|
|
07-16-2019, 07:22 PM
|
#15
|
Senior Member
Join Date: Nov 2017
Location: Oakhurst, CA
Posts: 915
|
I don't know your sizes but you could consider a mixed bag. Pour a 6" in the center where wheels run and 4" on the sides. I would also double the rebar and see if you can find a specification for your weights to follow.
__________________
2007 Country Coach Tribute 260 Sequoia
40' DP w/Cat400, F494513, Lithium Battery & Solar
Live next to Yosemite
|
|
|
|
Join the #1 RV Forum Today - It's Totally Free!
iRV2.com RV Community - Are you about to start a new improvement on your RV or need some help with some maintenance? Do you need advice on what products to buy? Or maybe you can give others some advice? No matter where you fit in you'll find that iRV2 is a great community to join. Best of all it's totally FREE!
You are currently viewing our boards as a guest so you have limited access to our community. Please take the time to register and you will gain a lot of great new features including; the ability to participate in discussions, network with other RV owners, see fewer ads, upload photographs, create an RV blog, send private messages and so much, much more!
|
07-16-2019, 07:24 PM
|
#16
|
Senior Member
Freightliner Owners Club
Join Date: Aug 2008
Location: Florida Keys
Posts: 2,687
|
In case you REALLY want to get into the calculations:
https://www.buildingsguide.com/calcu...ctural/FCSGSG/
__________________
Tom and Katharine
'07 Winnebago Tour 40TD, 400hp Cummins
'17 Winnebago View 24V, '02 R-Vision B+
RVing for 20 years & 200,000+ miles
|
|
|
07-16-2019, 08:07 PM
|
#17
|
Senior Member
Join Date: Feb 2018
Location: Indiana
Posts: 127
|
Our coach is 50,000 lbs. We built our garage 7 years ago with 4” concrete and we don’t have any cracks whatsoever.
__________________
Hoosier14
Prevost, 45’, DD Series 60
Country Coach Conversion
|
|
|
07-16-2019, 08:26 PM
|
#18
|
Senior Member
Join Date: Aug 2011
Posts: 693
|
If you are getting quotes you will see it is not much more in cost to go from 4" to 6".
__________________
GRV We love to Roam
2013 Georgetown
2022 ENTEGRA - EMBLEM - 36T
|
|
|
07-16-2019, 08:53 PM
|
#19
|
Senior Member
Join Date: Jul 2015
Location: Watertown NY USA
Posts: 6,440
|
What is under the concrete is as important as the thickness of the concrete. In fact the ground under the concrete will dictate the thickness of the concrete and how much rebar and or mesh is used.
My pole barn floor is 6" deep fiberglass reinforced concrete and the outside footer is 12" deep and 24" wide tapering to 6" for the main floor.
Grindstone 01 made a good point. Have the floor finished with a power floating screed to get the floor as smooth as possible. The broom finish is for those who don't know how to finish concrete or are too lazy to do the job right.
There are contractors out there who specialize in doing concrete work. I would suggest you hire one and get it done right the first time.
Lynn
__________________
2002 Fleetwood Storm 30H on Workhorse P32 chassis 8.1 gas.
|
|
|
07-16-2019, 09:33 PM
|
#20
|
Senior Member
Join Date: Dec 2017
Location: Sacramento, California
Posts: 1,402
|
Make sure they use a 5 sack mix, not 4 sack. Contractors are known to pour the cheaper 4 sack mix and pocket the extra money. 4 sack concrete will NOT be able to handle the weight.
|
|
|
07-16-2019, 10:12 PM
|
#21
|
Senior Member
Join Date: Mar 2019
Posts: 5,651
|
I just had my driveway widened by 10' to hold a 22,000 motorhome. I set the spec at 30,000 pounds and 6". The concrete guy felt better at 7" and with fiber added. I asked for rebar and wire mesh as well. This raised the price about a thousand dollars for a 94' driveway.
So now where I screwed up. I did not do enough research to know that the rebar and wire mesh should be on "chairs" and positioned in the middle of the pour. The wire mesh is at the bottom lying on the gravel base so that was a waste of money. They pulled the rebar up during the pour to get it more to the center but I should have had them double the amount they used. The chairs would have assured center vertical positioning. Pulling it up manually is marginal at best for assuring proper positioning.
Since the rebar and wire mesh's job is to hold things together in the event a crack occurs they really need to be as close to the center vertically as possible. Some people say you do not need wire mesh or rebar if you use fiber but I just felt better having it added.
He used a six and a half sack pour which he said is 4,500 psi. We waited the full 28 days even though he used additives to retain the water and said we could use it after 14 days.
