Noor Abid_2016-02-19

5.5 Savill Visitor Centre, Windsor Great Park, Surrey, England-
Glenn Howells Architects, 2007 90
-Organic & timber gridshell roof system
The building utilises an organic shape roof, formed as a tree leaf
which tend to blend magnificently with the landscape. The structure
involves gridshell timber strips (80x50mm), organised in 4 layers grid; the
lower 2 layers were set at 1m spacing and manipulated until the right
shape was achieved, then bolted together. The Top grid was then fixed
above. And thus, the layering system of the grid results a 300mm deep
gridshell, covered with 2 layers of birch plywood panels@12mm thickness.
These panels are fixed in a cross motion (the lower ones were diagonal to
the upper ones to achieve strength) through butt joints, then strengthened
with steel strips in order to transfer the tensile forces within the surface.
The roof surface is then topped with a vapour control layer, insulation
@200mm, an aluminium seam roof, and finished with oak rain screen
boards. Roof load, however, is transferred to ground through the tubular
steel beam which runs along its perimeter and fixed to the steel quadruped
columns which take the load down to ground.
Figure 5.26 Savill building exterior
http://www.bacgroup.com.au/projects/communityhealth/myall-coast-wellness-centre/
Figure 5.27 Timber gridshell system
Figure 5.28 Gridshell- tubular beam connection
90 Architecture Today, “Glenn Howells Architects: Savill Building, Windsor Great Park,” last
modified February 2, 2007, http://www.architecturetoday.co.uk/?p=7210
Figure 5.29 Roof interior
Figure 5.30 Roof overhang (4.5m), and beam- column
connection
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