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Euro Standards |
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US Grades Listed by BS 5268-2:
2002
- Plywood used for structural purposes must be approved and certified
as appropriate.
- BS 5268-2 Structural use of timber: code of practice for permissible
stress design materials and workmanship carries a list of approved
plywood types and grades.
- It also names the national organisation required to conduct quality
control procedures. In the US this is either APA or TECO.
American Plywood Grades
(Only those thickness’s & no.
of plies listed in the tables) |
| Grade |
American Standard
|
Quality Control Agency
|
BS 5268-2 |
| |
|
|
Clause |
Table |
| Sheathing |
|
Rated Sheathing C-D Exposure 1 (CDX)
|
PS1-95 |
APA |
4.4 grade a) 1)
|
40
|
| Sheathing Span C-D Exposure 1 (CDX) |
PS1-95 |
TECO |
|
|
| Rated Sheathing Exposure 1 |
PS2-92 orPRP-108 |
APA |
4.6
|
(see *)
|
| Rated Sheathing C-C Exterior (CCX) |
PS1-95 |
APA |
4.4 Grade a) 2)
|
41
|
| Sheathing Span C-C Exterior (CCX) |
PS1-95 |
TECO |
|
|
| Rated Sheathing Exterior |
PS2-92 or
PRP-108
|
APA |
4.6
|
(see *)
|
| Single Layer Floor |
| Sturd-I-Floor Exposure 1 |
PS1-95 |
APA |
4.4 Grade a)
4) & 5)
|
43
|
| Floor Span Exposure 1 |
PS1-95 |
TECO |
|
|
| Sturd-I-Floor Exposure 1 |
PS2-92 orPRP-108 |
APA |
4.6
|
(see *)
|
| Other Grades |
|
A-C Exterior (ACX)
|
PS1-95
|
APA & TECO
|
4.4 Grades a) 3)
|
42
|
|
B-C Exterior (BCX)
|
PS1-95
|
APA & TECO
|
|
|
|
C-D plugged Exposure 1
|
PS1-95
|
APA & TECO
|
4.4 Grades a) 4)
|
43
|
|
C-C plugged Exterior
|
PS1-95
|
APA & TECO
|
4.4 Grades a) 5)
|
|
|
*Grade stresses and moduli may be
derived by equations given in clause 4.6 from characteristic values obtained
from the appropriate European Standards for structural plywood, methods
of test and derivation of characteristic values (i.e. BS EN 789 & BS
EN 1058).
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