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I am trying to find Aluminum rectangular tubing that is about 4" x 2" and has a generous wall thickness. I would prefer 6061-T6, however at this point any type and temper would do. Does anyone out there have a material data sheet for someting meeting these specs. I am guessing that the...

Does anyone have an aluminum design manual? I have an American Std. Structureal Aluminum Channel C4x2.16. I am looking for the Area, radius of gyration about weak axis, moment of inertia and possibly an allowable axial column load at 3ft of length. This information would be greatly...

I have an application where a T-section is going to be a vertical column. I am driving two 5/8" bolts through the flange on both sides of the web directly into a vertical concrete wall as shown below. | | <---- T-section | | |________ || | || | <-----concrete foundation | |...

Bolts in the AISC Manual of Steel Construction show allowable tension in kips in tables 1-A and 1-B in Part 4. What is a common safety factor used for structural bolts used in lifting beams that make less than 500 lifts in their lifetime.

How far below the compression flange can a lateral support be and still be considered a laeral support. Is there a rule of thumb? weron4u

Does anyone have a publication from CMAA titled "Specifications for Top Running and Under Running Single Girder Electric Overhead Cranes Utilizing Under Running Trolley Hoist-No. 74?" I am looking for the section that specifies the structural design and mechanical design sections of the...

A fall arrest system is required to have an anchor point capable of holding 5000#. Is the anchor point required to hold this 5000# without exceeding the yield stress? I have a beam that can hold 4500# in the elastic region and about 8000# in the plastic region. Does this meet OSHA code?

A fall arrest system is required to have an anchor point capable of holding 5000#. Is the anchor point required to hold this 5000# without exceeding the yield stress? I have a beam that can hold 4500# in the elastic region and about 8000# in the plastic region. Does this meet OSHA code?

I am very familiar with allowable stresses in beams, however I am not familiar with the allowable deflections in trolley beams used for lifting. Someone gave me the following guidelines L/602 - single girder crane/monorail L/888 - Double girder crane L/400 - Jib However I think these are...

I am assigning load limits for various trolley beams in our company, and I was hoping I could get some input on allowable deflections for lifting beams. I have had several sources tell me different things, but nobody gave me a reference to where they got their info. I am assigning safety...

I am analyzing lift points at a company with many of them. I have been following the AISC Manual of Steel Construction ASD 9th Edition with regards to beams with unbraced lengths greater than Lu. I am currently analyzing a W18x55 that was put in place for a specific application. It is...

I have been analyzing lifting beams for their load limits for several months. I deal with single and double girder trolley beams, lugs welded to the bottom of beams, and slings around beams. I was hoping that someone could give me an idea of what type of safety factors are expected for these...

I have a common combination section trolley beam. Its an S-beam with a channel riveted to the top flange. The unbraced length is large so I need to calculate Fb. I can use the radius of gyration with Equation F1-7 from the Manual of steel construction ASD 9th Edition to get Fb, however the...

I have a sling over an angle iron, L2&quot;x2&quot;x3/16&quot;, and I'm calculating the hoist capacity. I was just wondering if I should use 0.60Fy as the allowable bending stress, or if I should use a smaller value. I couldn't find anything in AISC-ASD vol. 9 about bending stresses in angles...

I'm working with I-beams from probably the 30's that have flanges of two completely different dimensions. One is thicker than the other and one is wider than the other. So I bought the AISC Book &quot;Rehabilitation and Retrofit Guide&quot; which supposedly has the properties of all the shapes...

Does anyone know what the allowable shear stress is in plate steel. I'm hanging a load from an eye-hole cut in 4&quot; square plate steel. I was wondering if it was 0.40Fy, or if that only applies to beams in bending.

I have an equipment removal beam that is used for lifting a motor. The beam was put in place in the 50's and was not rated. My question lies in the connection to its support. The lift beam is a [W10 X 22] and is supported by two steel rods that are welded to the top of the beam, directly above...

I have a cantiliver beam loaded at the end. According to AISC Allowable Steel Design, (Lb < Lu). My question is, is the effective unbraced length of a cantilever beam double the actual unbraced length. I would assume that its ability to twist is greater than if it was a pin-support of the...

does anyone understand this coefficient very well? I have put lots of time into trying to figure out what the &quot;AISC ASD Manual&quot; means in its description of the coefficient. In a simply supported beam with a point load in the middle, I need to know if I should use Cb=1.75 or 1.32 or...

In section F1 of &quot;AISC Manual of Steel Construction (ASD) - 9th edition,&quot; there are three different ways to calculate Fb. Two of them depend on the slenderness ratio, and the other can be used for any slenderness ratio. When comparing the one that can be used for any slenderness...