Tape (Typar/Zip)
Posted by: craig.parker
What are folks using for formulas with these. A roll of Typar tape is 165’ long, but I’m not sure how I’m going to figure how much square footage it covers.
I’ve got a formula in a Zip assembly for the tape - roundup([MeasuredArea]/180*1.1,0)
But I cooked that up last year for another employer, and have no idea how I arrived at that number. Looks like there are 90’ to a roll of that.
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Commentaires
Reply by: Jonathan.Moll
I calculate seam tapes for various things this way…
For each 4’x8’ sheet good, I need tape on one long side, and 1 short side - the sheet adjacent picks up the other sides - (This leaves a small discrepancy on the perimeter, but waste accounts for that; and perimeters don’t get taped with a lot of my examples.)
That would be 12 linear feet of tape needed for every 32 sqft.
12 lnft divided by 32 sqft equals 0.375 linear feet per sqft.
Measured area times 0.375 equals lnft of tape needed
([MeasuredArea]*0.375)/165
That should give you a pretty good number for how many rolls you need
Reply by: Jonathan.Moll
Numbers are easily adjusted to account for different sizes of sheet goods, and length of rolls
Reply by: Jason Armstrong
My shower wall prep is a similar situation. I do an area take off, divide this by 32SF (4’x8’ sheet), then multiply this sheet count by 12LF. I use 12LF because there are 24LF on the perimeter of the sheet but each sheet is sharing the joint (generally) with the adjacent sheets. Then divide the total LF of joint by 95% of the specified roll length to get Number of Rolls. This is a raw takeoff so waste will have to be factored in however you see fit.
((Area in SF / 32) * (12LF)) / (Specified Roll Length * 0.95) = Number of Rolls
Reply by: PeteyPablo
I think you have great answers above, the one thing to keep in mind with roundup is that it rounds up each and every measurement you take. So each time you have a measured quantity, it’s goign to round up on that specific quantity. You may have 10 measurements...all of which are under 160 SF, so your return answer will be 10. We find the roundup function to be hard to use when we have repeat measurements in an estimate.
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