Building Construction
The depth of an arch is the distance between

Intrados and extrados
Crown and springing line
Crown and ground level
Ground level and springing line

ANSWER DOWNLOAD EXAMIANS APP

Building Construction
During percussion drilling

Caving or mixing of strata are caused in soft soils or cohesion-less soils
Ground water observations are hindered due to entry of the slurry in the soil below the bottom of the hole
The soil to a considerable depth below the bottom of the hole gets disturbed
All listed here

ANSWER DOWNLOAD EXAMIANS APP