Hi. Thinking about the load path at the L2 diaphragm . .. . Is this a rigid diaphragm? Have you considered the deflection capability at L1 of the concrete shear wall (very stiff) and the OMF (flexible)? When L2 rigid diaphragm is pushed the loads will be distributed based on stiffness. I...
Installation would be from above, as the flooring has been removed from 70% of the span as part of the renovation. It is bathroom and the arch called for 2" setdown. We said that we would need to see this existing framing commenting. I guess on a positive was the sag already had the set down...
The deflected shape of the existing joist will remain. Good point about not jacking the existing joist. Top of new joist will be level. The flooring would bear on the new joist. For fixing the two joist together, I thought that screws (as opposed to bolts or nails) would minimize the lag or...
We are looking at some existing 120-year-old floor joist that are “over span” and have a dead load sag of about 2”, which is 2 to 3 times current code deflection limits. For strengthening, we have suggested sistering on LVL to the existing joist. However only 70% of one side of the joist span...
Thank you for the responses. Floor squeak is a potential issue with those clips. Discussing with a few other engineers, they were in line with XR250 - this typically ignored.
As part of the residential renovation, we are adding a second level to a single-story house. The house is timber framed with timber subfloor framing on pile timber piles and perimeter ring foundation. The contractor has requested the new level be support by steel beams and posts, like a...
Thank you for the input. It was a W8 with 11.875 deep joist, but that was dropped to 9.5 for arch reasons. For the W8, another option would shift it over a few inches and run a HEADER along the glazing line with the OMF adjacent.
-
- With a 3/4" nailer, how did you fix that to the top...
For a residential job, architectural constrains are minimizing the nailer thickness on top of W10 gravity beam. Wood roof framing face mounted to blocking in web of W10. The roof ply fixes to the nailer, so any fixings would need to be recessed.
What is the thinnest that the nailer could...
Thank you for all the responses. In terms of inspections, what if a testing agency does a visual inspection of welds, followed by NDT of any welds in question and spot checks those in high stress regions?
NDS could be magnetic particle inspections on fillet welds and ultrasonic on full...
A client has a 25 year steel portal frame warehouse with an existing crane rails and an existing 3 ton gantry crane in use. He would like to add two more 3 ton gantry cranes and says that is what the building use to have. That was a couple owners ago.
The warehouse is approximately 32m...
Very good point.
All the members acting with axial loads (tension/compression) with some minimal bending in the top chord.
At the top/bottom chord junction - you mentioned "sizing the members for the resulting load effects". Are you referring to at moment caused by an eccentric load put on...
Thank you for the input.
All the members are in the same plane. If cross members are notched, they would look like
I thought about using a concealed plate at the junction of the bottom chords and you like to be do what is more practical. Notch vs concealed plate?
In terms of...
A client has decided against the external plate connection for a timber scissor truss and has requested concealed connection for the 90mm (3.5”) wide members.
What type of concealed connections are typically used for these truss? I was considering about plate connections for the top three...
Thank you sending that through. It looks like those are proprietary stone veneer sheets.
I have heard various answers for max height. One saying 10' max is an industry standard, while the code limit is much higher. Another mentioned from his commercial experience, he tries to use few shelf...
A client would like 6in stone veneer cladding on a new story wood framed high-end residential job.
Is there is rule-of-thumb for how tall stone veneer can be stacked before a self angle is required for support? Note that stone veneer is supported laterally by extra heavy ties at 16" centers...
Is there any positive connection of the precast slab to the cast in place wall? If not, has deflection been consider to check against lose of bearing for lateral cases such as seismic MCE?
Thank you for the reply.
5 feet is the depth. Standard width and length of 20 ft container.
With a single container, only the top is being cut off, so still have the some structural integrity of the original units, like the end panels. With much shorter length, thermal expansion would not...
A client asked about using three 20 ft long shipping containers to create a 5 ft by 60 ft long above ground outdoor lap pool.
His plan is to cut off the top and some ends of the container. At the joint of the modified containers, the panels of the containers would be welded together (or...
Thank you for the suggestions.
- How do you find using an iPad tablet and PC main computer? Do you have compatibility issues?
- Are the apps similar for Surface and iPad?
I am looking for a tablet to use mainly for mark ups and sketching concept designs for clients during meetings. It would also be used for site visits and maybe calculation packages. It would not be replacing the engineering's main computer but supplementing it. I have used iPads in the past...
