Invoice

From:

1st Floor, Noor Square, Opp. Askari Park, Old Sabzi Mandi, Karachi

Invoice Number INV-0108
Invoice Date February 24, 2023
Total Due Rs. 1,280,150.00
To:
Karachi Grammar School

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Water-Proofing of Main Building Roof MIDDLE SECTION

Hrs/Qty Service Rate/PriceAdjustSub Total
4875 Sqf Cutting Chiseling & Removing

Providing and laying floor on existing tiles with Ratio Avg 1:2:4 on roof with smooth finish
(maintaining the slope) just for making the surface good for water proofing as directed by school management.

Rs. 110.000.00%Rs. 536,250.00
20 Nos Removing of Existing rain water spout including cutting of concrete of surrounding are & shifing of debris through truck. Fixing of 4" dia Pipe (PVC Steelex Pipe) of approved quality of approx. lenth 2ft with concrete of surrounding area complete in all aspects as directed engineer in charge.
Rs. 2,500.000.00%Rs. 50,000.00
850 Rft Cant Strip (Cement Concrete Chamfered Edge - Gola)

Providing and making cant strip (cement concrete Chamfered edge gola) approx. 0'-6" to 0'- 8" chamfered with Ratio Avg 1:2:4 on edges of parapet wall, inverted beam floor and wall junction around roof and around rain water spouts as per site requirement with smooth trovel finish as directed by school management complete.

Rs. 150.000.00%Rs. 127,500.00
7 nos Repairing and Plastering on inverted beam with SBR

Providing and applying of Plaster , (1/2",3/4" ) thick upto required depth , on inverted beam of size
3'x30' using 1:4 cement sand ratio on inverted beam including application of anti rusting chemical on exposed steel ,expanded metal (mesh) at junction wherever else required, with SBR as per standard ratio by 1 part of SBR : 1 part of water :4 parts of Cement (by Volume ) with smooth finish , curing etc as directed by school management.

Rs. 11,700.000.00%Rs. 81,900.00
7050 Sqf providing and applaying water treatment on roof upto height of 3" on parapet wall and inverted beam .all the junctions on the roof to be treated compulsory . Bituminous Coating flexible cementitious water proofing coat along with sandwich layer of canvas cloths . (5 year Warranty)

Cleaning of roof
Prime Coat with bitumen
Laying of cotton cloth
2 float coats of 80/100 & 10/20 bitumen mixture
Spreading of P gravels on top.
Guaranty 5 Years.

Rs. 90.000.00%Rs. 634,500.00
Sub Total Rs. 1,430,150.00
Tax Rs. 0.00
Discount -Rs. 150,000.00
Total Due Rs. 1,280,150.00