b. scope of work b.1 introduction€¦ · b.2.4 all wood works (doors and wardrobes) refinishing...

Prepared by: Diana M. Babu

US Embassy

Projects Engineer

SENSITIVE BUT UNCLASSIFIED

Embassy of the United States of America

Dar es Salaam, Tanzania

Subject: Scope of Work for Painting and Minor Repair/Replacement Works at

House # 9 Toure Road (CMR).

B. SCOPE OF WORK

B.1 INTRODUCTION

The US Embassy, Dar es Salaam wishes to solicit your technical proposal and pro forma cost

estimate for painting and other minor repair/replacement works at house # 9 Toure Chief of

Mission Residence (CMR) as listed below and as per instructions given in this SOW. The works

shall be done as per scope of work, specifications and general contract conditions. This project

requires an experienced class 6 and above registered contractor in civil and building to design and

execute the job.

The project will involve whole house interior paint, exterior painting, all interior wooden

doors/wardrobes refinishing/vanish, Parquet floor re-stain/vanish, main entrance gates

replacement with new ones as specified hereunder, repainting all metal works, Tanga Stone floor

resealing, raising boundary walls to at least 9Ft high and outdoor toilets restoration as instructed

and specified in this SOW. The Contractor shall provide all labor, materials, tools, equipment,

supervision and other related items and activities required to complete the project.

The Contractor is responsible for the protection of existing structures and utilities. Workers

shall stay within the site area only. Any damage caused by the Contractor shall be repaired at

the Contractor’s expense.

Contractors are advised to visit the site and verify the existing site conditions prior to developing

their proposal.

NOTE: All materials and items to be installed shall be approved by the Contracting Officer

Representative (COR)/Facility Manager before use. Any changes/substitutes on material shall be

approved by COR/Facility Manger before proceeding. Failure to do so will result into rejection of

the work and the contractor will have to redo it at his/her own cost.


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B.2 DESCRIPTION OF WORK

The contractor shall be responsible for the following:

B.2.1 Thoroughly interior painting.

B.2.2 Thoroughly exterior painting.

B.2.3 Re-painting all metal works.

B.2.4 All wood works (doors and wardrobes) refinishing with approved wood sealant/vanish.

B.2.5 Parquet floor staining/vanishing.

B.2.6 Replacement of the main entrance/exit gates with new ones as specified below.

B.2.7 Tanga Stone floor resealing/vanish to natural stone finish.

B.2.8 Boundary walls extension to 9Ft high.

B.2.9 Renovation of the outdoor/guests’ toilets.

B.2.1/2/3/4 RECOMMENDED PAINTING PROCEDURES

I. Preparation

a) All external surfaces to be painted shall be cleaned with a high-pressure spray wash prior

to painting. Any lose or peeling paint shall be scraped and sanded as needed prior to

painting.

b) Wash all surfaces to be painted with an anti-fungal wash applied per manufacturer

instructions.

c) Any cracks and/or holes in plaster or concrete walls shall be cleaned and filled with

appropriate sand - cement mixture prior to painting. Any exposed metal reinforcing bars

shall be cleaned with a wire brush and primed with a zinc-based primer. Area repaired shall

be spot primed.

d) Any metal work shall be sanded/metal brushed prior to painting. Where there is rust

evident or the surface has peeled or blistered, the area shall be cleaned to bare metal and a

coat of zinc based primer applied to the area prior to painting.


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Projects Engineer


e) Any woodwork that shows signs of peeling or blistering after the initial power wash will

be sanded down to bare wood and spot primed prior to painting.

II. Technical Specification for Painting Work

Paint surfaces as directed by the task order. Match paint to similar adjacent materials or surfaces.

(1) "Paint" includes coating systems materials, primers, emulsions, enamels, stains, sealers and

fillers, and other applied materials whether used as prime, intermediate or finish coats.

(2) Product Data: Contractor shall submit manufacturer's technical information, label analysis,

and application instructions for each paint material proposed for use to the COR, prior to

starting work. As an attachment, list each material and cross-reference specific coating

and finish system and application. Identify each material by the manufacturer's catalog

number and general classification.

