Guy wants to make a 4×5 foot drywell lid out of 2×6 t&g ACQ and cover it with a foot of dirt. Said all he wants is 25 years out of it.
I’m thinking he should cap it with concrete instead.
Think he can get that kinda mileage out of the ACQ?
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If it weren't for the falling hazard I'd try it. Otherwise I'd be concerned about anothe baby Jessica.
Jon Blakemore
What if the "guy" only makes 15 years, leaves no will with peritnent details, at 25 years we have a "manfall trap"......I vote for the concrete suggestion!
..................Iron Helix
ok, how thick should the concrete pad be then?
Precast plant will make it, deliver it and maybe even set it for about $150. As long as it's not a septic tank cover, which will require the health department permit, the septic tank company's permit and a jillion inspections to evaluate your tank, your field, your water supply and whatever else they can think of.
How thick you asked? 4-6 inches with #4 or #5 rebar both ways and a couple of handles on the top for grins and groaning.
Good lord man you scare me! :o)
a rule of thumb---short spans of concrete (less than 8 ft w/little loading!
1 inch of depth of concrete per foot of span, be sure to add #4 rebar @ 6" O,C, in bottom third of slab. Six bag mix, keep moist for a week.
So that is 5 foot span and at least 5" thick......2x6 forms look good.....about 9 cuft of concrete/1/3 yard ready mix/14 bags 80 # premix plus one 90 # portland to beef up the premix.
...............Iron Helix
Is the drywell filled with stone, or is it just a big hole in the ground?
Non-mortared concrete block stacked perimeter. Gravel floor.
Pre cast will be cheaper than probably materials alone for job-built - if it is a stock size. All bets are off if it is custom work. Most hoe operators will be happy to lower it on for you and generally have the chains and hardware required to hook it to their bucket. I suspect that you aren't going with precast drywell sections either - might want to reconsider that too. Around here two sections of drywell with base, lid, and delivery included will run you about $500 CDN ($375 US). That's 4' diameter, 6' deep and 200 holes of percolatin' power. Pretty hard to beat it for the money unless your labour is free.
Wally