I have to bid a small addition – and it includes a handicap ramp. But no construction details whatsoever. So I have to design it, to bid it. Any suggestions?
CaliforniaRemodelingContractor.com
I have to bid a small addition – and it includes a handicap ramp. But no construction details whatsoever. So I have to design it, to bid it. Any suggestions?
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Replies
This will get you started:
http://www.mobility-advisor.com/wheelchair-ramp-specs.html
Main points - maximum slope is 1:12 , maximum rise is 30".
Minimum clear width = 36"
Landings are normally 60" x 60"
Railings have their own set of specs.
Thanks - I'm actually aware of the technical requirements, its the construction details that I need. i.e., is it made from wrought iron, wood 2x2's, exterior plywood, etc., etc.
I'm hoping someone has built one of these residential ramps, and has some pics or construction details to share.View Image “Good work costs much more than poor imitation or factory product” – Charles GreeneCaliforniaRemodelingContractor.com
OIC.
Well, the ones I have built used fairly normal deck construction techniques. The landings were small decks built on piers and posts with suitable framing members(normally PT) and treated or decay-resistant wood.
The ramps were the same, built like a bridge on an incline, 2xs on sloped stringers of treated wood.
Railings run the gamut, as long as they meet the design minimums, strong and simple are 2 x 2 'pickets' screwed to the stringer or deck band and to a top rail. I usually cut a double groove in an edgewise 2 x 6 for a top rail, the grooves make the rail graspable.
Sorry, I should have been taking pictures these 30+ years.
thanks, excellent suggestions, thats just what I needed!View Image “Good work costs much more than poor imitation or factory product” – Charles GreeneCaliforniaRemodelingContractor.com
Huck
The last 12" is hard to do well. It's hard to have sufficent strenght in the long taper of the framing and the same with the decking board.
I have used 1/4" aluminum diamond plate to make the transition from wood to concrete.
I usually cut a small rabbit in the last decking board to recieve the aluminum and anchor the plate to the concrete.
I usually run my joists the long way with the ramp and use a small beam or beams resting on piers or 4x4s at midway points.
Last couple of ramps have been low cost need to be done tomorrow. We have used treated plywood painted with SW foor enamel with shark skin additive.
Rich
Thanks, I've seen those plates before, and never understood how important they were. Also, how does the treated plywood (painted) hold up? Did you run it lengthwise, or crosswise? Any special treatment for the joints?
View Image “Good work costs much more than poor imitation or factory product” – Charles GreeneCaliforniaRemodelingContractor.com
Edited 9/17/2008 11:21 pm by Huck
Huck
I ran the plywood the long ways. Prepainted the plywood before we did the install and painted any raw edges.
Rich
A minimum slope on a barrier-free ramp? LOL - this is because if it gets too shallow the wheelchair just sits there and can't roll fast enough?
Jeff
I noticed that too...indicative of the quality of the "blueprints" - which have been approved by the county for permit!View Image “Good work costs much more than poor imitation or factory product” – Charles GreeneCaliforniaRemodelingContractor.com