Which of the following action can be used to prevent deep frost penetration in the ground surface in building?$

Removing the frost susceptible soil

Placing insulating blankets of sand and gravel

Interposing a pervious gravel blanket

Which of the following action can be used to prevent deep frost penetr

1.	Which of the following action can be used to prevent deep frost penetration in the ground surface in building?$
A.	Removing the frost susceptible soil
B.	Placing insulating blankets of sand and gravel
C.	Providing proper drainage
D.	Interposing a pervious gravel blanket
Answer» C. Providing proper drainage