Embassy of the United States of America Dar es Salaam ... by; Diana M Babu US Embassy Project...

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Diana M Babu US Embassy Project Engineer.

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Embassy of the United States of America

Dar es Salaam, Tanzania

March 16, 2018

Subject: Scope of work for Supply, Fabricate and Install 2 (two) heavy duty steel drop

arm Vehicle Barrier.

Introduction:

This Statement of work describes the Construction Methodology and procedures

amidst other details for the actualization of the summary task in respect of the subject

project for the Engineering, Procurement, Installation and Commissioning (EPIC) of

drop arm barrier for CAC 3&4 at NEC Dar es Salaam mission. This Method Statement is

however to be read and applied in conjunction with the approved Project Health and

Safety Plan (HSE Plan).

DESCRIPTION/SPECIFICATIONS

STATEMENT OF WORK

1 CHARACTER AND SCOPE OF WORK

1.1 General: The Contractor shall Supply, Fabricate and Install Two (2) Drop Arm

vehicle barrier at U.S Embassy Dar es Salaam CAC 3&4 area as per the attached

SOW and appendixes.

1.2 All vehicle barriers shall be made of:

1.2.1 Steel

Deformed steel reinforcement shall be new billet steel, Grade 40 (Anti-ram

designs) and shall comply with American Concrete Institute standard (ACI)

318 and American Society of Testing Materials standards (ASTM) A-615.

Placement of reinforcement shall be governed by ACI 318. Placing plans and

shop details shall be in accordance with ACI 315 and shall be provided as

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shop drawings during the installation. Furnish support bars in accordance with

CRSI standards.

Structural steel shall be carbon steel (ASTM A-36) having a minimum tensile

strength of 400 to 550 Mpa. All structural steel shall be designed in accordance

with the American Institute of Steel construction (AISC) – Specification for

Design, Fabrication, and Erection of Structural Steel for Buildings.

1.2.2 Installation

The following steps describe the recommended method of installation of the

barrier.

A. Excavate the foundations (1800 x1000 x1000) mm as shown in the

drawings in appendix 2 below.

B. Attach guide rails to stanchion “A” at 900mm from the top of the base

Plate. (See the photographs in appendix 1 below).

C. Place stanchion “A” in to the corresponding foundation. The rails should

act as an aid to sit the barrier square, level and at the correct height above

ground.

D. Attach guide rails to stanchion “B” and place into the corresponding

excavated foundation.

E. Once both stanchions are positioned lower the arm into position, small

adjustments can be made to provide the 4.5m aperture width and ensure

that the barrier arm is parallel to the ground.

F. Remove any groundwater from the excavated foundations and pour the

concrete grade 30 around each stanchion. The mixture should spread

evenly using a vibrating device to ensure a consistent filling of each

excavation.

G. Level the concrete and wait for it to set before removing the guide rails.

Cure the concrete for first 7 days.

H. Fix the main ballast weight into position (after the concrete has cured),

and secure with bolts from underneath.

I. Once the barrier is in position, ballast is added.

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Note: it is important that the ballast is arranged correctly to keep the

canter of gravity of the barrier arm in the correct place

J. A cord should then be attached to the barrier arm through the eye at the

lock end, as an aid to controlling the opening and closing of the barrier.

K. Undertake post-installation inspection and commissioning before the

barrier is operational.

NB: APPENDIX 1 FOR PHOTOS BELOW ON HOW TO INSTALL AND

APPENDIX 2 FOR DIMENSIONS.

2 SURVEY

a. The contractor should survey the property and verify the work required

against the task order before beginning work, to determine if any

discrepancies exist. The contractor shall be responsible for any errors,

which might have been avoided by such a survey/review. The contractor

shall immediately report any discrepancies to the COR (contracting

officer’s representative) or the Contracting Officer and shall not begin

work until such matters are resolved.

b. The contract will be a firm fixed price contract payable entirely in the

local Currency (TZS). No additional sums will be payable on account of

any escalation in the cost of materials, equipment or labor, or because of

the contractor's failure to properly estimate or accurately predict the cost

or difficulty of achieving the results required by this contract. Nor will the

contract price be adjusted on account of fluctuations in the currency

exchange rates. Changes in the contract price or time to complete will be

made only due to changes made by the Government in the work to be

performed, or by delays caused by the Government.

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3 GENERAL

(a) The contractor shall repair, which includes patching and painting all

areas disturbed and or damaged as a result of the contractor’s work.

(b) The contractor shall specifically list all equipment, services and/or

materials that the contractor will not provide as a part of this project.

(c) The contractor is responsible for any damage, theft or loss caused by

him &/or his team at the work site

(d) The contractor shall ensure that the work site is cleaned up everyday

and free of safety hazards as a result of the contractor’s action or

inaction.

(e) The contractor shall be responsible for safeguarding all U.S.

government property which he, or his employees, comes into contact

with during the work period.

(f) The contractor shall provide a one-year guarantee in writing covering

parts and labor on work. The contractor at no additional cost to the

U.S. Government shall correct any damage or faults occurring during

the guarantee period.

(g) Changes to the scope of work or schedule may only be approved by

the American Embassy contracting officer or his representative and

must be in writing.

(h) All aspects of this project including required documentation must be

completed or submitted as required before final payment will be

authorized.

4 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

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relevant schedule or the completion date should be revised. Such notice shall be given

promptly and not more than three 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.

5 LIQUIDATED DAMAGES - CONSTRUCTION (APR 1984)

(a) 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 of the contract value for each calendar day of delay.

6. WORKING HOURS

All work shall be performed Monday through Friday 7:30 to 17:00 except for local and

American public holidays. Other hours may be approved by the Contracting Officer's

Representative. Notice must be given 48 hours in advance to COR who will consider any

deviation from the hours identified above.

7 EXCUSABLE DELAYS

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 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.

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8. PROPOSAL SUBMISSION

8.1. Schedule

When submitting proposal the contractor shall submit a project schedule. This schedule

shall be in the form of a Gantt chart or similar. The schedule shall clearly outline each of

the major tasks to be completed and shall show specific benchmark dates on when each

task will be completed. When the Government has accepted any time schedule, it shall

be binding upon the Contractor. The completion date is fixed and may be extended only

by a written contract modification signed by the Contracting Officer. Acceptance or

approval of any schedule or revision thereof by the Government shall not (1) extend the

completion date or obligate the Government to do so, (2) constitute acceptance or

approval of any delay, nor (3) excuse the Contractor from or relieve the Contractor of its

obligation to maintain the progress of the work and achieve final completion by the

established completion date.

8.2. Cost Breakdown.

The contractor must submit technical and costs proposal separately, further the contractor

shall breakdown the materials and labor costs.

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APPENDIX 1 –INSTALLATION PROCEDURES.

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APPENDIX 2 DIMENSIONS AND

MEASUREMENTS.

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