Question

Roofing gutters should slope down toward the downspout at the rate of _____ per foot, or 1/4-inch per 5 to 10 feet.

3/10-inch
1/12-inch
1/16-inch

Answer 1

Roofing gutters should slope at a rate of 1/16-inch per foot for effective drainage. This corresponds to 1/4-inch per 5 to 10 feet.

Step-by-step explanation:

The slope for roofing gutters toward the downspout should be 1/16-inch per foot to ensure proper drainage. This slope and rate allow for efficient water flow without being too steep. For longer spans of gutters, a common practice is to slope them at 1/4-inch per 5 to 10 feet. To calculate this, you would set up a ratio that compares the scale distance (the slope per foot or per length of the gutter) to the actual distance (the total length of gutter run).