Introduction
Job #1 - What Size?
Job #2 - Framework
Job #3 - Foundation
Job #4 - Walls
Job #5 - Roof
Job #6 - Doors
Appendix A
Appendix B
the Templates
Click here for the Homepage Ragnar's Eco-Cabin Weeb Site
Starplate
Goto the PREVIOUS Job Job #1 - What Size? Goto the NEXT Job

Strut Length Suggested Lumber Carriage Bolt Size
2-5 feet 2 x 2 5/16" x 2"
4-7 feet 2 x 3 5/16" x 3"
6-9 feet 2 x 4 5/16" x 4"
Chart 1 Framing Lumber Sizes

Estimating Size & Materials
Refer to chart 2 to see what rough measurements your frame can have. This chart can be a guide to help you figure your material costs. It is only approximate; don't use it for exact dimensions.

To pick exact dimensions use the formulas in Appendix B.

Strength Considerations - Snow Load
Tests on 2x4 STARPLATE Frames roofed with plywood and supported on a solid base (Job #3, Option #2, #3 or #4) indicate that the structures can withstand a total roof load of 10,000 lbs. (Weight of roof and snow combined.) At this point, the STARPLATE Connectors begin to bend. Divide 10,000 lbs. by your particular total roof area to get an approximate capacity in pounds per square foot. Stress at the connector plates varies in different buildings and depends greatly on Construction materials, t???te?ing techniques, and age of building. While the manufacturer believes these tests to be accurate, because of variable lumber grades and conditions in particular installations, it is impossible to warrant this full-level of structural strength for each plate. Therefore, prudent designers commonly allow a safety margin to insure structural strength. Check with local codes for requirements and safety factors in your ares. For unusual load requirements, contact East West Design Inc. with your questions.

  height
ft.
enclosed
volume
ft.3
floor
diameter
ft.
floor
area
ft.2
individual
triangle
area
ft.2
wall
area 10
triangles
ft.2
roof
area 5
triangles
ft.2
height of
each
triangle
ft.
total
strut
length
ft.
individual
strut
length
ft.
 
3 15 3 16 3/4 1 3/4 17 1/4 8 3/4 1 3/4 50 2 Dog House
4 1/4 51 4 1/2 15 1/2 4 39 19 1/2 2 1/2 75 3  
5 3/4 120 6 27 1/2 7 69 34 3/4 3 1/2 100 4 Playhouse
7 1/4 235 7 3/4 43 11 108 54 4 1/4 125 5 Small Shed
8 1/2 406 9 62 15 1/2 156 78 5 150 6 Medium Shed
10 645 10 3/4 84 21 1/2 212 106 6 175 7 Large Shed
11 1/2 963 12 110 28 277 139 7 200 8  
13 1371 14 140 35 350 175 7 3/4 225 9 Small Cabin
  H   D B A     h   S  

Approximate Size & Material Estimator

Chart 2

STRUTS OVER 9' ARE NOT RECOMMENDED

Ragnar Note:
More to come soon

Go to Ragnar's Weeb Page
Click to E-Mail   © Ragnar Torfason
2013 June 18