The design of a retaining wall assumes that the retained earth

To have pressure wholly compressive under the base of a retaining wall of width b, the resultant of the weight of the wall and the pressure exerted by the retained, earth should have eccentricity not more than

A

$$\frac{{\text{b}}}{3}$$

B

$$\frac{{\text{b}}}{4}$$

C

$$\frac{{\text{b}}}{5}$$

D

$$\frac{{\text{b}}}{6}$$

If A is the area of the foundation of a retaining wall carrying a load W and retaining earth of weight 'w' per unit volume, the minimum depth (h) of the foundation from the free surface of the earth, is

A

$${\text{h}} = \frac{{\text{W}}}{{{\text{Aw}}}}\left$$

B

$${\text{h}} = \frac{{\text{W}}}{{{\text{Aw}}}}\left$$

C

$${\text{h}} = \frac{{\text{W}}}{{{\text{Aw}}}}{\left^2}$$

D

$${\text{h}} = \sqrt {\frac{{\text{W}}}{{{\text{Aw}}}}} {\left^2}$$

Total pressure on the vertical face of a retaining wall of height ‘h’ per unit run exerted by the retained earth weighing ‘w’ per unit volume, is

A

$${\text{wh}}\frac{{\left( {1 - \sin \varphi } \right)}}{{\left( {1 + \sin \varphi } \right)}}$$

B

$${\text{w}}{{\text{h}}^2}\frac{{\left( {1 - \sin \varphi } \right)}}{{\left( {1 + \sin \varphi } \right)}}$$

C

$$\frac{{{\text{w}}{{\text{h}}^2}\left( {1 - \sin \varphi } \right)}}{{2\left( {1 + \sin \varphi } \right)}}$$

D

$$\frac{{{\text{w}}{{\text{h}}^2}\left( {1 - \sin \varphi } \right)}}{{3\left( {1 + \sin \varphi } \right)}}$$

If ‘H’ is the overall height of a retaining wall retaining a surcharge, the width of the base slab usually provided, is

A

0.3 H

B

0.4 H

C

0.5 H

D

0.7 H

The design of heel slab of a retaining wall is based on the maximum bending moment due to:

A

Its own weight

B

Weight of the soil above it

C

Load of the surcharge, if any

D

All the above

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

If ‘W’ is weight of a retaining wall and ‘P’ is the horizontal earth pressure, the factor of safety against sliding, is

A

1.0

B

1.25

C

1.5

D

2.0

Rankine’s theory of earth pressure assumes that the back of the wall is

A

plane and smooth

B

plane and rough

C

vertical and smooth

D

vertical and rough

There are two domains on your network. The DESIGN domain trusts the SALES domain. A color printer is shared in the DESIGN domain, and print permissions have been granted to the Domain Users and Domain Guests groups in the DESIGN domain. The Guest account has been enabled in the DESIGN domain. User John Y logs on using his account in the SALES domain. What must you do to allow JohnY to access the printer?

A

Make JohnY a member of the DESIGN Domain Guests group

B

Make JohnY a member of the DESIGN Domain Users group

C

Do nothing. JohnY can access the printer now

D

JohnY cannot access the printer with this configuration

E

None of the above

Total pressure on the vertical face of a retaining wall of height h acts parallel to free surface and from the base at a distance of

A

$$\frac{{\text{h}}}{4}$$

B

$$\frac{{\text{h}}}{3}$$

C

$$\frac{{\text{h}}}{2}$$

D

$$\frac{{2{\text{h}}}}{3}$$

The design of a retaining wall assumes that the retained earth

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