QUESTION 8 1. Rebar is typically placed on the top of the beam since concrete is

Question

QUESTION 8

1. Rebar is typically placed on the top of the beam since concrete is poor in compressive strength.

True

False

QUESTION 9

1. Which cement type is most commonly used for cold weather concrete?

a.Type III

b.Type II

c.Type IV

d.Type I

e.Type V

QUESTION 10

1. A control joint in a concrete slab is/does all of the following except:

a.is a full depth joint which separates the slab from other elements.

b.is a partial depth joint

c.helps to reduce cracking in a disorderly way

d.can be created with special trowel or cut with a special saw blade

QUESTION 11

1. Air-entraining results in all the following except:

a.Bubbles

b.Greater resistance to freeze-thaw

c.Increased strength

d.Improved workability

QUESTION 12

1. Which of the following famous architectural structures does not feature site cast concrete?

a.TWA Terminal at JFK Airport, New York City (Eero Saarinen)

b.Chartres Cathedral, Chartres, France

c.Notre Dame de Haut, Ronchamp, France (Le Corbusier)

d.The Guggenheim Museum, New York City (Frank Lloyd Wright)

QUESTION 13

1. Too much water will result in a higher slump.

True

False

QUESTION 14

1. The purpose of consolidation is to ensure all large aggregates are pushed to the bottom of the formwork.

Yes

No

Explanation / Answer

8) False. Concrete is strong in compression and weak in tension. Hence place in bottom of the beam.

9) Option A is correct. type III cement is used to cold weather concrete.

10) Option a. It is not a full depth joint. It is a partial depth joint which helps in reducing random cracks.

11) Option a is correct. Air entraing results in bubbles in concrete.

12) Option c is correct. Notre Dame de Haut, Ronchamp, France (Le Corbusier) does not feature site cast concrete.

13) False. Too much slump results in lower slump. when water is added concrete will fall down.

14) False. consolidation is compaction of soil or concrete to eliminate water from it.

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