The slenderness effect of a wall is considered if the effective height of the wall exceeds the thickness

If ‘H’ is the height of wall between centers of supports, then the effective height of wall where concrete floors have a bearing on wall irrespective of the direction of span will be

A

0.75 H

B

0.85 H

C

1.0 H

D

1.5 H

If the height of the hydraulic gradient line above the floor of thickness t is h and the specific gravity of the material of the floor is G, the minimum thickness t of the floor downstream of the crest-wall, is given by the equation

A

$${\text{t}} = \frac{{{\text{h}} + 1}}{{{\text{G}} + {\text{t}}}}$$

B

$${\text{t}} = \frac{{{\text{h}} - 1}}{{{\text{G}} + {\text{t}}}}$$

C

$${\text{t}} = \frac{{{\text{h}} - 1}}{{{\text{G}} - {\text{t}}}}$$

D

$${\text{t}} = \frac{{{\text{h}} + 1}}{{\text{G}}}$$

A

The growth of new rings in a trees is not a function of levels of precipitation.

B

Only the Brazilaian ash loses rings because of excessive heat.

C

One day of temperatures above 95 degrees Fahrenheit will cause the Brazilian ash to lose one ring.

D

The internal rings of all tress are of uniform thickness

The slenderness ratio of a column supported throughout its length by a masonry wall is

A

Zero

B

10

C

100

D

Iinfinity

The correct relationship among displacement thickness d, momentum thickness m and energy thickness e is

A

d > m > e

B

d > e > m

C

e > m > d

D

e > d > m

A ladder is resting against a vertical wall and its bottom is 2.5 m away from the wall. If it slips 0.8 m down the wall, then its bottom will move away from the wall by 1.4 m. What is the length of the ladder?

A

6.2 m

B

6.5 m

C

6.8 m

D

\7.5 m

Generally, no corrosion allowance in wall thickness of a part is required, if the thickness is more than __________ mm.

A

10

B

20

C

30

D

5

In a cavity wall, both leaves of which are load bearing, the effective thickness is taken as

A

Sum of thickness of both leaves

B

Two-third of the sum of thickness of both the leaves

C

Actual thickness of the stronger leaf

D

Larger of (B) and (C)

Intermediate vertical stiffeners in a plate girder need be provided if the depth of web exceeds (where t is thickness of web)

A

50t

B

85t

C

200t

D

250t

A column is regarded as long column if the ratio of its effective length and lateral dimension, exceeds

A

10

B

15

C

20

D

25

The slenderness effect of a wall is considered if the effective height of the wall exceeds the thickness

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