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pgagne

03:03AM | 05/29/03
Member Since: 05/27/03
1 lifetime posts
Bvbasement
Hi All.
I am new here and wanted to ask a question.

I live in Central Maine. I.E. rocky terrain, cold winters and deep frost.

I am building a deck on my house. I have built several decks in the past and have had good success.

My plan was to put my post on footings. The footings would be dug 4-6" deep, 6-8" diameter. I would place "Sono-tubes" in the hole and fill w/ concrete. I would then anchor the 4X4 PT post to the top of the footing. This is how I have built my decks in the past.

I have been told by several people around here that they do not go through this labor intensive ordeal. Instead, they use "moon pads." I am not sure if this is the actual term as I have done several internet searchs and have found nothing on "moon pads."

Anyway this "moon pad" device is a concrete block that sits on top of level ground. The post would then attach to the top of the pad. The pad also sits on top of 2" of rigid, styrofoam type, of insulation. The theory is that frost does not move side to side, but only down.

The insulation beneath the pad would prevent the pad from moving through frost.

I have never heard of this before. It sounds a little 'hokey.' I am not sure if I should trust it. Call me old fashion ... but I've never done it that way.

Believe me, however, it sounds easier as digging holes into the rocky Maine terrain is less than fun.

Anyone have comments or suggestions about this.

I could sure use the help.

Thank You

GlennG

03:12PM | 05/29/03
The first place to start is by checking you local building code. Following any building code requirements is a must and should be looked into before you start.

I have been doing construction work for over 30 years and I am a firm believer in a good anchoring system whenever I build a deck. The posts on the decks I build are anchored to 10" diameter by 24" deep concrete pier footings.

Earth has a great potential for movement due to many external forces including freeze/thaw, wet weather vs. dry, etc. Then there is always the possibility or high winds getting under a deck in severe weather making one more good reason to anchor it securely into the ground.

Just my thoughts, maybe old fashioned but it has worked for me for over 30 years with NO problems ever.

Glenn

treebeard

02:38AM | 05/30/03
Member Since: 01/14/03
264 lifetime posts
Stick with the direction you first set out for yourself, no matter how labor intensive it seems to others. The easy way out is not always the best way, and you'll thank yourself later.
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