ᐅ Cast-in-place exposed concrete entrance platform construction
Created on: 27 Feb 2024 09:38
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danielg40
Hello,
I would like to create a concrete platform in front of our front door as exposed concrete.
2 x 0.9 m (3.3 x 3 feet) and about 20 cm (8 inches) high.
It should be just a single low step.
Later, I plan to drive over it with the paving stones.
What exactly should I keep in mind?
Of course, smooth formwork panels.
I also have a concrete vibrator.
(In the past few weeks, I already poured 7 tons of concrete for the garage construction, ring beam, and lintel, but in those cases, the appearance wasn’t important;-))
We have a 1 m (3.3 feet) roof overhang and basically no precipitation there apart from drizzle, but I still plan to create a 1% slope.
From what I’ve read, I should use a good ready-mix concrete, like C25/30 with 0-8 mm (0-0.3 inch) aggregate?
I would place one layer of reinforcement mesh in the middle.
It basically only has to hold its own weight, but it must be smooth.
Some roughness should be preserved to avoid it becoming slippery.
For separation from the facade and front door, I would lay an 8-10 mm (0.3-0.4 inch) thick building protection mat?
That would leave the gap at the door and facade visible.
Can I later fill that with something like Sikaflex Pro 1 concrete gray 1K polyurethane sealant?
For the chamfer, I was thinking of using 45-degree triangular wooden wedges like shown in the picture?
Attached are a photo of our entrance and an image of how I imagine the platform.
Afterwards, I would seal it somehow.
Any tips and suggestions?
I would like to create a concrete platform in front of our front door as exposed concrete.
2 x 0.9 m (3.3 x 3 feet) and about 20 cm (8 inches) high.
It should be just a single low step.
Later, I plan to drive over it with the paving stones.
What exactly should I keep in mind?
Of course, smooth formwork panels.
I also have a concrete vibrator.
(In the past few weeks, I already poured 7 tons of concrete for the garage construction, ring beam, and lintel, but in those cases, the appearance wasn’t important;-))
We have a 1 m (3.3 feet) roof overhang and basically no precipitation there apart from drizzle, but I still plan to create a 1% slope.
From what I’ve read, I should use a good ready-mix concrete, like C25/30 with 0-8 mm (0-0.3 inch) aggregate?
I would place one layer of reinforcement mesh in the middle.
It basically only has to hold its own weight, but it must be smooth.
Some roughness should be preserved to avoid it becoming slippery.
For separation from the facade and front door, I would lay an 8-10 mm (0.3-0.4 inch) thick building protection mat?
That would leave the gap at the door and facade visible.
Can I later fill that with something like Sikaflex Pro 1 concrete gray 1K polyurethane sealant?
For the chamfer, I was thinking of using 45-degree triangular wooden wedges like shown in the picture?
Attached are a photo of our entrance and an image of how I imagine the platform.
Afterwards, I would seal it somehow.
Any tips and suggestions?
D
danielg4027 Feb 2024 11:43Yes, I just looked at a few pictures, so of course, it looks familiar.
But visually, it’s not quite right, and dirt is probably the bigger issue anyway.
My biggest question is how to handle the wall connection or the separation.
But visually, it’s not quite right, and dirt is probably the bigger issue anyway.
My biggest question is how to handle the wall connection or the separation.
H
hanghaus202327 Feb 2024 12:04Which direction does the entrance face?
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danielg4027 Feb 2024 12:38Facing north
At the level where the excavator is standing, the paving edge should be roughly at that height later on. Possibly about 5cm (2 inches) higher.
At the level where the excavator is standing, the paving edge should be roughly at that height later on. Possibly about 5cm (2 inches) higher.
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danielg4027 Feb 2024 12:44I just thought of something.
I plan to extend the paving later so that it runs along the bottom of the platform.
If I only pour the platform 15cm (6 inches) high now and then excavate freely later, the compacted gravel base beneath the concrete platform could break away at the edges.
Would it be better to pour the platform down to 25–30cm (10–12 inches) around the outside, where the paving will later connect underneath (the green area in the drawing is concrete), so I have a clean edge to align the paving against?
I plan to extend the paving later so that it runs along the bottom of the platform.
If I only pour the platform 15cm (6 inches) high now and then excavate freely later, the compacted gravel base beneath the concrete platform could break away at the edges.
Would it be better to pour the platform down to 25–30cm (10–12 inches) around the outside, where the paving will later connect underneath (the green area in the drawing is concrete), so I have a clean edge to align the paving against?
D
danielg4027 Feb 2024 12:46mr.xyz1 schrieb:
Why have a platform and lose the accessibility?Because we like it, and we’re only in our mid-30s. In 30–40 years, a ramp can easily be added there.
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