ᐅ Dig holes to pour concrete footings for fence posts

Created on: 15 Mar 2022 07:05
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Stefan2.84
Hello everyone, I am currently digging holes to set fence posts in concrete. So far, it has taken me about 7 hours for 12 holes. These are only about 30cm (12 inches) deep with a diameter of approximately 20cm (8 inches). I still need to dig around 25 more holes. The soil is very clayey and rocky. I removed the top 10cm (4 inches) of topsoil with a spade and then used a hammer and chisel to finish the rest. Does anyone have any ideas on how I could make this easier? I am hesitant to use an earth auger because I’m worried it might damage the bit due to the stones and rocks.
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Stefan2.84
18 Mar 2022 06:20
The interchangeable attachment would of course be an advantage. But I think the MWS will also be useful for me. Above all, it was delivered very quickly 🙂
One bag of screed concrete per hole?? I guess I underestimated that as well. I’ll have to come up with a solution for that too....
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dab_dab
18 Mar 2022 17:55
You can easily calculate it yourself: a 40kg (88 lb) bag of screed concrete yields about 20 liters (5.3 gallons) of earth-moist concrete.
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Stefan2.84
18 Mar 2022 18:27
The device arrived today and was tested immediately. Within a very short time, I drilled a hole 30cm (12 inches) in diameter and 80cm (31.5 inches) deep. At another hole, I hit stone/rock. However, from a certain depth onward, you cannot reposition the device. It will only follow the existing hole. This means that at depth, the diameter is about 12cm (5 inches)...
Tolentino18 Mar 2022 20:40
But then you also chose a diameter that is too small. Actually, the blade should have the desired diameter, and then you basically pull the soil out.
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Stefan2.84
18 Mar 2022 20:43
Yes, I deliberately did it this way hoping to be able to reposition the drill bit multiple times. With a larger drill bit, there would be a greater risk of getting stuck on a rock. This way, I can work around it, even though the hole becomes narrower towards the bottom....
Tolentino18 Mar 2022 20:46
Alright. Then you’ll also need a post hole digger to remove the soil from deeper down, or you can just leave it as is. What kind of fence will it be?