tender for laying the main sever line london bhai thoppu in ward no 49; 1 cutting the existing cement concrete road etc., complete as per standard specification. 2 earth work excavation and depositing on bank withinitial lead of 10 m and lift of 2 m in narrow trencheshaving bed width 1.25m & below for laying of pipes forwater supply and sewerage works in the following typeof soils as directed by departmental officers hard stiff clay, stiff black cotton, hard red earth, shales,murram gravel, stoney earth and earth mixed with smallsize boulders and hard gravelly soil.ss20b 3 supplying un plasticized pvc pipes for potable water supply as peris 4985 /2000suppling pvc 4 lowering pvc/ dwsc rigid pipes and specialsto trench and laying to proper grade andalignment, jointing with pvc couplers withcement paste. 5 refilling for pipelineworks having bed width of 1.25m 6 providingwbm75mmconsolidatedthicknessforthebottomlayerusing1.00cum.of63to45mmircsizegradedmetalwith0.24cumofgravelscreeningfor10sq.meterof75mmconsolidatedthicknessincludingcostandconveyanceofallmaterialstotheworksiteandstackingthemtothestd.departmentalgauge,labourchargesforspreading,themetalandgravel,handpackingmetaltocamber,wateringwithallleadsforwaterformingedgebundetc.andconsolidationbypowerrollerandhirechargesforallothert&pemployedetc.completeasperclause404ofministryofsurfacetransportspecification1m3bottom layerhire chargeswetmix 7 construction of manholes using sulphate resistant cement at various depths to invert including earthwork excavation asperss20b, laying cement concrete in c.m.1:3:6 using 40mm b.g. jelly for foundationsinking well kerb below g.l. for 4.5m depth and above, pumping, timbering charges for 2.5m depth and above, stock brick work in c.m.1:3, for 23cm thick wall and over 23cm thick wall, plastering interior with c.m.1:3, 20mm thick and exterior with c.m.1:3, 12mm thick, laying plain cement concrete 1:3:6 using 12.0mm to 20mm b.g. jelly fixing the frame, providing c.i. steps, manhole cover and frame etc. complete for the following sizes for each manhole (as per the type design drawing for manholes). cost of the manhole for upto 1.50 m depth 8 add gst 18%