COLUMNS
Precast columns are
manufactured in a variety of sizes, shapes and lengths. The concrete surface
is smooth and the edges are chamfered. Columns generally require a minimum
cross-sectional dimension of 300 x 300 mm, not only for reasons of
manipulation but also to accommodate the column-beam connections. The 300 mm
dimension provides a two-hour fire resistance, making it suitable for a wide
range of buildings.
Columns with a maximum length of 20 m to 24 m can be manufactured and
erected in one piece, i.e. without splicing, although a common practice is
also to work with single-storey columns.
The main features are:
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Variety of sizes,
shapes and lengths
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smooth surface
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chamfered edges
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also prestressed
possibility
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minimum cross-section
300x300 mm
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even columns 20-24m
length can be manufactured and transported in one piece, without splicing
BEAMS
Overview of the types of prestressed beams for different applications
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R-beams:
rectangular roof or floor beams for moderate spans |
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RT-beams:
inverted T-beams for floors of middle to large spans |
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RF-beams:
rectangular floor beams for composite action with floor slabs |
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RL-beams:
L-beams for edge floorI-beams: for roofs and large floor-beam spans |
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I-beams:
for roofs and large floor-beam spans |
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SI-beams:
roof beams with sloped spans for large spans |
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