(3) Single Source Responsibility: Provide primers and undercoat paint produced by the same

manufacturer as the finish coats.

(4) Material Quality: Provide the manufacturer's best quality trade sale type paint material

(Marine/Salty weather resistance paint). Paint material containers not displaying

manufacturer's product identification will not be acceptable. “Siliseal brand” paints or

equivalent are preferred for both interior and exterior.

(5) Deliver materials to the job site in manufacturer's original, unopened packages and

containers bearing manufacturer's name and label with trade name and manufacturer's

instructions.


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Projects Engineer


(6) Store materials not in use in tightly covered containers in a well-ventilated area at a

minimum ambient temperature of 45 degrees F (7 degrees C). Protect from freezing. Keep

storage area neat and orderly. Remove oily rags and waste daily.

(7) Project Conditions: Do not apply paint when the relative humidity exceeds 85 percent, at

temperatures less than 5 degrees F (3 degrees C) above the dew point, or to damp or wet

surfaces. Apply paint only in temperatures in accordance with manufacturer's

specifications.

(8) Examine substrates and conditions under which painting will be performed for compliance

with requirements. Do not begin application until unsatisfactory conditions have been

corrected.

(9) Preparation:

Remove hardware and hardware accessories, plates, light fixtures, and items in

place that are not to be painted, or provide protection such as taping prior to surface

preparation and painting. (Taping includes windows, door jams, etc.)

Clean and prepare surfaces to be painted in accordance with manufacturer's

instructions before applying paint or surface treatments. Remove oil, dust, dirty,

and loose rust, mildew, peeling paint or other contamination to ensure good

adhesion. In some cases, Contractor may be required to remove all existing coats

of paint and sealers if prior paint application is showing signs of improper adhesion,

i.e. such as peeling, chipping. All surfaces must be clean and dry. Schedule

cleaning and painting so dust and other contaminants will not fall on wet, newly

painted surfaces.

Notify the owner in writing of problems anticipated for any minor preparatory work

required, such as but not limited to, filling nail holes, cleaning surfaces to be

painted, and priming any requisite areas. Plan preparatory work as some areas will


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Projects Engineer


have nail holes or areas that will need to be primed or sealed. Replace all covers

and equipment after painting.

(10) Materials Preparation: Mix and prepare paint in accordance with manufacturer's

directions. Do not water down or thin paint.

(11) Application: Apply minimum of three coats of paint in accordance with

manufacturer's directions. Use applicators and techniques best suited for substrate

and type of material being applied. Do not paint over dirt, rust, scale, grease,

moisture, scuffed surfaces, or conditions detrimental to formation of a durable paint

film.

(a) Contractor shall paint color samples of the color to be used on a

section of the intended area to be painted before the actual paint date is

scheduled to ensure that the color selected is the most appropriate color

available.

(b) On exterior masonry surfaces and soffits, apply a high quality

exterior grade latex base paint that matches as closely as possible the

existing color on the exterior of the property, or a color as otherwise

specified by the owner. Prior to painting, the surface is to be scraped,

sanded, filled, and primed with a latex base primer. The contractor should

plan on extensive preparatory work prior to painting. Do not apply exterior

paint in rain, fog or mist; or when the relatively humidity exceeds 85

percent; or to damp or wet surfaces. Apply a 30-inch high from ground

level a black oil based paint “skirting” around the perimeter of all

building and/or wall surfaces which are to be painted. In exterior

staircases the skirting shall be reduced to a height of 6 inches from the top

edge of each step. Paint all fascia board with oil based paint.

(c) Provide finish coats that are compatible with primers used.


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(d) The number of coats and film thickness required is the same regardless of

application method. Do not apply succeeding coats until previous coat has

cured. Sand between applications where required to produce a smooth, even

surface.

(e) Apply additional coats when undercoats or other conditions show through

final coat, until paint film is of uniform finish, color, and appearance.

(12) Scheduling Painting: Apply first-coat to surfaces that have been cleaned, pretreated

or otherwise prepared for painting as soon as practicable, and before subsequent

surface deterioration. Allow sufficient time between successive coats to permit

proper drying. Do not recoat until paint has dried.

