Excavation Requirements. 1. Definition: "Excavations include any operation in which earth, rock, or other material in the ground (below existing grade) is moved, removed, or otherwise displaced by means or use of any hand tools, mechanical equipment or explosives.”
Excavation Requirements. In order to ensure the integrity of the NASA cable plant, electrical power distribution system, water and wastewater distribution systems, high pressure air lines, storm drainage systems, and steam distribution systems, an excavation permit is required prior to any digging activity at Wallops Flight Facility. Application for an excavation permit shall be submitted to the COR at least fifteen working days prior to a specific excavation activity. No reasonable request for a permit will be denied. Excavation shall not commence prior to the issuance of an excavation permit. For purposes of this clause, excavation is to include any digging activity whether this be a single posthole, surface grading, cable and pipe trenching, or a foundation system. Excavation will be implemented according to the procedures issued at the time of permit approval and the Contractor will be required to hand dig to determine the exact location of identified utilities. In no event will the Government’s failure to issue a permit relieve the Contractor from its obligation under the contract or waive the Government’s right to timely and satisfactory performance of this contract.
Excavation Requirements. It is anticipated that the materials to an average depth of about 1.5 metres below existing ground level, will require Soft to Medium Excavation and below 1.5m will require hard rock excavation (SANS1200). Site Investigation/Survey All designs and design levels were calculated based on the survey provided by Eskom’s Land Development Department. All setting out data will be referenced from the survey and its control points / bench marks provided. Services (Read with SANS 1921 - 1: 2004 clause 4.17) The Contractor shall make himself acquainted with the position of all existing services before any excavation or other work likely to affect the existing services is commenced. The Contractor will be held responsible for any damage to known existing services caused by or arising out of his operations and any damage shall be made good at his own expense. Damage to unknown services shall be repaired as soon as possible and liability shall be determined on site when such damage should occur.
Excavation Requirements. It is anticipated that the materials to an average depth of about 1.5 metres below existing ground level, will require Soft to Medium Excavation and below 1.5m will require hard rock excavation (SANS1200). Site Investigation/Survey All designs and design levels were calculated based on the survey provided by Eskom’s Land Development Department. All setting out data will be referenced from the survey and its control points / bench marks provided. Services (Read with SANS 1921 - 1: 2004 clause 4.17) The Contractor shall make himself acquainted with the position of all existing services before any excavation or other work likely to affect the existing services is commenced. The Contractor will be held responsible for any damage to known existing services caused by or arising out of his operations and any damage shall be made good at his own expense. Damage to unknown services shall be repaired as soon as possible and liability shall be determined on site when such damage should occur. The contractor himself shall make arrangements for procuring, transporting, storing, distributing and applying the water needed for construction and other purposes, except where otherwise specified. No direct payment will be made for providing water, the cost of which shall be included in the rates tendered for the various items of work for which water is needed. Only clean water free from undesirable concentrations of deleterious salts and other materials shall be used. All water sources shall be subject to the engineer’s approval. Description of the works This civil contract includes in summary the following scope of work: Replacement of the diamond mesh fence with palisade fencing around the substation yard and earthing the fencing to the existing earth mat,. Installation of an oil containment dam with its associated drainage system, Also see the details on the drawings Earthworks (Refer drawings: ER-00625-17-01) All excavation work shall be subject to the requirements of the Occupational Health and Safety Act (Act 85 of 1993 and amendments). The Contractor shall ensure that working conditions are safe and that excavations are kept free of water at all times. No blasting is allowed on this project, the excavation and backfilling within the substation shall be undertaken by the use of mechanical or power equipment where it is necessary and is deemed safe by the engineer. Allowance should also be made for excavation in hard rock material especially for oil dam and Manhole (...
