23. Requirements to works

    1. Land measuring

When performing works should be guided by the requirements of DBNV.1.3-2-2010 «Geodetic works in construction».

It is necessary to comply with the implementation of geodetic works cited in other construction regulations, state standards system to ensure the accuracy of geometrical parameters in construction, departmental regulations and documents of public oversight, agreed and approved in the established procedure, as well as perform additional requirements under the design documentation.

2. Earthworks

When performing works should be guided by the requirements of DSTU - NBV.2.1-28:2013 «Installation for the excavation and the unit bases and foundations».

  In the production of earthworks, foundations and basements should comply with existing regulations on the organization of construction, geodetic works, safety, fire safety regulations during construction and installation works.

Used in the construction of earthworks, construction of basements and foundations soils, materials, products and structures must meet the requirements of the projects, the relevant standards and specifications.

Replacement project provided soils, materials, products and structures that make up the erected structure or its foundation, is allowed only in agreement with the project organization and the Employer .

Performance of the earthworks is allowed only after completion of the geodesic staking works including carrying-over the design of earthworks to the nature and installation of corresponding staking signs.

Excavation works shall include the full range of works for installation of foundations.

Earthworks shall conform to the size of pits, as shown in the drawings.

The following actions shall be performed prior to the commencement of excavation works:

а) the representatives of the Employer and Contractor, carrying out joint approval of staking of a structure performed by the Contractor, shall establish such staking compliance with the Design and issue a statement accompanied with the staking layouts;

b) the Contractor shall coordinate with the local utilities implementation of excavation works at the locations of existing underground communications, for which the local utilities are responsible.

The Employer shall provide assistance to the Contractor in obtaining necessary approvals.

Performance of earthworks in the area of existing underground communications shall be executed under direct supervision of a foreman or supervisor, and if earthworks are performed in the protected live cables area, or in the existing gas pipeline area, addition supervision of electric or gas facilities employees is required.

If during earthworks or construction works, archaeological or historical arte facts are discovered, the Contractor shall stop further performance of works and within a day shall report about these findings to the appropriate authority for protection of cultural heritage and local authority in whose territory earthworks are performed.

If during earthworks it is determined that groundwater level does not match the design data, the Contractor shall notify the Employer about this and take measures to resolve the situation.

Backfilling of trenches shall be performed with layer-by-layer compaction. Layer thickness shall be not more than 200 mm.

Excessive and unusable soil excavated from pits and trenches shall be moved to places of laying, not allowing temporary dumps.

Technical quality control of earthworks shall be carried out during construction.

During acceptance of trenches and pits, compliance of their location, size, elevations, slope and soil composition of the foundations shall be verified for compliance with the project requirements.