ᐅ Exterior walls made of 15 cm calcium silicate bricks (also known as sand-lime bricks)
Created on: 26 Apr 2020 20:26
R
robinhood42
Hello building experts,
We are planning to purchase a semi-detached house with three floors and no basement. The exterior walls will be constructed with calcium silicate blocks, wall thickness 15 cm (6 inches), compressive strength class 2.0. I looked it up online and found the following: "A thickness of 17.5 cm (7 inches) is the minimum wall thickness allowed for load-bearing walls."
My question is: Is this something I should be concerned about, for example regarding the structural strength of the house or the possibility of cracks developing in the future? I know that in Germany everything is regulated and no building permit / planning permission is granted if the necessary building codes are not followed. However, I would also like to get an expert opinion from here.
Thank you.
We are planning to purchase a semi-detached house with three floors and no basement. The exterior walls will be constructed with calcium silicate blocks, wall thickness 15 cm (6 inches), compressive strength class 2.0. I looked it up online and found the following: "A thickness of 17.5 cm (7 inches) is the minimum wall thickness allowed for load-bearing walls."
My question is: Is this something I should be concerned about, for example regarding the structural strength of the house or the possibility of cracks developing in the future? I know that in Germany everything is regulated and no building permit / planning permission is granted if the necessary building codes are not followed. However, I would also like to get an expert opinion from here.
Thank you.
Vicky Pedia29 Apr 2020 20:15nordanney schrieb:
@ Vicky Pedia: A minimum thickness of 36cm (14 inches) regardless of the building material is complete nonsense. With sand-lime brick, you typically use 17.5cm (7 inches) blocks and then, for example, an external thermal insulation composite system (ETICS) starting from 18cm (7 inches).Thank you! I’ve learned something new again. You can’t know everything.Since these 15cm (6 inches) units have a higher bulk density (2.0) than the standard 17.5cm (7 inches) ones (1.4), I consider this unproblematic. However, so far I have only built exterior walls with 17.5cm (7 inches) sand-lime bricks. Also, 11.5cm (4.5 inches) interior walls can be load-bearing!