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Old 05-19-2013, 09:04 AM   #1
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Winnebago Owners Club
Join Date: Mar 2013
Location: Arizona
Posts: 649
Water Main and Drain Under RV Driveway

I'm getting ready to use granite for my RV driveway and parking area based on recommendations from the pros and conversations here. My landscaper is concerned because the water main crosses the area, and we want to extend a sewer pipe across the drive to use as a dump station. The RV will not be parked over either pipes, but will drive across them.
Do I need to reinforce the area along the water main? How deep should the sewer extension pipe be? The soil here is caliche/sand typical of Arizona. Obviously it's usually very dry.

Joseph and Sandy
Arizona Sunbirds

(Snowbirds in Reverse)
Winnebago Chieftain / Ford Hybrid Toad
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Old 05-19-2013, 09:40 AM   #2
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Fleetwood Owners Club
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18" and you should be fine. Compacted crushed granite is a stable base.

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Old 05-19-2013, 01:57 PM   #3
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If 18 you should be fine, but you need down slope for drain.

If you know where the utilities area you could consider removing some dirt to make a bridge area above them, dumpa couple sacks of concrete and set it down, mix in place and level with a 2 x 4, toss some rebar if you have it, only needs to be couple inches thick and below your base.

This will insure load is spread out to avoid compression.
Tony & Lori
1989 Country Coach Savannah SE
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