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Details of 4’ x 8’ platform
Scale: 0.8” = 1 ft, or 0.1” = 1.5”
Details of platform at door
Scale: 0.8” = 1 ft, or 0.1” = 1.5”
Details of Ramp sections – top view
Scale 1” = 2’
Details of Ramp sections – front view
Scale 1” = 2’
Details of Bottom Ramp Section
Scale 0.8” = 1’
Materials:
The materials are listed in the Excel spreadsheet attached here:
[pic]
Notes:
1. All wood is pressure treated, AC2, arsenic-free.
2. Ramp has a 1 inch drop per foot of length.
3. Deck at door is 4½’ x 6’ instead of 5’ x 5’ to allow ramp to fit on existing concrete pad.
4. Existing metal steps and porch are to be removed. It may be possible to re-build those metal steps to provide step access to the street side of the deck at the doorway. In such case, a re-design of the rail for that deck would be needed. The code governing such a design has not been investigated, and it has been assumed that the existing steps will be discarded.
5. 4 x 4 posts, except as noted on the drawings, are set on the concrete pad without attachment. One post is attached to the concrete pad with anchors, and five posts are supported by concrete piers set on the soil. No posts are set into holes in the ground.
6. Estimated costs are based on prices at Menards in August, 2004. “Normal” prices are used in all calculations. Where materials were “on sale” at Menards in August, the sale price is shown in the comments.
7. Approximately 37 feet of ramp framing, 2 4x4 posts, 146 rail spindles, 1,200 deck screws, 112 linear feet of 2 x 4s, and 473 linear feet of deck boards are material re-used from the deck removed from the Willingham residence in Marion. This will use most of the deck boards and all of the 2 x 4s.
8. Spindles are used between the railing and toe board on the two decks and the upper ramp section, to provide an enclosed railing for all parts of the ramp higher than 30” off the ground.
9. Spindles are not called out for the railing of the lower ramp section. They are not required. However, they could be installed on the front rail for aesthetic purposes, if desired. It would require about 55 additional spindles, which are available from the salvaged material.
10. The rail spindles in this design are 35” tall. 7” will need to be cut off from each of the salvaged spindles.
11. Skirting for the ramp and decks was not identified or included in the cost estimate. It is assumed that the same material that was used around the home will be used.
12. Costs to deliver materials are not included, and are expected to be about $35 per trip.
13. Undercoat and Paint have been included in the cost estimate. To meet code requirements, silica sand should be added to the paint so the ramp will not be slippery when wet.
Handrail Detail
-----------------------
Existing metal steps, re-built if possible.
Platform set on 6 concrete piers
4’ x 8’ level platform
at 24” height
Page 3
160” ( end of pad to edge of door)
54” x 72” level deck at 42.75” height
Page 4
Existing concrete pad
All posts except turn platform set on existing concrete pad
106.0”
170.75” (to edge of door)
87.0”
42” ramp x 24’
Pages 5, 6, & 7
Concrete Parking
42” Ramp x 18’
Pages 5 & 6
32” door
160” ( end of pad to edge of door)
Existing steps
Existing metal steps, resting on pad, not attached
42.75” to bottom of threshold
43.0” to bottom of screen door
106.0”
170.75” (to edge of door)
87.0”
276.5”
Concrete Parking
Concrete Pad
Norma Street
Lamp
Bush
32” door
Mobile Home
200 Norma Street S. W.
Current Arrangement
Mobile Home
200 Norma Street S. W.
Proposed Ramp Configuration
Note: Deck at door is 4½’ x 6’ instead of 5’ x 5’ to allow ramp to fit on existing concrete pad.
2 x 6 x 48, on approx 16” centers, mounted with rafter hangers (5)
2 x 6 x 48 end and middle pieces bolted to posts with (2) 3/8 x 6 carriage bolts (3). Locate middle piece to avoid interference with center post.
