Target strength = fck +(1.65*4)
What is this 4
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Answer / s r s
Fck- Characterstics Strength of Concrete
4- Standard Deviation for M20 and M25 Grade of Concrete according to IS 456:2000 Page:23
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Answer / sjtbehera
ok fck is the 28 days compressive strength
s is the standard deviation
t is a static value
valu of s is M10 to M20=3.5
M20 to M35=4
M40 to M50=5.o
Is This Answer Correct ? | 3 Yes | 1 No |
RCC colums of 15"X9" each, roof height 10.5'ft, total pillars 12 nons. Span between pillar to pillar is 14/20/20 length wise and 17/14 width wise. Total Slab area 2400 sft and plinth area is 1900 sft. beams are 12"X12". kindly calculate load factor per sqft.
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