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Old 12-14-2007, 12:18 AM   #1
Lester De Guzman
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is this ok for a 6x8 platform?

trying to minimize cost as much as possible here so I was thinking of making a 3 layer platform that would be 6x8 in size. I don't know much about making a platform but I found a way to build the first 2 layers out of 3 4x8 sheets of plywood without wasting any wood. Just want to know if there are any problems building it this way.
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Old 12-14-2007, 07:09 AM   #2
Ahmik Jones
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Re: is this ok for a 6x8 platform?

While that is not ideal, in reality it is probably fine as the final layer will span the gap in the middle on the top of your picture, and most of the work will be done by the 4x8 at the bottom of your picture. Just be sure to use lots of srews on the middle layer and be very meticulous about keeping the layers flat and flush while attaching them. Make sure to use 1 and 1/4 inch srews for the first 2 layers and 2 inch screws for the top.
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Old 12-14-2007, 09:35 AM   #3
Lester De Guzman
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Re: is this ok for a 6x8 platform?

thanks for your input!
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Old 12-14-2007, 09:48 AM   #4
Tom Fetter
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Re: is this ok for a 6x8 platform?

I agree with Ahmik. Don't just rely on screws though - invest in a couple of tubes of premium construction adhesive too, and the thing will be very solid.

What will you be using for a squat rack? I work on a 6 X 8 platform, and it's plenty big enough for actual lifting ... but my cage sits on a "tongue" sticking out the back. While movable squat stands would prolly be OK, a 6 X 8 platform would get cramped if you had to share space with even a half rack.
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Old 12-14-2007, 10:11 AM   #5
Lester De Guzman
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Re: is this ok for a 6x8 platform?

well I don't have anything yet but I have been scouring ebay and craigslist for 3 days. I might get those ebay ones that are the topic of a certain thread.
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Old 12-14-2007, 01:27 PM   #6
Franklin Shogie
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Re: is this ok for a 6x8 platform?

is there a minimum thickness needed for plywood used in this application?

in other words, would 1/2" thick plywood work?
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Old 12-14-2007, 02:06 PM   #7
Tom Fetter
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Re: is this ok for a 6x8 platform?

Depends what's underneath.

My gym's in my attic ... I have a thick platform, to spread the load among a bunch of joists. I need a thicker platform, so I don't have plates nosing through the ceiling into my bedroom beneath.

OTOH, on a concrete garage floor, there's prolly not a whole lot of reason for more than 1/2" thickness ... to protect the weights and the floor.

t
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Old 12-14-2007, 04:56 PM   #8
John Kolody II
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Re: is this ok for a 6x8 platform?

Since you are going to be using 3 sheets to construct the first two layers of your 6x8 platform you may want to consider the following cuts. Leave two sheets whole 4x8, and cut one sheet into two pieces 2x8. You would then screw the two layers together overlapping the seams with the full sheets. Then top with two 4x6 stall mats. For a finished look on my own platform I ripped some left over ply that I had in the garge to about 2 1/4" and edged the platform. Some 1x3 material may work if you do not have access to a tablesaw depending on the thickness of the wood and mats used.

JK
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Old 12-14-2007, 06:56 PM   #9
Lester De Guzman
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Re: is this ok for a 6x8 platform?

John, I'm not sure I fully understand the way you constructed a 6x8 platform the way you described. Can you elaborate more for me? Its been a long day and my brain isn't functioning up to par.
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Old 12-14-2007, 11:45 PM   #10
John Kolody II
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Re: is this ok for a 6x8 platform?

Sorry if I was a bit confusing, it was the end of the day at work. Your cuts in your picture will yeild you what you want, no waste. However if you leave two sheets of plywood whole and cut one in half the long way you get your lumber in the proper dimensions to build a 6x8 platform with only 1 cut.

materials list
3 - 4x8 sheets of 3/4" plywood (23/32 CDX)
2 - 4x6 stall mats 3/4" thick (mine happened to be 47.5x71.5)

Directions
Cut 1 sheet of plywood in half to create 2 pieces of dims. 2x8
Layer them as the drawing shows to create a 6x8 platform.
Use 1 1/4" screws and some construction adhesive to hold evrything.

I did not use the adhesive but should have. The mats are heavy enough not to move but I did edge my platform with some extra strips of plywood I had leftover from other projects. I would use some adhesive if you do not put an edge band on your platform

You may need to trim the mats or the plywood to make everything fit neatly, my mats were undersized and I am living with some gaps but have not had a problem

Measure twice, cut once, and fingers are the hardest tool to replace if lost.
Good Luck
JK
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