(13) Minimum Coating Thickness: Apply materials at the manufacturer's recommended

spreading rate. Provide total dry film thickness of the system as recommended by

the manufacturer.

(14) Prime Coats: Before application of finish coats, apply a prime coat as

recommended by the manufacturer to material required to be painted or finished,

and has not been prime coated.

(15) Brush Application: Brush-out and work brush coats into surfaces in an even film.

Eliminate cloudiness, spotting, laps, brush marks, runs, sags, ropiness, or other

surface imperfections. Draw neat glass lines and color breaks.

Apply primers and first coats by brush unless manufacturer's instructions permit

use of mechanical applicators.


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Projects Engineer


(16) Mechanical Applications: Use mechanical methods for paint application when

permitted by manufacturer's recommendations, governing ordinances, and trade

union regulations.

Wherever spray application is used, apply each coat to provide the equivalent

hiding of brush-applied coats. Do not double-back with spray equipment building-

up film thickness of two coats in one pass, unless recommended by the

manufacturer.

(17) Upon completion of painting, clean glass and paint-spattered surfaces. Remove

spattered paint by washing, scraping or other proper methods, and using care not to

scratch or damage adjacent finished surfaces.

(18) Remove temporary protective wrappings after completion of painting operations.

B.2.5 Parquet/Wooden Floor Refinishing

I. Sanding the floor

Sand floor to bare wood to remove existing stain and finish, starting with course to medium grit

and finishing with fine grit sandpaper. Floor sander Machine is to be used for this work.

Begin with 40 grit sandpaper, or use the grit recommended for your sander. Sand the floor

for a second time, using 60grit sandpaper, and following the same techniques as you just

used for 40 grit.

Wait for the dust to settle, then vacuum the dust. Fill any small dents or nail holes with

Stainable Wood Filler.

Sand the floor for a third time, this final sanding should be done using no higher than 100

grit.

Contractor shall replace any damaged/broken wood with similar wood type before staining

the floor.


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Projects Engineer


Wipe or vacuum up all dust on baseboards, windows, sills, doors, door frames and other

surfaces. Clean from the highest surface to the lowest, in that order.

Thoroughly wipe the floor with a clean cloth dampened with mineral spirits and allow

drying.

II. Staining the Floor

Stir stain thoroughly before and occasionally during use. (Woodoc indoor wood Stain from

Nabaki Africa of similar color scheme is recommended).

Start in a back corner, and apply the stain with a natural bristle brush or clean cloth.

Apply the stain in the direction of the grain. Let the stain penetrate until you achieve the

desired color. Remove excess stain with a clean cloth. Wait 4-6 hours to obtain darker color

as existing, and then apply a second coat.

Once the floor is stained, let it dry for at least eight hours before applying Super-Fast-

Drying Polyurethane for Floors finish.

III. Topcoat Application

Contractor shall;

Apply Sanding sealer to seal bare wood floor, then sand it before applying finish clear coat.

Apply a thin coat of clear finish starting on the wall sides using a lambswool or synthetic

pad applicator or a natural bristle brush. Maintain a wet edge to avoid lap marks, preferably

overlapping into the finish you previously applied by several inches.

Let the floor dry at least 3-4 hours until film is no longer tacky, and can be walked on in

soft, flat shoes without damaging the surface


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Projects Engineer


Not sand the surface after application of the first clear coat.

Apply a second clear coat surface floor finish following the same steps as used for the first

coat.

B.2.6 Main Entrance/Exit Gates Replacement

I. General Requirements;

The gates have to have a pedestrian access.

The gates have to have door viewers.

The gates have to have anti-climb spikes topper.

II. Specific Requirements;

Contractor shall;

Carefully, remove existing old vehicle entrance/exit gates and dispose it.

Provide temporary gate when working with the new one. N.B The place should not be left

open after removing the old gate.

Supply and install two wings galvanized metal/Aluminum gates of same size as existing

with access to pedestrian entrance (1250 wide and 2000mm high). For both entrance and

exit gate.

