENTS, COLUMNS AND WALLS TROUGH AN APPROPRIATE SUPPORT SYSTEM WHICH IS WELDED AT THE END OF BEAMS. IT IS CUSTOM-MADE IN ORDER TO AVOID INTERFERENCE WITH THE STARTER REBARS.

3233

LABELSThe MTR® system is simple and quick to assemble. It does not require the use of specialized workers. Assembly diagrams accompany each delivery and each beam arrives on site marked for identification by a label that indicates the beam position.

Even the additional reinforcement bars used for the beam-column connection are wrapped and provided with an identification label that indicates where exactly to place them and they also have to be assembled according to the assembly diagrams.

The p

roductio

n SPECIAL BEAMS AND CUSTOMIZED BEAMS

IN THE CASE OF PARTICULARLY COMPLICATED STRUCTURES, WE HELP OUR CUSTOMERS IDENTIFY, PRODUCE AND GIVE THE BEST BUILDING SOLUTION ACCORDING TO THEIR DEMANDS. [ MTR® A WITH SMAll REINfORCEd ANd fORMEd CANTIlEvEREd ]

MTR® A CuRvEd bEAM

CuRvEd MTR® T bEAM ON THE flOOR RIdgE MTR® A bEAM fOR SlOPEd ROOfSlOPE dIAgONAl MTR® C bEAM fOR SPECIfIC NEEdS

CuRvEd MTR® A bEAM

CuRvEd MTR® A bEAM WITH CANTIlEvER

MTR® A bEAM WITH METAl SHEETS (SIdEbOARdS) uSEd fOR flOORS HAvINg dIffERENT AlTITudE

3435

MTR® A BEAM WITH INTERMEDIATE FLOOR

Our

work

s USES AND COMPLETED BUILDINGS

Over 20 years experience in the field of composite steel – concrete structures. We have built millions of square meters of structures in different fields of construction, from residential to commercial, from industrial to services and infrastructures.

The structural design using the MTR® system adapts to any intended use such as residential, commercial, tertiary and industrial buildings.

Each building can be designed and built according to the technical characteristics of both a single type of the MTR® beam or combining the different beams. A range of options to get the best results and meet any technical and economic need.

RESIDENTIAL BUILDINGS

BUNKERIZATION OF SENSITIVE BUILDINGS (they are made with beam spans of 30 metres and loads of 2900 kilos per square metres)

WEDDING HALLS (we have built 1000 square metres without central columns and total loads of 1200 kilos per square metres)

SCHOOLS

COURTHOUSES

MOTORWAY BRIDGES

INDUSTRIAL BUILDINGS

UNDERGROUND AND MULTISTOREY CAR PARK

CHURCHES

CINEMAS

APPLICATIONS OF THE MTR® BUILDING SYSTEM

01

3637

RESIDENTIAL ESTATES COMPOSED OF 13 FLOORS

02

Our

work

s RESIDENTIAL BUILDING.

COMMERCIAL BUILDING.

TERTIARY BUILDING INCLUDING AN UNDERGROUND PARKING AREA.

RESIDENTIAL BUILDING.

RESIDENTIAL BUILDING HAVING LARGE CANTILEVERS.

MULTIPLEX CINEMA.

AUDITORIUM.


01

03

02

03

05

04

06

05

06

07

08

3839

COMMERCIAL BUILDING MADE OF CURVED MTR® A BEAMS SHOWING THE EXTRADOS

04

07 08

Our

work

s COMMERCIAL BUILDING.

COMMERCIAL AND RESIDENTIAL BUILDING.


WEDDING HALL.


09

10

11

12

13

09

10

11

12

RESIDENTIAL ESTATES COMPOSED OF 11 FLOORS

13

4041

17 18

Our

work

s RESIDENTIAL ESTATE.


CRAFT INDUSTRY WITH OFFICES AND SHOWROOMS.

TOURIST ACCOMMODATION.

RESIDENTIAL ESTATE.

TOURIST ACCOMMODATION.

SERVICE STATION.

14

15

16

17

18

19

20

RESIDENTIAL ESTATE COMPOSED OF 17 FLOORS HAVING LARGE CANTILEVERS

19 4243

15

14

16

20

METAl.RI S.r.l.

70020 Bitetto (Ba) ItalyVia G. Abbruzzese, 42 Tel-Fax +39 080 9921197

[email protected]

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system - truss beams catalogo 2015 … · 04 05 2013 the high council for public works (consiglio...

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