I am working on an existing structure from the 80's which used steel tube columns and doubled light wood trusses designed for end moments. The columns have big flag plates welded to the top, and the top and bottom chords of the trusses are bolted to it.
We have to modify this structure. We are...
Is it possible for principals of a firm to be considered liable for errors or unethical activity of another principal?
I’ve got a situation where I believe a principal is practicing outside of his expertise (and encroaching on mine).
On the one hand, surely he is solely responsible since he is...
I've got a project at a sports field which includes some 70' - 80' light poles. The electrical engineer spec'd Musco poles, and I have received some submittals from the contractor. In my specs, I asked for stamped pole shop drawings showing that they meet the project design criteria (I assumed...
This is a follow up to a previous post I made about pre-engineered metal building modifications.
This building is in SDC D. I am replacing existing rod bracing with a portal frame. The building was built in the 90s. Does the new frame need to meet current seismic detailing requirements? In...
Hi all.
I've been asked to provide a design allowing a PEMB owner to remove X bracing for new doors. I've done this before with chevron bracing and new beam, but this time the openings are going to be quite large and I don't have enough room for that.
So I'm going with a new portal frame...
Hi all.
I'm working on a small residential renovation project. This is a late 19th c. brick building. The project is on the interior of the building, and a lot of the walls are covered with gypsum board or painted. I've worked on similar buildings, but none with this much involvement with the...
Maybe some of you have been in this boat before. I am currently working alongside an architect as part of a design firm. We have been invited to give a proposal in a neighboring state (IL) for a small building. He has a license there, but I do not have the SE (PE only). However, reading the...
I'm working on a repair detail for a 2-ply 2x12 valley rafter in an approx. 130 yr old story building. The rafter is undersized and each ply is split at some knots near the mid span.
I think the best thing to do would be to replace or sister it, but that would require temporarily supporting...
I'm working on a project where I've been asked to use multiple types of seismic force resisting systems. I have done this before in steel and conservatively chosen the lowest R value in ASCE 7 and still come up with pretty economical results.
The building I'm currently working on will be...
I'm looking to take the SE exam in October 2022. I benefited greatly from taking a prep course for the PE exam. I'm looking to do the same this time around. I'm considering courses from School of PE, PPI, and NCSEA. The NCSEA courses seems to be lighter weight compared to the other two...
Howdy all. Is it at all possible to do an IMF or SMF in two direction with WF beams and WF columns? No prequalified connections into WF column webs exist in AISC 358. It seems the only options are:
[ol 1]
Make all the columns cruciform
Use the Conxtech connection in chapter 10 with square...
Hi all.
I'm licensed as PE in a few states for the company I work for, including Illinois. I was taking a look at the Structural Engineering Act, and wanted to confirm with some folks here that there are absolutely no exemptions to this act? I read in an IDFPR manual that single family homes...
Hi all.
For those of you that own your own business - how many years of experience did you have when starting out, and what scale of projects were you working on? Did you feel skilled enough, or was there a lot of learning as you go? Did you wait too long or do you wish you had gained more...
Hi all, I'm working on a little project to stabilize and push back my bowing basement wall. Going to go with an I-beam at 4-5' centers, with an angle foot plate anchored to the basement slab and an angle top piece connected to my joists. I'll have a bolt going through the top angle to apply...
I read Article 70 this morning, and an equation is presented for the pressure on a tunnel crown "at a great depth below the surface."
σv = [(γ*B1)/(Ktanф)] * [1-e^(-Ktanф(D1/B1))] + [γ*D2] * e^(-Ktanф(D1/B1))
In the paragraph below, Terzaghi writes "As soon as the height D1 becomes equal to...
I'm working on a problem where a retaining wall will be loaded toward the backfill, and I'm trying to come up with some deflections. I've created a model of this structure with a mesh of spring supports to simulate the backfill. I'm looking at the Das text Principles of Foundation Engineering...
Hi all,
This is a bit of a follow up to my last post about hoping to do some solo consulting in the future.
I'm noticing a need for a mentor at this point in my engineer career. I'm working in a very niche heavy industrial type of structural engineering, but hope to steer towards building...
I'm interested in starting my own firm someday. It would be only me, and I would do everything except possibly some drafting on occasion. I would focus on structural work - light structural and architectural design, home inspections, and feasibility studies. I would also do site work like...
Does this section apply to cases where concrete is poured against concrete without any reinforcing across the joint? Say, a slab poured against a concrete retaining wall? That is a shear plane, and I'd like to considered the ability for this plane to transfer load.
