SPL REPAIR TO BLDG NO P-72 AT RLT VIHAR AND PROVN OF HOT AND COLD WATER COOLER FOR MH UNDER GE (N) AKHNOOR

Demolition / taking down of existing old tarfelt , water proofing membrane, water proofing plaster of any description and of any type over RCC roof including roof tiles, cement mortar screed of any thickness including making good the surface to receive new screed and removal of debris outside the MoD land complete all as specified and as directed.

15mm thick plaster on roof / concrete surfaces incl parapet etc in cement mortar 1:3 and finished even and smooth without using extra cement and mixed with waterproofing compound as per manufacturers instructions. (Note. WPC shall be measured and paid separately).

Supply only liquid water proofing admixture conforming to IS 2645-1975 of approved make complete all as specified and directed.(Dosage- @ 200ml per 50Kgs of Bags of cement)

Roof treatment :- Water proofing treatment to RCC roof slab including parapet as under :- (a) Ist Course : Apply a coat of bituminous primer conforming to IS-3384@ 0.40 Kg /Sqm on prepared surface of plaster and after drying of primer, apply a coat of hot blown 85/25 grade bitumen conforming to IS-702 @ 1.2 Kg/sqm on plastered surfaces. (b) 2nd Course : APP (Atactic Polypropylene) modified polymeric membrane, 5 layered, 3 mm thick weight not less than 3.0 Kg/Sqm with 150 Grams/Sqm non woven polyester made at centre core reinforced laid with 75 mm side overlap and 150 mm end overlap, membrane has to be laid with LPG torch and overlap sealed and finished neat, all joints. (c) 3rd Course : Apply a coat of hot blown 85/25 grade bitumen confirming to IS-702 @ 1.2 Kg/sqm over membrane and dusted with dry sand @ 0.50 to 1 Kg/sqm. (i) On Non-accesible roof : After providing (a) to (c) provide aluminium paint as per manufacturer instructions. (ii) Coved fillet in PCC 1:2:4 type B0 (using 12.5 mm graded crushed stone aggregate) of required radius 75mm shall be provided at the junction of roof and vertical surface such as parapet wall/mumty after all laid 250mmx250mmx25mm thick PCC tile over 15mm screed complete all as directed Note : (i) Roof treatment work shall be carried out through approved manufacturers only or through their authorised personal only.

PCC 1:2:4 type B-1 (using 20mm graded crushed stone aggregate) as in roof kerb, padding , finished surface even and fair, complete all as specified and directed.

Sunken Floor treatment :- Providing and laying of water proofing treatment to sunken portion including vertical portion by applying cement slurry mixed with acrylic based polymer modified cementitious composite compound of make as specified and approved including demolition and filling of sunken floor with & including PCC 1:5:10 type E-2 (using 40mm brick aggregate). (a) First layer of slurry of cement @0.488 Kg/Sqm mixed with acrylic based polymer modified cementitious composite compound @ 0.253 Kg/Sqm. This layer allowed to air cure for 4 Hours. (b) Second layer of slurry of cement @0.242 kg/Sqm mixed with acrylic based polymer modified cementitious composite compound @ 0.125 Kg/Sqm. This layer allowed to air cure for 4 Hours. (c) 15mm thick plaster in CM 1:3 mixed with WP compound to be provided while concrete is still green. (d) Joint of/Trap/WC/Soil pipes shall be properly sealed with sealing compound. Note:(a) Concrete for sunken slabs shall be mixed with WP compounds as per manufacturer's instructions. Before carrying out water proofing treatment the sunken slab shall be tested with water for 48 hours for any leakage /dampness is seen in ceiling below, then treatment is again carried out to RCC slab and it is again tested before passing for next stage. (The rate quoted includes water proofing compound as per manufacturers instructions). (b) Please note that only floor area shall be measured for payment purpose.

Demolition of brick work or stone boulder masonary built in cement mortar including all quoins, arches, pillars etc but excluding ashlar facings, dressed stonework, precast concrete articles, complete all as specified and as directed.

Brick work with sub class ‘B’ bricks straight or curved on plan exceeding 6m mean radius built in cement mortar 1:6, complete all as specified and directed.

Brick work with sub class B brick straight or curved on plan to any radius in half brick thick built in CM 1:4 complete all as specified and directed.

Taking down cement plaster from brick or stone walls etc incl racking out joints hacking for key, scrubbing down with water etc receive new plaster etc all as specified and directed.