tender for construction of storm water drain at manthavelli colony,adhidravidar kudiruppu, mettu colony in thakkolam 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. complete. complying with std. specifications.ss 20 b 2 plain cement concrete 1:4:8 mix (one part cement, four part m.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 3 supplying and erecting steel centering including necessary supports for plane surfaces for reinforced cement concrete works such as column footings, column pedestals, plinth beams, grade beams, staircase steps, etc. including cost and conveyance ofall material at site etc., complete complying withstandard specfication. 4 plain cement concrete 1:2:4 mix (one part cement, two part sand and four 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 providing granolithic floor finish of 25mm thickness with plain cement concrete 1:2:4 (one cement, two crushed sand (m-sand) and four aggregate) using 10 to 12mm gauge hard broken stone jelly including laying, finishing and the top rubbed smooth with power trawl, thread lining, curing etc. complete complying with standard specification and as directed by the departmental officers. (the rate is inclusive of necessary planking for panellingwherever necessary and as directed by the departmental officers) 6 supplying and erecting steel centering including necessary supports for plane surfaces for reinforced cement concrete works such as column footings, column pedestals, plinth beams, grade beams, staircase steps, etc. including cost and conveyance ofall material at site etc., complete complying withstandard specfication. 7 supplying, fabricating and placing in position of rts grills for reinforcement including cost of steel and binding wire etc. complete. 8 providing and laying in position standardised concrete mix m-20 grade in accordance with is 456 - 2000 using 20mm and down graded hard broken granite stone jelly for all rcc items of works with minimum cement contenet of 325kg/ cum and maximum water cement ratio of 0.55 including admixture (plasticiser / super plasticiser) in recommended proportions as per is 9103 to accelerate, related setting of concrete, improve workability without imparing strength and durability with about (5.0cum), 7730kg of 20mm machine crushed stone jelly and with about (3.3 cum), 5156kg of 10 - 12mm machine crushed stone jelly and with about (4.79cum) 7670 kg of crushed stone sand (m- sand), but excluding cost of reinforcement grill and fabricating charges centering and shuttering but including laying, vibrating with mechanical vibrators, finishing, curing, etc and providing fixtures like fan clamps in the rcc floor / roof slabs wherever necessary without claiming extra cost etc., complete complying with standard specification and as directed by the departmental officers -