Cracks propagate along wall face
d
38-44 mm
1 1/2"-1 3/4"
L
30-60 cm
1'-2'
Symbol Key
When perpendicular cracks to wall face are necessary:
Add a reliever hole. Spacing may be 10 cm (4') through 20 cm (8').
Drill larger d of holes
Demolition Technologies BRISTAR Distributors
P.O. Box 427
107 Mildred Street
Greenville, AL 36037
Phone:
1-800-282-4384
Fax:
(334) 382-7548
Email:
info@demolitiontechnologies.com
