Noise barrier wall - does it help?

  • Erstellt am 2019-05-30 14:53:14

South

2019-05-30 14:53:14
  • #1
Hello dear community,

since we have been waiting for the new development area for quite some time now – it has been dragging on for 1.5 years (!) – the city cannot agree on a project developer, we are currently looking for alternatives. Here we prefer farmsteads; if a barn is approved, the horses could also move along. Now we have focused on two properties. One of them is virtually being auctioned via a bidding process, we are in third place and therefore will probably not receive the contract. The other is also much nicer but has a significant disadvantage: the property borders directly on a country road (macro and micro location see picture). During rush hour about 1-2 cars per minute, in the evening it is quiet. The road is about 20 meters away from the house and one of the terraces. According to the Lower Saxony Building Code, fences up to 2 meters high may be built in the outer area without a permit. I was thinking about about 2.5 meters and would then apply for a building permit. The bedrooms face the back or side, only the guest room would be on the side facing the road.

Now there is the idea of building a noise protection wall towards the road. For this I have the following questions:

1. Does anyone have experience with this and have built a noise protection wall themselves or live behind a noise protection wall that was built at external cost? If yes, what material, how high, and how is the perceived improvement?

2. I know that the wall should actually be built quite close to the noise source. Furthermore, the effect of such a wall is also the less effective, the further it is built from the house/the terrace. Where would you place the wall?

3. Which material? I was thinking of a stone wall for the mass, and possibly plants in front for breaking the sound. The wall would rather reflect the sound. On the other side of the road there is nothing that will reflect the sound back. The gate to the driveway would also have to be relatively solid.

It would be great if you have opinions and/or experiences about this =)

 

South

2019-05-30 15:20:38
  • #2
Just found a calculation model on the internet. With our parameters and the [Lärmschutzwand] directly by the street, about 25 dba. If the wall is placed further into the garden and not by the street, only 14 dba. Clearly speaks in favor of building the [Lärmschutzwand] as close to the boundary as possible.
 

HilfeHilfe

2019-05-30 15:27:24
  • #3
Yes, but isn't the sound refracted and falls down?
 

Winniefred

2019-05-30 17:48:49
  • #4
1-2 cars per minute at peak times are nothing? If that little noise bothers you so much, I would rather keep looking.
 

South

2019-05-30 18:01:03
  • #5
fred I actually had to read it twice. I just thought, we are already married We currently live in Bremen, very centrally, but it is actually really quiet with a lot of birdsong. Therefore, we are not used to car noises. A friend grew up in such a house, according to her, she didn’t notice the traffic back then at all. But when she now visits her parents and sleeps there, she does notice it. The question is: 1. how quickly do you get used to it and 2. does the subconscious still perceive it as disturbing?

Therefore, I would like to reduce the noise at least. Ideally, I would of course buy another house where everything is right, but the market is completely wiped out in the countryside too =/ We have been searching for about 2 years, but very intensively for one year.

What exactly do you mean by falling down? I’m currently at a loss.
 

Winniefred

2019-05-30 18:47:25
  • #6
And I had to think twice about what you meant, but of course the wedding as a marriage ceremony and the wedding^^.

Just for fun, I counted cars during dinner. Holiday on the outskirts of a city with 600,000 inhabitants: Within 5 minutes, 1-5 cars per minute, which I find very quiet – during rush hour it’s significantly more and at night almost nothing. However, it’s not a country road with trucks and agricultural machinery.

If everything else fits, that would not be a reason for me to object. I think a wall and planting together with good windows is completely sufficient. I would casually consult or call the responsible building authority and check what might be roughly possible. You won’t get absolute silence regardless of the measures, so in your place I would ask the fundamental question whether you can live with some country road traffic or not, and then structurally implement what is possible. But also consider the costs, especially for a wall.
 

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