DIY Home Improvement, Remodeling & Repair Forum > Replacing 6 X 6 Timbers with Concrete...

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06-20-2014, 07:37 AM
NorPlan
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Replacing 6 X 6 Timbers with Concrete...

We have a number of Walkways that were Laid using 6 X 6 Timbers as both Border and Support holding the Interlocking Stone in place.. Problem now is the timbers have rotted..Solution now is to replace with Cement..

Having said all that, I'm drawing a blank figuring out the formula on how many Bags of Cement I'd need...I have a total of 4 strips for a total of 230"L X 5" H X 5" W .... I plan on using masonite strips to form a solid wall on the weak side ie: Grass & Sand..... Cheers. Thanks...

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06-20-2014, 07:57 AM
bud16415
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19x.42x.42=3.35 cubic feet, 80# bag is .66 cubic feet 3.35/.66= 5.08 bags

06-20-2014, 08:02 AM
nealtw
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5/12 x 5/12 x 230= cubic feet the cheepest 1x4 or 6" shiplap is what I would use

Last edited by nealtw; 06-20-2014 at 08:04 AM.

06-20-2014, 08:22 AM
bud16415
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Quote:
 Originally Posted by nealtw 5/12 x 5/12 x 230= cubic feet the cheepest 1x4 or 6" shiplap is what I would use

5/12 x 5/12 x 230=39.9 cubic feet

5/12 x 5/12 x 230/12=3.35 cubic feet

06-20-2014, 01:22 PM
nealtw
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Quote:
 Originally Posted by bud16415 5/12 x 5/12 x 230=39.9 cubic feet 5/12 x 5/12 x 230/12=3.35 cubic feet
Give your head a shake and start over, then tell us why you devided the ft to inches.
And now that I read it again, I see it is inches. oops

Last edited by nealtw; 06-20-2014 at 01:58 PM.

06-20-2014, 05:06 PM
kok328
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For 5"x5"x230", you will need .12 yds. of concrete as follows:

40# bags = 11
60# bags = 8
80# bags = 6

The calculator has never let me down so far.

06-20-2014, 06:31 PM
nealtw
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Quote:
 Originally Posted by kok328 For 5"x5"x230", you will need .12 yds. of concrete as follows: 40# bags = 11 60# bags = 8 80# bags = 6 The calculator has never let me down so far.
show off

06-21-2014, 04:14 AM
bud16415
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Quote:
 Originally Posted by nealtw Give your head a shake and start over, then tell us why you devided the ft to inches. 39.9 sounds about right And now that I read it again, I see it is inches. oops
Shaking my head hurts. To many stones rolling around.

I once had a maint guy come in and ask me to figure his driveway. His wife had ordered the mix for the next day after taking many measurements of his forms. She came up with 76 yards needed. I came up with 9 yards. Normally that wouldn't have been a problem but she was the head of the math dept at PSU and written several calculus books. He was in a pickle. Fortunately the guy at the plant questioned it and sent someone out to make sure and found her math error.

Just a smudge over 5 bags I say. Buy 6 to be sure and then let it harden up in the corner of the garage. That's what I always do.

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06-21-2014, 04:29 AM
bud16415
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Slightly off topic, but if it were mine I would fix I length of rebar in the center of your forms. 5x5 is not much cross section setting above the frost line. The bar will keep it together when it cracks.

With bigger pours I form a pad some place useful with one side loose for any extra and then close it in when I see what I have left over.

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06-21-2014, 11:43 AM
NorPlan
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Quote:
 Originally Posted by bud16415 Shaking my head hurts. To many stones rolling around. Just a smudge over 5 bags I say. Buy 6 to be sure and then let it harden up in the corner of the garage. That's what I always do. Sent from my iPhone using Home Repair
@ just under \$4.00 a bag....I'll go with that

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