2 x 6 x 96, bolt to posts with (2) 3/8 x 6 carriage bolts (2)
5/4 x 6 x 96 decking installed with approx. 1/8” gap between boards with 2 ½ deck screws. Sides of boards butt against posts – no need to cover space between posts
The lower ramp section is not screwed or bolted to any posts. The ramp is held in place only by gravity and screws connecting it to the 2 x 6s of the adjacent section of ramp.
Top of deck-support rafters to be 22 ¾” above ground, so top of deck is at 24”.
4 x 4 post, top of post to be 59” above ground (5)
Concrete pier (5)
2 x 4 x 42 handrail (2) and 2 x 4 x 48 toe board (2)
2 x 4 x 93 handrail and 2 x 4 x 93 toe board
(top board of handrail not shown)
2 x 4 x 18¾” brace secured with 3½” screws (2 places)
Approx. 1 foot to home
35” spindles at 4“ spacing on front, right, back left
Mount this post to the concrete slab using a boltdown post support and ½ x 4¼ concrete wedge anchors in ½” holes drilled into the concrete slab.
2 x4 handrail and 2 x 4 toe board
4 x 4 post
2 x 6 x 51 installed with approx 18 1/8” spacing, attached with rafter hangers (3)
4 x 4 post (7), top of 6 posts to be 77 3/4” above ground
Top of deck-support rafters to be 41 1/2” above ground, so top of deck is at 42 3/4”.
35” spindles at 4“ spacing on front, back, and left
5/4 x 6 x 75 decking installed with approx. 1/8” gap between boards with 2 ½ deck screws.
2 x 6 x 72, bolt to posts with (2) 3/8 x 6 carriage bolts
35” spindles at 4“ spacing on both sides of upper ramp
2 x 6 x 57 bolted to posts with (2) 3/8 x 6 carriage bolts (2)
2 x 4 diagonal braces on four sides, mounted to insides of posts. One brace per side, with opposite sides braced in the opposite directions.
2 x 4 screwed to deck side of posts with 3 ½” deck screws
5/4 x 6 deck board screwed to posts and 2 x4 with 2 ½” deck screws
Spindles are not included in the front railing of the lower ramp, but could be added.
Spindles are not included in the rear railing of the lower ramp, as they are not needed and would be very difficult to install. The rear railing of the lower ramp is a simple 2 x 6 handrail.
Edge of deck 51” from edge of concrete pad
Deck frame removed from 29th Avenue, Marion, rebuilt to length of 219” (18’ 3”), mounted to posts with two 3/8 x 6” carriage bolts and to platforms with three 3/8 x 4” carriage bolts plus 2½” screws
Edge of
4’ x 8’ turn platform
Edge of platform at door
Railing on both sides of upper ramp and exposed side of lower ramp from 5/4 x 6 top board and 2 x 4 rail board, per detail.
2 x 4 toe board along both sides of both upper and lower ramp.
Railings only partially shown.
Railing on house side of lower ramp (partially shown) is 5/4 x 6 deck rail screwed to posts.
Cover all visible open areas below the deck boards with skirt material as used on the home. Use 2 x 4 stringers near ground level as needed to support the bottom of the skirting.
Cross-brace between posts as shown by symbol using 2 x 4 lumber attached with 2½” screws.
2 x 6 x 94½” bolted to three posts with 2 - 3/8 x 6” carriage bolts per post
Cover all visible open areas below the deck boards with skirt material as used on the home.
Cover all visible open areas below the deck boards with skirt material as used on the home.
Bevel underside of last deck board to be flat with concrete, with edge thickness of 3/8”.
5/4 x 6 x 42 decking removed from 29th Avenue, Marion, installed with approx. 1/8” gap between boards with 2½” deck screws.
Below lowest cross-brace, 5/4 x 6 x 42” deck boards mounted to stringers using construction adhesive
4’ x 4” diagonal brace for post
2 x 6 x 18¾” brace secured with 3½” screws (4 places)
2 x 6’s joined using 2½” screws.
Above lowest cross-brace, 5/4 x 6 x deck boards mounted lengthwise, to match remainder of deck, with 2 ½” screws.
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