Jeff4au
Eufaula Alabama USA
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Joined: 06/18/2003
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I have an aluminum cover for my 5th wheel and the driveway under it is gravel I want to concrete it. Is 4" thick enough or does it need to be thicker?
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Crazy Ray
Monroe,La
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I made mine 6 , footing 12
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Ranger Smith
Wherever the rig is parked
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When I built my RV park I used 2x6 for concrete forms with rebar. That should suffice. I think a 4" pad may be a bit shy. But I am not a concrete expert
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larry barnhart
wenatchee. wa usa
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I made ours 5" with steel rebar on 20" centers.
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Turbo Diesel Dude
Ocala,Fl
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Why don't you do a mono-lithic pour with 6" where the wheels roll and two in the middle. Re-inforce the wheel tracks with some rebar and you should be home free. Takes as much as just 4" thru out. JMHO
charles weidman
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Spyglass
Santa Fe, NM
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Joined: 10/13/2002
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First, evenly spread the gravel then thoroughly compact it with a jumping jack or rolling vibratory compactor. Then pour a 4" slab with 6X6 wire reinforcing mat. When pouring, use a concrete scoring tool to cut expansion joints at about 4'-8' on center in both directions. The secret is a good subgrade. My 11,000# Apenlite has not caused a single crack.
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pigman1
Delaware
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We poured a 4" floor wire reinforced for temperature (the wire doesn't add strength, only keeps it from cracking due to temp changes) and made it 8" under the wheel and jack parking positions. I previously had 16x16x8" thick poured concrete pads where the jacks landed on a dirt floor and did not have an issue. The solid floor sure makes it easy to do maintenance. We're at 35,000 pounds.
John
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Flyin Finn
Battle Ground, WA, USA
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6" is the common thickness. But you can do 4", as long as the sub grade is properly prepared (gravel or sand, well compacted, etc...), using re-bar, and also consider using stronger grade of concrete.
It is also important that the concrete is applied correctly (not adding too much water to the mix).
If you have a very heavy 5th wheel, I would recommend 6" thickness.
Finn
97 Silverado 2500HD Ext Cab 2WD 7.4L towing a 08 Rockwood 8281SS Fifth wheel
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cummins2014
Utah
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I am surprised to see people pouring that thick of concrete for a rv pad, mine is poured 4", 6 bag. My pad is 10 x 50 . Expansion joints 5 feet down the middle and 5 feet centers. No rebar, wire mesh, or other type of reinforcement . If you are compacted well under the pad you are good to go with 4" . My pad is nine years old gone thru 8 winters ( Utah ) no cracks or settling with a nearly 13k fifth wheel setting on it. Anything more than 4" is a waste of money and concrete.
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ryoung
Oregon
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For the fifth wheel you presently have, 4" thick is sufficient. But if you ever consider upgraging to a motorhome, you will most likely will crack it at that thickness. Always plan for the future. Another 2 inches will add 50% to the concrete cost, but should not add anything to the finishing costs depending on the grade.
ryoung
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