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At a metals facility I have a below the hook lifting device from 1972 that calls out: 1 1/2" CHAIN TAYLOR MADE OR EQUAL Can anyone point me to the right direction to determine the steel material spec and rated load for this chain?

Hey! I have some existing drawings from 2006 that specify "Cast Steel - Johnstown Works Grade SX, .10-.20 C". Could you provide me any direction on the material specs? This is for a furnace vessel lip ring at a BOP in the USA.

I am working on a 150' diameter, 40' tall fixed roof oil storage tank. The roof structure consists of W12 girders, forming an octagon in the middle of the tank radius. W12 rafters bear on the girders in a radial pattern, with steel plate bearing on the rafters. Does API require the plate be...

I have an existing fabrication drawing for a tank by "General Welding Works" in Houston, Texas. They appear to be closed. Anyone know if they were bought out?

Is there some way to get columns and beams to move with gridlines when I change them? I want to make a preliminary model and adjust it as the design changes.

I am looking at the first connection type in the AISC 14th edition Table K1.1, a Transverse Plate T- connection. If you have a compressive load, R, as shown in the diagram, but you also have one on the other side, how do you get the allowable crushing load? My first thought is that it should...

I am designing a pin in double shear. I have (2) 3/4" plates with (1) 1 1/2" plate in between them with 1/16"-1/8" gaps in between the plates. It would seem that all of the force is transferred in shear and bending in the pin would not need to be considered. Another engineer says that I have...

I need to calculate the seismic force on an elevated tank foundation (deep concrete caissons/drilled piers). I am analyzing the 7' diameter x 10' tall hazardous liquid waste tank as a "non-building structure' per ASCE 7-05 chapter 15. I am assuming that it is rigid and 15.4.2 applies. The...

I have some example bridge deck screed plans and some computer output. Does anyone have a good resource or example on how to calculate them and what goes into the analysis?

I have 2 cranes, running parallel; which are both loading the same steel truss. Do I have to use the maximum loads from both cranes to design the truss or can I reduce the load somehow?

I have been using this package for 2 weeks now. I am pretty disappointed with the quality of the program. The modules have constant bugs, and support is manned by people who don't know anything about bridges or their own program! It seems that their call center supports tons of software so...

I have searched this site and others and talked to many engineers, but want more info. What is the best way to learn bridge engineering? (Steel LRFD)

Is there any rule about combining tension-only and ten-comp bracing? I would normally ignore the tension only bracing if it were rods, but now I have L5x4x5/16 angles. (please include a reference if possible)

I am working on adding a column on a crane runway beam at mid-span. Anyone have experience with this so I know what to look out for?

I know that there was once a section in IBC that said: "If the live load exceeds 100 psf, include XX% of the live load in the seismic weight". I could not find it, anyone familiar with its location? (Note this is not the 25% of storage loading)

Continuation of prior discussion located here: http://www.eng-tips.com/viewthread.cfm?qid=212541&page=223 Received from the Steel Solutions Center: "There are some situations for which Cb can be less than 1.0, but they are rare and specialized. The 2010 Spec. Commentary spells this out a bit...

I have a client who has modified his crane runway beams with plates connecting the edges of top and bottom flanges of the plate girder (see attached image). He wants me to analyze the section to determine an allowable crane capacity. My plan is to ignore the interior web and analyze the...

I have a client who has modified his crane runway beams with plates connecting the edges of top and bottom flanges of the plate girder (see attached image). He wants me to analyze the section to determine an allowable crane capacity. My plan is to ignore the interior web and analyze the...

Using AISC Design Guide 7 and CMAA 74 for the evaluation of an existing underhung crane runway has yielded results that I feel are too conservative, based on observations of the long-term on site performance. The main limiting factor in my calculations is weak axis yielding. Local bending...

Anyone have any comments on www.PEreview.net What prep programs have you found helpful?