this handbook will be given to contractors upon award of contract.

GSA safety and construction engineers will make frequent

inspections of the work and will be alert for possible violations of good safety and health practices. If any violations are observed, you will be directed to undertake appropriate remedies. If you fail to remedy the violations promptly, the contracting officer may issue a stop work order. You will not be entitled to any extension of contract time nor payment for any costs incurred as a result of the issuance of such a stop work order.

NON-COMPLIANCE WITH CONTRACT REQUIREMENTS

If a contractor receives written notice of non-compliance with any requirement of the contract, and if he fails to initiate prompt action to comply with the specific requirement within a reasonable period of time, the contracting officer has the right to order him to stop all work. In such a situation contractors will not be allowed to resume work until they either comply with the specific requirement in question or initiate action to comply within a reasonable time. Furthermore, contractors will not be entitled to any extension of contract time or payment for any costs incurred as a result of being ordered to stop work for such cause.

SAMPLES (EXHIBIT 41, Clause 21)

Contractors must furnish, for the approval of the contracting

officer, those samples as required by either the contracting officer Clause 21 of GSA 1139 gives the general

or the specifications.

procedures for submitting samples. The contract specifications may give more specific or detailed procedures. Materials and equipment for which samples are required can not be used in the work until approved in writing by the contracting officer.

Failure of any material to pass the tests will be sufficient cause for refusal to consider any further samples of the same brand or make of that material. Samples which do not meet specification requirements will be rejected. In addition, the Government reserves the right to disapprove any material or equipment which previously has proved unsatisfactory in service.

Unless otherwise specified, only one test of each sample will be made at the expense of the Government. Testing of additional

samples will be made by the Government at the expense of the

contractor.

SHOP DRAWINGS, COORDINATION DRAWINGS, AND SCHEDULES (EXHIBIT 41)

Shop drawings, coordination drawings, and schedules must be submitted for approval as required by Clause 20 of GSA 1139, the specifications, or the contracting officer. Before submitting shop drawings on the mechanical and electrical work, contractors must submit to the contracting officer, and obtain his approval of, the lists of mechanical and electrical equipment and material that are required by the specifications. Contractors must submit drawings and

schedules far enough in advance of the need for them to allow at least 10 working days for checking and any other appropriate action. Unless specifically stated in the contract documents, approval of drawings and schedules is of a general nature and must not be construed to mean the following:

1. Permitting any departure from the contract requirements;
2. Relieving the contractor of the responsibility for any

errors, including details, dimensions, or materials.

3. Approving departures from full-size details furnished

by the contracting officer.

If drawings or schedules show variations from the contract requirements, the contractor must describe the variations in his letter of transmittal. If the variations are approved by the contracting officer, he will issue an appropriate change order.

CERTIFIED PAYROLLS

Contractors must submit weekly a copy of all payrolls to the contracting officer. The prime contractor is also responsible for the submission of copies of payrolls of all subcontractors. The copy of payrolls must be accompanied by a statement signed by the contractor that the payrolls are correct and complete, that the wage rates contained therein are not less than those determined by the Secretary of Labor and that the classifications set down for each laborer or mechanic conform with the work he actually performed. The copy must be submitted no later than seven days after the close of the pay period. Delays or omissions in submitting copies of payrolls may serve as a basis for the contracting officer to delay the processing of progress payments.

GOVERNMENT-CONTRACTOR RELATIONSHIPS

It is essential that the contractor know the identity of, and the authority vested in, each of the authorized representatives of the contracting officer and other Government employees with whom he will have official contact. This information will be given to the contractor prior to the start of actual work, normally at the preconstruction conference. The contractor also will be informed in writing of any changes in personnel or their authority.

The Government will attempt to establish and maintain a cordial

but business-like relationship with contractors.

Instruction

will be given in a courteous and impersonal manner. The Government
will not become involved in any contractual relationship between
the prime contractor and his subcontractors.

For the contractor's protection, he should deal only with authorized representatives of the contracting officer and not personnel representing other Government agencies who may be occupying the building or otherwise have an interest in the project.

The primary contact between the Government and the contractor will

be between the construction engineer and the contractor's construction superintendent, who has been assigned to the project in accordance with the "Superintendence by Contractor" clause of SF 23-A. (EXHIBIT 31)

PERFORMANCE OF WORK BY PRIME CONTRACTOR

The prime contractor must perform work with his own forces equivalent to at least twelve (12) percent of the contract price. The contracting officer may use the cost breakdown submitted in accordance with the "Payments to Contractor" clause of GSA 1139 to determine if you are complying with this provision of the contract. This cost break