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RE: Soccer Field on a Roof

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Sounds good. How do I get water from the soccer field to the roof deck?

Geofoam is not permeable, right?

T. William (Bill) Allen, S.E. (CA #2607)
Consulting Structural Engineers
33171 Paseo Cerveza, Suite 221
San Juan Capistrano, CA 92675
V (949) 248-8588 • C (949) 374-1536

-----Original Message-----
From: seaint-seaosc(--nospam--at) [mailto:seaint-seaosc(--nospam--at)] On 
Behalf Of Davis Parsons Sent: Friday, August 22, 2014 1:44 PM
To: seaint-seaosc(--nospam--at)
Subject: Re: [SEAINT-SEAOSC] Soccer Field on a Roof

Geofoam.  It is used as a fill under concrete slabs in this area all the 
time.  I have a stair project right now where geofoam is used to raise a 
raise floor area. Original slab difference is 5'-0".   4'-6" of geofoam is 
used with a 6" concrete slab to level the new and old floor levels.

*Davis G. Parsons II PE RA *
/Texas Engineer 42397//
Texas Architect  9462/
Fort Worth, Texas

On 8/22/2014 3:33 PM, T. William (Bill) Allen, S.E. wrote:
> Now that I know who is awake and working on Friday....
> :o)
> I have a project where the owner wants to put a soccer field on a roof.
> Don't laugh. Yes, the soccer field must be flat (or mostly so, slope
> of 1" in 10 feet to get the water to drain off of the 2 foot square tiles. 
> The roof below will slope at a much more significant slope. Architect
> wants minimum which is ¼" per foot. I want ½" per foot. We may

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