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PVC Weep Tubes
Block Cap
Installation and
Technical Data
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PVC Control Joints and Rubber Control Joints
BoMetals masonry control joints are available in both PVC and Rubber compounds. They are standard black in color in 4' lengths. Special lengths are available on request.
| Catalog # |
Material |
A |
B |
C |
D |
#lbs./LF |
| BCJ-1 |
PVC |
2 3/8" |
5/8" |
1 1/2" |
5/16" |
.75 |
| BCJ-8 |
Rubber |
2 3/8" |
5/8" |
1 1/2" |
5/16" |
.52 |
| BCJ-2 |
PVC |
2 3/8" |
5/8" |
1" |
5/16" |
.60 |
| BCJ-9 |
Rubber |
2 3/8" |
5/8" |
1" |
5/16" |
.42 |
| BCJ-3 |
PVC |
6 3/8" |
5/8" |
1 1/2" |
7/16" |
1.00 |
| BCJ-10 |
Rubber |
6 3/8" |
5/8" |
1 1/2" |
7/16" |
.69 |
| BCJ-4 |
PVC |
10 3/8" |
5/8" |
1 1/2" |
7/16" |
1.35 |
| BCJ-11 |
Rubber |
10 3/8" |
5/8" |
1 1/2" |
7/16" |
.94 |
Cracking in block walls normally results from restrained movement. This movement may originate within a building
material due to temperature change or shrinkage, or may result from movement of adjacent building elements.
In most cases, movement is inevitable and must be accounted for during design if cracking is to be controlled.
BoMetals Control joints, when placed in concrete masonry walls, are an excellent method of crack control.
Control joints are vertical separations built into a concrete masonry wall to reduce restraint and permit longitudinal movement.
They are located where cracking is likely to occur due to excessive tensile stress.
Control joints are typically located at
wall openings
changes in wall height or thickness
construction joints in foundations, roofs and floors
wall intersections
a distance of not over one-half the allowable joint spacing from all corners
a determined spacing for the length of the wall
For walls without openings, control joints are used to effectively divide a wall into a series of isolated panels.
Physical Properties:
| Properties of PVC Control Joints |
Test Method of PVC Control Joints |
Nominal Value of PVC Control Joints |
| Tensile Strength |
ASTM D-638 |
2000 PSI |
| Elongation |
ASTM D-638 |
350% |
| Specific Gravity |
ASTM D-792 |
1.40 |
| Hardiness Shore A |
ASTM D-2240 |
85 + /-5 |
| Properties of Rubber Control Joints |
Test Method of Rubber Control Joints |
Nominal Value of Rubber Control Joints |
| Tensile Strength |
ASTM D-2000 |
1300 PSI |
| Elongation |
ASTM D-2000 |
350% |
| Hardiness Shore A |
ASTM D-2000 |
85 + /-5 |
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