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Old 04-18-2010, 05:55 PM   #1
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wheel chair ramp


Im going to build a wheel chair ramp at a friends house and im not sure how to frame it out. What is confusing me is that that the door is only 12 or so off the concrete slab, so if i use 2x12 or 2x10 stringers plus some sort of decking on top, it doesn't leave any room for framing underneeth. So how should i go about framing it out? Ive never built one of these. And should i use treated 2x6's or plywood, or what for a deck? There is maybe 30' that this thing could be long, but it probably doesn't need to be anywhere near that because its only 12" rise

im attaching a drawing so you guys can understand what needs to happen.
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wheel chair ramp-wheelchair-ramp.jpg  

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Old 04-18-2010, 06:07 PM   #2
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wheel chair ramp


Max rise is 1" per foot for public access
So for 12" that equals 12'

http://www.newdisability.com/wheelchairramp.htm

1:16 or 1:20 is preferred...so 30' is a distance

http://www.mobility-advisor.com/whee...amp-specs.html

PT would be the best bet
or some other rot resistant wood

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Old 04-18-2010, 06:24 PM   #3
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wheel chair ramp


thats some good info


any idea of what to do underneath for the framing though?
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Old 04-18-2010, 06:32 PM   #4
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wheel chair ramp


The codes Scuba Dave referred to a ADA codes for public buildings--You are allowed to create a steeper rise for a residence.

The big question to ask your self is how capable is the person in the chair.

Think about the landing size also--will there be someone pushing? does the door swing out?

4 foot in front of the door works well.---Hope that helped.--Mike---

If you could post a picture of the existing porch area--I guarantee you will get several simple framing suggestions.

WillieT might even step in with his magic pencil!--M--

Last edited by oh'mike; 04-18-2010 at 06:36 PM.
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Old 04-18-2010, 06:45 PM   #5
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wheel chair ramp


You may not need any fancy framing--- you mentioned ripping long tri-angles out of treated 2x12s

That would work--and be efficient use of the boards.---See if you can get a shot or two of the work site.--Mike--
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Old 04-18-2010, 06:51 PM   #6
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wheel chair ramp


I would use PT decking, that will allow rain to run off
Rise will depend upon if someone will always be pushing the person
Being pushed 1:12 might work
Or if they will be wheeling themself up the ramp how strong they are
I see ramps being given away for free on Craigslist every now & then

Also, if you know of any ramps in the area check them out
Have the person wheel up the ramp or push them & see how it works
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Old 04-18-2010, 09:52 PM   #7
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wheel chair ramp


it will be used for being pushed up. The friends parents are old. Not the friend.


If i rip 2x12s to the angle i need. How do i attach them at the ground? Maybe i'll draw a pic of what im thinking for the landing side attaching to the ramp
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Old 04-18-2010, 09:58 PM   #8
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wheel chair ramp


"I would use PT decking, that will allow rain to run off" ----- only if you don't use any fasteners and waterproof it first. Be sure to use the correct fasteners. "Since it contains high levels of copper, ACQ-treated timber is five times more corrosive to common steel, according to test results. It is necessary to use double-galvanized or stainless steel fasteners in ACQ timber. Use of fasteners meeting or exceeding requirements for ASTM A 153 Class D meet the added requirements for fastener durability." From: http://en.wikipedia.org/wiki/Wood_preservation


"Does pressure-treated lumber need waterproofing?
Yes. Pressure-treated wood is pretreated with chemicals to prevent insect damage and rot. It is not waterproofed. The chemical treatment actually causes the lumber to dry out quicker and absorb more water than untreated lumber. When wood absorbs water, it swells. As the wood dries, it shrinks. These cycles cause wood to crack, warp and split - this is typically what is meant by "water damage." Thompson'sŪ WaterSealŪ brand offers the most powerful protection against water damage, guaranteed." From: http://www.thompsonswaterseal.com/advice/faq.cfm


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Old 04-18-2010, 10:48 PM   #9
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wheel chair ramp


A box frame attached to the house and 4X4 posts on the outside for the platform and handrail attachment. The same 4X4 posts on the ramp for support and to attach the hand rail. The platform close to the bottom of the door and the ramp at least 12' long. Use one inch PT decking boards leaving a gap for drainage.

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