Public Works Department Tender

Construction of Reinforcement cement concrete chamber 150x150x200cm inside with 30 cms wall thickness in Cement Concrete 1:2:4 (1cement: 2coarse sand:4 graded granitic or basaltic stone aggrt. 20mm. nominal size) including centering /shuttering and TMT steel not less than 70kg/cu.m, for sluice valves or equivalent main valves of suitable diameter, with necessary excavation, 15cms thick rubble packing and 10cms thick foundation concrete 1:3:6 (1cement: 3 coarse sand: 6 graded granitic or basaltic stone aggrt. 40 mm nominal size) and inside plastered with cement mortar 1:3 ( 1 cement : 3 coarse sand) finished with floating coat of neat cement complete and as per standard drawing (rate is inclusive of earthwork excavation, and all other materials and labour as per details above ,excluding cost of surface chamber cover) as directed by the Engineer in charge

(A)Manufacturing, Fabricating supplying and fixing in position over the main valve chamber. Two/three shutter M. S. cover, manufactured out of 10mm thick M.S.plate ,size (1.8mx1.8m),with bottom angles of size 75x75x8mm supporting parallel in the middle M.S. I beam of size 150x100 as per requirement & size of chamber with both side extended 20cm to 30cm to be fixed in the wall further supporting Diagonal angles and cross angles of size 75x75x8mm to both way perfectly hinged with 8nos of bar hinges capable to withstand heavy vehicle impact 4 nos. of handles made out of 12mm to 16mmdia bar, bottom side locking arrangement for both main shutter as well a side shutter, and welded 4 nos. of holdfast of L.S. 75x75x8mm to 40cm-long 4nos of bar hinges of high strength double angles and hold fast should be embedded in reinforcement concrete of 1:2:4 or richer mix incl. Transportation, labour, Priming coat, painting etc. complete As per standard drawing.(10mm thick ,1.8m x 1.8m, M.S plate for surface cover for R.C.C chamber size, 150x150x200cm) as directed by the Engineer in charge.