My project is a 28' X 46' half court basketball court I want have
poured. Please keep in mind I live in Maine a rather cold climate
(1) I am going to remove the top soil down approximately six inches.
(2) I am going to set up my forms using 2" X 6's flush with the
relative land surrounding the court.
(3) I am going to lay 2" foam board issulation as a base which the
concrete will be poured over.
(4) I will use the appropriate amount of rebar and bricks to hold them
the correct height.
(5) I am going to have a professional come in to do the pour and run
the boat float(?) to get a smooth playing surfice.
(6) I am going to purchase red dye so the cement has a nice look I am
thinking the rust red. (this will be poured in the Cement truck)
(7) lastly I will surround the outside perimiter with 2' wide foam
board buried beneath the top soil to prevent frost from getting beneath
I am sure there are steps i have left out like the hole that will be
deeper where the inground hoop will be placed.
My questions are:
Do i need to go four inches thick? or would three be ok?
Am I asking for trouble if I don't put down gravel? If so how much do i
need? will I need to rent a tamper?
How deep should the outside edges go? do they need to be on foam board?
would six inches be enough?
I would appreciate any input in any areas you feel I may be missing...
You have a great website!!!!!
Why on earth would you insulate the slab? (Unless you plan on putting a shed
there later or something.) The foam board will do zero to prevent frost
heave. Heave results from inadequate drainage under the slab. A rebarred
slab with adequate gravel layer and footings, probably poured
monolithically, will be just fine. Your local concrete flatwork comany can
give you the approproate slab thickness and footer requirements for your
This is basically a patio- pour it like one.
2cents worth for free,
think michigan is pretty much the same for cold as maine - so that
project for me, here would go like...
12" - 18" depth any less = no warrenty
bottom / sides of excavation covered in landscape fabric (not plastic
cheap stuff - fabric.)
drainage system out of aggregate to daylight / drywell.
21aa limestone aggregate to 2" shy of aggregate grade - tamped per 4"
cover with fabric.
you want to end up with a completly socked aggregate base.
builders sand to grade (bottom of slab) moisten before pour.
4" if no vehicle traffic is to be expected - 6" if so
6 bag fibre renforced concrete
use coated rebar if possible
CLOSED CELL POLY FOAM expansion joint material, not the oily stuff.
(example: http://www.apscork.com/apscork/closedcell.shtml )
smooth trowel finish
apply color(s) of choice in a court paint, like Duracourt Tennis Court
Paint, or equivalent. Stencils are available for correct markings if
good luck and have fun.
advise worth price charged
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