PART I :-
1. Cement’s initial setting time should be 30 min (Minimum) and 90 min (maximum).
2. Final setting time of cement should be=10 hours
3. Type of test should perform for a road's improved subgrade sand filling:
i. FM of fine aggregates
ii. California bearing ratio
iii. Dynamic cone penetration test
iV. MDD of fine aggregate
V. Field Dry Density.
4. Type of test should perform for earth filling in Embankment with specified soil:
i. Plasticity index.
5. Type of test should perform for Concrete Work:
i. Setting time of cement
ii. Compressive strength of cement
iii. Gradation of Coarse aggregates.
iV. FM of fine aggregates.
V. Water absorption of coarse aggregates
Vi. Loss angel’s abrasion test
Vii. Concrete cylinder casting & testing
6. Type of test should perform for M.S High strength deform bar:
i. Tensile strength, Elongation and unit wt.
7. Type of test should be perform for Brick work:
i. Setting time of cement
ii. Compressive strength of cement
iii. FM of fine aggregates
iV. Compressive strength of brick
V. Water absorption of brick
Vi. Efflorescence of brick.
8. Local sand FM limit should be 0.5 to 0.8
9. Toak sand FM limit should be 1.2 to 1.8
10. Coarse sand or shylhet sand FM should be 2.5
11. At improved sub grade 0.5 to 0.8 FM sand should be used.
12. Ms Flat bar weight determine equation=0.00785A
13. Brick require for 1 square meter one brick flat soling=32nos.
14. Brick require for 1 squre meter one layer herring bone bond soling=52nos.
15. Cement require for 9.3 squre meter neat cement finishing=1/2bag or 25kg
16. A head mason can work 25-30 cum brick work in a day.
17. Lintel thicknessshould be 15cm.
18. Parapet wall height should be 1 meter.
19. Window height should be 120cm.
20. D.P.C thickness should be 2.5cm
21. Plinth height should be 45cm.
22. Measurement of riser should be 15cm.
23. Building height should be 315 cm
24. Plaster thickness at ceiling should be 6mm.
PART II :-
1. Riser height of a staircase should be 15 cm
2. A building height should be 315 cm
3. Plaster thickness at celling should be 6 mm
4. Dry volume of a cc work is 3 times greater than wet volume of a cc work.
5.1 cum water weight =1000kg
6. At DPC work how much Cem-seal or Impemo require for one bag cement?
Answer = 1 kg.
7. At DPC work how much Padlo require for one bag cement = 2.5 kg
8. At brick work the joint thickness between two bricks should be = 12 mm
9. The lapping measurement at Compreesion zone should be = 24 D (without hook)
10. The lapping measurement at Tensile zone should be = 40 D (Excluding Hook)
11. One hook length should be = 9 D
12. For crank extra length measurement should be=0.50d
13. Stirrup length measurement Equation=2(A+B)+30 cm
14. Weight of step of a staircase=11.5r (r=rise in cm)
15. MS angle weight determine equation=0.00785A
16. MS plate weight determine equation=7.85t
17. Before use a brick for brick work how many time the brick should take rest underneath the water = 2 hours
18. How much brick require for 1 sqm brick flat soling = 32 nos
19. How much brick require for 1 sqft brick flat soling = 3 nos
20. How much sand require for 1 sqm brick flat soling = 0.02 cum
21. How much brick require for 1 sqm herring bone bond = 54 nos
22. How much brick require for 1 sqft herring bone bond = 5 nos
23. How much sand require for 1sqm herring bone bond = 0.03 cum
24. How much brick require for 1 sqm edging = 8 nos
25. Cement require for 1 sqm neat cement finishing = 3 kg
QUESTION \ ANSWER
Q1: What is the volume of per bag cement?
Answer: 1.25 cubic ft.
Q2: what is the weight of per bag cement?
Answer: 50 kg or 112 pb
Q3: How much water absorb of a brick if the brick take rest for 24 hours in underneath the water?
Answer: 1/5 or 1/6 of the brick wt.
Q4: what is the measurement of a brick?
Answer: 9.5 in* 4.5 in* 2.75 in (without mortar)
Answer: 10in*5in*3 in (with mortar)
Q5: What is the weight of a first class brick?
Answer: 3.85 kg
Q6: What is the crushing strength of a first class brick in per square in?
Answer: not less than 1000 pound.
Q7: What is the tensile strength of a first class brick in per square in?
Answer: not less than 3000 pound.
Q8: Which sand is mostly used for construction in Bangladesh?
Answer: Domar sand or Dimla sand.
Q9. 1 cum cement=how much bag?
Answer: 30 bags.
Q10 1cum khoa =how much brick?
Answer = 300 nos.
Q11:.1bag cement=0.0347 cum cement.
A good civil engineer should know many basics and Topics :-
BUILDING MATERIAL AND CONSTRUCTION
Lab test of Rock, Brick, Cement, Aggregate, Concrete etc
eg.-
sand + Cement = Mortar
Mortar + Coarse aggregate = Concrete
Different Test of Brick
i) Crushing strength test by UTM in lab
Standard result are 10.5N/mm2 (1st class) 7.5(2nd class) 3.5(3rd class)
Stand. Size of brick- 19x19x9
ii) Water absorption test - Not more than 20% Of water by Wt. If immersed in water for 24hr - 1st class
Not more than 22% water- 2nd class & 24% - 3rd class
Many other test of brick- Hardness test, Toughness test.
English, Fleming, stretcher & Header bond of brick masonry.