Method of findingthe dry ingredient quantity of 1 m3
concrete.
Answer Posted / b.subhash
Estimating Quantities of material needed.
1. Calculate the volume of concrete needed.
2. Estimate the total volume of dry material by
multiplying the required volume of concrete by 1.65 to get
the total volume of dry loose material needed (this includes
10% extra to compensate for losses).
3. Add the numbers in the volumetric proportion that you
will use to get a relative total. This will allow you later
to compute fractions of the total needed for each
ingredient. (i.e. 1:2:4 = 7).
4. Determine the required volume of cement, sand and
gravel by multiplying the total volume of dry material (Step
2) by each components fraction of the total mix volume (Step
3) i.e. the total amount cement needed = volume of dry
materials * 1/7.
5. Calculate the number of bags of concrete by dividing
the required volume of cement by the unit volume per bag of
cement (0.0332 m3 per 50 kg bag of cement or 1 ft3 per 94 lb
bag).
For example, for a 2 m x 2 m x 10 cm thick pump pad:
1. Required volume of concrete = 0.40 m3
2. Estimated volume of dry material = 0.4 x 1.65 = 0.66 m3
3. Mix totals = 1+2+4 = 7 (1:2:4 cement:sand:gravel)
4. Ingredient Volumes: 0.66 x 1/7 = .094 m3 cement
0.66 x 2/7 = .188 m3 sand
0.66 x 4/7 = .378 m3 gravel
5. # Bags of cement: 0.094 m3 cement / .0332 m3 per 50 Kg bag
= 2.83 bags of cement (use three bags)
| Is This Answer Correct ? | 158 Yes | 44 No |
Post New Answer View All Answers
How many Rod required for 58 feet by 24 feet roof slab which is supported by 5 * 3 = 15 Column. Six Stored building Roof Slab = ? Ton 15 Column = ? Ton Slab Beam = ? Ton
B.M DIAGRAMS & S.F DIAGRAMS OF CONTINOUS BEAMS
The largest size of paper used in plotter to print the drawing made by Autocad .
Kindly post me previous year interview questions with answer for post of DY. Manager (civil engg.) for GAIL, NTPC, IOC, OIL and ONGC etc.
Why is the statue of liberty made of copper?
what is the proper procedure in conducting a california bearing ratio penetration test on soil on cbr machine?
What is the diameter of the 3"inch nails?
what is castigliano theaorem
HOW MANY BAGS OF CEMEMT USED IN PER M2 OF PARTITION WALL
What is the distance between railway tracks?
GIVE US DETAIL OF YOUR PRESENT EMPLOYMENT STATUS?
what is flexible and rigid footing?
Why joints are provided?
What is the difference between undo & redo?
Explain major differences between routing maintenance and major maintenance.