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Thanks. My record temps are: High 107 deg F Low 4 deg F Is there a way to calculate it from these values.

I am trying to determine the change in temperature for a standing seam metal roof in order to complete thermal expansion calculations. I would appreciate any help.

Thanks for all the comments. I have narrowed my problem down some. I am convinced that the 2nd floor diaphragm is not required to transfer lateral forces in the building. I am now considering two issues: 1. The possibility of removal increasing the column effective length 2. The...

It's hard to see from the picutures, but the columns are continuous. The columns are 28.5' tall.

That did not work. Try this http://i377.photobucket.com/albums/oo219/jmmcqueen/Warehouse/IMG_2634.jpg http://i377.photobucket.com/albums/oo219/jmmcqueen/Warehouse/IMG_2636.jpg http://i377.photobucket.com/albums/oo219/jmmcqueen/Warehouse/IMG_2626.jpg...

Thanks for all of your input. I was told that the building was originally a warehouse for a department store. There are no signs that it was ever used in an industrial application. However, I can’t totally rule out that possibility. I believe the building was designed for the frames to...

Thanks for all of the input. The span is 40'. You can see a section of the building in my other post titled Warhouse Renovation. Thanks again.

I am involved in a renovation on a warehouse that is about 60+ years old. The lateral system consists of x-bracing in one direction & a rigid truss system in the opposite direction. I attached a drawing showing the floor plan and side view showing the x-bracing locations. The drawing also...

ACI 360R-06 is a good reference.

I am trying to find a reference for the design of a steel truss with the type of connection shown in the attached picture. Thanks for the help.

The double joist is supporting a rooftop AC unit. The joists are strong. The roof currently holds about 4" of water when it rains. It looks like a big lake up there. I found two joists that were damaged due to the extra weight. I will be able to look closer when they get the deck off...

Good ideas LobstaEata. I am a fairly new company and I do consider this a learning experience. I have not been very good with contracts so far. Does anyone use CASE contracts?

The metal deck is going to be replaced. hokie66: Will it continue to rust if the existing rust is not removed? I attached another picture. I have these joists marked to be replaced. They don't look like they have any section loss but they are rusted pretty bad. Any thoughts...

I am involved in a renovation project where a lot of the existing bar joists have some rust on them. The roof has a lot of leaks. It appears to mainly be surface rust and not to the point where it looks like the joists have been weakened. We are going to be replacing some but would like to...

Has anyone ever taken plans back because you could not get paid? My situation: Residential remodel project (structural) Homeowner responsible for payment Work is through builder (good relationship with builder) Construction has not started Homeowner keeps telling me the money is coming I am...

hokie66 Thanks for the clarification. That makes sense.

Thanks for the input. The use of shrinkage compensating concrete is well documented. You are correct that all concrete shrinks, but shrinkage compensating concrete expands (first seven days or so) before it starts to shrink. The concrete goes into compression as it expands and this offsets...

Are your building columns supported on pedestals? I don’t use hairpins if I have grade beams connecting the footings as long as I am not using pedestals.

I am interested in some feedback from people who have experience using shrinkage compensating concrete for slab-on-grade applications. I am considering using this as an alternate to a post-tensioned slab. I need a monolithic slab/grade beam/footing foundation due to expansive soils so it makes...

Actually, IBC 2006 has changed the 20 psf to 15 psf.