SPL REPAIR TO BLDG NO A-53 AND A-54 AT SIGNAL UNIT HAPPY VALLEY SHILLONG AND PROVN OF PARKING SHED AT SE FALLS AND ADDN/ALTN OF BLDG NO SP-12 AT CWE SHILLONG UNDER GE SHILLONG

S&F 2nd class HW boarding 20mm thick fixed with nails as in eaves board planed one side with butt joint complete all as specified and as directed.

M&L for water proofing treatment to RCC roof slab, including parapet comprising with the following courses of treatment/specification from bottom to top:- (i) Taking out old roof treatment and roughening the same old concrete slab by picking, sweeping clean and washing down with water to remove dust etc.and applying cement slurry @3kg/Sqm (ii) Screed bed or bedding layer of mortar 1:4 in 15 mm thick for laying as in roof slab with mixing of WPC and surface finished fare and smooth without using extra cement. (Note: WPC shall be measured and paid for under separate items) (iii) Cleaning of plastered roof surface and applying one coat of cold bituminous primer @ 0.25ltr /Sqm conforming to IS:3384-1986. (iv) APP based polymeric membrane 3mm thick (minimum), weighing 3.5 Kg/sqm reinforced with polyester non woven fabric (weighing not less than 160 gms/Sqm) shall be less applied over bituminous primer as specified above over a Application of polymeric membrance shall by torch application. The overlaps shall be minimum 100mm on the transverse direction and 75mm on longitudinal direction. (v) Applying one coat of aluminum paint over the APP modified membrance @ 0.11Kg/sqm.

M&L for 600 mm x 600 mm 4mm thick Non asbestos fibre cement building boards fixed or laid/ inserted to timber/GI/Aluminium framework with nails as in ceiling,including dismantling wall and ceilling boards of any description including cover fillets complete all as specified and directed.

Dismantling timber scantlings in fillets, rails, posts, rafters, purlins, etc. under 40 sq. cm in section of unframed work complete all as specified and as directed.

M&L for Anodised aluminium snap grid frame work for false ceiling complete all as specified and as directed.

M&L for Hangers 6 mm dia. G.I. (upto 1200mm length) adjusting level fixed to roof slabs by means of ceilling cleats made out of G.I. flat 40 x 3 mm size 60mm long and expansion hold fasteners 12.5mm dia. 40mm long complete all as specified and as directed.

Demolition of brick work / Precast cement concrete block walling in any position, built in any mortar complete all as specified and directed.

M&L Precast PCC (1:3:6) type C1 (using 20mm graded agg) solid block masonry exc 10cm in width or girth and setting CM (1:6) complete all as specified and directed.

Taking down cement plaster in cement or cement lime mortar on brick or stone walls etc. including raking out joints, hacking for key, scrubbing down with water etc, Including removal of debries out side MD land complete all specified and directed.

M&L for rendering 10 mm thick on concrete surface in cement mortar (1:6) as backing coat and 5 mm th in CM 1:4 finishing the surface even and smooth without using extra cement, mixed with water proofing compound as per manufacturer's instructions complete all as specified and directed. Note:- WPC shall be measured & Paid separately under respective item of BOQ.