Municipal Corporation Tender

Supply, erection, testing & commissioning of 12.5 Meter High Mast based on the following parameters/ requirements of the Deptt. Height of Mast: 12.5 Meter with power tool based. The power tool 3 phase motorized 1.1 KW complete in all respect should be installed in the pole Reputed ISI marked only. Wind speed: 180 Km/hour as per IS-875 (Part-III).The High Mast & head frame shall be structurally suitable to accommodate the 8 Nos.LED flood light fittings & its control gear boxes.

Construction of the Mast: The mast shaft shall be manufactured from high tensile steel plates confirming to BS EN 10025 having minimum yield strength of 355N/Sq. mm. Each mast shaft section shall be without any circumferential weld joint except base flange. The mast base flange shall be free from any lamination or incursion and provided with supplementary gussets between the bolt-holes to ensure elimination of helical stress concentration. The minimum A/F dimension of top shall be 150 mm (min.) and bottom 360 mm (min.). The mast should have two sections and the sections shall be joined at site by slip-stress-fit method and the sections shall be joined at site by slip-stress-fit method and minimum overlap distance shall be 1.5 times the diameter at penetration. A door reinforced with welded steel section, vandal resistant, weather proof with Allen bolts and pad locking facility of dimension not less than 1200 mm x 250 mm shall be provided at a height 2 times the width of door from the base of mast to provide clear access to base compartment Equipments winch, motor, cable, connector etc. For the environmental protection of the mast, the entire fabricated mast shall be hot dip galvanized internally and externally in single dip having a uniform average thickness of 85 microns for plates more than 5 mm and 70 microns for 5 mm and less thickness.

Code No.: I.S. 875 (Part III) 1987 Amended up to date Title: Code and practice for design loads for structures under Code No.: BSEN 10025 Title: Grades of M.S. plates Code No.: BS 5135/AWS D 1.1 Title: Welding Code No.: BSEN ISO 1461 Title: Hot dip galvanizing Code No.: TR. No. 7 (2000 addition) of ILE, UK. Title: Specification of Mast and foundation. Code No.: IS 3459 / 2266 Title: Stainless steel Wire rope Code No.: IS 9968 Part – 1 Title: Trailing Cable Code No. IS 325 Title: Motor