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07-05-2017, 01:51 PM
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#1
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Member
Join Date: Sep 2016
Posts: 83
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Driveway angle vs. rear overhang
Hey everyone...
My wife and I are currently building a new home in a subdivision that will have RV parking on the side next to the garage. Based on current grading for the front driveway, it looks like I'll have a bit of "hill" to drive up to get to the RV space. I don't think it'll be a problem but I'm a tiny bit concerned that my rig is so long that the back will scrape the street - or worse, the hitch will bottom out - before the rig clears the "hill."
Is there a mathematical formula I can use to determine how much of an angle I can climb without scraping the back? I'd like to be able to measure it first without damaging the street or my rig... that way if we need to regrade the drive we can.
Any help would be greatly appreciated Thanks!
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The DIRTY ROTTEN RACKLEFRACK! 2004 Newmar Mountain Aire 4302 Not a new member, just a new profile: Wryly Blithe
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07-05-2017, 01:57 PM
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#2
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Senior Member
Newmar Owners Club Freightliner Owners Club
Join Date: Jul 2016
Location: Fulltime since ‘16
Posts: 2,624
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Following. It's like a high school geometry problem. I'm waiting to cheat off the smart kids answer :-)
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CC, Paul, & puppy Leap (ACD)
'17 DSDP4018, Wrangler toad
[SIGPIC][/SIGPIC]
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07-05-2017, 01:59 PM
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#3
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Member
Join Date: Sep 2016
Posts: 83
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Quote:
Originally Posted by Stripe34
Following. It's like a high school geometry problem. I'm waiting to cheat off the smart kids answer :-)
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lol... exactly!
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The DIRTY ROTTEN RACKLEFRACK! 2004 Newmar Mountain Aire 4302 Not a new member, just a new profile: Wryly Blithe
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07-05-2017, 02:03 PM
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#4
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Senior Member
Join Date: Aug 2008
Location: Georgia
Posts: 8,638
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Back in if it drags more grading needed the only sure way.
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2007 Fleetwood Revolution LE 40V
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07-05-2017, 02:10 PM
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#5
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Member
Join Date: Sep 2016
Posts: 83
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Quote:
Originally Posted by Tha_Rooster
Back in if it drags more grading needed the only sure way.
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Hmmm... is there an "un" sure way, cuz that doesn't sound very practical
__________________
The DIRTY ROTTEN RACKLEFRACK! 2004 Newmar Mountain Aire 4302 Not a new member, just a new profile: Wryly Blithe
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07-05-2017, 02:25 PM
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#6
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Senior Member
Join Date: Mar 2013
Location: The Evergreen State
Posts: 543
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Quote:
Originally Posted by Racklefrack
Hey everyone...
My wife and I are currently building a new home in a subdivision that will have RV parking on the side next to the garage. Based on current grading for the front driveway, it looks like I'll have a bit of "hill" to drive up to get to the RV space. I don't think it'll be a problem but I'm a tiny bit concerned that my rig is so long that the back will scrape the street - or worse, the hitch will bottom out - before the rig clears the "hill."
Is there a mathematical formula I can use to determine how much of an angle I can climb without scraping the back? I'd like to be able to measure it first without damaging the street or my rig... that way if we need to regrade the drive we can.
Any help would be greatly appreciated Thanks!
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Maybe forward your questions to the contractor. Hopefully the side of the garage where the RV will be park is level and be terrific if full hook-up is available. Good to plan ahead.
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1996 34'J Fleetwood Bounder, Chevy 454 TBI P-32, Bank PowerPack, Ultra Power Chip, BellCranks, Rear Trac Bar, Silver Safe-T-Plus and 04 CR-V Toad, Roadmaster Base Plate and All Terain Tow Bar, SMI Stay-In-Play DUO.
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07-05-2017, 02:31 PM
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#7
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Senior Member
Entegra Owners Club
Join Date: Nov 2012
Posts: 8,149
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You could take the dimensions to your local high school geometry teacher who could likely figure it out mathematically. The problem is you would need precise height measurement of your driveway, street and curb which might be difficult to measure with precision.
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Marc and Jill, Wellington FL
2013 Entegra Anthem 44SL
2018 Lincoln MKX
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07-05-2017, 02:34 PM
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#8
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Senior Member
Winnebago Owners Club Freightliner Owners Club
Join Date: Oct 2009
Location: E WA or S TX
Posts: 4,059
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04 Horizon QD, 12 Ford Flex, Excalibar, Brakemaster, Winter Texan, RVin! since 1974
Norm, Donna & Tinker Kat(RIP) 01 Z3
Life is a Timed Event, you only get One Go Around!
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07-05-2017, 02:35 PM
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#9
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Senior Member
Winnebago Owners Club
Join Date: Mar 2014
Posts: 14,891
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Just thinking out loud. Take a string line and stretch it (tight) between the bottom of the front tires and the bottom of the hitch (measure the height of the hitch and set a wood block at the side to support the string) along the side of the coach. The distance from the ground to the string beside your rear tires is the maximum depth you can have before the hitch will touch. (mark the string where the front tires, hitch and rear tires are).
Stretch the string on the driveway. If the depth is less than measured on the mark you should be good. Try the string in several places.
This will also depend upon having the same weight and loading in the coach.
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Gordon and Janet
Tour 42QD/InTech Stacker
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07-05-2017, 03:49 PM
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#10
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Moderator Emeritus
Monaco Owners Club Texas Boomers Club
Join Date: Nov 2015
Location: Central Texas
Posts: 13,426
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You can calculate it using trigonometry, but I wouldn't trust the calculation because it would assume the street is perfectly level and the driveway is perfectly flat and both are unlikely. Here's a link to a rise and run calculator which might be useful to you. Put in the run -- the length of the portion of the drive you are worried about, and the pitch angle (2/12, 4/12, 6/12 etc.) and it will calculate the degree of the angle for you.
https://www.blocklayer.com/riserun.aspx
You can use that angle with the information from rgvtexan to calculate the departure angle of your coach and the approximate angle of your driveway it will tolerate.
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Dennis and Katherine
2000 Monaco Dynasty
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07-05-2017, 05:22 PM
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#11
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Senior Member
Winnebago Owners Club Ford Super Duty Owner
Join Date: May 2016
Posts: 120
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I am a simple person. I would measure from the center of the back wheel to the back bumper and then measure from the ground to the bottom of the bumper. Take a 2"x4" and zip tie it to the back bumper using the frame for leverage so that you can approximate the distance behind the axle and the height. Then have at it. Either it will scrape or not.
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In the fields of observation, chance favors only the well caffeinated mind.
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07-05-2017, 05:30 PM
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#12
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Senior Member
Join Date: Nov 2015
Posts: 1,565
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What's the length of the overhang and the angle of the driveway?
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07-05-2017, 05:36 PM
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#13
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Senior Member
Join Date: Aug 2008
Location: Georgia
Posts: 8,638
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Driveway angle vs. rear overhang
Quote:
Originally Posted by Racklefrack
Hmmm... is there an "un" sure way, cuz that doesn't sound very practical
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How about measure from your back wheel to bumper and from the ground to lowest spot to determine the degree of angle.
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2007 Fleetwood Revolution LE 40V
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07-05-2017, 05:40 PM
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#14
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Senior Member
Damon Owners Club
Join Date: Dec 2013
Location: GA
Posts: 196
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Dumb question since I figured you have already checked but does the subdivision covenant allow you to park a motorhome in your driveway? Most don't including boats, campers or trailers of any kind.
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2018 Winnebago Aspect 30J
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