Gutter Pan Slope

For example if you have 30 feet of guttering the calculation is 1 4 x 3 0 75 i e.

Gutter pan slope.

The slope of the gutter must be transitioned from the standard 1 12 slope to a 1 20 slope. There will be minimal grade adjustments necessary where the flatter gutter pan matches the existing street surface approx. Let s explore that further. As a general rule gutter slope is set at 1 4 inch per 10 feet of guttering.

So if you have a 25 foot section of guttering you should set the downspout end of the gutter 5 8 of an inch lower 1 4 x 2 5 5 8 than the other end. This grade adjustment can be accounted for in the patching that is required when replacing old curb and gutter sections. When adjusting from 1 12 to 1 20 gutter slope. Steep counter slopes will cause some wheelchairs to catch on back rollers and lose drive wheel traction.

This means the downspout end of the gutter should be set 3 4 of an inch lower than the other end. Sectional view of wheelchair at a counter slope condition with grades indicating the algebraic differences and limitations. The lower pan is cleated to the roof deck with the indicated clearances determined by expansion calculations. Second view showing double grade break.

Most contractors tend to set the slop at one quarter inch per ten feet of guttering. For roof slopes less than 6 on 12 the upper roof pan is attached to a locking strip soldered to the lower pan. See example table 8 8a. The concrete gutter is oftentimes at a different slope than the asphalt lane and its surface is rarely flush with the lane.

So what s the ideal amount of slope for your gutters.