Concrete Tile Roof
Concrete Tile Roof
(OP)
I was figuring out the dead loads for a wood tower on a wood building. The wood tower has a concrete tile roof. I was planning to use 15 psf as weight of my tile. My co-worker is saying I am being too conservative. He says the weights vary from 9 to 12 psf. What is the general weight that I should assume for concrete tile?
Do towers have sprinkler systems, I would like to know if I need to add the sprinkler dead loads to the tower dead loads as I did for the main roof.
Do towers have sprinkler systems, I would like to know if I need to add the sprinkler dead loads to the tower dead loads as I did for the main roof.






RE: Concrete Tile Roof
RE: Concrete Tile Roof
RE: Concrete Tile Roof
If it is a full 4" then you are looking at 40 to 50 psf, and that is ridiculous. Normally 15 to 20 psf depending on the material, the manufacturer, and the style.
Mike McCann
MMC Engineering
RE: Concrete Tile Roof
RE: Concrete Tile Roof
RE: Concrete Tile Roof
RE: Concrete Tile Roof
When you are dealing with tile roofs, long term deflection can be a problem, reading every major beam in the roof if it is too great. Don't be afraid to be conservative with your dead loads. It may save you a lot of future headaches.
Mike McCann
MMC Engineering
RE: Concrete Tile Roof
For 2" Book Tile, they suggest 12 psf, and 3" 20 psf.
Other tile types I see in the list range from 10 to 19 psf.
Bottom line is you really need to know what you are dealing with here.
Mike McCann
MMC Engineering
RE: Concrete Tile Roof
RE: Concrete Tile Roof
As an aside, I would verify the Architect's details with the manufacturer. The final word on installation is likely to be the manufacturer's.
RE: Concrete Tile Roof
RE: Concrete Tile Roof
Regards,
Lutfi
RE: Concrete Tile Roof
Mike & Ron's number are good (from experience speaking) for preliminary design. Could be used for final, if you wish to add a few pounds extra for uncertainties. But Jed has led in the right direction - manufacture. However, find at least 3 brand names, as each may differ in method of applications and material properties.
RE: Concrete Tile Roof
So should I be using 12 psf for the clay tile roof as well? Or should I use the 14 psf for the clay tile.
Another question, do small tower structures on wood roofs generally have sprinklers? Should I account for them in my total dead load?
I am assuming the following
Concrete/Clay Tile = 15 psf
Plywood Sheathing (1/2") = 2.0 psf
Framing = 2.5 psf
Insulation = 2.0 psf
Miscellaneous = 1.5 psf
Total = 23 psf
Am I missing something? There are no mechanical units on the tower roof.
RE: Concrete Tile Roof
Mike McCann
MMC Engineering
RE: Concrete Tile Roof
Mike McCann
MMC Engineering
RE: Concrete Tile Roof
RE: Concrete Tile Roof
RE: Concrete Tile Roof
RE: Concrete Tile Roof
BA
RE: Concrete Tile Roof
The architect finally decided to have a specific tile. He is going with US tile (two piece mission clay tile). Thats only 10 psf. So my total dead load is about 20 psf.