Lime conc in roof terracing
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This document provides specifications for lime concrete used in roof terracing. It outlines the materials used including course aggregate, fine aggregate, and lime. It specifies the proportions of lime, sand, and brick ballast used. The concrete is laid in layers and consolidated by ramming and beating over 7 days while sprinkling a lime, gur, and bael fruit solution for waterproofing. The finished surface is smoothed with this solution and sloped between 1:50 to 1:36 toward outlets. It is kept wet for 10 days during curing.
Lime conc in roof terracing
- 1. ESTIMATION AND COSTING LIME CONC IN ROOF TERACING
- 2. MATERIALS COURSE AGGREGATE FINE AGGREGATE LIME
- 3. COURSE AGGREGATE COURSE AGGREGATE SHALL BE WELL BURNT IT CAN BURNT BRICK BALLAST OF 25 MM GAUGE POROUS BALLAST SHALL NOT BE USED IT SHALL PASS THROUGH 37.5CM SQUARE MESH
- 4. FINE AGGREGATE IT MAY BE SAND, SURKHI OR CINDER SAND SHALL BE CLEAN, COARSE AND FREE FROM SILT, CLAY AND OTHER FOREIGN MATTERS. SURKHI IS USED WHEN PURE, CLEAN COARSE SAND IS NOT AVAILABLE SURKHI USED SHALL BE FREE FROM DUST, DIRT
- 5. LIME LIME USED SHALL BE FRESHLY BURNT WHITE FAT LIME LIME USED SHALL BE FREE FROM ASHES AND OTHER IMPURITIES LIME SHALL BE SLAKED AT SITE OF WORK
- 6. PROPORTION OF CONCRETE SHALL BE 18:36:100 BY VOLUME. 18 BEING LIME, 36 SAND AND 100 BRICK BALLAST MIXING SHALL BE SIMILAR TO LIME CONC. IN FOUNDATION.
- 7. LAYING AND CONSOLIDATION ROOF WHICH MAY BE MADE OF RCC MAY BE LIGHTLY SPRINKLED WITH WATER AND CONC. SHALL BE LAID IN LAYERS SO AS TO OBTAIN REQUIRED SLOPE CONC. SHALL BE LIGHTLY RAMMED AND THEN PERFECTLY LEVELLED CONC. IS KEPT FURTHER CONSOLIDATED BY BEATING WITH WOODEN THAPIES FOR ABOUT 7 DAYS DURING BEATING CONC. IT SHALL BE SPRINKLED WITH A SOLUTION OF LIME, GUR AND SOL. OF BAEL FRUIT FOR WATER PROOFING.
- 8. FINISHING AFTER BEATING A SOLUTION OF LIME, GUR AND SOL. OF BAEL FRUIT IS SPREAD ON THE SURFACE AND SMOOTHENED PLASTER IS NOT USED FOR THE FINISHING OF SUFACE SLOPE OF FINISHED SURFACE SHALL BE VARYING FROM 1:50 TO 1:36 TOWARD RAIN WATER OUTLET
- 9. CURING FINISHED SURFACE SHALL BE KEPT WET FOR ABOUT 10 DAYS THE MEASUREMENTS ARE TAKEN FOR AREA OF FINISHED WORK IN SQ-M LENGTH-BREADTH SHALL BE MEASURED UPTO THE ACCURACY OF 1CM AND AVERAGE THICKNESS UPTO 6MM NO DEDUCTION IS MADE FOR OPENING UPTO .4 SQ-M AND NEITHER EXTRA PAYMENT IS MADE FOR FORMING SUCH OPENING SURFACE FINISHING SHALL BE TAKEN AS SEPARATE ITEM AND SHALL BE MEASURED IN SQ-M.
- 10. NOTE: IF INSTEAD OF FAT LIME KANKAR LIME IS TO BE USED THEN SAND OR SURKHI IS NOT USED AND PROPORTION OF KANKAR LIME TO BRICK BALLAST SHALL BE 45:100 IF INSTEAD OF BRICK BALLAST, STONE BALLAST OF 25MM GAUGE IS USED THEN PROPORTION OF LIME. SAND AND STONE BALLAST BE 1:2:4 i.e. 25 CU-M, OF LIME TO 50 CU-M OF SAND TO 10 CU-M OF STONE BALLAST