Install metal door lock (Orlando type preferably) & heavy duty door closer on pedestrian

gate.

Contractor shall then paint the gates with right paint for metal (2k acrylic paint) where

required and do all other necessary finishing works.

B.2.7 Stone Floor (Tanga Stone) Resealing/Vanish

B.2.7.1 Contractor shall pressure wash (deep cleaning) existing surface and remove any

loose/old vanish.

B.2.7.2 Contractor shall then repair any damage observed on stones surfaces and all cracks and

open joints shall be filled with appropriate cement motor ratio.


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Projects Engineer


B.2.7.3 Contractor shall then allow a minimum of 24 hours drying time (curing) before

application of new finish coats.

B.2.7.4 Apply 3 coats of SandStone Sealer or StoneShield from Nabaki for final finish coats.

B.2.7.5 The final finish coats should be matt finish (leaving the stone with natural color), water

repellant and prevent bleaching/discoloration of the stone.

B.2.8 RISING BOUNDARY WALLS

B.2.8.1. Temporary and carefully remove the existing metal spikes on top of the walls.

B.2.8.2. Demolish/hack the upper part of the existing walls ready to receive additional

courses on top, hacking will facilitate strong bond between the existing blocks and

the new one.

B.2.8.3. Construct 150mm thick block and 600mm high including plastering.

B.2.8.4. Treat/Fill all the openings and crakes current present at the walls with good ratio

cement mortar mix before painting.

B.2.8.5. Prepare well the surface to receive two undercoats and one finishing coat of

weather guard paint.

B.2.8.6. Install back the metal spikes which are in good shape replace any broken or bent

spike with new one. The distance between spikes and the protruding length of the

spike should be same as existing one.

B.2.8.7. Install new Concertina wires (stainless steel covered in plastic green cover) on top

of the walls along with metal spikes for the entire perimeter walls.

B.2.9 GUESTS’ TOILETS RESTORATION

Contractor shall:

B.2.9.1 Carefully, remove all exterior and interior rotten doors and dispose.

B.2.9.2 Remove old floor tiles without causing damage to other properties.

B.2.9.3 Remove old/rotten ceiling overhang around the building and dispose.


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Projects Engineer


B.2.9.4 Contractor shall then, prepare the floor surface ready for installation of new tiles, following

proper tilling procedures.

B.2.9.5 Inspect and replace any damaged/rotten timber before installation of new ceiling board.

B.2.9.6 Supply and install new hardwood interior and exterior doors with all necessary fitting

accessories together with door locks. (Orlando type preferably).

B.2.9.7 Supply and install new ceramic floor tiles of the same size (300 x 300), color is to match

existing wall tiles.

B.2.9.9 Supply and Install new Duravent ceiling board for the roof overhang for the entire building.

B.2.9.10 Supply and install new bathroom mirrors for both males and females toilets in

replacement of old mirror currently installed.

B.2.9.10 Contractors shall submit all samples of materials/items to be installed to COR for

approval prior installation work.

B.3.0 SUBMITTALS (EVALUATION CRITERIA)

The Contractor shall submit the following as part of their bid:

3.1 Technical proposal with clearly stated work method statement.

3.2 Material Data Sheet/ Shop drawings for all paints as specified above.

3.3 A tentative schedule for the project which shall not exceed the government estimate of

30 working days/4 weeks.

3.4 Company organization Chart portfolio, including previous similar works, references,

and CVs of key Personnel for this project.

3.5 Project Supervisor/Manager holding a degree in a civil engineering and at least three

years’ experience in construction projects managements works.


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Projects Engineer


B.5 CONDITIONS OF CONTRACT

B.5.1 General

This is a firm fixed price turnkey project and amount quoted shall include all work described in

the scope of work and the general condition of contract. The lump sum price quoted shall be fixed

and nothing extra will be entertained on any account.

The Contractor shall restore all surfaces disturbed by the work to match with existing surfaces.

Any deviation from the original contract/scope of work shall be reported to the Contracting Officer

Representative (COR) before work begins, and approved by the Contracting Officer (CO). No

additional work or changes will be carried out without a contract modification and prior approval.

