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Hello all, looking for some advice on a project that just came up using the hambro floor system in a 2 story residential home. Contractor wants to add a home lift (elevator) starting on the main-floor up through the second floor (require coring through the 3" concrete composite slab). The lift...

Hello all, I have been requested by the architect to provide a detail for a concrete fire wall that spans about 37' ft above slab on grade (43' to top of footing) This will be a non-load bearing wall in terms of gravity loading and will not be connected to adjacent structure on either side...

Hello, I've been asked to review and stamp the structural drawings portion of an architectural drawing package, it was requested from a architectural design firm for custom homes, in our jurisdiction architects are allowed to design structural elements provided they have the expertise, and...

Hello, client requests that the door be raised up to underside of wall top plate and hence we cannot have a header between the top plate and top of door, the truss is cantilevered quite a big distance past the door, looks to be about 6ft (is this normal?) proposed solution with beam and...

so I have a situation where the lintel was damaged by a truck and we had to fix it. upon completion and pictures from the contractor it shows both ends of the lintel has no bearing nor running bond, I tried a angle ledger to provide this support but I can't seem to get it to pass in terms of...

In the attached picture - is the strap at the ridge meant for unbalanced loading? what is the reason to spec both hangers (that has uplift capacity) and a strap? I always thought it was either have a "collar tie" within 1/3 distance from the ridge or have a strap or special connectors that have...

so recently I had a client hire me because her house burn down and the insurance company had their own engineer (internal, not third party) come out and inspect the concrete foundation to determine if it was structurally sound to rebuild on top of again, she wanted me to refute the internal...

So where I am from the base building engineer for a multi storey regular stickframe building may or may not specify engineered wood beams (LVL, PSL etc), for the most part we "try" to coordinate with the supplier designer with them providing us their shop drawings and we take care of the total...

hello, I have an existing house that the owner wants to extend (it is the area with the red rafters). Another thing is due to truss manufacterers sipply chain issues the owner doesn't want to wait for months out for trusses. So he requested to do "A" framing using rafters and ceiling joist as...

Hi guys I have a client that requested me to design his trusses (typically I don't do this as I am a base building guy) so I went through other threads regarding rafter tie design, and was wondering if anybody knows why in SAP2000 if I model the two supports as just rollers (only resisting...

Hello - I have a attached garage that is unheated (or is it considered heated to a certain extent as we are attached to the main home?) and we are in frost susceptible soils (silty clays) with frost depth in the area to be around 4' dp. My question would be: do we require the floating slab on...

Hello all, would you guys specify battered piles at the ends for lateral load transfer into soil using screw piles? or would the lateral load be transfered into the grade beam that is perpedicular to the lateral load? (concrete grade beam is pushing against the soil, spanning horizontally and...

Hello, I have a 30 year old custom home renovation, was cast with concrete foundation, likely typical 8" wide concrete walls on strip footing, however I don't know the size of the footings and no drawings available, nor bearing pressures, however we can get some tests done to verify this. The...

Hello all, can anybody explain to me how 9.23.6.1 sentence 2c provides any anchorage into a 8" wide foundation wall for a home. We qualify as low wind and low seismic area, however I can't figure out how 2c could be subsituted in place of 2b (1/2" anchor bolts spaced at 2.4m O/C into concrete...

Hello all,(and specifically Canadian engineers!) say we have a gabled roof house and it is sloped approximately 1:3 pitch with a metal roof. The slope direction corresponds to a deck on one side and on the other side just open field. So my question is, is the deck considered a lower roof and...

Hello, is anybody familiar with how to arrive at a windspeed km/hr or mph with a corresponding wind pressure? The NBCC, National Building Code of Canada, for example a building that satisfies the use of diagram I-7 (most low storey buildings). The wind pressure is specified. I am trying to find...

Hello gentlemen, Background on the building: Foundation appears to be concrete wall perimeter about 4ft high, should be on strip footings, SOG. Building used as “agricultural” purposes. The building has since have a partial collapsed in high winds and high snow loading (2.5ft of snow). The...