Roof Sheathing Thickness 24 Oc For Snow Loads

The thickness required by josh s circumstances are good for roof snow loads of up to 70 psf again spanning 24.

Roof sheathing thickness 24 oc for snow loads.

For rafters or 16 in. The applicable section properties table c can be divided into load capacity to. 24 16 teco sheathing span. Sheathing should be a minimum of 19 32 inch thick.

For rafters spaced 20 or more inches apart 1 2 or 5 8 inch plywood is recommended. Never attach roof sheathing with staples. Support spacing when the panel is used for subflooring. What about the roof sheathing at 24 in.

The second number is the maximum o c. That means it can be used at 24 in. For subfloors zip s 1 2 in. A panel marked 32 16 may be used for roof sheathing over supports spaced up to 32 inches o c.

24 oc 0 719 0 750 32 oc 0 875 1 000 48 oc 1 125 a the values in this table correspond with those. The most common rafter spacing is 24 inches and 5 8 inch plywood is recommended for that. Uniform load deflection limitations 1 180 of span under live load plus dead load 1 240 under live load only. Multi span normal duration of load dry conditions panels 24 inches or wider span rating b load governed by c strength axis a perpendicular to supports span center to center of supports inches parallel to supports span center to center of supports inches 12 16 19 2 24 30 32 36 40 48.

It will support roof. The typical thickness range for sheathing is 3 8 to 3 4 inch. The first number is the maximum on center o c support spacing in inches for roof sheathing. Huber s zip system sheathing which we are using on the fhb house has a span rating of 24 16 for 7 16 in.

Nominal panel thickness table b assists in calculation of geometric cross sectional properties. For the curious 7 16 osb has a span rating of 24 16 and with supports every 24 inches is good for a roof live load of 40 psf pounds per square foot with a 10 psf dead load. Two numbers separated by a slash e g 32 16 or 48 24. Applies to panels 24 inches or wider.

Roof sheathing comes in grid marked 4 by 8 foot sheets and should be installed perpendicular to the frame. Panels are rated 32 16.