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EngEquilibrium, I am sure you will receive very good answers to your questions at this site, but be sure you contact your local/regional Hot Dip Galvanizing Suppliers and Powder Coating Suppliers and ask them the same questions. Please post any responses that illuminate any problems with...

Just an offhand recommendation. Take AWS D 1.1 Figure 10.6 Ed 2020 over to the copy machine and create a pdf and then post the detail in your question. This would really speed up the answering process. Give us a little help with your question. Jim

NikaJ, What is your definition of a French drain? Mine is a post hole sunk vertically to below the frost line, approximately 48" to 60" for the Southern half of Wisconsin and then filled with clean rock/large gravel. Maybe including a sock filter to prevent fines from invading the hole...

PS to previous answer. The standard calculation for Snow Drift already contains a reduction of Snow Load on a lower roof built in. Jim

No. Not per USA building codes or ASCE 7-XX. Jim

TAB_HOO Where is the building located? What is the appropriate building code for that location? Jim

There are also "bangies", which, at the easiest, are an angle with a tab as the continuation of one of the flanges. The tab is inserted in a pre-punched slot in the purlin web, high and/or low, and banged down with a hammer to form a hook, which serves as a low-cost rotation restraint. Jim

Joe117 I don't know this is the exact table you are looking for, but a table for that information is contained in the following volume: CRSI, Design Handbook, Working Stress Design, Revised 1963 ACI Code, page 14-11. Most of the caveats raised previously are included in the notes accompanying...

In a standard pre-engineered metal building the purlins do not load the flybraces. The flybraces load the purlins and are loaded by the roof/rafter beams, which they brace. The span of the purlins is not reduced by the connection of flybraces. Every purlin is not provided with flybraces...

JStructsteel, What you have shown is almost certainly a load bearing detail and need additional information, i.e. what is the foundation detail below the column and what is the loading situation above what appear to be truss Joists carrying the floor above the beam. A Three ply beam is a very...

BridgeSmith, Crane beams are rarely continuous over the support columns or brackets as that would involve both load multipliers and increases in the stress reversal load for fatigue analysis. Crane beams are normally simple, except in special cases. Jim H

mfstructural, The checking shown in the photographs looks like standard drying checks. Have you stretched a string from one end to the other and verified that the sagging per each section is unacceptable??? What are your limits??? What are you estimated design loads??? As others have...

JKJohn, I agree with Eric C., looks like pith, i.e. the center of the tree. If a crack does not propagate thru the thickness of the member, across the member. It is usually not significant. Jim

KootK, I agree, it is hair splitting but I think it is significant hair splitting. There is almost no relationship between the second number in the Joist Designation and the weight per foot of the joist, except that as the weight per foot goes up so does the second number. It is too easy to...

tmgczb, What code are designing under, as that will determine how they want the torque calculated? You are getting good advice, please do NOT dismiss it out of hand. Jim H

KootK, I would be careful of referring to the second number in the "joist designation" as the weight category. Maybe the capacity category or PhamENG's chord designation. The weight per foor is on another line in the table and does not have a close relationship with the second number of the...

SandwichEngine, I must strongly disagree with your statement about Hot Rolled Steel shapes vs 3 plate steel sections. I can only speak from my 30 years of experience with Butler buildings ( 10 years with Butler Manufacturing Company and 20 years with a major Butler Builder). If you want Hot...

srm01, Are you kidding me??? Blodgett's Formula, circa 1985~ and Allowable Stress Design, AISC Red Book, 8th ed. or Green Book,9th ed. AISC 13th Ed, 10-90 Table 10-6, LRFD or modified ASD. Look for the formula for this table 10-6, in the footnotes or in the companion examples volume. Good...

justincaseph1, It depends on each state engineering boards standards and will vary per their requirements. We had a Canadian P-eng license holder who let his license lapse and had a substantial amount of difficulty getting it reinstated. You would have to check with each state board for...

Justincaseph1, The way it was explained to me, was that you keep the first one so you can say that you have been a PE for X continuous years, measured from the first PE. Your mileage may vary on that solution. Jim