10- Integrity of Repairs and Alterations

Question 1

When parts or riveted seams are sealed by welding, the rivets and seams should be caulked for at least ,,,,,in all directions from the welding

Answer 1

6 in. (150 mm)

Question 2

Soil foundations that have washed out or settled under the bottoms of atmospheric storage tanks can be repaired by ,,,,,, under the tank

Answer 2

pumping sand,
drilling mud,
clay,
lean concrete or similar material