Strukturas is a leading provider of movable scaffolding systems (MSS) for bridge construction, with over 200 projects worldwide. The presentation describes various MSS solutions, including underslung and overhead systems. Underslung systems are suspended below the bridge deck and moved forward on launching wagons as segments are cast, while overhead systems are positioned above the deck. Both use hydraulic cylinders and other components to support formwork and rebar installation during casting, then relocate the system for the next segment. Strukturas works with clients to design customized MSS that improve efficiency for different bridge geometries and project conditions.

1. Movable Scaffolding
System
MSS Presentation

2. Strukturas, your partner for turnkey projects, worldwide.
Strukturas company in recent decades became Norwegian leading provider of Movable
Scaffolding System equipment, being present in more than 200 projects.
We strive for creating solutions that exceed the expectations of our customers.

3. Movable Scaffolding System
-Design and engineering,
- Fabrication and quality control,
- Supervision & operation.

5. Overhead
MSS
Underslung
MSS

6. Underslung
MSS

7. MENU
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Box cross section deck solution
• Used in situ casting of full spans
• Currently used on road and railway
decks
• Special solutions for special bridge
projects
• Hydraulic operated main functions
• Labor saving solutions
• Easy to adjust to radius, slope and
span variations
• Easy installation of the rebar
prefabricated parts
END
Movable Scaffolding System
Underslung Solution

8. MENU
Main Components:
• A- Main girder
• B- Noses
• C- Suspension gallows
• D- Transverse beams
• E- Supporting brackets
• I- External formwork
• L- Counterweight
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END
Movable Scaffolding System
Underslung Solution

9. MENU
Main Components:
• A- Main girder
• C- Suspension gallows
• D- Transverse beams
• E- Supporting brackets
• F- Launching wagons
• G- Main cylinders
• H- Platforms and ladders
• I- External formwork
• J- Internal formwork
• L- Counterweight
• K- Transport trolley
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END
Movable Scaffolding System
Underslung Solution

10. MENU
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Main cycle steps:
• Columns showing the blockouts where
to fix the supporting brackets
• When no blockouts can be used we
use a saw tooth plate solution or struts
to the column foundation
END
Movable Scaffolding System
Underslung Solution

11. MENU
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• Two pairs of supporting brackets
installed at columns(threaded bars
connecting the 2 brackets of each pair
– not shown)
END
Movable Scaffolding System
Underslung Solution

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• Main girders and noses installed on
top of the launching wagons
• The launching wagons are placed on
top of the supporting brackets
• The system is made by 2 symmetrical
halves
END
Movable Scaffolding System
Underslung Solution

13. MENU
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• Transverse beams are installed
connecting the 2 main girders
END
Movable Scaffolding System
Underslung Solution

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• Suspension gallows is installed at the
tip of the previous span and suspends
the main girders rear end during
casting.
• Two hydraulic cylinders transmit the
loads at the rear from the suspension
gallows to the deck webs during
casting
• During casting, system is suspended at
the rear and is supported to the
brackets at the front trough the
hydraulic cylinders
• Two hydraulic cylinders transmit the
loads at front from the main girders to
the supporting brackets
END
Movable Scaffolding System
Underslung Solution

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• External formwork installed on top of
the main structure
END
Movable Scaffolding System
Underslung Solution

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• Internal formwork is installed
• The internal formwork transport
trolley is shown
END
Movable Scaffolding System
Underslung Solution

17. MENU
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• Deck casted
END
Movable Scaffolding System
Underslung Solution

18. MENU
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• Previous to the MSS launching to the
next span the 3th supporting brackets
pair is installed at the front column
• Launching wagons are installed on top
of the 3th supporting brackets pair
END
Movable Scaffolding System
Underslung Solution

19. MENU
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• After deck is pre-stressed the MSS can
be lowered at the 2 rear and 2 front
main hydraulic cylinders
• Transverse beams central connections
are removed
• Both MSS halves are then open to the
end of the supporting brackets, using
the launching wagons
END
Movable Scaffolding System
Underslung Solution

20. MENU
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• Both MSS halves can now be launched
to the next span using the launching
cylinders located at the launching
wagons
• Both MSS halves will pass outside the
columns
END
Movable Scaffolding System
Underslung Solution

21. MENU
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• When both MSS halves reach the
longitudinal position at next span
system is closed by moving the
launching wagons towards the
columns and transverse beams are
connected again
• MSS is now lifted to the casting
elevation using the 2 rear and the 2
front hydraulic cylinders
• Rebar works can start and transport of
the internal formwork will be made
simultaneous to that operation
END
Movable Scaffolding System
Underslung Solution

22. MENU END
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General project views
• Different columns and
hammerhead geometries
• Variable horizontal and vertical
deck radius
• Unfill bottom formwork elements
can be used to cast height variation
decks
Movable Scaffolding System
Underslung Solution

23. MENU
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General project views
• Can be used at parallel decks with
reduced space in between them
• Installing tower cranes and
concrete pumps at the main girders
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Movable Scaffolding System
Underslung Solution

24. MENU
Internal Formwork and Rebar works
• The internal formwork doesn’t move
together with the MSS main structure.
• The opening and closing internal
movements are made hydraulically
through an internal formwork
transport trolley.
• The internal formwork panels are
transported one at a time.
• Diaphragm opening to be big enough
to pass
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END
Movable Scaffolding System
Underslung Solution

