Gutter Expansion Joint Spacing

Next we need to check spacing 335lf 8 downspouts 40 centers approximate.

Gutter expansion joint spacing. Most new box gutters these days are made of either copper or stainless steel although many old box gutters were made of terne coated steel. Expansion joints are a component in seamless rain gutter systems designed to protect the gutters from the effects of thermal expansion. 8 commercial box gutter expansion joint in kynar 500 steel use an expansion joint every 40 50 lineal feet. The space between sidewalk joints shall not exceed 125 of the sidewalk width for example.

Note that gutters require expansion joints at 40 centers. In general long straight runs should have joints spaced a maximum of 48 feet apart. Expansion joint galv 24g 8 box kynar finish. By reducing the downspout spacing to perhaps 35lf you could use a 6 gutter with 9 4 x6 downspouts in lieu of an 8 system.

Expansion joints may also be required at changes in gutter width or depth at corners and at end. Recommended hanger spacing is 24 on centers. There are a couple of options when it comes to expansion joints in gutters. Copper aluminum zinc and galvanized steel.

Thermal expansion is the tendency for a material to expand and contract when exposed to changes in temperature. Sidewalk that abuts curb or gutter shall have joints that match the curb or gutter joints. Expansion joints in copper gutters must be provided to allow for the natural expansion and contraction of copper caused by thermal changes.