Tarmac - Precast Beams, budownictwo pwr, Eurocode & Civil Engineer Books
[ Pobierz całość w formacie PDF ]prestressed beams
Tarmac Precast Concrete
– product overview
product
specifications
Tarmac prestressed concrete beams
can be used to form
bridge decks
with
bearings and expansion joints
as well as
integral bridges.
Integral bridges, which bear directly onto their abutments
and against the soil on each side, without bearings or joints,
are now
a modern, economical option.
Prestressed concrete beams can be used
conveniently
in the
construction of elevated decks, podia, jetties and in forming
slabs to cover shafts and other excavated voids.
This brochure contains an overview of the technical specifications for our full range of standard bridge beams
with further technical information contained on a CD on the inside back cover.
Solid Slab Decks
Solid slab bridges are the most economical solution
for short spans, up to 18m.
The beams are laid side by side, bottom steel
is placed transversely through specially cast holes
in the beam and a top mat of steel is then fitted.
The deck is then completed with a pour of
insitu concrete.
TY beam
DECK SECTION
T Beam
typical applications:
Short and medium span bridges and
commercial developments.
advantages:
Provides a closely assembled soffit.
No need for formwork.
profile
span range (in metres)
2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40
TY Beam
typical applications:
Short and medium span bridges,
commercial developments, jetties
and marine decks.
profile
span range (in metres)
2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40
advantages:
Provides a closely assembled soffit with
lower number of beams required and less
insitu concrete. No need for formwork.
TYE Beam
typical applications:
Complementary edge beam to the
‘TY’ beam.
profile
span range (in metres)
2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40
advantages:
Can be used for a solid infill deck.
Increased section properties to support
parapet loading.
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Solid Slab Decks
(cont.)
Solid Box Beam
typical applications:
Short to long span bridges. Ideal for
use over busy railway lines.
advantages:
Provides a quick, safe working
platform.
profile
span range (in metres)
2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40
SBB Beam
(Standard Bridge Beam)
typical applications:
Ideal for short span bridges and
commercial developments.
profile
span range (in metres)
2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40
advantages:
Provides a closely assembled soffit
and less insitu concrete. No need for
formwork. Can be readily designed
for continuity.
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Voided Slab Decks
A voided slab deck is useful where service decks
are required and in situations with very high skews.
U beam with rebate
DECK SECTION
U Beam
typical applications:
Medium and long span bridges.
advantages:
Suitable for skew decks where torsion
is high. Provides a ready made edge
detail and easy provision for services.
profile
span range (in metres)
2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40
the leading
UK manufacturer
of precast concrete
offering our customers
a unique package
of benefits
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