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-   -   Gutter drainage (http://www.diychatroom.com/f105/gutter-drainage-186341/)

kurtp2 09-02-2013 07:33 AM

Gutter drainage
 
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Sorry for double post but this time there should be a picture.
I am rebuilding a landing that will raise the existing floor a few inches. I am putting in drainage just below the brick pavers (see pic). Question is what material do I use: 3 inch round dwv PVC, 2x3 aluminum or 2x3 vinyl gutter? Should I cement it in. The elbow run in question is 30".

I will connect this to continue drainage out the back behind the stairs where it slopes down. Existing brick stairs will be raised to level of landing which is the last stair step. Roof area is 350 sq ft.

Attachment 75440

wkearney99 09-02-2013 07:49 AM

Got a better picture of the overall area? Where's the water going to be running?

kurtp2 09-02-2013 12:53 PM

1 Attachment(s)
There is a 4' drop to the back about 5' away. I would like to keep the 2"x 3" (small) drain profile but the 3" dwv pipe is more durable. I have a spare Al downspout section to use though aluminum may fail through corrosion.

Attachment 75453

wkearney99 09-02-2013 01:05 PM

Ah, I see your dilemma. But you're not planning on ending the steps that way, are you? Is there another flight of wood steps going to overlay the masonry ones? I'd hope so, otherwise you've got a leg-breaker of a drop-off on that outside part! What's your plan for that?

That'd also let you set up a landing with room under it for the gutter.

I would not plan on having that 90 degree bend there. That's just begging for even the slightest amount of debris to block it. Just having one 90 is bad enough, but there you're planning on two? I'd rather see a single 90 turned from the bottom of the downspout, with an access above it.

I don't know what the rest of the spaces around the old steps looks like, but I'm inclined to think you're going to be best off removing them and having wood ones that leave better room for the gutter.

kurtp2 09-02-2013 02:25 PM

The steps will be built up, and out to right, to match the landing at the level of the last step.

I will avoid the 90 that will place the conduit below the last step. I'll put in aluminium which can be serviced below the step. Thanks.


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