I Have concrete mix with 440kg opc and having 37 mpa strengh in 7days while in 28 days only 42mpa can anybody tell me the reason for the same.

4 Answers  

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12mm diameter iron bar having 1m length how much kg weighted ?

6 Answers  

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how to calculate the steel in 500yard

0 Answers   Reliance,

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how much cement is contained in 1:5 ratio 4" brickwork for 1 sqft

1 Answers   C&C, Gammon,

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what affect on the structure and related beam of slab when provide one way slab insteade of two way slab

2 Answers  

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what grades of reinforcement steel are available in market

4 Answers  

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appsc AEE'S interview questions wanted

3 Answers   APPSC,

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How does a traffic light signal work ?

0 Answers   KCP,

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how much shuttering oil required for 100 sqm shuttering?

1 Answers   L&T, NCC,

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what is ment by water cement ratio

2 Answers   CSIR, GIPL, Madhucon, NBCC, TCS,

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HOW TO CALCULATE REINFORCMENT IN STAIRCASE CRANKED BEAM

1 Answers   CCCL, L&T,

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Respected Sir, I am from a hilly place called Darjeeling ,I have constructed house of 9 column out of which 4 of the column is under water , i have put rcc slab on top and on top of the rcc slab i have construced two room house with bricks and light roof , now i am planning to change the light roof with rcc slab for the two room, my main concern is will the column under water will hold the load of the new rcc slab coz it already 10 to 12 yrs old , i dont know what to do , can u advice me regarding this matter, weather to leave the upper floor roof light or make it rcc slab.(If i put the slab , it will require 45bags of cement and u calculate how much of steel and sand and pebbles) thanks with regard Anand

2 Answers  

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