Question

(Please be accurate)

1. A concrete to concrete joint made in such a manner that the faces of the new and old concrete adhere sufficiently to prevent any relative movement across the joint; it creates some weakness in the concrete structure so care must be taken to where they are to be placed. These joints are called:

Select one:

a. Metal joint

b. Construction joint

c. Stop joint

2.

Piles may be made from all the following except one:

Select one:

a. Steel

b. Precast concrete

c. Brick

d. Timbe

3.

Reinforcing Steel is placed in the bottom of the footing to:

Select one:

a. Carry compression

b. Reduce shrinkage

c. Carry tension

d. Increase permeability

4.

The process of regularly spraying water or covering the concrete with moisture-retaining materials, or using chemical surface sealer in order to protect the exposed surfaces of newly poured concrete from evaporation and drying is known as:

Select one:

a. Consolidation

b. Hydration

c. Curing

d. Segregation

5.

A mat foundation placed at a depth such that the weight of the soil removed from the excavation is equal to the weight of the building above, so the stress in the soil beneath the building is the same after construction as it was before is known as:

Select one:

a. Pad (Spread) Footings

b. Strip Footings

c. Floating foundation

6.

When steel strands are tensioned before concrete is casted and requires heavy abutments to restrain the strands and is normally only done with concrete in precast plants, but not on the construction site is known as:

Select one:

a. Pre-tensioning

b. Post-tensioning

7.

When the column is located at or near a property line the following shallow foundation is used.

Select one:

a. Caissons

b. Combined footing or cantilever footing

c. Piles

d. Pad footings

Answer 1

Ans 1- . A concrete to concrete joint made in such a manner that the faces of the new and old concrete adhere sufficiently to prevent any relative movement across the joint; it creates some weakness in the concrete structure so care must be taken to where they are to be placed. These joints are called- Construction joint. Option (B) is true.

Ans 2:-Piles may be made from all the following except - Timber, Option (c) is true.

Ans 3:- Reinforcing Steel is placed in the bottom of the footing - To carry tension, Option (C)is true.

Ans 4:- The process of regularly spraying water or covering the concrete with moisture-retaining materials, or using chemical surface sealer in order to protect the exposed surfaces of newly poured concrete from evaporation and drying is known as- Curing, Hence option (C) is true.

Ans 5- A mat foundation placed at a depth such that the weight of the soil removed from the excavation is equal to the weight of the building above, so the stress in the soil beneath the building is the same after construction as it was before is known as- Floating foundation, option (C) is true.

Ans 6:-When steel strands are tensioned before concrete is casted and requires heavy abutments to restrain the strands and is normally only done with concrete in precast plants, but not on the construction site is known as- Pre tensioned, Option (A) is true.

Ans 7:- When the column is located at or near a property line the following shallow foundation is used- Combined footing or cantilever footing, Option (B) is true.

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