ᐅ Pouring a slab foundation (4x4 m) yourself: Is a concrete mixer suitable?
Created on: 27 May 2021 11:26
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MaxMustaman92
Hello,
I want to create a concrete slab foundation with dimensions of 4m x 4m x 20cm (13ft x 13ft x 8 inches). In about one month, a small garden shed made of 175cm (69 inches) calcium silicate bricks will be built on top, which should later be used to store tools and equipment with heavy weight.
The planned layers beneath the slab foundation from top to bottom are: PE foil, insulation, and a compacted gravel layer. The total depth of all these layers is 60cm (24 inches), plus the 20cm (8 inches) slab foundation. The surrounding strip footing (frost protection) is planned to be 30cm (12 inches) wide and 90cm (35 inches) deep.
This results in approximately 3.2 cubic meters (113 cubic feet) of concrete needed, which I plan to mix myself in a ratio of 1:4 (480kg cement: 1920kg gravel + 240 liters water).
Questions:
1. Is a concrete mixer still suitable for this amount, or should I hire a company to deliver ready-mix concrete? I would prefer to avoid the latter due to cost reasons if possible.
2. Are there any other recommendations or tips for carrying out my project?
I want to create a concrete slab foundation with dimensions of 4m x 4m x 20cm (13ft x 13ft x 8 inches). In about one month, a small garden shed made of 175cm (69 inches) calcium silicate bricks will be built on top, which should later be used to store tools and equipment with heavy weight.
The planned layers beneath the slab foundation from top to bottom are: PE foil, insulation, and a compacted gravel layer. The total depth of all these layers is 60cm (24 inches), plus the 20cm (8 inches) slab foundation. The surrounding strip footing (frost protection) is planned to be 30cm (12 inches) wide and 90cm (35 inches) deep.
This results in approximately 3.2 cubic meters (113 cubic feet) of concrete needed, which I plan to mix myself in a ratio of 1:4 (480kg cement: 1920kg gravel + 240 liters water).
Questions:
1. Is a concrete mixer still suitable for this amount, or should I hire a company to deliver ready-mix concrete? I would prefer to avoid the latter due to cost reasons if possible.
2. Are there any other recommendations or tips for carrying out my project?
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nordanney28 May 2021 08:35Steven schrieb:
I have the exact opposite opinion. My motto is: More is better.But you have to admit that the machine(s) could easily stand on paving slabs. Like on any normal sidewalk or paved path.@TE: Parking spaces at Aldi or in front of your house can support a car and/or truck. And those are "just" paved. 😉
nordanney schrieb:
But you have to admit that the machine(s) could easily stand on paving slabs.Hello nordanneyI admit that.
I’m just a bit extreme.
And since I’m doing everything myself, it only costs the additional materials.
Steven
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hanghaus200028 May 2021 08:57Steven schrieb:
Hello nordanney
I admit that.
I tend to be a bit extreme.
And since I do everything myself, it only costs the extra materials.
StevenBut then you forgot the bitumen felt underneath and after the first layer of bricks?As a saver, I would have made it a little longer and wider to increase the value. Then it would count as a garage. 😉
hanghaus2000 schrieb:
Did you forget the bituminous membrane at the bottom and after the first course of blocks? Hello hanghaus,
I installed a horizontal damp-proof course. You can’t see it in the picture.
Steven
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