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Old 06-20-2014, 07:37 AM  
NorPlan
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Default 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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Old 06-20-2014, 07:57 AM  
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19x.42x.42=3.35 cubic feet, 80# bag is .66 cubic feet 3.35/.66= 5.08 bags



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

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Old 06-20-2014, 08:22 AM  
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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

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Old 06-20-2014, 01:22 PM  
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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.
39.9 sounds about right
And now that I read it again, I see it is inches. oops
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Old 06-20-2014, 05:06 PM  
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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.

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Old 06-20-2014, 06:31 PM  
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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.
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Old 06-21-2014, 04:14 AM  
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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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Old 06-21-2014, 04:29 AM  
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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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Old 06-21-2014, 11:43 AM  
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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.
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@ just under $4.00 a bag....I'll go with that


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