The discharge will be at a nice point far from my house.
My gutters go into 4 inch pvc.
There should be no more than a inch drop in the direction of the downspout.
If a roof s various drainage areas call for different size gutters go for the biggest one k style.
Wipe pvc glue using its applicator around the outside and.
Run water into the gutter at the top of the.
I used a 3 4 stepdown coupling on the end of the pvc and put my black corrugated pipe around the 3 inch end.
How many downspouts can i run into a single 4 pvc.
And topsites i do agree.
Step 1 start from the location of the down spout on the gutter system and mark the desired path of the pvc drainage pipe on the ground using construction marker spray.
There will be a total of 4 downspouts merging into the same line.
Size downspouts to fit the gutter.
It connects fairly well so the backfill was enough to hold that in to place.
A square inch of downspout can drain 1 200 square feet of roof during a rain with an intensity of one inch per hour.
My roof in cincinnati will capture about 145 000 gallons this year.
I used 4 pvc and fittings because it was readily available but any size would potentially work.
The rainfall that falls on an average roof can be tremendous.
A typical house in the chicago area can have in excess of 50 000 gallons of water fall on the roof in just one year.
I don t think that side of the home has of 2k square feet of roof at the most.
Roof area the locale s rainfall intensity and gutter capacity determine how many square inches of downspout are needed.
I m thinking 4 should be sufficient.
Fittings can be permanently welded to the pipe with pvc cement.
I plan on burying my downspouts and having them merge into one 4 drain pipe.
The length will be about 200 ft from the first downspout to the discharge.
Multiply the drainage area by the roof pitch factor and rainfall intensity to find out the adjusted square footage.
Once the pvc was glued i set it in the trench.
Once every two years or so we get storms where the the existing gutter system on 90 of the homes in the area can t handle the flow of water from a torrential storm.
5 inch 5 520 square feet.
Allowing your roof water to simply discharge onto and into the soil around your house is a big mistake.
If it looks like the gutter is loose check the gutter fasteners.
Smooth 4 inch diameter plastic sdr 35 sewer pipe is the material i prefer to use.
By connecting a series of pvc pipes underground and hooking them up to your gutter system you can divert the water away from the home and safely into a designated area.
Then use the information below to see what size gutter you need.