What is cat sheathing plywood?
Rather, it is a shortening of the word “category” and according to ps1-09, “the product standard for the production of plywood intended for structural (load-bearing) use” it mostly deals with plywood thickness. The abbreviation “PERF-CAT” or simply “Category” can be used in place of “CAT.”
What does ps2 10 mean?
PS 2-10, Performance Standard for Wood-Based Structural-Use Panels.
What is the difference between ps1 and ps2 plywood?
PS 1, Structural Plywood, establishes requirements for structural plywood. PS 2, Performance Standard for Wood-Based Structural-Use Panels, establishes requirements for structural wood-based panels such as oriented strand board (OSB), waferboard and certain types of plywood.
What does rated sheathing mean?
Structural-Use Panels. 2.0 Description. APA Rated Sheathing is rated for use as subfloor, wall, roof, diaphragm and shear wall sheathing. It is suitable for use in a range of construction and miscellaneous applications where strength and stiffness are required.
What is C2 plywood?
This Plywood is C2 graded meaning the “C” side has a more rough surface with visible knots and splits when compared to grade B. The “2” is the grade of the backside of the board. Grade 2 is used when color isn’t a concern. Larger knots are allowed, but they do not exceed a diameter of 3/4″.
What is plywood performance category?
Sanded Plywood Panels
| Performance Category | Minimum Thickness (in/mm) | Maximum Thickness (in/mm) |
|---|---|---|
| 3/4 | 0.734 (18.65) | 0.766 (19.45) |
| 13/16 | 0.788 (20.02) | 0.837 (21.26) |
| 7/8 | 0.849 (21.56) | 0.901 (22.89) |
| 1 | 0.970 (24.64) | 1.030 (26.16) |
What do the numbers on plywood mean?
The number on the left indicates the maximum recommended span in inches when the plywood is used as roof decking (sheeting. The right hand number applies to span when the plywood is used as subflooring. The rating applies only when the sheet is placed the long dimension across three or more supports.
What are the plywood grades?
There are four grades of plywood: A, B, C and D. The grade refers to the quality and appearance of the plywood’s face and back veneers. A has the highest quality and is the most expensive, and D is the least expensive. A-grade plywood features a smooth, sanded surface without knots.
How do you read a sheathing span rating?
Span rating—The span rating for APA RATED SHEATHING is two numbers separated by a slash. The left-hand number is the maximum recommended center-to-center spacing for supports in inches when the panel is used for roof sheathing with long dimensions across supports.