The ideal thickness for the standard rafter spacing of 24 inches is 5 8 th of an inch.
How many structural connecter per plywood roofing.
I understand the more plywood that needs to be replaced the more labor is involved and the roofer has the make sure his labor costs are covered.
In this case you need 47 sheets rounded off from 46 88.
H3 1 losp is the standard preservative treatment for bd structural square.
Ecoply structural plywood is available untreated or treated in accordance with as nzs 1604 3.
Additional plywood clips can be added to maximize load bearing in a specific area but the minimum clip placement described should be maintained in general.
Let s say that your roof has a total of 1 500 square feet.
The most common rafter spacing is 24 inches and 5 8 inch plywood is recommended for that.
Divide that by 32 the square footage of each 4 8 plywood sheet.
For rafters spaced 20 or more inches apart 1 2 or 5 8 inch plywood is recommended.
This kind of plywood can be used on roofs with minimal load.
This carries enough structural integrity for most roof loads.
I am paying for the materials.
Acquire the simpson strong tie pscl 7 16 in.
02 16 2007 04 33 pm.
The number you ll get is the number of sheets that you need.
Plywood clips are available in sizes to match nominal plywood thicknesses.
Galvanized 20 gauge steel plywood clips 250 pack pscl 7 16 r250 20 gauge steel construction creates a 1 8 in.
In many applications a substitution of rated sheathing that is 1 8 perf cat thicker than the specified structural i will result in comparable performance.
One 23 32 4 x 8 plywood piece would weigh approximately 67 lbs.
There is no way of knowing how many pieces of plywood need replaced until the tear off is complete.
I roofer wanted 20 per sheet of plywood for labor.
Steeper rather than flatter roofs will have lesser load per sq.
Using plywood for roof and floor sheathing can reduce risk of sagging roofs and floors.
Although the roof structure takes the majority of the weight plywood needs to be able to support the rest of the roofing system.
Plywood has structural strength in only one direction osb in two.
Structural i is unrelated to the bond classifications also known as exposure durability classifications exposure 1 and exterior.
Density of plywood is 34 36 pounds per cubic foot compared to osb at 38 42 pounds per cubic foot.
If treated ecoply structural plywood is treated with either h3 2 cca copper chrome arsenate or h3 1 losp azole clear treatment.
Why is plywood used in roofing.
Foot and with a maximum of spacing of 16 inches between rafters.
In roofing plywood is often selected due to its strength.
Proper structural function of the clips require they match the thickness of the plywood panels being used.
