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PT RAFT
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PT RAFT is feasible under following conditions
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If Safe Baring Capacity (SBC) is very low
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If depth of RCC raft is more
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If RCC raft construction is Un-economical
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NON-UNIFORM SBC, HARD ROCK STRATA IN MAJOR PORTION
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HIGH COST OF EXCAVATION TO MAINTAIN UNIFORM LEVEL
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HIGH WATER PRESSURE
FACTORS RESPONSIBLE FOR REDUCTION IN COST
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Reduction of material quantities and cost
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Reduction of labour and material handling costs
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Reduced total building height and cladding cost.
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Simplified and cheaper formwork.
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Reduction in Indirect costs due to faster construction cycle.
ADVANTAGES OF PT RAFT
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Reduction In Raft Depth
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Resistance To Water Pressure
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Saving In Concrete Cost
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Saving In Reinforcement Cost
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Saving In Excavation Cost
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And Support Cost
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