B.5.2 Responsibilities of the Contractor

The Contractor shall be responsible for procuring, supplying, transporting, and providing

all labor, materials, tools and equipment etc., required for completion of the work in all

aspects and as per the scope of work.

All expenses towards mobilization at site and demobilization including bringing in

equipment, workforce and materials, dismantling the equipment, clearing the site etc. shall

be deemed to be included in the rates quoted by the Contractor against various items of

schedule of rates and no separate payment of such expenses shall be considered or granted.

The Contractor shall employ and provide one full time civil engineer to supervise the

project. The assigned engineer should have proven prior experience of carrying out such

type of work.

The Contractor shall not proceed with the next scheduled activity until the previous activity

has been checked and approved by the COR. The Contractor shall note all inspection dates

in the schedule chart.


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Projects Engineer


The Contractor shall keep the site clean and accessible to Embassy employee at all times.

All required permits to execute the project shall be the sole responsibility of the Contractor.

B.5.3 Specifications

Work under this contract shall be carried out strictly in accordance with the specifications attached

and will meet U.S. and Local codes.

B.5.4 Execution of Work

The Contractor is advised to review the material specifications and the scope of work. The

Contractor should visit and walk through the site to familiarize themselves with the site conditions

and to understand the exact quantity and quality of work

Within 3 working days of Contract Award, the Contractor shall submit the following items via

email:

a. Bar chart for review and approval by the COR. All dates and time schedules agreed upon shall

be strictly adhered to. The Contractor shall notify the COR in advance regarding anticipated

problems or delays throughout the project, or any deviation of the schedule.

b. Weekly schedule/activity plan for the coming week for the duration of the project prior to the

start date.

3. For dismantling/blocking or making connection to any existing services or any shut-down,

Contractor shall inform the COR at least 3 (three) working days in advance and proceed with the

work only after approval from the COR.

B.4.5 Project Duration:

The duration of the project shall not be more than 35 working days.

B.5.6 Materials


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i. All materials used on this work shall be new and conforming to the contract specifications as per

US and local codes.

ii. Materials shall conform to the latest US Standards specifications as amended to date and carry

certification mark. Contractor shall submit material samples and catalogues for pre-approval.

iii. All materials used on the project shall be approved by the Contracting Officer Representative

(COR) before use. Any changes/substitutes on material shall be approved by COR before

proceeding.

iv. All materials shall be stored in a proper manner and protected from natural elements so as to

avoid contamination, damage, or deterioration.

B.5.7 Site Clearance and Cleanup

i. The Contractor shall clear away all debris and excess materials accumulated at the site and

dispose of it away from the premises daily, maintaining a neat site condition.

ii. Upon project completion, the Contractor shall remove all surplus materials and leave the site in

a broom clean condition.

B.5.8 Workmanship

Workers working on the site shall be skilled in their job and have relevant job experience.

B.5.9 Working Hours

1. Working hours shall be from 08:00 A.M. to 5:00 P.M from Monday to Sunday.

B.5.10 Safety procedures

I. Scope and Application

Contractor must meet with POSHO or representative before each phase of work begins to discuss

safety concerns and agree upon appropriate PPE, methodology, and risk mitigation plans.


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Contractor shall acknowledge POSHO authority to specify methods and safety equipment, and

monitor the work until complete, approved, and shut down.

This document applies to all Contractors and sub-Contractors working at or on American Embassy

property owned or leased as specified in the scope of work. While working on U.S. Government

projects the Contractor or sub-Contractor are responsible for maintaining an agreed upon and

approved level of safety for the workers and the public.

