Are the estimated costs of the general contractor for earthworks reasonable?

  • Erstellt am 2013-08-20 17:01:33

Orion

2013-08-22 01:05:44
  • #1
Hello again,

I think you misunderstood me.

1. It’s not that we had these enormous costs because our ground was not load-bearing. On the contrary: You need gravel because you need gravel because you need gravel. Unless you don’t mind your terrain around your house significantly settling and sinking in the first months/years! What that can mean for the exterior areas (stairs, paths, terrace...) and the house, you can imagine. Maybe we filled in a bit too much gravel... maybe even a bit more than necessary... but I definitely feel better about that than saving on this item!!!

2. I would seriously consider building without drainage. Guaranteeing rainwater or not. But where does it seep away? Where does it collect underground? I just like to know that it flows neatly past my house or the exterior wall of the basement. Are we even talking about the same thing? I’m talking about an underground drainage... meaning a properly installed drainage pipe that directs all water neatly past your basement wall.

3. Will you need a crane later? Probably yes. Then maybe a gravelled parking space needs to be prepared. Is that included?

4. Basically: Your general contractor (GU) will – I assume – probably perform his work properly for 2,400 euros. But the question in this case is probably less what he DOES than what he DOES NOT do. If your contract doesn’t state that he should dig and build the inspection shaft, then he won’t do it. Then you can renegotiate (which will probably be expensive) or you find another contractor (which means you have to coordinate between the two, and that’s exactly what you want to avoid with a general contractor). If it says he digs the trenches for the pipes, then he will do that. But that doesn’t mean he lays the pipes inside. And it certainly doesn’t mean he connects them to the sewer or water supply.

By the way, our experience: We received offers and their "standard construction descriptions" from several general contractors. It sounded wonderful to us and our architect wanted to review them. When we met with him two weeks later, the construction descriptions were full of markings, comments, and questions from him. And almost always it was not about what was included, but about what was not included. And that would never have occurred to us!
 

Lilik

2013-08-22 11:30:24
  • #2


Hello,

you cannot just build a drainage system like that. We have received guidelines from the municipality regarding wastewater disposal and water supply, and it states: "According to DIN 4095 and DIN 1986 Part 3, water from drainage pipes must not be discharged into sewage or stormwater channels. Safety drainages must be applied for approval from the water management authority on a case-by-case basis."

I believe in such exceptional cases the soil expert must confirm that drainage is necessary, otherwise you will not get such approval.

Regards
Lilik
 

Orion

2013-08-22 11:41:19
  • #3
Hello Lilik,

ok, you are right. To be honest, I’m not really concerned about the individual items... I can’t judge that from here and I don’t want to. I’m only concerned that many things are still generally not listed. A drainage was just one example, certainly not the most important of all.
 

Wastl

2013-08-22 13:27:40
  • #4
Hello Lilik, the DIN standards only state that the drainage must not be fed into the public network, right? That is why an ordinary building owner also needs their own infiltration shaft into which the drains or roof areas, paved paths, etc. are drained. And the infiltration shaft costs money,...
 

DerBjoern

2013-08-22 14:20:24
  • #5
For me, it is also regulated that I am not allowed to discharge rainwater into the sewer system. The water must infiltrate on the property. And even that has to be applied for (processing fees), and before the infiltration trenches are covered with sand again, this must be inspected by the municipality (even higher fees). If the municipality then has doubts, a smoke test is carried out (much higher fees). So simply letting rainwater infiltrate on the property is not...
 

humi

2013-08-22 14:59:21
  • #6
and then there are those who simply connect the drainage to the [Kanal]. by the way, there are quite a few of them...
 

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