Top bars are extended to the projecting parts of the combined footing of two columns L distance apart for a distance of

Bottom bars under the columns are extended into the interior of the footing slab to a distance greater than

A

42 diameters from the centre of the column

B

42 diameters from the inner edge of the column

C

42 diameters from the outer edge of the column

D

24 diameters from the centre of the column

If q is the punching shear resistance per unit area a, is the side of a square footing for a column of side b, carrying a weight W including the weight of the footing, the depth (D) of the footing from punching shear consideration, is

A

$${\text{D}} = \frac{{{\text{W}}\left( {{\text{a}} - {\text{b}}} \right)}}{{4{{\text{a}}^2}{\text{bq}}}}$$

B

$${\text{D}} = \frac{{{\text{W}}\left( {{{\text{a}}^2} - {{\text{b}}^2}} \right)}}{{4{{\text{a}}^2}{\text{bq}}}}$$

C

$${\text{D}} = \frac{{{\text{W}}\left( {{{\text{a}}^2} - {{\text{b}}^2}} \right)}}{{8{{\text{a}}^2}{\text{bq}}}}$$

D

$${\text{D}} = \frac{{{\text{W}}\left( {{{\text{a}}^2} - {{\text{b}}^2}} \right)}}{{4{\text{abq}}}}$$

In a combined footing for two columns carrying unequal loads, the maximum hogging bending moment occurs at

A

Less loaded column

B

More loaded column

C

A point of the maximum shear force

D

A point of zero shear force

In a shipment of 120 machine parts, 5 percent were defective. In a shipment of 80 machine parts, 10 percent were defective. For the two shipments combined, what percent of the machine parts were defective?

A

6.5%

B

7%

C

7.5%

D

8.0%

In a shipment of 120 machine parts, 5 percent were defective. In a shipment of 80 machine parts, 10 percent were defective. For the two shipments combined, what percent of the machine parts were defective ?

A

6.5%

B

7.0%

C

7.5%

D

8.0%

In a shipment of 250 machine parts, 4% were defective. In another shipment of 50 parts, 10% were defective. For two shipments combined what percent of the machine parts were defective?

A

3%

B

5%

C

7.5%

D

8%

in a shipment of 120 machine parts, 5% were defective. In a shipment of 80 machine parts 10% were defective. For the two shipments combined, what percent of the machine parts were defective?

A

6.5%

B

7.0%

C

7.5%

D

8.5%

In a shipment of 120 machine parts 5 percent , 5 percent were defective , In a shipment of 80 machine parts , 10 percent were defective. For the two shipments combined , what percent of the machine parts were defective ?

A

6.5%

B

7%

C

7.5%

D

8.0%

If the width of the foundation for two equal columns is restricted, the shape of the footing generally adopted, is

A

Square

B

Rectangular

C

Trapezoidal

D

Triangular

Based on punching shear consideration, the overall depth of a combined footing under a column A, is

A

$$\frac{{{\text{Area of the column A}} \times {\text{Safe punching stress}}}}{{{\text{Load on column A}}}}$$

B

$$\frac{{{\text{Perimeter of column A}} \times {\text{Safe punching stress}}}}{{{\text{Load on column A}} + {\text{Upward pressure}} \times {\text{Area of column}}}}$$

C

$$\frac{{{\text{Perimeter of column A}} \times {\text{Safe punching stress}}}}{{{\text{Load on column A}} \times {\text{Upward pressure}} \times {\text{Area of column}}}}$$

D

None of these

Top bars are extended to the projecting parts of the combined footing of two columns L distance apart for a distance of

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