Hello everyone,
We recently had an initial meeting with a general contractor regarding the construction of a single-family house.
He mentioned that the exterior walls will be built using Poroton T14 (24 cm (10 inches)) plus external insulation. When I asked about using Poroton T9 (36.5 cm (14 inches)) without insulation, he said that the T9 is not as good structurally as the T14. Additionally, if using the T9, it is necessary to apply a reinforcing mesh around the masonry to ensure structural stability.
I am not an expert when it comes to bricks, but based on the thickness (24 cm (10 inches) vs. 36.5 cm (14 inches)), I thought the “thicker” brick would also be better structurally.
Can someone clarify this for me?
Which parameter indicates “good structural performance” for bricks? Bulk density class? Compressive strength class?
We recently had an initial meeting with a general contractor regarding the construction of a single-family house.
He mentioned that the exterior walls will be built using Poroton T14 (24 cm (10 inches)) plus external insulation. When I asked about using Poroton T9 (36.5 cm (14 inches)) without insulation, he said that the T9 is not as good structurally as the T14. Additionally, if using the T9, it is necessary to apply a reinforcing mesh around the masonry to ensure structural stability.
I am not an expert when it comes to bricks, but based on the thickness (24 cm (10 inches) vs. 36.5 cm (14 inches)), I thought the “thicker” brick would also be better structurally.
Can someone clarify this for me?
Which parameter indicates “good structural performance” for bricks? Bulk density class? Compressive strength class?
Hi,
I am also a layman. The T9 in 36.5cm (14.4 inches) has very thin webs and many air chambers. That probably makes it somewhat more fragile. I cannot understand the issue with the mesh. At least here, the ceiling slab is being poured next week without any kind of mesh. Many general contractors have their favorites, so if you want 36.5cm (14.4 inches), I would look for a different contractor.
I am also a layman. The T9 in 36.5cm (14.4 inches) has very thin webs and many air chambers. That probably makes it somewhat more fragile. I cannot understand the issue with the mesh. At least here, the ceiling slab is being poured next week without any kind of mesh. Many general contractors have their favorites, so if you want 36.5cm (14.4 inches), I would look for a different contractor.
B
Bauexperte31 Jan 2016 23:37muttley schrieb:
When I asked about Poroton T9 (36.5cm (14 inches)) without insulation, he said that the T9 isn’t as good structurally as a T14. He also mentioned that when using T9, you need to apply a “mesh” around the masonry to ensure structural stability. Among other things, we have been building with 36.5cm (14 inches) Poroton for quite a while; we haven’t yet applied any “mesh” — whatever that is supposed to mean — around our masonry.
Best regards, Bauexperte
Maybe he meant the mesh netting that some builders place between the layers of Poroton blocks. This is part of the complete "bricks and mortar all-inclusive package" from Wienerberger. It is intended to prevent cracking, but it seems to be quite controversial.
Best regards,
Andreas
Best regards,
Andreas
And regarding the structural engineering:
The T9 block has very delicate webs and the raw material itself has a lower density. Therefore, the T9 has about 36 cm (14 inches) less compressive strength than the 24 cm (9.5 inches) T14 block.
The 24 cm (9.5 inches) T14, combined with external thermal insulation composite system (ETICS), will also provide better thermal insulation than the T9.
Best regards,
Andreas
The T9 block has very delicate webs and the raw material itself has a lower density. Therefore, the T9 has about 36 cm (14 inches) less compressive strength than the 24 cm (9.5 inches) T14 block.
The 24 cm (9.5 inches) T14, combined with external thermal insulation composite system (ETICS), will also provide better thermal insulation than the T9.
Best regards,
Andreas
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