Hello everyone,
After moving in last October, I now want to start working on the outdoor area this spring.
The surface to be paved has already been fully prepared by our groundworker, who spread and compacted the crushed stone base.
We have also already chosen the suitable paving stones and edging stones.
The first step will be to install about 100 linear meters (330 linear feet) of edging stones as a border.
These will be set in a roughly 30 cm (12 inch) wide bed made of about 10 cm (4 inch) lean concrete plus a back support (about 10 cm (4 inch) at a 45° angle).
I have now calculated the materials needed for this:
Required concrete: 100 m (330 ft) * 0.3 m (12 in) * 0.15 m (6 in) [length x width x height (simplified calculation including back support)] = 4.5 m³ (160 cubic feet) of concrete.
To mix this, I would need about 9 tons of gravel (0/16) and 1.5 tons of cement (60 x 25 kg (55 lb) bags).
Does this seem correct, or have I made a mistake somewhere?
Thanks in advance!
After moving in last October, I now want to start working on the outdoor area this spring.
The surface to be paved has already been fully prepared by our groundworker, who spread and compacted the crushed stone base.
We have also already chosen the suitable paving stones and edging stones.
The first step will be to install about 100 linear meters (330 linear feet) of edging stones as a border.
These will be set in a roughly 30 cm (12 inch) wide bed made of about 10 cm (4 inch) lean concrete plus a back support (about 10 cm (4 inch) at a 45° angle).
I have now calculated the materials needed for this:
Required concrete: 100 m (330 ft) * 0.3 m (12 in) * 0.15 m (6 in) [length x width x height (simplified calculation including back support)] = 4.5 m³ (160 cubic feet) of concrete.
To mix this, I would need about 9 tons of gravel (0/16) and 1.5 tons of cement (60 x 25 kg (55 lb) bags).
Does this seem correct, or have I made a mistake somewhere?
Thanks in advance!
I want to edge the lawn once with the brick pavers. It’s probably around 70-80 meters (230-260 feet). I was thinking of excavating about 20cm (8 inches) deep with a width of 20cm (8 inches). Then about 10cm (4 inches) of gravel on top, followed by a 5cm (2 inches) lean concrete layer, and then setting the bricks on top and pressing them in about halfway. The bricks should stick out about 2cm (1 inch) above the ground in the end.
Or is that too little and could I just do it with gravel only? We don’t have moles here because the soil quickly becomes quite clayey.
How can I mix normal concrete relatively easily myself? I won’t rent a concrete mixer for this. A big tub or something — is that how it’s done?! Lean concrete would be easier, where you just pour it directly into the hole, wet it with water, and that’s it.
If I calculate 0.2 x 0.1 x 60 meters (7 x 4 x 197 feet), I get 1.2 cubic meters (42 cubic feet) of concrete.
Or is that too little and could I just do it with gravel only? We don’t have moles here because the soil quickly becomes quite clayey.
How can I mix normal concrete relatively easily myself? I won’t rent a concrete mixer for this. A big tub or something — is that how it’s done?! Lean concrete would be easier, where you just pour it directly into the hole, wet it with water, and that’s it.
If I calculate 0.2 x 0.1 x 60 meters (7 x 4 x 197 feet), I get 1.2 cubic meters (42 cubic feet) of concrete.
Save yourself the effort and simply set the stones in gravel or crushed stone. The 10cm (4 inches) of concrete won’t add much benefit. After all, the stones don’t need to be supported on all sides, right?
Partially pressing them in won’t work either. For the curb stones, I usually poured concrete only 2cm (0.8 inches) above the planned height and was then able to tap them into place with a rubber mallet.
Mix concrete either with a mixer or alternatively in a tub. However, I would only recommend the latter for smaller quantities. For small amounts, I also wouldn’t buy cement and sand separately but would opt for pre-mixed bags instead. The price difference isn’t significant.
Partially pressing them in won’t work either. For the curb stones, I usually poured concrete only 2cm (0.8 inches) above the planned height and was then able to tap them into place with a rubber mallet.
Mix concrete either with a mixer or alternatively in a tub. However, I would only recommend the latter for smaller quantities. For small amounts, I also wouldn’t buy cement and sand separately but would opt for pre-mixed bags instead. The price difference isn’t significant.
All right, thanks. We will just lay the bricks on the gravel and tap them in. There will be soil on both sides in the end anyway. It just needs to create a neat edge to the lawn. The landscape gardener will deliver the gravel for the driveway anyway, so he can just deliver 2-3m³ (2.6-3.9yd³) more, and I can use that to lay the bricks.
Similar topics