Question

For a rigid pavement,
$\text{magnitude of load stress}=15kg/c{m}^2$
$\text{warping stress}=10.8kg/c{m}^2$
$\text{frictional stress}=2kg/c{m}^2$
then (The values are same at all regions)

• A. The stress in interior region at top in summer mid-day is 27.8 kg/cm2
• B. The stress in corner region at top in summer mid-day is 17 kg/cm2
• C. The stress in edge region at top in summer mid-night is 6.2 kg/cm2
• D. The stress in edge region at bottom in summer mid-night is 23.8 kg/cm2

Answer 1

The correct option is C The stress in edge region at top in summer mid-night is 6.2 kg/cm2

The stress in corner region at top in summer mid-day,
$=15-10.8=4.2kg/c{m}^2$

The stress in edge region at bottom in winter mid-night,
$=15-10.8+2=6.2kg/c{m}^2$

The stress in interior region at top in summer mid-day,
$=15+10.8+2=27.8kg/c{m}^2$

The stress in edge region at bottom in summer mid-night,
$=15-10.8-2=2.2kg/c{m}^2$