What is the typical detail for attaching the two? Continuous embed plate? Plain concrete and they drill in a tapcon. Assume there's some uplift on the truss connection but no more than 400 lbs.
First a little background: I work at an A/E firm. The structural engineers who work here have no more than 5 years experience....most are at the 1-2 yrs range. Most of the projects that come through are lowrise steel, wood, metal stud, or PEMB's. The architects make them as difficult to...
I'm researching how to analyze a cantilever for vibration problems in SAP 2000. How do you guys/gals approach these problems when they come up? The vibrations I'm talking about are for human occupants and not high frequency machines.
I've been looking into the AISC design guide for vibration...
Say you have a two story wood structure (non residential) built in 1990 and it gets the majority of its roof structure torn off in 2008 by a tornado. Do you think its allowable to rebuild the structure using the original 1990 plans?
What exactly is the intent of the code when it comes to wind design? If your building is designed in a 90mph 3-sec gust zone, should it have absolutely no wind damage if an 89mph wind comes along during a severe storm? Obviously, neglect any impacts from flying debris. Also, can anyone...
Has anyone had experience using The Steel Network's free value engineering service? http://www.steelnetwork.com/VE.asp or any similar VE service for that matter.
Wondering if this is the real deal or just a gimmick to get their foot in the door.
We have a 3 story structural steel moment frame...
IBC design.
Would you assume a Kll factor of 4 or 1 for an interior bearing wall stud member?
I suppose the question would be if you consider a lightgage stud as a column or not.
How do you guys approach modifying/adding load to existing concrete construction where existing drawings aren't available? Is it common practice to assume the beams and girders have at least the minimum amount of reinforcement in them or do you get them X-rayed? X-raying seems overkill, but...
Has anyone here designed heavy timber columns? I'm talking an amish carpenter cutting down a Southern Pine tree, debarking it, and using it as a 20' tall exposed exterior column for a roof on a house. What issues would this create?
questions in my mind are:
1. What design loads could I use...
Does anyone utilize publications to aid in their system selection for mid to high rise buildings? Be it reinforced concrete, composite steel, etc.
It seems like a lot of people just go with what they've done in the past instead of trying to determine the best system.
Well, my architect is at it again! In his "design" he's proposing the use of timber columns that are angled about 25 degrees from vertical to support a large portion of a roof. Where do you even start that sort of analysis? Have you seen it done?
I have shear walls throughout the rest of...
Who's responsibility is it to locate borings for a geotechnical investigation? The geotechnical engineer or the EOR? I see the EOR taking on liability he/she locates them.
I have a geotech who won't drill unless we provide recommended boring locations. We've never seen anyone require this in...
2 questions:
If you're a PE who knows you're going to be leaving a company in a year to go back to school, and the company doesn't know it, how would you approach sealing drawings for the remainder of time at the company?
How does the liability flow after you leave the company and are in...
Having trouble finding where in the ASCE 7-02 code it defines how you calculate the out of plane seismic loads on a bearing wall. Does someone know offhand?
I interpret the equivalent lateral force procedure to only distribute the base shear to the diaphragms, not to individual components.
I'm in a mid to high seismic zone and I'm doing research for the preliminary design of an 8 story office structure. The developer's contractor is claiming they've used lightgage that tall on past projects, but I'm not convinced the lateral system will work in any seismic area. Strap bracing...
If you have a wood shear wall and it's long enough, can you use the sill plate anchorage to replace the typical end-of-wall shearwall holddown? Theres no code requirement for holddowns and I think its more of an analysis decision.
Never seen it done, but am looking at a set that has this.
I'm looking at designing a multistory lightgage structure. Most of the lightgage I've done before was single story using standard studs. I had a heck of a time getting strap bracing installed correctly. With multistory, I dont want to be dealing with the same problems.
Have any of you used...
Has anyone heard of turndown footing system used in the Northeast that utilizes non-frost susceptible fill? Supposedly this is being used to reduce the turndown depth.
In a nutshell, rock is placed beneath the turndown, and the rationale is that the rock wont frost heave. I'm not so sure I...
Modifying an existing building. Multiwythe brick bearing wall construction. Affecting the building enough that the entire system must be brought up to code. Can you utilize multiwythe brick walls as shear walls? I don't think so but others at my company do. I mean, even if you were allowed...
