Terrace on a hillside on stilts - wood or steel better?

I have now made the following proposal to my architect. What do you think about it?

And does it conflict with the textual statute?

"Balconies, subordinate projections:
Balconies, canopies, and ground-floor extensions are permissible as subordinate projections within the meaning of Art. 6 para. 8 of the Bavarian Building Code (BayBO) and may protrude up to a maximum depth of 1.5 m beyond the building boundary. Other protruding structural elements are not permitted, deviating from Art. 6 para. 8 BayBO."

And does it conflict with the text regulation?

With a depth of 1.5 m, basically yes - however, I do not see any protruding component here in the sense of the regulation. Except (max. by 84 cm compared to the adjacent terrain slope) the terrace does not protrude at all. In my assessment, it remains below the maximum upper edge of the finished ground floor level "at ground level." In my opinion, a reinforced terrain embankment is not a protruding component in the sense of a regulation that is probably meant to restrict extensive front door canopies or wind-catching bays.

With a depth of 1.5 m basically yes - however, I do not see any protruding component here in the sense of the regulation. Except for (max. by 84 cm compared to the adjacent slope of the terrain) the terrace does not project forward at all. In my assessment, it remains below the maximum top edge of the finished floor ground floor "at ground level". A stabilized terrain fill is, in my opinion, not a protruding component within the meaning of a regulation that probably aims to control extensive front door canopies or wind catchers.

That already reassures me.

I have 2 appointments next week to estimate the costs of the steel structure. I am curious how expensive it will be.

Compared to the old plan, I am then still about 7.5k€ in the plus without steel beams, without terrace sub- and superstructure made of wood, without railing, and without additional cost for cellar plaster. The terrain will already be excavated and at the landfill, L-stones set. In other words, the additional costs will feel like about 18.5k€.

Do you see it the same way?

They will then be buffered by a savings buffer and the extra position for the outdoor area (20k€).

If the structure then costs 25-30k€, another idea will have to be found.

Hello Zaba12

I wouldn't use a carrier structure there. Extend the floor slab around the terrace, build 2 walls from the basement under the terrace, and a concrete ceiling on top of that. This would then be the floor of the terrace. I think this would be the more cost-effective construction method.

Steven

Hi Steven,

our construction coordinator also made that proposal and called the structural engineer on vacation to ask what the fun would cost. A freestanding thermally decoupled terrace from the floor slab (6x3m) costs €6000 net.

The problem here is that the dimensions do not reach the carport and also not the western terrace door.

The last sketch here in the thread is in my view the optimum area in combination with the L-bricks.

This week the report for the soil analysis will also arrive. If there is too much debris or organic material in it, then the idea with 900m³ of loose excavated soil will quickly be off the table.

It remains exciting.

EDIT: Another idea would be to use 2.55 L-bricks to at least form the supports. That is, 3 L-bricks (2 outside & 1 in the middle) on the garden side in front of the terrace head. However, it would then only be the supports. We would still need beams that would have to be attached to the house so that the terrace substructure can be placed on them.

Hello Zaba12

you are working with 255 L-blocks. They are expensive and really heavy.
As I said, I would extend the base slab around the terrace (you need a foundation or base slab for the L-blocks anyway) and instead of the L-blocks, build a 30 cm masonry wall. On top of that a cantilevered ceiling. Considering this during the shell construction cannot be particularly expensive. In any case, it is cheaper than dealing with such huge L-blocks.

Steven