A. 4% to 6%
B. 10% to 12%
C. 15% to 20%
D. 100%
Related Mcqs:
- The practical limit of moisture content achieved in air drying of timber is________________?
A. 5%
B. 15%
C. 25%
D. 35% - With increase in moisture content, the bulking of sand_______________?
A. increases
B. decreases
C. first increases to a certain maximum value and then decreases
D. first decreases to a certain minimum value and then increases - Percentage of carbon content in mild steel is_______________?
A. less than 0.25
B. between 0.25 and 0.7
C. between 0.7 and 1.5
D. greater than 1.5 - The disease of dry rot in timber is caused by_____________?
A. lack of ventilation
B. alternate wet and dry conditions
C. complete submergence in water
D. none of the above - In which of the following directions, the strength of timber is maximum ?
A. parallel to grains
B. 45° to grains
C. perpendicular to grains
D. same in all directions - First class timber has an average life of_____________?
A. less than one year
B. 1 to 5 years
C. 5 to 10 years
D. more than 10 years - The type of joint commonly used at the junction of a principal rafter and tie beam in timber trussess is__________________?
A. mortise and tennon joint
B. oblique mortise and tennon joint
C. butt joint
D. mitred joint - The horizontal timber piece provided at the apex of a roof truss which supports the common rafter is called______________?
A. ridge board
B. hip rafter
C. eaves board
D. valley rafter - The main function of alumina in brick earth is_______________?
A. to impart plasticity
B. to make the brick durable
C. to prevent shrinkage
D. to make the brick impermeable - The function of king post in a king post roof truss is_______________?
A. to support the frame work of the roof
B. to receive the ends of principal rafter
C. to prevent the walls from spreading outward
D. to prevent the tie beam from sagging at its centre
