Reducing the height of the beams in a 1970s house?

  • Erstellt am 2012-11-27 08:30:48

TomB

2012-11-27 08:30:48
  • #1
Hello,

we want to completely renovate a large single-family house with a granny flat from 1976 (well-maintained original condition) in a very good location, including energy-related upgrades. According to a rough initial estimate from a renovation company, fulfilling our requirements will probably cost between 200,000 and 250,000 euros. We had roughly expected this order of magnitude.

The ceiling height is typical for the construction year, about 2.40 m (between floor and ceiling). Unfortunately, the interior doors of the house are also only just under 2 m high, typical for the construction year, and there are beams on the ground floor of the house where the height between the floor and the lower edge of the beam is also just under 2 m. I am 1.94 m tall and with shoes about 1.96 - 1.97 m. Passing through standard doors (which are mostly around 1.985 m) is sometimes uncomfortable for me. Sufficient clearance height at doors and beams/supports is therefore very important to me. From about 2.10 m upwards, I find doors and passages comfortable and no longer "oppressive."

The employee of the renovation company told me that raising the doors to about 2.11 m in non-load-bearing walls is not a problem. For raising the lintel, about 200 € per door should be expected, and for the new door depending on quality between 350-500 €. Since we want to replace the old doors anyway, the "only" additional cost for a higher door is about 250 - 300 €. That is definitely worth it to me!

With load-bearing walls and beams, raising the passage height is probably much more difficult and expensive. But how difficult and expensive is that? Can you help me with this?

I will attach sections of the building plans. I am especially interested in your assessment of beams 109, 110, and 113 as well as the door at pos. 111. How difficult/costly is it to raise the passage height of these parts?



 

€uro

2012-11-27 08:53:53
  • #2
In my opinion, a no-go (I'm not 1.94 m tall), especially in rooms with a larger floor area. Even in new buildings, you sometimes find clear room heights that feel downright oppressive! Many builders who bought according to the brochure usually notice this problem too late, when nothing can be changed anymore! Should we provide you with a structural analysis and cost planning? Ask the contractor, he will share his calculation with you!

Best regards
 

Bauexperte

2012-11-27 10:18:31
  • #3
Hello,


Then the location of the property must be very appealing, because with projected renovation volumes plus acquisition costs, (almost) a new building would also have been feasible.


To remove such a beam, the weight of the ceiling above it must be supported. Only then can the visible beam be removed and replaced by a beam flush with the ceiling. Of course, the respective ceiling thickness is crucial here to determine whether the new beam can actually be installed flush – and a structural engineer must be consulted; I wouldn’t rely solely on the statement of a renovator in your place.

From a cost perspective, it is an expensive "pleasure," as a lot of craftsmanship is required => supporting/shoring the floor ceiling, removing the old beam, preparing the ceiling to accommodate the flush beam, installing the new beam, finishing and closing the wall/ceiling including masonry/filler work. That amounts to several hours per beam to be replaced ... plus materials and plus costs for the new structural analysis.

Best regards
 

TomB

2012-11-27 13:00:58
  • #4
Thank you for your input.

@€uro: I can live well with a room height of 2.4 m. But of course, 2.7 m is nicer. Much more important to me is the height of the top edge of the window surfaces. If the window frame starts at 1.9 or even 1.8 m, it feels oppressive. It's really bad if you have to bend down to see the horizon. If the window (the glass surface) ends at 2.1 or 2.2 m, it feels open to me – even if the room height is only 2.4 m. I myself live in an apartment with "only" 2.45 m ceiling height but very high windows/glass surfaces.
High windows would also be relatively easy to implement in this house. The new windows can be raised by the height of the roller shutter box. Instead of roller shutters, we are planning exterior blinds for the most important windows anyway.

> Should we provide you with a structural analysis including a cost plan?

No, I am interested in different solution proposals on how such a thing can be implemented. And rough cost estimates. Bauexperte described an approach in his answer. Is there also the possibility to shorten existing beams in height and restore the lost stability, for example with a steel beam? I only need 10 cm in height. Maybe 5 cm would already be enough.

@Bauexperte:

> Then the location of the property must be very attractive, because with the
> forecasted renovation volume plus acquisition costs, a new build would have (almost) been feasible.

The property is located in the Stuttgart metropolitan area. Ludwigsburg district. 5 minutes to the train station and still adjacent to a water protection area and fields. It is very quiet. The location is really very nice. The plot is almost 600 m². In new development areas of the town, the square meter costs up to 380 euros. However, the location of the development area is not quite as nice... Here in the south it is just a bit more expensive than, for example, at the Mecklenburg Lake District :-(

Is the expansion of the existing beam absolutely necessary? I don’t need a continuous height of 2.4 m. For structuring, for example, the large living/dining room, I don’t find beams all that bad. Just a sufficient passage height should be there.
 

Bauexperte

2012-11-27 13:19:10
  • #5
Hello,


I assume that the installed beams are statically necessary – so if you remove something "below," it must be added "above" again to avoid compromising the house's stability along the entire length of the original beam. In this respect, plenty of "mess" is inevitable anyway, so in my opinion you might as well remove the entire beam directly and have it replaced with a new one flush with the ceiling.

If there are other possible solutions in this regard, only a structural engineer aware of the complete "old" statics can develop them.

Kind regards
 

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