Title : EXCAVATION WORK
Subject : Procedure for the PERFORMANCE OF EXCAVATION WORK.
Reference : 1 Project Quality Plan
2 Standard National Indonesia ( SNI)
General.
The work procedure as given herein are to be applied for the handling of the excavation to the extent necessary to conform with the finished grades, cross sections and dimensions as shown on the drawing. All excavated ares shall be finished to an even surface and compacted to the density of the surrounding material. Water filled ares shall be dewatered before excavation commences.
Method of excavation.
Normally, there are two kind of excavation work method, namely (1) By manual for narrow area, and (2) by mechanical method (using the exacvator machine) especially for excavation with big volume and deep conditions.
Excavation for fondation.
Foundation shall be excavated to teh depths and for the full lenghts and widths as required per drawings. Roots, stones and other debris accuring within the excavated areas shall be removed and made good with available earth to pressure a solid foundation. All loose material shall be removed before finally levelling the excavation.
Over excavation shall be filled with local earth material from site in layers not more than 300 mm thick and compacted to a density equal to the original foundation material.
Exacavtion work more than 1.7 m deep will be added with shoring by use of temporary timber constructions. The timbering or shoring shall be properly constructed to wthstand earth pressure or any other pressure occuring during the construction.
Disposal of local surplus material.
Unsuitable material suac as roots, trees, hedges, waste vegetations and debris are to be removed from site. Suitable materials will to be extent as possible be used in site for backfilling material, regrading and landscaping of ather parts of the site.
Tidak ada komentar:
Posting Komentar