Bharat Sanchar Nigam Limited Tender

Filling available excavated earth (excluding rock) in trenches, plinth, sides of foundations etc. in layers not exceeding 20cm in depth, consolidating each deposited layer by ramming and watering, lead up to 50 m and lift up to 1.5 m.

Setting pieces of PVC pipes of nominal dia 110 mm in reinforcement mesh of RC cable chamber wall spanning fully across two walls of the chamber, including providing and tying to existing reinforcement around the pipes diagonal additional rebars of 12 mm dia forming extended squares. The pipe pieces shall aligned to match the entry direction of HDD drawn cables. Rate worked out for one chamber for fixing 4 such pipe pieces in staggered fashion across 2 cross walls on the chamber of wall thickness 0.25 m and depth 1.20 m, as per layout given by Engineer-in-Charge.

Supplying Precast RCC cover slabs for Access Chambers as per the following sequence of work:-a) Supplying and fixing structural steel frame work with ISMC 150 channel section to form the outer framework of RCC slab. The sections shall be joined by forming 45 degree mitered continous weld; b) Casting the RCC cover slab with mix 1:1:2 ( 1 Cement : 1 coarse sand : 2 graded stone aggregate 20 mm nominal size) with steel fibres of dia less than 0.75 mm and length about 50 mm, mixed @ about 0.3 % of concrete by volume-The cover slab shall be casted on metal sheet / plywood sheet as base formwork; c) Providing reinforcement for cover slab using 12 mm dia Fe 500D-TMT bars @ 75 mm centre to centre both ways , including cutting, welding, fixing in position etc. complete; d) Curing the slab for at least 14 days by immersion curing in water tank. The slab shall be cast in CTO Compound, Ernakulam and it shall be shifted and stacked suitably at secure location within the same compound, decided in consulation with the Engineer in Charge and TE authorities. The rate includes cost of all materials like steel frame work, concrete, reinforcement, all labour charges, form work and hauling, transportation, unloading and laying at site within 10 km of place of casting.. Access chamber cover having size 1 m x 0.50 m x 0.15 mtr ( excluding plastering / finishing)