M
marsel martin-14 May 2010 06:12Hello,
I have decided not to proceed with my original plan of building a garden staircase using concrete block steps. An alternative that seems easier for me is to build a staircase with paved granite edging stones.
The staircase will have an overall outer radius of about 4 meters (13 feet), a curve angle of approximately 90°, step width around 1 meter (3 feet), step height about 15 cm (6 inches), and a tread depth of roughly 32 cm (13 inches) on the outer edge and 24 cm (9 inches) on the inner edge. If I use granite edging stones as the front edge, measuring approximately 100 x 20 x 8 cm (39 x 8 x 3 inches), and then pave the risers with granite cobblestones, could there be a risk that the edging stones might tip forward? Should I set everything in concrete?
Thanks in advance for your help.
I have decided not to proceed with my original plan of building a garden staircase using concrete block steps. An alternative that seems easier for me is to build a staircase with paved granite edging stones.
The staircase will have an overall outer radius of about 4 meters (13 feet), a curve angle of approximately 90°, step width around 1 meter (3 feet), step height about 15 cm (6 inches), and a tread depth of roughly 32 cm (13 inches) on the outer edge and 24 cm (9 inches) on the inner edge. If I use granite edging stones as the front edge, measuring approximately 100 x 20 x 8 cm (39 x 8 x 3 inches), and then pave the risers with granite cobblestones, could there be a risk that the edging stones might tip forward? Should I set everything in concrete?
Thanks in advance for your help.
M
MODERATOR4 May 2010 16:14Hello,
a garden staircase must be constructed using proper stair components. You probably already realize that the edging stones cannot fulfill this function. If the edging stones are used as risers, they would only experience pressure from one side, which creates a risk that they could tip forward where there is no opposing pressure from the soil.
In contrast, properly installed block steps, according to regulations, will result in a solid and long-lasting staircase. Block steps are also available in natural stone appearance, so it does not always have to be concrete if you prefer something different.
a garden staircase must be constructed using proper stair components. You probably already realize that the edging stones cannot fulfill this function. If the edging stones are used as risers, they would only experience pressure from one side, which creates a risk that they could tip forward where there is no opposing pressure from the soil.
In contrast, properly installed block steps, according to regulations, will result in a solid and long-lasting staircase. Block steps are also available in natural stone appearance, so it does not always have to be concrete if you prefer something different.
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