B - Quad-Lock Building Systems

TABLE 3.4
PRODUCT MANUAL
MINIMUM VERTICAL WALL REINFORCEMENT FOR 5½" [140mm] THICK FLAT ICF BASEMENT
WALLS
1,2,3,4,5
Max. Wall
Height
(feet)
8
9
10
Maximum
Unbalanced
Backfill Height 6
(feet)
Maximum
Equivalent Fluid
Density
30 pcf
Minimum Vertical Reinforcement
Maximum
Equivalent Fluid
Density
45 pcf
Maximum
Equivalent Fluid
Density
60 pcf
4 #4@48" #4@48" #4@48"
5 #4@48"
#3@12"; #4@22";
#5@32"; #6@40"
#3@8"; #4@14";
#5@20"; #6@26"
6
#3@12"; #4@22";
#5@30"; #6@40"
#3@8"; #4@14";
#5@20"; #6@24"
#3@6"; #4@10";
#5@14"; #6@20"
7
#3@8"; #4@14";
#5@22"; #6@26"
#3@5"; #4@10";
#5@14"; #6@18"
#3@4"; #4@6";
#5@10"; #6@14"
4 #4@48" #4@48" #4@48"
5 #4@48"
#3@12"; #4@20";
#5@28"; #6@36"
#3@8"; #4@14";
#5@20"; #6@22"
6
#3@10"; #4@20";
#5@28"; #6@34"
#3@6"; #4@12";
#5@18"; #6@20"
#4@8";
#5@14"; #6@16"
7
#3@8"; #4@14";
#5@20"; #6@22"
#4@8";
#5@12"; #6@16"
#4@6";
#5@10"; #6@12"
8
#3@6"; #4@10";
#5@14"; #6@16"
#4@6";
#5@10"; #6@12"
#4@4";
#5@6"; #6@8"
4 #4@48" #4@48" #4@48"
5 #4@48"
#3@10"; #4@18";
#5@26"; #6@30"
#3@6"; #4@14";
#5@18"; #6@20"
6
#3@10"; #4@18";
#5@24"; #6@30"
#3@6"; #4@12";
#5@16"; #6@18"
#3@4"; #4@8";
#5@12"; #6@14"
7
#3@6"; #4@12";
#5@16"; #6@18"
#3@4"; #4@8";
#5@12"
#4@6";
#5@8"; #6@10"
8
#3@4"; #4@8";
#5@12"; #6@14"
#4@6";
#5@8"; #6@12"
#4@4";
#5@6"; #6@8"
9
#3@4"; #4@6";
#5@10"; #6@12"
#4@4";
#5@6"; #6@8"
#5@4"; #6@6"
For SI: 1 foot = 0.3048 m; 1 inch = 25.4mm; 1 pcf = 16.0179 kg/m 3
1
Table values are based on reinforcing bars with a minimum yield strength of 40,000 psi [276 MPa] and concrete with a minimum
specified compressive strength of 2,500 psi [17.2 MPa].
2
Spacing of rebar shall be permitted to be multiplied by 1.5 when reinforcing steel with a minimum yield strength of 60,000 psi [414 MPa]
is used. Reinforcement shall not be less than one #4 bar at 48" [1.2 m] on center.
3
Deflection criterion is L/240, where L is the height of the basement wall in inches.
4
Interpolation shall not be permitted.
5
Walls shall be laterally supported at the top before backfilling.
6
Refer to Section 1.0 for the definition of unbalanced backfill height.
Courtesy Portland Cement Association
Page 164 Appendix B July 2009