Technical Specifications
All concrete masonry units shall comply with ASTM C90-02, as manufactured by Capitol Concrete Products, Co., Topeka, Kansas.
If you want “Lightweight Blocks” (in this locality commonly known as “Haydite Blocks”), specify that the aggregate shall meet ASTM C331. If you want “Normal Weight” blocks (in this locality commonly known as “Concrete Blocks”), specify that the aggregate shall meet ASTM C33.
Note: Split Face and Colored Blocks shall be manufactured with an integral water repellant, and the mortar used with them shall contain a water repellant.
When using Split Face and/or Colored Block, blocks from two or more cubes shall be mixed as they are being laid to ensure color and/or face variations will be divided.
For additional technical information, visit the Tech Bulletins offered by the National Concrete Masonry Association (NCMA), or contact our sales staff for assistance.
Technical Specifications
All concrete masonry units shall comply with ASTM C90-02, as manufactured by Capitol Concrete Products, Co., Topeka, Kansas.
If you want “Lightweight Blocks” (in this locality commonly known as “Haydite Blocks”), specify that the aggregate shall meet ASTM C331. If you want “Normal Weight” blocks (in this locality commonly known as “Concrete Blocks”), specify that the aggregate shall meet ASTM C33.
Note: Split Face and Colored Blocks shall be manufactured with an integral water repellant, and the mortar used with them shall contain a water repellant.
When using Split Face and/or Colored Block, blocks from two or more cubes shall be mixed as they are being laid to ensure color and/or face variations will be divided.
For additional technical information, visit the Tech Bulletins offered by the National Concrete Masonry Association (NCMA), or contact our sales staff for assistance.
| Wall Thickness | Lbs. Per Sq. Ft. | Fire Rating | Sound Class | R Value | |
| 4″ | 4″ Split Block Normal Weight |
32 | 1 | 41 | 1.72 |
| 4″ | 4″ Slump Block |
32 | 1 | 41 | 1.72 |
| 4″ | Clay Brick | 40 | 1 | 45 | 0.44 |
| Wall Thickness | Lbs. Per Sq. Ft. | Fire Rating | Sound Class | R Value | |
| 8" | Clay Brick & 4" Lt. Wt. Blk. Back-Up | 61 | 4 | 50+ | 3.73 |
| 10" | Clay Brick & 6" Lt. Wt. Blk. Back-Up | 65 | 4 | 50+ | 3.92 |
| 12" | Clay Brick & 8" Lt. Wt. Blk. Back-Up | 72 | 4 | 50+ | 4.15 |
| VARIES | Clay Brick & 8" Lt. Wt. Blk. Back-Up with 3/4 to 4" cavity | 73 | 4 | 50+ | 5.12 |
| Wall Thickness |
Lbs. Per Sq. Ft. |
Fire Rating |
Sound Class |
R Value |
|
| 10″ | 4″ Split Block Normal Wt. & 6″ Lt. Wt. Blk. Back-Up |
59 | 4 | 50+ | 3.45 |
| 12″ | 4″ Split Block Hvy. Wt. & 8″ Lt. Wt. Blk. Back-Up |
