2448 x 3264 px | 20,7 x 27,6 cm | 8,2 x 10,9 inches | 300dpi
Date de la prise de vue:
9 février 2014
Lieu:
Abu Dhabi - United Arab Emirates
Informations supplémentaires:
METHOD STATEMENT FOR BORED PILING GENERAL The method statement for bored piling below describes the whole construction procedures including material and equipment required for the construction of bored cast-in-situ piles Detail of the procedures contained herein maybe reviewed periodically and modified based on actual requirement The piles to be constructed will be of a nominal specified diameter, bored through overlying soils to found in the bedrock strata or remain in the soil to act as shaft friction and end bearing piles. The piles are designed by the Engineer to resist axial compressive loads. BORED PILES CONSTRUCTION The pile boring operations shall be performed using the suitable rotary drill rigs depends on the diameter, depth, soil condition and construction method. If necessary, the bore-holes shall be stabilized with a temporary casing in the upper layer (depends on soil and site condition) .The length of the casing will be determined from the actual soil condition encountered on site. Bentonite shall be used for unstable subsoil condition and for piles equal and more than 1800mm diameter. SETTING OUT The location of permanent bored piles shall be set out and pegged by the subcontractor’s surveyor based on approved setting out drawings from consultant and control points at site. The surveying details of each location to be recorded incorporating reduced level and coordinates. Each individually surveyed pile position shall be protected from disturbance prior to commencement of boring works. Two reference points to be installed equidistant at not less than 2.0m from the pile centre location. A pilot hole of about 3-6metre deep shall be drilled at the pile location. The eccentricity and alignment of the pilot hole is then checked. DRILLING Prior to commencing any operations, the client representative will be required to verify all associated technical information such as presence of services, pile coordinates, platform and cut-
