Roof Expansion Joint Spacing

The purpose of an expansion joint is to prevent stress damage cracking tearing splitting.

Roof expansion joint spacing.

It is the designer decision. Expansion joints are found in many building components. A practical limit between expansion joints for tfr is in the range of 100 to 200 when these roofs are attached to light gage cold formed purlins. My question is whether an expansion joint is required in the middle at 27m location.

I have searched quite a lot resources. 6 152 mm expansion joint. In structural elements such as walls or roof decks an expansion joint is typically a gap between sections of the element. Depending on the manufacturer it is in the range of 150 to 200.

In general the top surface of the curbs should be sloped away from the joint to shed condensation and moisture onto the roof. That can mean costly time consuming callbacks. The curbs should extend at least 8 or 10 if a cant is used above the adjacent roof. 23 30 kg thicknesses.

23 30 kg thicknesses. 50 65 lb. 50 15 24 m 10 254 mm expansion joint. Expansion joints in roofs require wood curbs around each roof area.

Plywood and oriented strand board osb like all wood products will expand or shrink slightly with changes in moisture content. Standing seam roofsare limited by the range of the sliding clips. 50 65 lb. 50 15 24 m 8 203 mm expansion joint.

50 65 lb. 23 30 kg thicknesses. Apa recommends a 1 8 inch space between panel edge and end joints. Roof decks walls and gutters among others.

Your answer is highly appreciated.