Satoh san no uchi: 2008

Façades of Proposal 8

Front façade, facing West / Nishi. On the right a second bay window on the second floor is new.
The side façade facing South / Minami shows this bay window of the study.

Rear façade, East / Higashi. Sliding doors of the bedroom on the second floor open to the balcony.

Side façade, North / Kita. Windows were rearranged.

Sections of Proposal 8

Section from North to South, looking east.

Section East to West, looking North.

Plans of Proposal 8

Second floor

Bathroom layout has changed.

Bedroom and study swapped.

Toilet may need to be shifted to create room for the staircase. See posting below.

First floor

Doors between kitchen and living room are now opening doors instead of sliding doors.

Basement

Location for the exterior units of the air conditioning indicated.

Structural Concept

The basement is a concrete box. It is a rigid support of the upper floors.

The upper floors are built as a wooden house. It is a flexible structure.

The front and rear façades are made of brickwork. Their connection to the wooden structure is very important. This is were rigid and flexible meet.

Structure: load bearing walls

Second Floor
Walls are indicated that may support the roof.

First Floor

Basement
The ceiling of the basement is a concrete slab. This spreads the loads of the upper floors.

Pre crack joints

Earthquakes will stress the brickwork façades.
To avoid cracking, at least the red joints should be flexible.

Piping

Second Floor
Waste water is collected in the two pipes in the staircase. Rainwater pipes are inside the façade.

First Floor
Exhaust of the fireplace through the facade. Piping of the airconditioning split unit runs through the wall down to the exterior units under the terrace (see basement drawing).

Basement
Waste water and rainwater from the basement has to be pumped up to sewerage level.

Staircase

Scheme 1 shows a recommended staircase with 230 mm per step.
Scheme 2 showes the minimum depth of steps: 220 mm per step.

The present design offers space for the staircase of 2m x 1.25m. Steps are measured on the climbing line. This is the line where the center of the body of the person moves when climbing the stairs. The climbing line is 300 mm from the walls.
In order to optimize depth of steps space has to be found by either moving the right hand wall or reducing thickness of the façade. Detailed design of the house has to reveal which option is best.