As someone else noted, the base (what is under the concrete) is the most important part. Your soil composition and weather (do you have freezing weather or not, is it hard or sandy, etc.) all play a part in how the base is designed. If the base is poor it doesn't really matter how thick the concrete is. Adding more concrete can deform the ground under the concrete more.
Ray
__________________
2020 Forest River Georgetown GT5 34H5
2020 Equinox Premier AWD 2.0L/9-speed
|
|
|
07-16-2019, 11:09 PM
|
#22
|
Member
Holiday Rambler Owners Club
Join Date: Oct 2005
Location: Vernon, BC Canada
Posts: 83
|
That's heavy for a non tag MH!
__________________
Pete & Terry (Teresa) Cira 12lb furbag
2007 Holiday Rambler Endeavor 40 SKQ, Cummins ISL 400/1200, Allison 3000
2017 Chev Equinox V6 AWD, Blue Ox Avail, Patriot II brake controller
|
|
|
07-16-2019, 11:20 PM
|
#23
|
Senior Member
Join Date: Aug 2016
Posts: 503
|
I went 6-8” for my MH and two 4 post lifts for hot rods. Shops been done for 3 years and no problems yet.
__________________
2007 Renegade Classic
2002 Eagle Cap
1999 Tiffin Allegro (sold)
|
|
|
07-17-2019, 05:54 AM
|
#24
|
Senior Member
Join Date: Jul 2015
Location: Watertown NY USA
Posts: 6,440
|
Quote:
Originally Posted by sinterior
That's heavy for a non tag MH!
|
His next MH might be. Better to over build than be disappointed later.
__________________
2002 Fleetwood Storm 30H on Workhorse P32 chassis 8.1 gas.
|
|
|
07-17-2019, 08:14 AM
|
#25
|
Senior Member
Join Date: Feb 2013
Location: Sedona, AZ
Posts: 2,993
|
Quote:
Originally Posted by Unicorn Driver
Just did a pad for my 23000lb coach. Contractor poured 5 inches with rebar mesh.
|
My contractor swore that 4 inch was plenty after good site compaction and floated rebar. Haven't had a crack in two years with 22K motorhome.
__________________
Shell Bleiweiss
2014 1/2 Thor Challenger 37KT
Sedona, AZ
|
|
|
07-17-2019, 08:36 AM
|
#26
|
Senior Member
Join Date: Jan 2018
Posts: 3,009
|
There's a cautionary tale regarding the importance of proper soils engineering in what happened this past week to US Hwy 36 eastbound between Denver and Boulder. The road was rebuilt and paved with concrete just a year or so ago. A nearby huge shopping mall development has terrible washboard roads which aren't too bad in a car but it's like riding a bucking bronco driving a big Class A, a city bus or a school bus.
https://www.thedenverchannel.com/new...eps-in-rebuild
__________________
2005 Monaco Knight 40PLQ; Cummins 8.3L ISC330, Pacbrake, Allison 3000, Roadmaster RR8R, ScanGauge D, 2004 Kawasaki Vulcan VN750(Geezer Glide) on a Versahaul carrier pulling a 2013 Kia Soul+; 2.0L, 6 speed Sport shifter(great car) on an American Car Dolly(great dolly.)
|
|
|
07-17-2019, 08:44 AM
|
#27
|
Senior Member
Monaco Owners Club
Join Date: Aug 2017
Location: Orlando, Florida
Posts: 5,819
|
I have 6" slab with no base (poured directly on to FL soil) done before I even thought I would ever own an RV. It was fine for cars/pickup for ten years, but cracked under weight of my RV.
You want 6 inches of "compacted base material", then your 4 (reinforced) or 6 inches of concrete.
|
|
|
07-17-2019, 08:56 AM
|
#28
|
Senior Member
Country Coach Owners Club Solo Rvers Club iRV2 No Limits Club
Join Date: May 2011
Location: Vancouver, WA
Posts: 37,725
|
What ever you do plan for the future! I originally used the grass blocks in my yard to park my 23'TT and then 17' Type B MH. Now I have a 45', 52,000# MH. The blocks have long ago turned to rubble as has my standard contractor grade driveway slab.
__________________
2009 45' Magna 630 w/Cummins ISX 650 HP/1950 Lbs Ft, HWH Active Air
Charter Good Sam Lifetime Member, FMCA,
RV'ing since 1957, NRA Benefactor Life, towing '21 Jeep JLU Rubicon Ecodiesel
|
|
|
|
|
Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
|
|
Thread Tools |
Search this Thread |
|
|
Display Modes |
Linear Mode
|
Posting Rules
|
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts
HTML code is Off
|
|
|
|
» Recent Discussions |
|
|
|
|
|
|
|
|
|
|
|
|
|