What are the white crystal-like substances that appear on my retaining wall after it rains?

What are the white crystal-like substances that appear on my retaining wall after it rains?
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1 Answer

Answer :

I believe this is lime or some other soluble mineral leaching through. It’s probably nothing to worry about, if that’s the case. If it’s some kind of mildew, then that might be worth getting a treatment or sealant.
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The wall constructed for the stability of an excavated portion of a road on the hill side, is known as (A) Retaining wall (B) Breast wall (C) Parapet wall (D) All the above

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The walls which are necessary on the hill side of roadway where earth has to be retained from slipping is known as (A) Retaining wall (B) Breast wall (C) Parapet wall (D) None of the above

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The dock wall is designed as a gravity retaining wall and is tested for (A) Back fill pressure when the dock is empty (B) Maximum water pressure from the dock without any back fill (C) The load charge transmitted to the dock by the movement of loaded vehicles or trains on the way (D) All of the abov

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Pick up the correct statement from the following: (A) The breakwater which can be used as a platform for loading and unloading of cargo is called a mole (B) The brick masonry retaining wall which is used for loading and unloading of cargo is called quay wall (C) Three types of break waters are generally provided in harbours (D) All of the above

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The main reinforcement in the toe of a T-shaped R C. retaining wall is provided on (i) Top face parallel to the wall (ii) Top face perpendicular to the wall (iii) Bottom face parallel to the wall (iv) Bottom face perpendicular to the wall The correct answer is (A) Only (ii) is correct (B) (i) and (ii) are correct (C) (iii) and (iv) are correct (D) Only (iv) is correct

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The main reinforcement in the heel of a T-shaped R.C. retaining wall is provided on (A) Top face perpendicular to wall (B) Bottom face perpendicular to wall (C) Both top and bottom faces perpendicular to wall (D) None of these

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Last Answer : Answer: Option A

In the design of a front counterfort in a counterfort retaining wall, the main reinforcement is provided on (i) Bottom face near counterfort (ii) Top face near counterfort (iii) Bottom face near centre of span (iv) Top face near centre of span The correct answer is (A) Only (i) (B) Only (ii) (C) Both (i) and (iv) (D) Both (ii) and (iii)

Description : In the design of a front counterfort in a counterfort retaining wall, the main reinforcement is provided on (i) Bottom face near counterfort (ii) Top face near counterfort (iii) Bottom face near centre of span (iv) Top ... ) (B) Only (ii) (C) Both (i) and (iv) (D) Both (ii) and (iii)

Last Answer : Answer: Option C

Which of the following R.C. retaining walls is suitable for heights beyond 6 m? (A) L-shaped wall (B) T-shaped wall (C) Counterfort type (D) All of the above

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Last Answer : Answer: Option C

In a counterfort retaining wall, the main reinforcement in the stem at mid span is provided on (A) Front face only (B) Inner face only (C) Both front face and inner face (D) None of the above

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Last Answer : Answer: Option A

In a counterfort retaining wall, the main reinforcement is provided on the (i) Bottom face in front counterfort (ii) Inclined face in front counterfort (iii) Bottom face in back counterfort (iv) Inclined face in back counterfort The correct answer is (A) (i) and (ii), (B) (ii) and (iii) (C) (i) and (iv) (D) (iii) and (iv)

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Last Answer : Answer: Option C

The temperature reinforcement in the vertical slab of a T-shaped R.C. retaining wall is (A) Not needed (B) Provided equally on inner and front faces (C) Provided more on inner face than on front face (D) Provided more on front face than on inner face

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Last Answer : Answer: Option D

The stepped structure provided for lateral support of a structure, is (A) Retaining wall (B) Breast wall (C) Buttress (D) Parapet wall

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Last Answer : Answer: Option C

Pick up the incorrect statement from the following: (A) The retaining wall should be structurally capable to resist the applied earth pressure (B) The section of the retaining wall should be so proportioned that it may not overturn by the lateral pressure (C) The retaining wall should be safe against sliding (D) To drain off water from the earth retained, weep holes are provided near the top of the retaining wall

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Last Answer : Answer: Option D

A wall constructed to resist the pressure of an earth filling, is called (A) Retaining wall (B) Breast wall (C) Buttress (D) Parapet wall

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Last Answer : Option A