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[Solved] Edging 70m: Calculate Sand & Cement Requirements - 1.5 tons Sand, 10 Bags Cement?

minimaxi 34881 6
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  • #1 19030462
    minimaxi
    Level 15  
    Someone of you will tell you how much sand and cement are needed on average for concreting about 70 meters. concrete edging under the ankle?
    The calculations give me about 1.5 tons of sand and 10 bags of cement - what do you think? How much to order? :)
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  • #2 19030558
    osiniak75
    Level 35  
    If you have the opportunity, buy a ready-made skinny from a concrete plant, what you gave 1.5 tons of sand and 106 bags of cement are some strange proportions because 106 bags are over 2.5 tons of cement. With a sand-cement ratio of 3:1, you already have a strong mix.
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  • #3 19030579
    minimaxi
    Level 15  
    There were supposed to be 10 bags :P
    and I counted: 1/2 Base x height x length = 0.1 x 0.2 x 70 = 2.1 m3 of concrete, but I will do it more pointwise, so I thought as above.
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  • #4 19030970
    osiniak75
    Level 35  
    You don't have enough sand for 2 meters of concrete, you won't even make 1 meter of these 1.5 tons. For concrete, gravel would come in handy.
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  • #5 19033027
    retrofood
    VIP Meritorious for electroda.pl  
    I was doing the floor and asked the guy who sells both sand and cement about the amount. It hit 105%, which means I have minimal left. They know and will advise.


    osiniak75 wrote:
    For concrete, gravel would come in handy.

    If there is no vibrating table, I do not recommend gravel. There will be holes.
  • #6 19033078
    r103
    Level 36  
    The author of the thread probably means something like this:
    Edging 70m: Calculate Sand & Cement Requirements - 1.5 tons Sand, 10 Bags Cement?

    There is nothing to worry about "holes" - and concrete would be useful, yes, strongly-graveled so that the curbs do not sink,
    but with probably self-made amateur /no need to hurry/ - you can also give the cement mortar and put some pebbles so that they don't sink...


    As for the proportions - 1.5 tons of sand is a cubic meter, 10 bags of 25 kg - 250 kg of cement is a little bit, but you can always buy more?
  • #7 19044730
    minimaxi
    Level 15  
    Thanks gentlemen. I did it myself with a concrete mixer and I didn't want to play with ready-made concrete, because I don't have transport, and everything costs money...
    Generally, the formula: 0.5 x Base x Height x Length (in [m]) gives an approximate amount of m3 of ready concrete and passes the exam - that's how I calculated. You still need to switch to the amount of gravel and cement - as colleagues wrote above.
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Topic summary

The discussion revolves around calculating the required amounts of sand and cement for creating a concrete edging of approximately 70 meters. The original poster estimated needing 1.5 tons of sand and 10 bags of cement, but responses indicated that these proportions may be incorrect. A common recommendation is a sand-cement ratio of 3:1, suggesting that 10 bags (250 kg) of cement is insufficient for the volume of concrete needed. Additional advice included considering gravel for better structural integrity and consulting local suppliers for accurate measurements. The poster confirmed using a concrete mixer for the project and acknowledged the need to adjust calculations based on the actual materials used.
Summary generated by the language model.
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