NNT 2025-26

Earthwork excavation in all soils and sub soils except hard rock requiring blasting with initial lead and lift including re-filling the sides of foundation in layer of 15 cm thick watering , ramming ,depositing the surplus earth in the premises as directed by departmental officers etc., complete as per SS 20 B TNDSS NO: 23&24VI (S2), VII 9,10

Plain cement concrete Using 1:4:8 mix ( One cement , four Sand and Eight aggregates) using 40 mm ISS HBG metal including cost and conveyance of all materials to work site and all labour charges for mixing, laying,consolidating and curing etc complete as per the standard specifications. TNDSS NO: 28 V, VI (S2) V,VI (S5A) VII

Supplying and erecting steel centering for sides and soffits including supports and strutting upto 3.29 m height for plain surface as RCC slabs, rectangular tee (or) elbeams, lintel, bed block stair case waist slab, landing slab, etc., complete as per standard specification - 10m2 as per TNDSS & Morth specification No:30 & 36

shuttering

centering

Cement Concrete of mix (1:3:6) using 60% of hard broken stone aggregate of maximum nominal size of 40 millimetre and down grade of 40% of hard broken stone aggregate of maximum nominal size of 20 millimetre I.S. specified grading, mixing by mixer machine including dewatering the placement site, laying the concrete in layers and in bays, vibrating compacting and finishing the surface with all leads and lifts, watering, curing complete to attain the profile and strength as specified in the drawings and specifications for various depth and height above and below ground level complete as directed by the Engineer complying with specification.

Reinforced cement concrete 1:11/2:3 (one cement one and half sand and three aggregate) using 20mm size I.S.S. metal including cost conveyance of materials to site and all labour charges etc., mixing laying consolidating curring etc., but excluding cost of steel etc., complete as per standard specification as per TNDSS NO: 30 V,VI (S3) VII-3

Supplying, fabricating and placing in position of mild steel or TMT rods, including cost of steel and binding wire and all labour charges for cutting, bending, tying and placing in position etc, complete as per SS. TNDSS NO: 97 V,VI (S6) VII (S6) VII-3

Supplying and fixing in position CI manhole covers with CI frames (Heavy duty) of size 60cm x 60cm of best approved quality as per standard specification etc., complete compying with standard specifications

Plastering in cement mortar 1:5 (one cement, five sand) using 12mm thick including cost and conveyance of all materials and labour charges etc, complete as per standard specification. TNDSS NO: 61 V,VI (S4)