Multiply length peak to.
How to measeur rain gutter.
Rain gutters should be attached to the fascia and run the entire length of the roof ending with a downspout.
Then use the chart below to see what size gutter you need.
You ll need direct access to the gutters so a ladder is going to be a critical tool to have on hand.
6 inch 7 960 square feet.
A tape measure is necessary in order to determine lengths accurately.
Rain gutters can vary in size.
How do you calculate gutter size.
Run the tape measure from 1 corner of the gutter as far as you can go toward the opposite corner.
Measure the diameter of the gutter.
The steeper a roof s pitch the more windblown rain it can collect.
Use needlenosed pliers to slightly crimp the elbow to fit into the downspout as shown.
Measure your gutter across the top from the back where the gutter meets the home to the outer edge.
Rainfall intensity is measured in a 5 minute interval translated.
5 inch 5 520 square feet.
How to calculate gutter and downspout capacity step 1.
Find the rainfall intensity for your locale.
5 inch standard k style gutter shop 5 gutterbrush.
See photos below most residential gutters will measure approximately 5 inches across the top with the actual opening being approximately 4 5 inches.
If you can find one that is at least.
Measure from the chalk mark to the opposite corner of the gutter making another chalk mark and moving the ladder again if necessary.
Multiply the drainage area by the roof pitch factor and rainfall intensity to find out the adjusted square footage.
Typically gutters range in size from 10 to 15 cm 4 inches to 6 inches.
Secure the downspout outlet to the gutter with four pop rivets or screws.
Carefully climb down the ladder and move it to the chalk mark.
Use a measuring tape to determine the length of the gutter.
Tools you ll need to measure the rain gutters and downspouts ladder.
Make a mark with chalk and record the measurement.
Measure the roof to get the watershed area the area from which water will run off.
If the gutter run measures longer than 40 feet 12 2 m it should be positioned to pitch down from the middle aimed toward a downspout at each end.
Adjusting for pitch and rainfall.
Screw a downspout elbow to the outlet tube protruding down from the gutter.
Multiply the drainage area by the roof pitch factor and rainfall intensity to find out the adjusted.