tender for additional work for pipe vented causeway at kilandurai to devathanam road at kilandurai panchayat , construction of granular sub base by providing well graded material (25 mm to 4.75 mm irc hbg metal @ 65 %,4.75 to 2.36mm irc hbg metal @20%&2.36 mm below irc hbg metal @15%)& (the material passing 425 microns sieve shall have liquid limit and plasticity index not more than 25 & 6% repectively) spreading in uniform layers with motor grader on prepared surface mixing by mix in place method with rotovator at omc and compacting with three wheel 80-100 kn capacity and finished in accordance with the requirements of the specification and thickness as per approved plans or as directed by the engineer (mix -in - place method) . , plain cement concrete m30 mix using iss sine hbg metal including cost and conveyace of all materials and all labour charges,etc complete, , reinforced cement concrete 1:1.5:3 mix using 20mm iss metal including cost and conveyance of all materials to site and all labour charges for mixing, laying, and curing etc complete for 10 cum , supplying and errecting centering for sides and soffits including supports and strutting up to 3.20 m height for plane surface in all floors with all cross bracing using mild steel of size 0.90 cm x 60 cm and 10 guage stilfaned welded with mild steel angles of size 25 mm x 25 mm x 3 mm for boarding laid over silver oak (c-word) joint of size 10 cm x 6.50 cm dia spaced about cnter to center and supported by casuarinas propels of 10 cm to 13 cm dia spaced at 75 cm center to center etc., complete complying with std. specification and as directed for the following items , supplying and fabrication of steel including cost and conveyance of steel to site and all labour charges for straightening, cutting to length, bending to shape and tying in position and forming grills for all reinforced cement concrete works , gst amount for providing service to government contract works for the above construction & maintenance w