tender for construction storm water drain at ward no : 9 in nangavalli town panchayat; 1 earth work excavation for foundation and depositing on bank with in the initial lead of 10m and a lift of 2m in hard stiff clay, stiff block cotton, hard red earth, shales, murram, gravel, stoney earth and earth mixed with small size boulders etc.,as per ss 20 a. tndss no: 23 & 24 vi (s2) vi,vii 9,10with standard specifications. 2 plain cement concrete 1:4:8 mix (one part cement, four part sand and eight part of aggrigate) using 40 mm size iss hbg metal from approved quarry including cost and conveyance of all materials to site. loading and unloading charges and labour charges for mixing. laying and curing etc. complete. complying with standard specifications as per tndss no. 28 v, vi (s2)(s5a) vii 3 supplying and errecting centering to sides and soffits including supports and struttingfor drainage sides andculvert body wall sidesusing m.s sheets of size90cm x 60cm and b.g 10stifenedwith welded mild steel angles of size 25mm x 25mm x 3mm for boardinglaid over( silver oak joists ) of size 10cm x 6.50cm spread at about 90cm including all labour charges and cost and conveyance of all materials to site etc. complete complying with standard specification as per tndss no.90(s3),86,86a,v,vi,(s3),vii 4 plain cement concrete 1:2:4 mix (one part cement, three part crushed stone sandand six part of aggrigate) using 20mm size iss hbg metal machine crushed from approved quarry including cost and conveyance of all materials to site, loading and unloading charges and labour charges for mixing, laying and curing etc., complete as per tndss no: 28 & vi (s2) vi (s5a) vii standard specifications as directed by engineer incharge. 5 finishing the top of flooring with granothatic flooring with cement concrete 1:2:4 (one cement, two sand and four aggrigate) using 10 to 12mm stone chips – 25mm tk etc., complete.