Roundabout Velmolenweg Uden
PT BAJA ENGINEERING
INDONESIA
H. Samali nr 79
12510 Jakarta
Indonesia
Tel.: +62-21-7981416
Fax: +62-21-79199940
Contact:
M.
Hans Grasmayer
Email:
Structural Concrete Engineering & PT Baja
Engineering Indonesia are joint venture
companies for detailing structural concrete.
The company ‘Structural
Concrete Engi-
neering’ is based in The Netherlands and is
responsible for the acquisition and the pro-
jectmanagement.
‘PT Baja Engineering Indonesia’
has produc-
tion facilities in Indonesia and uses Allplan
Engineering software.
Structural Concrete Engineering & PT Baja
Engineering Indonesia were contracted by
Infra Consult & Engineering to execute the
detail engineering for the project:
Uden
Rotonde Velmolenweg.
Project
:
Uden rotonde Velmolenweg
Client
: Provincie Noord Brabant
Contractor
: Ballast Nedam Infra Zuid Oost
Engineering client
:
Holland Railconsult
Engineering contractor
: Infra Consult
&
Engineering
Subcontractor
engineering
detailing
:
Structural Concrete Engineering & PT Baja
Engineering Indonesia
The project comprises the building of two,
fairly similar, tunnels for pedestrians with a
shell structure in between and a round-
about above the tunnels.
The tunnels will be built inside a sheet wall
structure to secure the excavation and are
provided with underwater concrete at the
bottom to secure water pressure during the
construction.
Structural
Concrete Engineering and PT
Baja Engineering Indonesia executed the
detail engineering that included:
1.
3d survey of contract drawings
2.
preparation of dimension drawings
3.
preparation of rebar drawings
4.
preparation of bending schedules of the
rebar
Tunnels
The length of the two tunnels, running par-
allel underneath the roundabout is 155 m.
Each tunnel is divided into 7 sections, of
which 3 parts are closed with a deck struc-
ture.
At the connection with the shell struc-
ture in the middle of the roundabout, the
tunnel section has a large opening. From an
engineering point of view this is the most
interesting part of the tunnel. The shape of
the shell, curved in all directions, is connect-
ed to an inclined wall structure. The top of
the wall structure is also bent,
matching the
curves of the shell structure.
The floor slabs
will be cast on top of the
under water concrete, they will be attached
to the sheet
wall structure
with
welded
dowels.
The decks of part 3, 4 and 5 are supported
by the sheet wall structure.
The walls consist of inclined prefab concrete
elements that cover the sheet wall structure
completely.
Rain water and water from leakage is a col-
lected at the water containing structure in
part 2 of the west tunnel.
The project will be completed in June 2005.
Detailing process
Structural Concrete Engineering and PT Baja
Engineering Indonesia started this job with a
3d check on critical parts of the structure.
After the check and approval by our client
of our findings, the dimension drawings
were prepared. In total 45 A0 size drawings
were prepared for 11 tunnel sections and 1
shell structure.
After approval by our client of the dimen-
sion drawings, the rebar drawings
were
prepared.
Over 375 ton
of rebar
was
designed.
Again 45 A0 size drawings were
prepared.
50
SCIA User Contest 2005 / Allplan Projects
Company
Project
Roundabout Velmolenweg Uden
1
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