Are drainage joints in the base area unnecessary?

  • Erstellt am 2016-11-05 22:27:43

DragonyxXL

2016-11-07 12:43:21
  • #1
Not exactly the same topic, but can terrain be piled up against a brick facade as shown in the sketch? How would water then drain on the inside of the brick? Would there also be slots there that would be "blocked" by the backfilling?
 

Knallkörper

2016-11-08 16:08:24
  • #2
The drainage openings at the bottom are, to my knowledge, never dispensable. The ventilation openings at the top, on the other hand, are dispensable with cavity insulation.

Drainage openings are also necessary above the windows (...).

@ : The drainage slots are then "raised". On the facing bricks that lie below ground level, a thick coating or a sealing slurry is usually applied. I believe not every facing brick is suitable for this.
 

Bauexperte

2016-11-08 23:55:48
  • #3

The red colleague competitor would not do/omit anything that would cause him trouble in the future

Drainage is ensured ... otherwise the standard you quoted would not have been passed. Is it sensible? What is sensible these days in house construction? Handing over a new building within 3 months – in my view – isn’t either; but who am I

Rhenish regards
 

Galaxie

2016-11-12 14:18:19
  • #4
The solution!

So, I received a call from the technical manager of our developer. The fact that no drainage joints are provided in the base area is intentional for the following reasons:

    [*]Water leakage at open joints has never been observed
    [*]The regulation with open joints was only introduced into the masonry standard in 1974. Until then, it was optional for over 70 years and not a single damage case was documented.
    [*]Moisture measurements have shown that "open" walls are about 4% more humid than non-ventilated walls.
    [*]The risk that moisture enters unhindered through the drainage joints is assessed as higher than the risk that water accumulates without drainage joints.

The technician also sent me a PDF file (Eurocode 6: Commentary and application aid of DIN EN 1996-2/NA) that proves all this and which I am attaching here. It contains further arguments.

I am completely convinced and now absolutely reassured.
 

Knallkörper

2016-11-12 21:11:09
  • #5
Hello.

Strange, in our new building I just observed water running out of the drainage joints.
 

Galaxie

2016-11-12 21:36:22
  • #6


Strange indeed. Was that maybe still during the construction?
 

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