ᐅ Floor plan design for a two-family house on a hillside

Created on: 16 May 2017 14:23
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sichtbeton82
Hello everyone,

I would appreciate your feedback on the floor plans.

Development Plan / Restrictions:
· Plot size: 1,200 m² (18 m (59 inches) wide)
· Slope: south-facing hill, street to the north
· Site coverage ratio: 0.3
· Floor area ratio: 0.6
· Building envelope, building line, and boundary: see "enlarged building envelope" 12 x 14 m (39 x 46 feet)
· Edge development: garages
· Number of parking spaces: 3 required according to building authority
· Construction type: open building layout
· Building setback: 3 m (10 feet)
· Roof type: pitched roofs 15-30°, hipped roofs to be avoided, see regulations
· Orientation: ridge direction of the buildings parallel to each other
· Exterior design: see section 6 of the regulations


Homeowners’ Requirements

Preliminary: The homeowners (born 1982 male, 1988 female, and two children born 2014 female, 2016 male) want to live on two floors (basement and ground floor). A third children’s bedroom should also be included. The third floor (attic) should be accessible barrier-free.

· Style: Bauhaus (optionally exposed concrete)
· Roof design: large south-facing side (for solar panels, photovoltaics)
· Building type: two-family house
· Basement and floors: basement, ground floor, attic
· Number of occupants and ages as above: (2 + 3 in basement and ground floor, 2 + 1 in attic)

o Space requirements attic: 2 bedrooms, 1 flexible floor plan bathroom, open living/dining/kitchen area, utility room
o Space requirements ground floor: 1 master bedroom, walk-in closet, master bathroom, large open living/dining/kitchen area, wardrobe, storage room
o Space requirements basement: 3 children’s bedrooms, children’s bathroom, optional play corridor, boiler room, cellar, utility room

· Open or closed architecture: open
· Conservative or modern construction: modern
· Kitchen: open kitchen with island (at least on ground floor)
· Balcony, roof terrace: likely sensible on all three floors considering exposed concrete
· Parking spaces: carports if possible, which can later be converted into garages (initial cost saving)
· Heating/thermal technology: air-to-water heat pump (underfloor heating), optional photovoltaics
· Windows: large window areas on the south side, optionally wide, low windows above the kitchen worktop on the ground floor
· Energy efficiency: KfW 55 standard
· High sound insulation (especially for the ceiling of the attic, separate residential unit)

East view: sketch with stacked rectangles, diagonal line and hatched triangle.


Elongated plot marked in yellow on a site plan with parcel numbers.


Ground floor plan: living/cooking area, master bedroom with walk-in closet, bathroom, WC, hallway, terrace.


Hand-drawn basement floor plan with hallway, cellar room, bathroom, and three children’s bedrooms.
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haydee
22 Feb 2019 07:52
We went with the belt-and-braces approach:

WU wall, then a bitumen coating, insulation on the outside, insulation on the inside.

Great if you have stairs soon.
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sichtbeton82
26 Feb 2019 07:14
And now the preparations for the basement ceiling are underway.

Building a house: shell construction with concrete walls, wooden beams, ladder, building materials on construction site.
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sichtbeton82
28 Feb 2019 06:41
There it is, already in place! The ceiling on the basement level. This week, about two-thirds of the walls will be filled with concrete. Then it’s carnival season for a while. Next Friday, the ceiling is planned to be poured.

Currently, the west exterior staircase is causing difficulties. Originally planned as a precast concrete element, it apparently cannot be installed there using a crane. Now, a cost comparison is being made against on-site formwork.

Flat roof construction site with steel reinforcement, construction timber and piles of materials visible.
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sichtbeton82
4 Mar 2019 07:03
Yesterday, we were able to briefly enjoy the view from the future terrace on the ground floor!

Man standing on the roof edge of a shell construction with reinforcement at the edge, landscape in the background
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sichtbeton82
8 Mar 2019 07:18
"There used to be more tinsel," but less steel reinforcement. Attached is a photo before pouring the basement slab and one after the final concrete pour. If this doesn’t hold, they’re probably using a safety factor of 5.

Foundation slab with steel reinforcement, two construction workers on the shell structure.


Workers pouring concrete on a slab; construction site on a slope, cranes in the background.
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haydee
8 Mar 2019 09:55
At least 5 is expected.
It was the same for us. I believe the retaining wall and the foundation slab are sturdy enough for a bunker.