Современная архитектура. Гусева О.Г - 34 стр.

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УлГТУ | Ульяновск

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33
The concept of the Dome's roof is apparently very simple. Tensioned steel cables
are arranged radially on the surface of the dome and held in space by hangar and tie
down cables at 25m intervals. The surface is defined as a spherical cap.
Between the cables, tensioned coated fabric is used as cladding. Both the
tensioned cables and cladding carry the loads by deflection accompanied by increase
in tension.
The forces in the cables, 40 tonnes in each radial line have to be resisted at the centre where
they come together and at the boundary where they are anchored. In the centre of the
roof there is a 30m diameter tension ring consisting of 12 — 48mm diameter cables
which carry a total of 700 tonnes. At the edge the forces are resisted by vertical ground
anchors going 12m down into the gravel layers and horizontally by a concrete ring beam
1000m in circumference which carries the loads in compression.
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Vocabulary:
to conceive
millenium
cable
fabric
cladding
deflection
to resist
to anchor
layer
circumference
Lexical test
1. The world time finds its origin in ...
a) Manchester
b) Paris
c) Greenwich
2. The centre of the Millenium celebrations is...
a) the Millenium Dome
b) The Pompidou Centre
c) the Colosseum
3. The concept of the Dome's ... is apparently very simple.
a) exterior
b) interior
c) roof

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