Custom shower plumbing question

Hey:
Ok Tiling a shower, and the homeowner requested me to tackle the plumbing also..Ok no problem I do it all the time, but they have handed me a box of Kohler body spray tiles,wall mtd shower heads,mixing valves, ect.. I have no problem handling it, but the shower is on the 2nd floor, and stubbed with 1/2 supply.. and getting 3/4 to it is SERIOUS.
My question is will 1/2 supply enough flow for 3 spray tiles,and 3 shower heads? and as usual time is ticking.. any advice will be much appreciated people
Thanks Frank
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wrote:

I'm NOT trying to be a wise-ass -- call Kohler????
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On Sat, 24 May 2008 16:00:37 -0700 (PDT), "Kickin' Ass and Takin'

thought about it, but it is memorial day weekend
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On Sat 24 May 2008 04:56:50p, Frank Robinette told us...

And this is a weekend job, right? My guess is that to provide enough velocity from all the heads, you'll either need rather high pressure or a larger feed. Having all that installed would have me believe these folks don't want a wimpy shower.
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On Sat, 24 May 2008 23:47:27 GMT, Wayne Boatwright

They saw a Brochure and just went crazy.. and I have 2 weeks for the job which includes moving a wall elect/plumbing/tile ect
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On Sat 24 May 2008 05:54:59p, Frank Robinette told us...

If you have 2 weeks for the job, I would concentrate on other issues and, as previously suggested, call Kohler as soon as possible. This is not something you'd want ot have to redo if it's not right.
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Frank Robinette wrote:

Here's what I would do:
Assuming city water, measure the supply pressure with water flowing. If they have ~50-60 psi, give it a go.
To avoid embarassment after all the tile work is up, I would rough assemble all the valves and heads out in the back yard/garage, etc.
Feed the Rube Goldberg with a garden hose (make sure the hose bibb is fed from the same point as the domestic piping; no reducing valve). Have the owner witness the sprays and sign off.
The pressure may be 5 psi greater at ground level than on 2nd floor, but that shouldn't be significant. You could even include a length of 1/2" pipe in the Rube setup to simulate the riser to 2nd floor.
For a couple hours setup time, you may avoid a huge battle later.
Jim
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On Sat, 24 May 2008 20:59:01 -0400, Speedy Jim

for fla. tomorrow, and I'm not lazy, but seems like some extra work, but I will keep it in mind...Thanks
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