Search results for query: *

To Whom It May Concern, Does anybody have a design example that they can refer me to for designing web doubler plates and their welds for a steel beam? I can't find any examples particularly for how to size the welds in AISC's design examples or elsewhere. Any help would be appreciated! Best...

Good morning, Would someone please advise what flexural unbraced length should be used for a cantilevered wide-flange beam; should it be just the cantilever dimension or twice the cantilever dimension? Thank you! jochav5280

Good afternoon, How are other engineers considering foundation loads generated by exposed structural steel structures subjected to temperature loads? Usually the foundation supports are modeled as rigid pin supports in my office, which can produce tremendous foundation loads due to thermal...

Good day, When designing columns & beams, we must determine what the un-braced lengths are for flexure and compression. AISC has specific strength and stiffness requirements that must be observed. My question is how are engineers actually checking verifying that their braces are strong and...

Good Day! I design industrial buildings and have been asked whether or not our equipment suppliers need to report their ASCE 7-10 seismic loads to us for designing our structures. My understanding is that they are to use ASCE's equipment seismic load section for designing the equipment...

Good Day! I would greatly appreciate if you could provide me with some help in identifying the best practices for reporting steel connections loads to a connection engineer. On our most recent project, simplifying/shortcut methods such as 50% UDL was used for determining the required shear...

Good day, Does anyone have any design advice or design reference materials for designing steel beam end connections for lateral shear? Specifically, I'm looking for guidance on how to check beam-to-beam clip-angle connections for lateral shear capacity, (are there any interaction effects that...

Hello All, Does anyone have experience with applying a Modal Response Spectrum Analysis combined with AISC's Direct Analysis Method (DAM)? Per Chapter 12 of ASCE 7-10, certain horizontal and vertical structural irregularities disqualify the use of the Equivalent Lateral Force Method (ELFM)...

Hello All, I've got a fundamental question regarding deflection checks on cantilever columns or beams. In short, when a spec of L/400 for instance is placed on a cantilevered beam or column, what is to be used for L? Is it to be twice the actual cantilever or just the cantilever dimension...

Hello All: Are lifting lugs required to be load tested prior to using for field erection? Does ASCE or any other building code cover these requirements? Thank you! jochav5280

Hello All: Would someone please enlighten me as to the purpose of ASCE 7-10's Seismic Overstrength Load Combinations? Are they to be applied just to the connections or to both connections and member design. I've not been able to find a good explanation of what these are used for. I've been...

Dear All: I am working on a project where our client is using ASCE 7-10 as the governing building code for a site in the Peruvian mountains. Would someone advise if this is okay, or if we need to use the building code associated with where the project is actually located, (i.e. Peruvian...

Good evening: Does anybody have any design equations or guidance for determining the appropriate plate washer steel grade for anchor rods? AISC's Base Plate Design Guide does not give any guidance, and only indicates that F436 washers should not be specified since they are usually too small to...

Dear All: Would someone please help me understand why cosine squared was used in Joseph Yura's Design Examples 1 & 2; please see the last page of the attached document. Many thanks in advance...

Good evening: I would appreciate help in understanding how to specify the unbraced lengths for steel columns and beams. With the implementation of AISC's Direct Analysis Method, I'd also like to understand how using a K-factor = 1 impacts definition of these unbraced lengths. For instance...

Good afternoon: Would someone advise if I am interpreting Section E5b of AISC 360-05 correctly? E5b says: For equal-leg angles or unequal-leg angles connected through the longer leg that are web members of box or space trusses with adjacent web members attached to the same side of the gusset...

Good afternoon: Would you kindly advise if adding mechanical equipment atop structures classified as “Elevated tanks, vessels, bins or hoppers” per Table 15.4-2 of ASCE 7-05 disqualifies them from this classification? Our company builds large crushing plants for mining projects and would like...

Dear All: Does anyone have any good resources for implementing the STAAD-ISM-Tekla workflow? I can't really find any good instruction on how to execute this workflow and it offers some serious advantages. I'd appreciate any insight as to how to leverage the BIM type technology. Essentially...

Dear All: My colleagues and I are having difficulty understanding if an inclined, simple span beam with vertical loads requires a horizontal reaction for static equilibrium. Our software tells us there is no reaction, which makes sense from a statics perspective since there are no horizontal...

Good day, I'm designing a heavily loaded (2000 kip) steel wide-flanged, concentrically braced frame connection where the brace will be mitered and frame directly into the joint, with the flanges CJP welded to the column and beam flange. My question is what calculation should be carried out to...