school improvement grant works 2022-23 and 2023-24 construction of additional two class room building at government higher secondary school in thittachery town panchayat. , earth work excavation for foundation and depositing on bank for refilling within an initial lead of 10.00 m and an initial lift of 2.00 in hard stiff clay. stiff black cotton soil, hard red earth, sales, murrams, gravel, stoney earth, earth mixed with small sized boulders and hard gravelly soil and except hard rock requiring blasting including shoring, strutting, bailing water wherever necessary and all other incidental charges etc., complete as directed by departmental officers as per s.s.20b , plain cement concrete 1:4:8 mix, (one part of cement, four part of sand andeight part of aggregate) mix using 40mm iss hbg metal from approved quarry including cost and conveyance of all materials and all labour charges for mixing, laying, compacting and curing the concrete and other incidental charges etc., complete.as per standard specification 28 v,vi s25 , supply and fabrication of steel using tmt rodsfor all reinforced cement concreteworks including cost and conveyance of all materials and all labour charges for cutting, bending and placing the rod in position and tying up the rods with binding wire and other incidental charges etc., complete.as per standard specification ss 86 & 86a v,vi, vii (s6) 7,3 , vibrated reinforced cement concrete 1:1.5:3 mix,(one part of cement, one and half part of sand and three part of aggregate) mix using 20mm iss hbg metal from approved quarry including cost and conveyance of all materials and all labour charges for mixing, laying, compacting and curing the concrete and other incidental charges to site etc., complete.as per standard specification 28 v,vi s25 , supply and erection of steel centering, shuttering for soffits and sides including necessary support strutting for all reinforced cement concrete works using ms sheets of suitable size of bg 10 stiffened with ms angle of size 25x25x3mm