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# Most Essential Info for Civil Engineers

In this post, brief description is offered on several subjects, such as steel mass for every meter, set conversion aspects, grade of concrete and specific weight of engineering materials.

The info is quite helpful for civil engineers.

Steel weight for every meter:

1. The weight is 0.222 kg for 6 mm steel
2. The weight is 0.395 kg for 8 mm steel
3. The weight is 0.616 kg for 10 mm steel
4. The weight is 0.888 kg for 12 mm steel
5. The weight is 1.578 kg for 16 mm steel
6. The weight is 2.466 kg for 20 mm steel
7. The weight is 3.853 kg for 25 mm steel
8. The weight is 6.313 kg for 32 mm steel
9. The weight is 9.865 kg for 40 mm steel

The unit of steel is calculated by using the subsequent formula: D2/162

Standard Conversion Aspects:

1. One inch = 25.4 mm
2. One yard = 0.9144 m
3. One feet = 0.3048 m
4. One meter = 3.28084 foot
5. One Newton = 0.10 kg
6. One mile = 1.6093 km
7. One mm = 0.0394 inch

In accordance with construction standards, the subsequent ratios must be kept for various categories of concrete grades.

1. The ratio must be 1:4:8 [Cement: Sand: Aggregate] for M5 concrete grades
2. The ratio must be 1:3:6 [Cement: Sand: Aggregate] for M10 concrete grades
3. The ratio must be 1:2:4 [Cement: Sand: Aggregate] for M15 concrete grades
4. The ratio must be 1:1.5:3 [Cement: Sand: Aggregate] for M20 concrete grades
5. The ratio must be 1:1:2 [Cement: Sand: Aggregate] for M25 concrete grades
6. Herein, M indicates Mix and M15 indicates the concrete strength obtained subsequent to 28 days like 15 N/mm2

Engineering materials weight:

1. Bitumen equal to 1340 kg/m3
2. Cement equal to 1440 kg/m3
3. Cast Iron equal to 7650 kg/m3
4. Steel equal to 7850 kg/m3
5. Ice equal to 913 kg/m3
6. Petrol equal to 690 kg/m3
7. Water equal to 1000 kg/m3