This post spawns from an earlier one but I don't want to take over another post and it is still a different topic.
I'm a licensed PE with 18 years of experience. All of my experience is in structures. I work on the west coast so high seismic is the norm for me. The typical bill rate (+/- $5 or...
I’m working for a mechanical fabrication facility and we need to perform tests to determine the capacity of our lift lugs on our Air Handling Units (AHU). These units are commercial and some are extremely large and the lift forces can be 4k – 5k in some cases.
I’m not concerned about the lift...
Hello all mechanical engineers. I'm a structural engineer and somewhere along the way I was told that only steel pipes are included in the ASTM B31 code. Is this correct? I have a project that uses HDPE and other 'plastic like' products.
Thanks!
Tracy
??? from a structural engineer:
I have to design gravity and seismic support for a small platform approximately 4’ wide x 17’ long. The platform is along the side of a boiler and will be used by employees to maintain some small mechanical units.
We are having problems fitting the platform...
I have to design gravity and seismic support for a small platform approximately 4’ wide x 17’ long. The platform is along the side of a boiler and will be used by employees to maintain some small mechanical units.
We are having problems fitting the platform into the structure because of the...
I started a new thread in the "Seismology Engineering" section - if you are familar with net uplift on steel brace frame footings please take a look and help me out if you can.
Thanks in advance!
My questions are in regards to the design weight required to resist uplift on a brace frame column due to seismic loads. I've read a lot regarding wind loads but those are not based on the weight of the structure so I think that issue is different.
I am designing a structure in a high seismic...
I'm using galvanized A36 structural steel members in outdoor conditions. The weather is moderate with some rain but not extreme cold/hot and it isn't near the ocean. I need to anchor the columns and baseplates to existing concrete.
I'm using Hilti HIT-RE 500-SD epoxy anchor bolts. If I use the...
I'm reviewing the AISC design example for an OCBF Brace-to-Beam/Column Connection - Bolted.
At the very top of page 3-26, the second sentence references an "analysis found on Manual page 13-10". I've also seen this reference in other parts of this book.
What "manual" are they refering to?
Thanks!
I am designing an upgrade to an existing Boiler support frame. The boiler is approximately 65 feet tall and in plan view it is appx 20' x 17'. It is located in South America in a high seismic region.
The original lateral resisting system is Structural Steel Braced Frames. The load path goes...
I have a large canopy that is 72' long (parallel to the bldg) and extends 28' (perp from the bldg) from the pre-cast concrete shear wall structure. Our design plan for the long direction seismic event (parallel to the bldg) is to provide an ordinary moment frame on the outside of the canopy and...
I've only been a structural engineer for 12 years but in that short time I've seen the quality of "design by others" or "bidder design" submittals decline at an amazing rate. Our peers (other structural/professional engineers) will stamp and expect an approval for incomplete and mistake laden...