25. MENU
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Cambering & Nose adjustment
• Few adjustable screw jacks to be
adjusted
• Split the main structure into 3 sections
(front nose-main girder-rear nose) and
design a unique hinged connection
between the parts has made it
possible to use the MSS with as small
as 200m radius
END
Movable Scaffolding System
Underslung Solution

26. MENU
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Special solutions
• Big working areas at front of the MSS
formwork
• Special supporting brackets
installations
• Rebar transport solutions
END
Movable Scaffolding System
Underslung Solution

27. MENU
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Main Components:
• A- Main girder
• B- Rear nose
• C- Suspension gallows/rolling
support
• D- Transverse beams
• E- Supporting brackets
• F- Launching wagons
• I- External formwork
END
Movable Scaffolding System
Underslung Selflaunching Solution

28. MENU
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Main Components:
• A- Main girder
• D- Transverse beams
• E- Supporting brackets
• F- Launching wagons
• G- Main cylinders
• H- Working platforms and ladders
• I- External formwork
• J- Internal formwork
• K- Transport trolley
END
Movable Scaffolding System
Underslung Selflaunching Solution

29. MENU
Selflaunching MSS
• Supporting brackets self
relocation without the need for
cranes
• Easy to use on the water or with
very high columns
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END
Movable Scaffolding System
Underslung Selflaunching Solution

30. MENU
Internal Formwork and Rebar works
• Suspension gallows/rear support
equipped with powered wheels and
rails
• Internal formwork transported by a
trolley
• Supporting brackets self relocated by a
winch system
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END
Movable Scaffolding System
Underslung Selflaunching Solution
NEXT

31. MENU
NEXT
TT section deck solution
• Used in situ casting of full spans
• Currently used on road decks
• Special solutions for special bridge
projects
• Hydraulic operated main functions
• Labor saving solutions
• Easy to adjust to radius, slope and
span variations
• Easy installation of the rebar
prefabricated parts
END
Movable Scaffolding System
Underslung Solution
PREVIOUS

32. MENU
NEXT
Main Components:
• A- Main girder
• B- Noses
• C- Suspension gallows
• D- Transverse beams
• E- Supporting brackets
• I- External formwork
• L- Counterweight
END
PREVIOUS
Movable Scaffolding System
Underslung Solution

33. MENU
NEXTPREVIOUS
Main Components:
• A- Main girder
• C- Suspension gallows
• D- Transverse beams
• E- Supporting brackets
• F- Launching wagons
• G- Main cylinders
• H- Platforms and ladders
• I- External formwork
• J- Internal formwork
• L- Counterweight
END
Movable Scaffolding System
Underslung Solution

34. MENU
PREVIOUS
General Project views
• Internal formwork travelling with the
MSS main structure
• Internal formwork folding system
hydraulic operated
• Hinge transverse beams allowing
rotation and folding of internal
formwork
NEXT
END
Movable Scaffolding System
Underslung Solution

35. MENU END
PREVIOUS
General project views
• Folded internal formwork passing
outside the hammerhead
• Different column and hammerhead
geometries
• Internal formwork supported by struts
to the transverse beams
Movable Scaffolding System
Underslung Solution

36. Overhead
MSS

37. MENU END
NEXT
Box cross section deck solution
• Used in situ casting of full spans
• Currently used on road and railway
decks
• Special solutions for special bridge
projects
• Hydraulic operated main functions
• Labor saving solutions
• Easy to adjust to radius, slope and
span variations
• Easy installation of the rebar
prefabricated parts
Movable Scaffolding System
Overhead Solution

38. MENU END
Main Components:
• A- Main girder
• B- Noses
• C- Rear Support
• E- Main Supports
• F- Launching wagons
• I- External formwork
• L-Bottom platform
NEXTPREVIOUS
Movable Scaffolding System
Overhead Solution

39. MENU END
NEXTPREVIOUS
Main Components:
• A- Main girder
• D- Transverse beams
• E- Main Supports
• F- Launching wagons
• G- Main cylinders
• H- Working platforms and ladders
• I- External formwork
• J- Internal formwork
• K- Hangers
• L-Bottom platform
Movable Scaffolding System
Overhead Solution

40. MENU END
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General project views
• Easy to install behind the abutment
• Easy to move transversally from
one deck to the other
• Few formwork suspensions
• Formwork folding system hydraulic
operated
Movable Scaffolding System
Overhead Solution

41. MENU END
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General project views
• Many different main support solutions
• Main support splited in several parts
to easy the installation at
hammerhead
• Easy to use with horizontal and vertical
deck curves
Movable Scaffolding System
Overhead Solution

42. MENU END
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Formwork
• Formwork supported on a bottom
platform
• Cambering introduced on the
adjustable screw jacks, struts and
suspensions
Movable Scaffolding System
Overhead Solution

43. MENU
Selflaunching MSS
• Main supports self relocation
without the need for cranes
• Easy to use above water or with
very high columns
Movable Scaffolding System
Overhead Selflaunching Solution
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END

44. Strukturas can design and
deliver Bridge Building
Equipment covering all the
cast in situ and precast bridge
deck constructions methods
Strukturas is a regular
partner of the specialized
world bridge contractors,
during the development
process and pro current
stages. Contributing with
optimized and integrated
package solutions Strukturas is committed to quality OVER 200 projects world
wide!

45. END