estimating pinwheel design footage

[Dan1]

Hi all I need to order tile, and am not sure how to figure out how many peices of what. Its a pinwheel design with 16's and 12's I need 130 sq.' Is there a formula for this?
Thanks again
dan

[Levi the Tile Guy]

in most cases the store you are ordering tile from will have a formula of how much of each tile you need to order. Probably around 65% 12's and 35% 16's but usually they will let you know.

[Dan1]

Hmm I thought it would be the other way around like 80% 16's and 20% 12's but Im sure like you say the dist. will probably have the answer for me, thanks for the reply

[bljack]

Convert tile to square inches and determine total area of pattern repeat
% of 12x12 in pattern = 144/400= 36% of pattern and the 16x16's will cover 64% of the area.

36% of 130 sf = 48.8 sf
64% of 130 sf = 83.2 sf

Add your waste factor and divide by the sf of each case.

[jgleason]

Pinwheel pattern is a 4 to 1 ratio. That is - 4 6x6 for every 1 12x12 tile. Here is a pic of the pattern....

[Rd Tile]

4 to 1.

More like one to one.

Look at it, the next 12" tile shares the others.

http://johnbridge.com/vbulletin/showthread.php?t=30525

[pitterpat]

Originally Posted by Rd Tile

4 to 1.

More like one to one.

Look at it, the next 12" tile shares the others.

What RD said. Take a look at the Daltile book, pg 92.

[Levi the Tile Guy]

The 1 to 1 is close but don't you figure that the 16's will take up more footage.

[Mike2]

I like Brian's numbers (bljack's), 64% and 36% (16" and 12" tiles respectively) of total square feet.

Since Dan's pinwheel is using a 16 and 12 combo, the references above to a 12 and 6 pinwheel won't work.

Here's the repeatable pattern.

[jgleason]

Sorry about that. Pulled it off some site and didn't pay enough attention to whether the data was correct or not.

[Bellsfloors]

One to One is correct but the square footage to each size is different. Say the larger tile is 144 square inches and the smaller is 36 square inches. Adding the two would be 180 square inches total. If you want to know the percentage of the larger then you would have to divide 144 by 180 which would be 80% of the total area of the two tiles. So if you have a total of lets say 100 square feet then 80% of the tile area would be the larger tile. This would be 80 square feet of larger tile and the rest would be the smaller tile.

I ussually look for a repeating pattern that could be divided out and stacked to continue the pattern without adding or subtracting additional tile. Take a look at my latest project and I had a lot to calculate here to figure the correct amounts of tile needed for this project.

http://bellsfloors.com/resized%20pho...d/DSC05553.jpg

[T_Hulse]

Very nice looking floor Tracy. Good job.

Hey Mike, what program did you use for your drawing?

Yep, 64%, 36%.

[pitterpat]

Originally Posted by pitterpat

What RD said. Take a look at the Daltile book, pg 92.

OPPs wrong, looked @ 12's & 6's pattern.

[opiethetileman]

go to daltile's website they have a chart for all patterns

[opiethetileman]

nice floor tracey how long did that take ya??? How many bottles of advil did u use??lol