Building Construction
Depth or height of the arch is the

Perpendicular distance between springing line and extrados
Perpendicular distance between intrados and extrados
None of these
Vertical distance between springing line and intrados

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Building Construction
Two columns 50 cm × 50 cm and 60 cm × 60 cm carry 80 tonnes and 120 tonnes of loads respectively. The centre to centre distance between columns is 5.00 metres. The permissible bearing capacity of the soil is 20 t/m2. If the footing is not to project more than 25 cm beyond the outside of the smaller column, pick up the correct design parameters of the footing from the following:

Area of footing slab = 11.00 m2
All listed here
Distance of C.G. of the loads from the smaller column = 3.00 m
The length of the foundation slab = 7.00 m

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