SOLID AND TRANSLUCENT ROOF STRUCTURES
The 1920s single-storey nursery has been extended to provide extra classrooms and large, open-plan playrooms. The new accommodation fills in gaps between original buildings and extends them, forming two wings that rise to two storeys at the corner, the location of the main entrance.
One wing is single storey and flat roofed. The second has a pitched roof of profiled fibre-cement sheets. The upper parts of the walls just below the eaves are also clad with profiled sheets that extend upwards to conceal the inset gutter. This creates a strong enveloping roof form. Lower parts of the walls are clad with a rainscreen of flat fibre-cement sheets.
The construction was designed to be simple and economical. The walls are blockwork, with insulated timber-studwork walls resting on them to support standard domestic roof trusses. The rising height of the roofs is achieved by increasing the height of the timber-studwork walls.
The working detail shows two cross sections through the two-storey structure at the main entrance. The solid wall and roof structure has a steel frame with infill rafters and collar ties; this replaces the trusses.
The cross section through the translucent structure occurs just above the main entrance door.
The service deck links the two adjacent solid wings and its overhang protects and shelters the main entrance.