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01-31-2017, 08:55 PM
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#29
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Senior Member
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Well, based on all these replies I'd say I have a 50/50 chance that it will break (if you're an glass half empty kind of guy) or 50/50 chance it won't (if you're a glass half full type of guy).
Anyway, I like the idea of the plywood and I'm going to try that.
__________________
Tim
Leesburg, FL '07 American Tradition 40Z Cummins 400 ISL
Towing a '14 Honda CRV Both sold
2021 Vanleigh Beacon 41LKB 5th wheel
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02-01-2017, 08:44 AM
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#30
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Senior Member
Join Date: Feb 2011
Location: Snowbird - Waterford Mi and Citrus Springs Fl.
Posts: 3,609
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Um, the ply might work fine on blacktop, but I'd be holding my breath on concrete. Blacktop will give a little, letting that ply spread the load out accordingly. Concrete is not going to give you that luxury.....there's just not much flex available.
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1997 37' HR Endeavor, 275hp Cat, Freightliner
03 CR-V Blue Ox, Ready Brake
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02-01-2017, 09:01 AM
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#31
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Senior Member
Newmar Owners Club
Join Date: Jun 2012
Location: Spicewood Texas (West of Austin)
Posts: 4,576
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I poured my own driveways 20 years ago with no knowledge that I would ever drive a 43K diesel pusher on it. It was poured correctly per standard residential specs, but it has cracked on one edge. Cracks are not necessarily the death of all concrete. In fact nearly all concrete cracks at some point. As long as it doesn't buckle, the important thing is to use a good sealer on it to prevent water intrusion. Sakrete Self Leveling Sealer
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Scotty and Kristen, Airedales Wyatt and Belle Starr
2007 Newmar Mountain Aire 4528, 450 HP ISM, Allison
2024 Brinkley G4000
2022 F350 DRW King Ranch 4 x 4
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02-01-2017, 09:06 AM
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#32
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Senior Member
Join Date: Oct 2014
Location: Port Orchard, WA
Posts: 4,240
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If your concern is cracking at the edge (which is a valid concern), you MAY be able to excavate at the edge of the current slab, and for about 10 or so inches UNDER the current slap, lay re-bar in and fill with concrete. In effect, you will be creating a thickened edge slab for your existing driveway. At the same time, you might consider widening the parking pad/driveway from there to the street where you will be driving. I too have had experience with a motorhome on soft grass. It wasn't pleasant.
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Scot & Laura Kellersberger, U.S. Army (ret)
Newmar 4 wheel drive Dutch Star 3891, SOLD
Now RV'ing on the water in a Trawler!
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02-03-2017, 10:46 AM
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#33
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Senior Member
Fleetwood Owners Club Freightliner Owners Club
Join Date: Feb 2013
Posts: 1,579
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Quote:
Originally Posted by ahicks
Um, the ply might work fine on blacktop, but I'd be holding my breath on concrete. Blacktop will give a little, letting that ply spread the load out accordingly. Concrete is not going to give you that luxury.....there's just not much flex available.
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I agree that blacktop will flex more than concrete... but if he's going to try parking on his concrete anyway, the plywood WILL help to distribute the weight. Plywood and RV don't care what they are sitting on, and the laws of physics don't either. Now, using plywood may not be enough to prevent a crack in concrete, but it will reduce the odds.
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2013 Fleetwood Discovery 40G, Cummins ISL,Freightliner Chassis, Allison 3000.
2017 Ford F150 Lariat toad w/
Blue Ox Aventa tow bar and M&G Braking System
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02-03-2017, 01:01 PM
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#34
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Junior Member
Join Date: Jul 2014
Posts: 14
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One thing that will help is not lowering leveling jacks,
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02-04-2017, 12:22 AM
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#35
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Senior Member
Join Date: Jan 2006
Posts: 313
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In order to place a heavy vehicle, like a motorhome 20,000 to 45,000 lbs., on concrete originally built to common residential specs the weight has to be spread out and that is accomplished by an adequate plate. Plywood is far from the best choice for this for many reasons. The best choice is steel, .250 2GA 1/4 inch. should do it. It weighs nominally 10.5 pounds per square foot and a 4' x 8' sheet will be probably about $375 Getting it cut, delivered, placed will not be real costly. A metal dealer will help you figure out the square foot loads you need to deal with. It may sound like an expensive pain but it's a good, permanent way to beef up a residential concrete pad.
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2016 Pace Arrow LXE 38K
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02-04-2017, 04:43 AM
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#36
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Senior Member
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Using plywood, steel, or whatever where it is parked sounds good but what about the rest of the driveway where it is driven to, to park it. Are you saying the driveway is OK to be driven over but only needs support where it is parked?
__________________
Tim
Leesburg, FL '07 American Tradition 40Z Cummins 400 ISL
Towing a '14 Honda CRV Both sold
2021 Vanleigh Beacon 41LKB 5th wheel
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02-04-2017, 08:27 AM
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#37
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Senior Member
Join Date: Feb 2011
Location: Snowbird - Waterford Mi and Citrus Springs Fl.
Posts: 3,609
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Man, the eventual rust stains from the steel....
Tim, mine is broke only where the rear axle sits. Driving over the rest to get there doesn't seem to be an issue.
I think maybe just going for it and see what happens, with plans to deal with it accordingly when/if you get around to it, is likely a good one given the options. -Al
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1997 37' HR Endeavor, 275hp Cat, Freightliner
03 CR-V Blue Ox, Ready Brake
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02-04-2017, 10:13 AM
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#38
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Senior Member
Join Date: Jan 2006
Posts: 313
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Quote:
Originally Posted by timjet
Using plywood, steel, or whatever where it is parked sounds good but what about the rest of the driveway where it is driven to, to park it. Are you saying the driveway is OK to be driven over but only needs support where it is parked?
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transient rolling loads have a different effect than static loads. There is a lot to all this in the details but just consider that building parking lots and roadways are two different animals. for a driveway the location of static loads is the most challenging. (unless if something comes up and one needs to drive a 40 ton vehicle over it)
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2016 Pace Arrow LXE 38K
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02-04-2017, 10:25 AM
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#39
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Senior Member
Join Date: Jan 2006
Posts: 313
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Quote:
Originally Posted by ahicks
Man, the eventual rust stains from the steel....
Tim, mine is broke only where the rear axle sits. Driving over the rest to get there doesn't seem to be an issue.
I think maybe just going for it and see what happens, with plans to deal with it accordingly when/if you get around to it, is likely a good one given the options. -Al
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it is not a difficult thing to treat steel plate so the rust is not an issue. again, let your metal dealer explain. there are plenty of plate, especially diamond, constructs outside that have been in place many decades and done just fine.
__________________
2016 Pace Arrow LXE 38K
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