To determine the design area for a pitched roof, Table 1-1 is used. These areas are then divided by the proper factor given in Table 1-2, thus obtaining the required area in square inches …

Calculations are based on level gutter capacity as experimentally determined by the National Institute of Standards and Technology (NIST). Downspout Sizes must not exceed the bottom …

Jul 10, 2024 · Calculating the correct size of the gutters for your home is a crucial step in preventing overflow and damage. Start by measuring each section of the roof and multiplying …

Dec 5, 2024 · By using this calculator, users can factor in variables such as roof area, rainfall intensity, and roof pitch to come up with the most appropriate gutter size, ensuring both …

Feb 2, 2024 · Learn how to calculate the correct gutter slope and pitch for optimal water drainage. Discover the importance of gutter slope, tips for accurate measurement, and common FAQs to …

Calculate gutter size and downpipe capacity based on roof area and rainfall intensity.

Factors to be considered in the design of roof drainage systems are the area to be drained, size of gutters, downspouts, outlets, slope of roof, type of building, and appearance. The design …

To do this, many factors including rainfall intensity, roof catchment area, gutter size/capacity, gutter outlet type (sumps, rainheads, nozzles), downpipe size, overflow planning and material …

Mar 28, 2025 · Calculate the Gutter Size: use your roof’s square footage and pitch to estimate the right gutter size using a pitch multiplier. 5,500 to 7,500: Use 5-inch K-style gutters. Above …

Calculate the adjusted square footage by multiplying the square footage of the gutter’s drainage area by the roof pitch factor and the rainfall intensity. This number will tell you what size gutter …

Oct 29, 2024 · With a step-by-step approach, you’ll know exactly what size gutters and downspouts are needed to keep water flowing efficiently throughout the year. Getting your …

This document provides a design for a roof runoff structure including gutters and downspouts. It calculates the roof area, gutter size and capacity, downspout size and capacity, and whether …

Jan 17, 2025 · Our handy calculator makes it easy to estimate needed materials and costs. House Length (feet): ? House Width (feet): ? Number of Stories: ? Gutter Material: ? Number of …