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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Stefan2.8418 Mar 2022 20:48I will now widen the side walls a bit using a rotary hammer and a chisel, and then it should fit. It will be a standard wooden fence with 1.8m (6 feet) wide panels.
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Stefan2.8418 Mar 2022 21:11No, no chance. There are fist- to head-sized stones everywhere. But the earth auger manages to work around them well. However, these stones have to be removed by other means.
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WilderSueden18 Mar 2022 22:24dab_dab schrieb:
You can easily calculate it yourself: a 40kg (88 lb) bag of screed concrete produces about 20 liters (5.3 gallons) of earth-moist concrete And a 60cm (24 inches) deep hole with a 15cm (6 inches) diameter equals about 17 liters (4.5 gallons).
We don’t learn for school, but for life. The stuff from math class is sometimes useful on the construction site 😉
Question for the experienced, beyond the theoretical manufacturer recommendations:
Is it currently safe to pour a pier foundation (30cm x 30cm x 80cm) (12in x 12in x 31in) without concern, even though nighttime temperatures occasionally drop to single-digit negative degrees Celsius?
Is it sufficient to cover the foundation (top of footing below grass level) with polystyrene insulation and simply allow a few extra days for curing?
Is it currently safe to pour a pier foundation (30cm x 30cm x 80cm) (12in x 12in x 31in) without concern, even though nighttime temperatures occasionally drop to single-digit negative degrees Celsius?
Is it sufficient to cover the foundation (top of footing below grass level) with polystyrene insulation and simply allow a few extra days for curing?