II. This basic requirement is as follows:

1. Proper Protective Equipment will be worn by workers while in any work area or while

performing tasks that create hazards for workers. The requirements listed below are minimum

requirements, and may be supplemented or added to by the POSHO.

a. Safety glasses will be worn while performing the following

i. Drilling

ii. Chiseling, chipping

iii. Wood working, metal working

b. Hearing protection will be provided for all those who operate loud power tools and equipment.

i. Hard hats will be worn in areas where falling objects are a hazard.

c. Gloves will be worn for cleanup and removal of work area waste and materials. i. Proper

footwear will be worn by all workers, including safety shoes.

d. Electrical issues i.e All power cords and power taps will be wired appropriately, leaving no

exposed wires that are live or could come in contact with staff or other personnel.

ii. While working on electrical systems proper lockout/tag-out procedures will be followed, and

the circuit being worked on will be de-energized (turned off at the main breaker).

iii. Power cords and temporary power will be GFCI protected and shall not be placed in areas that

are prone to flooding or are wet, (i.e. running through puddles on the floor).


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iv. Equipment will be plugged into a standard GFCI-protected receptacle and not wired directly

into power taps.

e. Waste cleanup and removal i. All excess or waste materials will be removed from the site at the

close of each work day. Debris will be removed to include food bags and containers. Staging of

materials shall be in an agreed upon location.

f. Safety meetings shall occur at least once a week with at least one Embassy staff member present,

unless otherwise approved.

B.6 NOTICE OF DELAY

In the event the Contractor receives a notice of any change in the work, or if any other conditions

arise which are likely to cause or are actually causing delays which the Contractor believes may

result in completion of the project after the completion date, the Contractor shall notify the

Contracting Officer of the effect, if any, of such change or other conditions upon the approved

schedule, and shall state in what respects, if any, the relevant schedule or the completion date

should be revised. Such notice shall be given promptly and not more than two (2) days following

the first occurrence of event giving rise to the delay or prospective delay. Revisions to the

approved time schedule shall only be made with the approval of the Contracting Officer.

B.7 LIQUIDATED DAMAGES - CONSTRUCTION (APR 1984)

If the Contractor fails to complete the work within the time specified in the contract, or any

extension, the Contractor shall pay to the Government as liquidated damages, the sum of one

percent (1%) for each calendar day of delay.

B.8 EXECUSABLE DELAY

The Contractor will be allowed time, not money, for excusable delays as defined in FAR 52.249-

10, Default. Examples of such cases include (l) acts of God or of the public enemy, (2) acts of the

United States Government in either its sovereign or contractual capacity, (3) acts of the

government of the host country in its sovereign capacity, (4) acts of another contractor in the


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performance of a contract with the Government, (5)fires, (6) floods, (7) epidemics, (8) quarantine

restrictions, (9) strikes, (l0) freight embargoes, (11) delays in delivery of Government furnished

equipment and (12) unusually severe weather. In each instance, the failure to perform must be

beyond the control and without the fault or negligence of the Contractor, and the failure to perform

furthermore (1) must be one that the Contractor could not have reasonably anticipated and taken

adequate measures to protect against, (2) cannot be overcome by reasonable efforts to reschedule

the work, and (3) directly and materially affects the date of final completion of the project.

B.9 WARRANTY

The contractor shall guarantee that all work performed will be free from all defects in workmanship

and materials and that all installation will provide the capacities and characteristics specified. The

contract further guarantees that if, during a period of one year from the date of the certificate of

completion and acceptance of the work, any such defects will be repaired by the Contractor at his

expenses.


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Projects Engineer


B.10 BILLS OF QUANTITIES (BOQ)

CLIN ITEM DESCRIPTION UNIT QTY MATERIAL

UNIT COST

LABOUR

UNIT COST

VAT TOTAL

COST

B.2.1 Thoroughly Interior

painting as stated above.

m²

B.2.2 Thoroughly exterior

painting as stated above.

m²

B.2.3 Painting all metal works.

Lots

1

B.2.4 Wood work refinishing

with approved wood

sealant/vanish.

Lots

1

B.2.5 Parquet/Wooden Floor

refinishing.

m²

B.2.6 Replacement of Main

entrance/exit gates.

Item 2

B.2.7 Stone works

refinishing/sealing

m²

B.2.8 Extension of boundary

walls to at least 9Ft high.

m²

B.2.9 Renovation of

guests’/Outdoor toilet.

Lots 1

b. scope of work b.1 introduction€¦ · b.2.4 all wood works (doors and wardrobes) refinishing...

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