Answer Posted / khuram shahzad

mix proportions are

M15 = 1: 2 : 4
M20 = 1: 1.5 : 2
M25 = 1: 1 : 2

Ok lets go to the calculaton part
Now we are going to calculate the quantity of materials required for 1m3 Concrete (M15)

Quantity of Cement required for 1m3

[1/(1+2+4)] * 1.52 = 0.217m3
0.217 * 1440 = 312.48 kg/m3
To calculate in bags
312.48/50 = 6.24 bags/m3
Here 1.52 is the dry co-efficient and 1440 is the unit weignt of cement.

Quantity of Fine aggregate( sand) for 1m3

[2/(1+2+4)] * 1.52 = 0.434m3

Quantity of course aggregate for 1m3

[4/(1+2+4)] * 1.52 = 0.868m3

So this is the Quantity for 1m3. For example, If you want 6m3 concrete of M15 grade

for 6m3
cement = 312.48 * 6 = 1874.88 kg for 6m3 (37.5 bags )
fine aggregate = 0.434 * 6 = 2.604 m3 ( 2.604 m3 sand required for 6m3 concrete )
course aggregate = 0.868 * 6 = 5.208 m3 ( 5.208 m3 aggregate required for 6m3 concrete)

The same procedures should be followed for M20, M25 concrete
For example M20
[1/(1+1.5+2)]* 1.52
For M25
[1/(1+1+2)] * 1.52

questions with answers to face an interview of an civil engineer regarding RCC buidings

2153

---

What is an ice dam sock?

703

---

In jack arch floor, the rise is kept?

708

---

In the roof of a pumping station explain briefly the components of a waterproofing system?

678

---

we have a crushing plant and our product is experiencing flakiness and elongation over limit for granite. what is the solution to this problem? how can it be avoided and what to do differently? It is not ok for batching plants

1765

---

---

specifications of fe500 steel

3041

---

What are the causes of building collapse?

658

---

what will be the total emoluments for deputy surveyor in APPSC in the payband of ( 9460-27600). please give me the detailed information step wise?

1874

---

How to determine thee cut length for steel reinforcement bars in R.C.C design

1059

---

VAT and CST ? Which benefits for buyer ? Why benefits?

1401

---

Design a built-up column carrying an axial load of 1200 KN. Its length is 8m and it is effectively held in position at both ends and restrained against rotation at one end. Assume yield stress of 250 mpa

1747

---

sir I got selected in rail vikas nigam limited and they call for interview but i don't what they will ask in interview please guide me if you have any experience

1934

---

Minimum concrete cover in slabs, columns, beams, foundation and other st?

666

---

Determine the production capacity of a treatment plant for a city of 1,250,000 population. Assume the specific consumption per capita of 15ol/c/d, non-domestic water use of 30,000,000 m³/year, and UFW of 12%.

666

---

How to calculate carrying capacity of the existing water supply trunkmain

1803

---