CFS Joist Identification

My first thought was that it is a Macomber joist. But then I looked online, and it doesn't appear to be.

DaveAtkins

Could be by Butler. I've never seen a load table on their joists though

Chord profile looks similar to Northwest or Ridgeway.

I suggest you add a pair of calipers to your site kit. Easy to measure one of these when they are rod webs.

After some back and forth with Ken Charles at SJI, it turns out these joists were manufactured by Berger, circa 1974

I've included a link to the specs/load tables in the event it would be useful to others. Thanks again for everyone's input.

Link

Thanks for the link... SRE should likely add these to his website.

So strange to see the singularity approaching while the entire planet is rapidly turning into a hellscape. -John Coates

-Dik

I have those as well as micrometer and an optical pocket microscope... the latter often used for measuring cracks in concrete or masonry... of looking for debris to determnine if a crack is new or old if possible. If there is debris or cobwebs, the crack is less likely to be recent. You can check to see if the edges of the crack are 'pristine' or rounded. It has graduations so you can determine the crack width in 1/10 mm.

So strange to see the singularity approaching while the entire planet is rapidly turning into a hellscape. -John Coates

-Dik

dik said:

an optical pocket microscope

Click to expand...

dik - something like this?

Not quite so fancy, but similar... mine is an aluminum tube with a lens(lenses) that give about 20x magnification and is maybe 50 years old. It's sort of like a 'thick' pencil, flat at both ends, except the bottom has a bevelled side to let light in. It's not LED illuminated, but relies on daylight or a flashlight. Something like that could be useful, specially if it's illuminated. It should have a scale that will let you 'guess' the width/size of what you are looking at.

With a new one, you likely have photo capability, which this one sorely lacks.

So strange to see the singularity approaching while the entire planet is rapidly turning into a hellscape. -John Coates

-Dik

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So strange to see the singularity approaching while the entire planet is rapidly turning into a hellscape. -John Coates

-Dik