tender for construction of 30000 litrs oht pipe line tank at mettu street in maganipattu panchayat , earthwork excavation and dwposition on bank with an initial lead of 10m and lift of 2m in the following classification of soils as directed by board officers.hard stiff clay, block cotton, hard red earth, shales, murram, ordinary gravel, stoney earth and earth mixed with small size boulders for foundation ss 20bist depth , sand filling with clear river sand including watering, consolidation etc.,complete for foundation as directed by bd officers , cement concrete 1:4:8 (one cement four sand and eight aggregates) using 40mm hbgs for levelling course for fooundation including the cost of mixing concrete, ramming, curing etc., complete as directed by board officers. , reinforced cement concrete 1:11/2:3 using 20mm hbg metal excluding cost of reinforcement, centering, shuttering strutting, but including cost of mixing concrete, placing, vibrating with mechanical vibrator, finishing , upto gl , above gl and upto 4.50m height , above 4.50m and upto 7.32m ht from gl , above 7.32m and upto 10.98m ht from gl , above 10.98m and upto 14.64m ht form gl , above 14.64m and upto 18.30m ht form gl , provinding steel centering using ms plates of size 90cmx60cm 13 grade to 10 grade thick welded with 25mmx25mmx3mm ms angles supported with country wood stantling of size 10cmx6.5cm at 90 cm c/c strutting with casurina props of 100m to 13cm dia as directed by board officers.sqare surface , columns above 3.30m upto 4.30m ht from gl , columns above 4.30m upto 5.30m ht from gl , columns above 5.30m upto 6.30m ht from gl , columns above 6.30m upto 7.30m ht from gl , columns above 7.30m upto 8.30m ht from gl , columns above 8.30m upto 9.30m ht from gl , columns above 9.30m upto 10.30m ht from gl , columns above 10.30m upto 11.30m ht from gl , columns above 11.30m upto 11.40m ht from gl , plane surface below g.l , upto 3.30m ht above gl , from 5.30m to 6.30m htabove gl , from 8.30m to 9.30m ht