Working Estimate for 318 TNGRHS Flats (South Zone) at Kajamalai Colony, Trichy under the Annual Maintenance of TNGRHS

Amount

Maintenance

Construction of Inspection chamber of size 60 x 60 x 60 cm with brick jelly concrete 1:8:16 (One of cement eight of sand and sixteen of hard broken jelly) using 40mm guage broken jelly 15cm thick for foundation and 23cm thick brick masonary in C.M.1:5 (One of cement and five of sand) using II nd class ground moulded chamber burnt bricks of size 9" x 4-3/8" x 2-3/4" plastering with cement mortar 1:3 (One of cement and three of Psand) 12mm thick on both sides top and bottom including earthwork excavation. Supply and fixing of RCC 1:2:4 (One of cement two of sand and four of 20mm gauge hard broken stone) cover slab of size 60cm x 60cm including benching charnelling fixing cover slab in position curing finishing etc., complete in all respects complying with relevant standard specifications and as directed by the Departmental officers.

Supplying and fixing 15amps 3 pin flush type socket on a suitable MS box 16g thick concealed and covered with 3 mm thick laminated hylem sheet inclusive of all connections and cost of all materials all complete, complying with relevant standard specifications & as directed by the departmental officers.

Wiring with 2 x 1.5 sqmm copper P.V.C. insulated unsheathed single core Multi Strand Fire Retardant 1.1 KV grade copper cable with ISI Mark conforming to IS:694/1990 and with continuous earth by means of 1.5 sqmm copper PVC insulated unsheathed single core Multi Strand Fire Retardant 1.1 KV grade copper cable with ISI Mark conforming to IS:694/1990 in fully concealed PVC rigid conduit pipe heavy duty with ISI mark with suitable size MS box of 16 gauge thick concealed and covered with 3mm thick laminated hylem sheet for 5 amps 5 pin plug socket point at Switch Board Itself including circuit mains, cost of all materials, specials, etc., all complete complying with relevant standard specifications & as directed by the departmental officers.

Chipping the external plastering to ceiling whereas required by using chipping machine to the full thickness without making damages to the concretre, identify the cracks from the concrete to treat seperately by stretching and prepare the cement mortar1:3, 10mm thick added with water proofing admixture (1 lit/m2) applying the same over the chipped area and finishing it neately and curing as directed by the departmental officers.

Special Ceiling plastering Removing the all scaled/loosed concrete or morter or reinforced structure remove all one dust by wine brush mixing the morter latex coating with cement morter 1:1/2 ratio etc., all complete and as directed by the departmental officers.

Plastering in C.M 1:3 (one of cement and three of Psand) 10mm thick for bottom of sunshade, ceiling in all floors, including scaffolding, curing ,finishing etc complete in all respects complying with relevant standard specification and as directed by the departmental officers.

White washing two coats using clean shell lime slaked including cost of lime, gum, blue, brushes, including scaffolding etc., complete in all respects. In all floors complying with relevant standard specifications & as directed by the departmental officers.

Supplying, laying, fixing and jointing the following PVC pipes as per ASTM D – 1785 of schedule 40 of wall thickness not less than the specified in IS 4985 suitable for plumbing by threading of wall thickness including the cost of suitable PVC/GI specials like Elbow, Tee reducers, Plug , union, bend, coupler, nipple etc., wherever required above ground level including the cost of Teflon tape, special clamps, GI Bolts and Nuts, nails, etc., fixing on wall to the proper gradient and alignment and redoing the chipped masonry after the pipes are laid etc., complying with relevant standard specifications & as directed by the departmental officers.

ASTM-D Schedule-40 Threaded PVC Pipe with necessary PVC / GI Specials - 25mm dia.

Sub Total

GST at 18%

M.Mohamed Hussain