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Makes sense and very slick application. I have designed a flitch beam for this contractor before so I'll go this route too. Thanks for the input!

HouseBoy - thanks for the photos and input. Couple questions - since you used flitch beams up and down the hips, were they not rigid enough to eliminate the steel flat plates on top of the walls? Or are you not relying on it being that rigid? Also, I don't see bolts through the 2x boards on...

A vent-less fireplace did get brought up at the last meeting but was ultimately dismissed (can't remember why). But the homeowners also prefer the chimney look

Ah, I see what you're saying. Sounds like a pretty industrial/modern kind of look too, which I think the homeowners will apprecaite. And although the thrust goes out to the corners through the hip ridge beams, I should be able to tie everything together well enough to get the tension over to...

Hotrod - we discussed that option as well and the homeowner was OK with it but I don’t think it will work very well since they also want a ceiling fan in the middle of the room. Unless running the cable around the perimeter can resolve the thrust and act as my tension ties?

dhengr: That is a great point about not wanting/being allowed to bear on a masonry chimney. The contractor already wanted to ledger into the existing exterior brick wall for rafter bearing and told him he wasn't allowed to do that. Excellent idea of sliding the entire chimney out so that I...

Daywalker - that’s kind of what I’m thinking. It’s a small roof so I’m thinking the decking could resist the thrust or even use straps across the corners where the hips meet and get them into a couple jack rafters on each side. Then for good measure, beef up the corner connections and go ahead...

I am working on a relatively small (14'x14')sunroom style addition where the owner wants a 4-sided, pyramid hip roof with a vaulted ceiling on the interior and no ceiling joists. I was originally going to do the standard pyramid style wood roof framing and detail it to use the wall top plates...

Great point about using the plate instead of a the tube steel. I can get a 3 in^2 area by using a 1/2"x6" plate and that gets close to the area of the tube steel I want to use and the Ad^2 aspect is where I'm getting most of my increased moment of inertia. In terms of where the beam is, there...

HotRod - the joists are nailed to a nailer board which is fixed to the top of the steel beam and allows me to consider the compression flange braced. Additionally, this is in our kitchen/dining area and we've had 25-30 people in here at one time. So, even with the shims under the floor joists...

Ahh, right. That's exactly what I need. Thanks, JAE. And thanks for those links, Celt. Great information.

JAE - that's what I was thinking. It should be easy to set up an excel sheet to calculate the deflection, given "x" along the span. what I'm getting a little stuck on is this: I check the deflection at midpoint and say it's 1/4". Then I calculate the deflection of the beam just where the...

I am looking at finishing out my basement and have a W8 beam that is supported by the exterior concrete wall and (2) pipe columns. The total beam length is only 15', so I'm trying to remove the center pipe column. From a moment and shear strength standpoint, the W8 is still good, but...

Good thoughts on the frost heave - if I can't stop everything then there's no point in eliminating it at the front of the driveway. How much would you overexcavate? 12"? I'm not sure how I would get a trench drain to work in this situation. Simply because the top of the driveway is only 12"...

I am working on a project where a homeowner is installing a concrete driveway over a very small (~12" deep x 5' wide) ditch. The ditch runs around a cul-de-sac, between the asphalt paving and sidewalk and tapers up to each one. The remaining driveways currently have 6" corrugated plastic piping...

The material is 19/32" Plywood. I like the idea of flat blocking, but like Dave said, a leaky roof using nailing/screws is a bigger concern. And I'd rather not reduce the design of the building to meet the as-built condition.

sandman - that's what I'm thinking. I do like the A35 clip idea as a potential though. I'll explore that further. KootK - the contractor submitted a request to nail through the underside, which is no good. I agree that screwing through the roofing puts the roof above in jeopardy. There...

I have a contractor that has installed the roof and shingles on a 5 story apartment. However, they forgot to install the diaphragm blocking. Obviously, it's costly to rip the shingles off to be able to get the appropriate nailing through the sheathing into blocking below. Are there any...