What does ps2 10 mean?

PS 2-10, Performance Standard for Wood-Based Structural-Use Panels.

What is ps2 span rating?

The span rating identifies the recommended maximum1 center-to-center support spacing under normal use conditions. Panels for which there is no span rating are identified by the largest species group number of the face and back, or by the span rating of the next thinner comparable panel.

What is performance rated sheathing?

The Performance Rated Sheathing has designated Span Ratings for use in load-carrying applications. These panels are rated for strength properties and are not graded for their appearance since they are generally not exposed in their final use.

Is OSB stronger than sheathing?

Osb is stronger than plywood in shear. Shear values, through its thickness, are about 2 times greater than plywood. This is one of the reasons osb is used for webs of wooden I-joists. However, nail-holding ability controls performance in shear wall applications.

Is structural plywood waterproof?

If you are looking for something to withstand a great deal of moisture, you can use a special type of structural plywood called marine grade plywood. This type of board can endure really wet conditions (such as in a sauna or bath) and hours of continuous boiling without de-laminating.

Is CDX plywood APA rated?

C-D Exposure 1 APA Rated Plywood Sheathing, sometimes called “CDX” in the trade, is occasionally mistaken as an Exterior panel and erroneously used in applications for which it does not possess the required resistance to weather. “CDX” should only be used for applications as outlined under Exposure 1 above.

How far can OSB span?

2304.8 Floor and Roof Sheathing

PANEL GRADE	THICKNESS (inch)	MAXIMUM SPAN (inches)
Structural I sheathing	15/32	24
1/2	24
19/32, 5/8	24
23/32, 3/4	24

Can sheathing plywood be used outside?

Exterior means the panels have been waterproofed and can withstand inclement weather. Use exterior rated plywood for permanent outdoor structures that will be exposed to water long-term. Exposure 1 means the panels have been waterproofed and can withstand exposure to the elements during construction.

Is sheathing exterior grade?

Exterior ratings are for panels and sheathing that will be subjected to extended exposure to the elements. Exposure 1-rated panels and sheathing can withstand exposures to inclement weather during construction, but are not suitable for extended exposure.

Is CDX better than OSB?

Although some people will ultimately choose CDX, many experts argue that OSB is better overall for roofing. OSB is far less likely to expand and contract when exposed to humidity and moisture, even though it will take longer to dry. With wrapping, though, it can withstand the elements without issue.

What is CDX plywood good for?

CDX Plywood is used primarily by contractors to build exterior walls and roofs. CDX plywood has one side veneer grade “C” and one side veneer grade “D”. The two are bonded together with glue which can withstand a little moisture. The APA would recognize CDX Grade Plywood as C-D Exposure 1 plywood.

Is OSB stronger in one direction?

OSB panels are stronger in one direction than another. In the core the fibres run in the short direction of the panel. The reason for this is to maximise the strength of the board, however it does mean that the panel is slightly weaker in the short direction.

What’s the difference between sheathing and plywood?

Use hardwood plywood for furniture and anything that requires a strong load-bearing frame. Plywood sheathing or structural plywood is designed for permanent structures. It is strong and inexpensive, but unfinished, and therefore not suitable for places where it will show.