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Likely less expensive than some elaborate reinforcing of the walls to cantilever over this area.

If your secondary framing is spanning one way (like rafters), then it's triangular and not trapezoidal. You'll have zero at one end, and half the length of the connected rafter at the other.

Underpinning, excavating the soft stuff and replacing with compacted fill, etc. If you still have options for changing the wall reinforcing, I'm guessing the wall isn't built, meaning the existing footing could be removed to excavate and fill if needed.

A lot would depend on the layout of the building and the construction type, as well as the limits of the soft soil. Is that masonry just a foundation stem wall with light frame above, or is it full height masonry? Given the size of the footing for a single story house, I'm guessing it's full...

You're welcome.

This is very common for tract home developers. Even those building semi custom for a specific client. I had a friend buy a very high end home - it was a spec home that they signed the contract on halfway through construction - they bought it based on very generic floor plans and some exterior...

@Said the Sky , it varies. In some cases, they simply don't. In other cases, they'll sub it to a local firm. My experience is in the US, so not sure how much of this is going to be applicable to you. Generally, we have three types of inspections: 1) Building official/Permit office...

I talked to 84 Lumber last month - our yard stocks 24' 2x10s and 2x12s, at least. Didn't ask about anything smaller.

One thing I've noticed is that purlin design has changed a lot in the last 20 to 30 years. I look at buildings that were built in the 90s, and the purlins are spanning 25' with zero bracing. The same design now has third point bracing. So on "older" designs it's important to be aware of this...

It's real, though. Saw a house here on the bay. Deck was built with HDG nails. There was a clear line on the deck where a portion of the building shielded the deck from salty spray off the water. The deck was only 5 or 10 years old, and the exposed portion had little red splotches at all the...

If only he knew helipad loading was the same as for his mother's living room...

@mferg318 for your last question, look at the FBD you drew. Solve for the reactions and shears in your diaphragm and see what it tells you.

Point load all day long. If it's flexible, the diaphragm deflection will be sufficient to dump the vast majority of it into the closest shear walls. If it's rigid, the point load will more accurately capture any local torsional effects at that level.

Thanks for proving my point? If only there were a debate; this would be a lot more interesting.

Nobody said you were. But a bunch of houses in the middle of a nearly 300,000 acre fire are far from indicative of "normal" fire conditions. Well. Fires are hot. So I'll give you that. Nowhere in the OP did they indicate anything had yielded. Based on the tone and wording, I'd bet TRAK...

So...you don't guarantee the foundation is destroyed?

So based on this single data point, you're going to say that all foundations are immediately useless if any part of the superstructure suffers fire damage?

Because they blew all their savings on the underpinning job and couldn't afford an attorney to go after the scum bag.

Good call. I flipped them around. Even so, I wouldn't mess with it. Under a hot tub could well be considered an extreme environment. Chlorine treatment in hot tubs is very common, and water splashes out and around all the time. Now if just sits there and is never used, maybe not a problem...

This. I don't like stiffeners very much because the connection is so often lags or through bolts down into wood below. So there's no room for stiffeners.