Which of the following type of foundation is used for construction of building on black cotton soil?
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16%
Grillage foundation
11%
Inverted Arch foundation
13%
Floating foundation
60%
Mat foundation
How many days does concrete takes to achieve almost full strength?
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2%
7 days
9%
14 days
5%
21 days
84%
28 days
Convert 1 Cubic Meter to 1 Cubic Feet
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17%
35.3347
26%
35.3247
46%
35.3147
12%
35.3047
Largest Hydroelectric Dam in the world
Anonymous Quiz
19%
Baihetan Dam
58%
Three Gorges Dam
13%
Itaipu Dam
11%
Tarbela Dam
1. What is column lapping?
Overlapping two reinforcement bars to transfer load safely when full-length bars are not available.
2. Why is lapping provided?
To maintain continuity of reinforcement and ensure proper load transfer.
3. Standard lap length?
Generally 40d to 50d (d = bar diameter). Example: 16mm → 640 mm.
4. Where should lapping be done?
In the middle portion of the column height, not at joints.
5. Why avoid joints?
Because joints have high stress, leading to possible failure.
6. How many bars lapped at one section?
Maximum 50% of bars; others should be staggered.
7. What is staggered lapping?
Lapping bars at different levels to maintain strength.
8. Minimum distance between laps?
At least 1.3 x lap length.
9. Lapping vs Welding?
Lapping = overlap method; Welding = heat joining.
10. When Use welding?
For large diameter bars (>36mm) or heavy structures.
11. What is development length?
Length required to develop full strength of the bar in concrete.
12. Relation of lap length & development length?
Lap length is generally equal to development length.
Important Salignment
Use proper binding wire
Maintain clear cover
Avoid steel congestion
Check bar alignment
Overlapping two reinforcement bars to transfer load safely when full-length bars are not available.
2. Why is lapping provided?
To maintain continuity of reinforcement and ensure proper load transfer.
3. Standard lap length?
Generally 40d to 50d (d = bar diameter). Example: 16mm → 640 mm.
4. Where should lapping be done?
In the middle portion of the column height, not at joints.
5. Why avoid joints?
Because joints have high stress, leading to possible failure.
6. How many bars lapped at one section?
Maximum 50% of bars; others should be staggered.
7. What is staggered lapping?
Lapping bars at different levels to maintain strength.
8. Minimum distance between laps?
At least 1.3 x lap length.
9. Lapping vs Welding?
Lapping = overlap method; Welding = heat joining.
10. When Use welding?
For large diameter bars (>36mm) or heavy structures.
11. What is development length?
Length required to develop full strength of the bar in concrete.
12. Relation of lap length & development length?
Lap length is generally equal to development length.
Important Salignment
Use proper binding wire
Maintain clear cover
Avoid steel congestion
Check bar alignment
What is the unit of measurement used for Expansion Joint Work in Concrete?
Anonymous Quiz
25%
Cubic meter
28%
Meter square
4%
Kg
42%
Meter
Which Item of work is not included in the Plinth Area Estimate?
Anonymous Quiz
20%
Wall thickness
12%
Room area
13%
WC area
55%
Court yard area
Minimum curing period for Mineral and Admixture added Cement in hot or dry weather
Anonymous Quiz
34%
7 days
26%
10 days
32%
14 days
8%
21 days
Dog Legged Stairs are
Anonymous Quiz
17%
Quarter Turn Stairs
29%
Three Quarter Turn Stairs
50%
Half Turn Stairs
4%
Straight Stairs
Water Table Effect on Soil Bearing Capacity: Complete Guide for Safe Foundation Design https://learningtechnologyofficial.com/water-table-effect-on-soil-bearing-capacity/
Learning Technology
Water Table Effect on Soil Bearing Capacity: Complete Guide for Safe Foundation Design - Construction Encyclopedia
Understand water table effect on soil bearing capacity, its impact on foundation design, and how groundwater affects building stability.