Building Construction MCQ Questions & Answers | Civil Engineering

The correct answer is (A) Cleat.
Let's break down why:

* A cleat is a small piece of wood, often triangular, that is fixed to a post or wall.
* It acts as a stop or support for something, like a door.
* In this case, the wooden block hinged on a post, serving as an outside door stop, perfectly describes a cleat.

Let's look at why the other options aren't quite right:
* Stop: While a cleat *functions* as a stop, the question asks for the *name* of the wooden block itself.
* Horn: A horn is a projection, but it's not typically associated with a hinged wooden block or door stops.
* None of these: Since Cleat is a valid answer, this isn't correct.

So, the most accurate term for a hinged wooden block acting as a door stop is a Cleat.

The window provided in the flat roof of a room is known as a Sky window. This type of window is designed to allow natural light to enter from above, enhancing the illumination within the room. It is also commonly referred to as a "roof window" or "rooflight."

Therefore, the correct answer is Option D: Sky window.

The Dutch bond is a modified form of the English bond. In this bond, headers and stretchers are laid in alternate courses, similar to the English bond.

The distinguishing feature is that each stretcher course starts at the quoin with a three-quarter brick bat. In alternate stretcher courses, a header is also placed next to the three-quarter brick bat to provide proper bonding at the corner.

Option A: English cross bond
Incorrect. Although it is related to the English bond arrangement, the use of a three-quarter brick bat at the beginning of every stretcher course is a characteristic feature of Dutch bond.

Option B: Dutch bond
Correct. In Dutch bond, alternate courses consist of headers and stretchers, and every stretcher course starts with a three-quarter brick bat.

Option C: Monk bond
Incorrect. Monk bond is a type of garden-wall bond in which the arrangement of headers and stretchers differs from the Dutch bond.

Option D: Rat-trap bond
Incorrect. Rat-trap bond is a cavity-type brick masonry arrangement in which bricks are laid on edge to create a cavity within the wall.

Hence, Option B — Dutch bond is the correct answer.

The relationship between the offset (a) and depth (d) of a concrete bed comes from the standard slope provided for bed concrete in foundations.

In practice, the concrete bed is laid with side slopes of approximately 63° 26′.

Using this slope, the ratio between depth (d) and offset (a) becomes:

d = a × tan(26° 34′) ≈ 0.557 a

Thus, the correct proportional relationship between depth and offset of a concrete bed is:

d = 0.557 a