64 | 4 | 50+ | 3.7 |
| 10″ | 4″ Split Block Normal Wt. & 6″ Lt. Wt. Blk. Back-Up |
59 | 4 | 50+ | 3.45 |
| 12″ | 4″ Split Block Normal Wt. & 8″ Lt. Wt. Blk. Back-Up |
64 | 4 | 50+ | 3.7 |
| Wall Thickness | Lbs. Per Sq. Ft. | Fire Rating | Sound Class | R Value | |
| 4″ | 4″ Lt. Wt. Block |
21 | 1 | 40 | 2.44 |
| 6″ | 6″ Lt. Wt. Block |
25 | 1* | 44 | 2.63 |
| 8″ | 8″ Lt. Wt. Block |
32 | 2* | 45 | 2.86 |
| 10″ | 10″ Lt. Wt. Block |
39 | 4 | 45+ | 3.13 |
| 12″ | 12″ Lt. Wt. Block |
43 | 1 | 50 | 3.33 |
| Wall Thickness | Lbs. Per Sq. Ft. | Fire Rating | Sound Class | R Value | |
| 4″ | 4″ Lt. Wt. Block |
21 | 1 | 40 | 2.44 |
| 6″ | 6″ Lt. Wt. Block |
25 | 1* | 44 | 2.63 |
| 8″ | 8″ Lt. Wt. Block |
32 | 2* | 45 | 2.86 |
| Wall Thickness | Lbs. Per Sq. Ft. | Fire Rating | Sound Class | R Value | |
| 8″ | 8″ Split Flute Normal Wt. | 47 | 2 | 52 | 2.1 |
| 8″ | 8″ Slump Block | 45 | 2 | 49 | 2.7 |
| Wall Thickness | Lbs. Per Sq. Ft. | Fire Rating | Sound Class | R Value | |
| 4″ | 4″ Split Block Normal Weight |
32 | 1 | 41 | 1.72 |
| 4″ | 4″ Slump Block |
32 | 1 | 41 | 1.72 |
| 4″ | Clay Brick | 40 | 1 | 45 | 0.44 |
| Wall Thickness |
Lbs. Per Sq. Ft. |
Fire Rating |
Sound Class |
R Value |
|
| 8″ | Clay Brick & 4″ Lt. Wt. Blk. Back-Up |
61 | 4 | 50+ | 3.73 |
| 10″ | Clay Brick & 6″ Lt. Wt. Blk. Back-Up |
65 | 4 | 50+ | 3.92 |
| 12″ | Clay Brick & 8″ Lt. Wt. Blk. Back-Up |
72 | 4 | 50+ | 4.15 |
| VARIES | Clay Brick & 8″ Lt. Wt. Blk. Back-Up with 3/4 to 4″ cavity |
73 | 4 | 50+ | 5.12 |
| Wall Thickness |
Lbs. Per Sq. Ft. |
Fire Rating |
Sound Class |
R Value |
|
| 10″ | 4″ Split Block Normal Wt. & 6″ Lt. Wt. Blk. Back-Up |
59 | 4 | 50+ | 3.45 |
| 12″ | 4″ Split Block Hvy. Wt. & 8″ Lt. Wt. Blk. Back-Up |
64 | 4 | 50+ | 3.7 |
| 10″ | 4″ Split Block Normal Wt. & 6″ Lt. Wt. Blk. Back-Up |
59 | 4 | 50+ | 3.45 |
| 12″ | 4″ Split Block Normal Wt. & 8″ Lt. Wt. Blk. Back-Up |
64 | 4 | 50+ | 3.7 |
| Wall Thickness | Lbs. Per Sq. Ft. | Fire Rating | Sound Class | R Value | |
| 4″ | 4″ Lt. Wt. Block |
21 | 1 | 40 | 2.44 |
| 6″ | 6″ Lt. Wt. Block |
25 | 1* | 44 | 2.63 |
| 8″ | 8″ Lt. Wt. Block |
32 | 2* | 45 | 2.86 |
| 10″ | 10″ Lt. Wt. Block |
39 | 4 | 45+ | 3.13 |
| 12″ | 12″ Lt. Wt. Block |
43 | 1 | 50 | 3.33 |
| Wall Thickness | Lbs. Per Sq. Ft. | Fire Rating | Sound Class | R Value | |
| 4″ | 4″ Lt. Wt. Block |
21 | 1 | 40 | 2.44 |
| 6″ | 6″ Lt. Wt. Block |
25 | 1* | 44 | 2.63 |
| 8″ | 8″ Lt. Wt. Block |
32 | 2* | 45 | 2.86 |
| Wall Thickness | Lbs. Per Sq. Ft. | Fire Rating | Sound Class | R Value | |
| 8″ | 8″ Split Flute Normal Wt. | 47 | 2 | 52 | 2.1 |
| 8″ | 8″ Slump Block | 45 | 2 | 49 | 2.7 |
