What should be the maximum allowable time for placing ready mix concrete? The specification requires concrete placement within 90 minutes of batching at the plant. What is the significance of this 90 minutes & should this be used as a rejection criterion? What effects does the concrete has after that time period?

2816

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How to Rectify deep crack formed on Brick Wall? Explain the method of rectify the defect?

7777

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2056

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how do you calculate the quantity of steel,cement for plinth beam. (example size 41'*0.58'*1.08')

2585

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if we use 1.25 bag of cement 3 pharma metal and 2 pharma crush sand what is the strenghtexpected for RCC column

2018

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What is the veriplus for ellips card length formula (major axis 3.4m,minar axis 2.6m spacing 0.2m

2150

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What is the snap size in civil and how can we create it?

2727

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how i convert mm into standard wire guage (SWG)no.

3015

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what r the precaution for high in atp tempareture,low in atp tempareture

1990

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how water proof chemicals act in concrete to avoid leek?

2192

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what is diffrence between catchment area,watershed and basin?

2923

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Used Cement & Sand in 1 Square Meter or 1 Square Feet For Brick Work 0.115mm ? (1:4) (1:6)

2397

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why we use aggregate,sand with cement in concrete?

9674

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What is Grid floor and mention its advantages ?

3205

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contractor receive 100 MT steel.after compliting the work the contractor refund 90 MT steel.How reconsilation of steel done?

2287

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