The factors those affect durability of concrete are:

1. Permeability 2. Frost action 3. Inorganic impurities 4. Organic acids On basis of above, which of the following option is best correct?

Select the correct statement respect of 'schedules of rate'?
1.PWD maintain printed schedule of rate book for various items.
2. Usually transport of materials up to 8 km is included in the rates. 3. Building cost index is also a part of schedules of rate.

The initial cost of equipment is Rs 1100, salvage value is Rs 100 and life of equipment is 5 years.
The rate of interest for sinking fund is 8%. The yearly depreciation by straight line method is

The formation of very small loose mass on the plastered surface is known as

The thickness of a reinforced brick partition wall is generally kept as

The minimum height of plinth of a building with respect to the level of the centre of the road passing at its front or back should be

The size of 'power shovel' is referred in

For the design of superelevation for mixed traffic conditions, the speed is reduced by

In a bitumen mix design by Marshall method,if binder content corresponding to maximum stability, maximum bulk specific gravity & designed limits of percent air voids are respectively x,y & z; then the optimum value of binder content is should be taken as

If the average centre to centre spacing of vehicle is 20 meters, then the basic capacity of the traffic lane at a speed of 50 kmph is

The foundations of bridges on erodible beds are taken down below the HFL by an amount equal to

Calculate the economic length of one span for RCC Slab Bridge if the total height of abutment or pier from the bottom of its foundation to its top is 6 m.

A submersible bridge is not designed to which of the following purpose?

The degree of static indeterminacy of a pin- jointed space frame is given by:
m = number of unknown member forces
r = unknown reaction components j = number of joints

The maximum tension in a cable occurs

An unstable vibratory motion due to combined bending and torsion which occurs in flexible plate like structures is called

Castigliano's first theorem is applicable

In case of drift method of tunnelling, the drift may be excavated at