Framing--the Backbone of your Log CabinFraming is
structural skeleton of your house. The drawing at
top indicates
important framing members of any of
cottages. The most important elements are
sill, header, joists, girders, sole, flooring, studs, plate, and rafters. Let's take a look at these parts.
Except in
case of concrete slab construction,
sill is
first wood member to rest on
foundations and will be
first wood member you will put down. The sill is usually a 2-by-4-inch piece. In pier construction you will note that I have occasionally used a 2-by-6-inch member. This is because
header is made up of two pieces 2 inches thick, instead of one, as shown in
illustration.
Sills form a bearing surface for
undersides of joists. They should be bolted to
slab or wall foundations. If you are using pier foundations, it is important that you first put down
sill around
building, then spike
inner header to
sill from
underside. After this is done, lay out
joists and securely spike
inner header to them.
At
corners, stagger these two parts. Then spike
outer header to
inner one, overlapping at
staggered corner edge. What you have done is to build a girder with a resting place for
joists.
Headers, except as noted above, are usually 2 inches thick and
same width as
joists. They run around
outside perimeter of
building and help keep
joists in a vertical position. They also help to transmit
roof and wall loads to
foundation.
The notched joist arrangement is used when no sill is provided. The blocking provides a bearing spot for
joists. If you use pier foundations, be sure to follow
sectional drawings for each cottage, because this header may actually be a girder around
outside of
building.