[Strawbale] Round Wooden Top Plate
ArchiLogic at yahoo...
Wed Mar 21 22:15:58 CET 2007
A round building would (should) have constant radii of curvatures so that
2.4 m long curve template for the inner and outer radii can be used to
set up/check the proper curvature at any point of the foundation, SB walls
or top plate.
With conventional buildings (ie wood, masonry) a curvature template cut
from a piece of plywood is typically used .
In the case of a SB wall, where a box beam is often used for the top
plate, the curvature template/bending jig (for bending the 19mm thick cord
lamiations) would simply be the "waste" portion of the OSB or plywood from
which the curved webs of the box beam are cut.
Some triangular brackets made of short stubs of 38 x 64 or 38 x 89 mm
lumber + scraps of ply or OSB can be attached to the curvature template at
points along the edge, say 600mm apart, against which the 19mm lumber can
pulled/bent, using woodworkers clamps.
The process would be to butter the faces of the lumber to be laminated
with glue, then clamp them against the bending jig and then drive in a few
screws (inexpensive drywall screws are fine) to hold the laminations
together until the glue sets, freeing up the clamps to be used on the next
=== * ===
Kanata, Ontario, Canada
<A r c h i L o g i c at c h a f f y a h o o dot c a >
winnow the chaff from my edress in your reply
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