Craftsman Room Addition phase 3

This 30' glue-lam-beam probably weighs over 500 lbs.  We used a crane to set the two large beams, and it took all of about 20 minutes once the crane was set up.  That sure beats trying to muscle that beast into place!

Here Joaquin Anaya guides the beam into place.

With the beams set, Joaquin and myself quickly framed the roof, and then the ceiling joists.

There is a deep overhanging soffit on the west end, shown here. 

You can see the metal straps from the ridge beam down - this way the massive ridge beam is carrying part of the soffit - which is carrying part of the roof load in the near corner.  More about that with the next pic.

There was a little impromptu engineering required for this corner beam.  It wasn't addressed on the plans, so I had to put a little thought into this part of the framing.

I couldn't run the beam back any further, as a plumbing vent went right right up the wall into the attic - by the  time we drilled a 3" hole through the beam, we would have compromised its structural integrity.

I had to come up with a structural solution to support the cantilevered beam, upon which sat the corner of the roof. My solution involved running a through-bolt (all-thread) to tie the beam to the double top plate, blocking at the stress point created by the corble (knee-brace), and providing plywood shear that runs from the beam above to the anchor bolt below. 

I followed this with a cantilevered soffit over the west end of the addition, which I bolted to the last rafter, so the load being carried by the corner beam is shared.

The last joist of the soffit closest to this corner sits tight against the rafters - so that any movement down on the cantilevered end would force the other end up - but it can't move up, as the rafters and the weight of the roof have it pinned in place.

It may be overkill, but there was not a fraction of deflection, even when the concrete roof tiles were installed, and that's how I like it!