The check for punching shear is correct K1-10. Also check the HSS wall for the weld. Design Guide 24 has a table for minimum wall thickness related to weld size. And as you mentioned the shear plate is designed per 10-101 in the 13th Edition.
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Our company is proudly approaching our 20th anniversary next week. But, as I reviewed my contact list it is disheartening to see the number of firms and clients that have significantly downsized or closed entirely. I am confident that our small firm has survived our recent construction market...
What is the "correct" detail for the attached skewed T Joint? The specifics are for plate thicknesses 3/8" or less, with an angle of 30* or less. A detailed root opening of 3/16" or less.
I have typically seen and provided the detail as shown in Option A. The other-side fillet weld is...
What software or design references do you use for design of baseplates (or embeds) and anchors?
We frequently deal with non-concentrically loaded baseplates. With combinations of shear, moment, and axial forces. Whether due to the cross sectional shape of the column or the position of the...
We are designing a 3 story external stair tower adjacent to a structure. The specifications require that the two structures allow for 4" settlement difference. The aluminum stair tower requires an enormous amount of bracing to be free standing.
How can I attached to the adjacent structure...
Any suggestions?
A project with completed erection, with many connections designed as Class A slip critical. The project is galvanized, so the coating is not Class A certified and the coatings are not blocked. What can be done if the erector failed to wire brush the faying surfaces?
The...
Any suggestions on how to verify correct bolt pretension 18 months after installation?
Connections are galvanized and slip critical. In some cases with OVS holes. Erection was completed nearly 18 months ago, and an issue has been raised concerning the bolt installation and whether the...
We are designing endplate moment connections for given shear, strong-axis moment, and weak-axis moment. The connections are to the column flange. The structure is simply a fixed frame of girders and columns, with no horizontal bracing or diaphragm. Our concern is that the column flange...
We have designed stair and handrail for years. And for the entire time we have discussed the weld of the post to the stringer flange. A standard detail is 1 1/4" pipe (standard or XS) to an MC12x10.6. I know there are channels intended for this purpose with wider flanges, but they are not...
Let be start by stating that my question is not racial or culturally biased in any way.
Simply stated, is it professionally ethical to purchase design calculations and analysis at grossly discounted rates from overseas (or anywhere), and apply your professional seal with no direct supervision...
Can you tack weld structural nuts? A325 or A490
I am aware of the AISC note "Anchor bolt material that is quenched and tempered should not be welded or heated". But does this prohibit the tack welding? The heat applied is minimal and applied only to the nut. Does this actually impact the...
