ᐅ Reading Drawings – What Do Elevation Measurements Mean?

Created on: 22 Jul 2020 22:00
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Heidi1965
In our drawing, the kitchen window sill height is listed as +1.06 m (3 ft 6 in). To me, this means a sill height of 1.06 m (3 ft 6 in) measured from the finished floor. With a kitchen counter height of 0.91 m (3 ft), this would leave 15 cm (6 inches) for things like power outlets. This is also how the kitchen designer calculated it. Now the bricklayer says that the sill height refers to the structural shell and that an additional 20 cm (8 inches) must be added to the raw floor level for underfloor heating and the screed. Then the window would only be 86 cm (2 ft 10 in) above the finished floor, making it 5 cm (2 inches) lower than the kitchen countertop. That can’t be right. What is correct?
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kbt09
22 Jul 2020 23:14
And regarding the kitchen windows, the plan explicitly states ... "Countertop runs into the window" ... this should have been clarified at the latest by then, and the kitchen studio should have noticed it by that point as well.
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Heidi1965
22 Jul 2020 23:18
True. I could come to terms with that. But the kitchen counter is supposed to be 91 cm (36 inches) high. I think I need to make some calls tomorrow.
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Lumpi_LE
22 Jul 2020 23:23
Yes, referring to the structural dimensions it would be too low, but for the finished height it would be too high. A working height of 1.06 m (3.5 ft) would only be reasonable if both of you are close to 2 m (6.6 ft) tall.
11ant22 Jul 2020 23:24
Heidi1965 schrieb:

How should the +1.06 be understood here? For the living spaces, it says +1.00.

It means 1.00 (+/- tolerance!) or 1.06 (+/- tolerance!) meters above 0.00 – but here lies the main issue: whether 0.00 refers to the finished ceiling height reference point (OKRFB) or the top edge of the finished floor. Usually, it means the top edge of the finished floor, but this assumes that the difference between the rough floor and the finished floor actually matches the plan – and that’s where the problem lies. Neither the bricklayers, nor the screeders, nor the tilers are precision workers. For good reason, people say “rule of thumb” and not “rule of angels’ hair.”
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matte
22 Jul 2020 23:29
Regardless, this can hardly be the final construction plan for the structural builder. From my experience, the specifications always refer to the shell construction, such as the raw floor slab, raw ceiling, etc. The plaster will also be removed later.
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User0815
23 Jul 2020 02:10
In my (working) plans, the reference point for the heights was indicated at the top right. So please check the correct plans to see what is noted there.