tender for improvement of retaining wall to moopar oorani ( s.f. no-44) in t.kallupatti town panchayat; 1 retaining wall 2 supplying and erecting centering to sides and soffits including supports and strutting with necessary cross bracing for plain surface such as rcc slabs rectangular beams all beams lintels etc., centering for soffits upto 3 meter height using mild steel sheet of size 90 cm x 60 cm x 10 mm gauge with ms angles of size 25mm x 25mm x 3mm laid over silver oak (cw) joists of size 10cm x 6cm spaced upto 90cm c/c and casurina props or 10 cm to 13 cm dia spaced at 0.750 cm c/c complying with standard specifications as per tndss no : 30 & 86. 3 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.