Products / Roofs / MR4 Arched (52,50x45,90 ft & 65,62x52,50 ft)

Detailed information


MR4 is a Mega Roof Structure with a distinctive curved roof and arch profile. It has proven to be a very popular choice for both show organizers and normal customers alike. A perfect match for your large concert stages. Call or e-mail us today for more information or to request a quote.

Key benefits

  • MR4 Mega-Arc Roof structure for temporary events
  • MT2 self-climbing towers upto 41.01 ft high with M400 / M520 main grid
  • Keystone 'arch' created using standard straight sections & angled hinge parts
  • Fast connection for quick, simple and secure assembly
  • Supplied complete with internal wind bracing wires & connection accessories
  • Full structural calculation report & build manual available
  • PVC roof colour and side walls options
  • Integrated tower base / stage components available
  • PA wing options available on request
  •  EXE hoists recommended
Technical specification
Dimensions   Stage size 20x12 m 65,62x39,37 ft 16x12 m 52,50x39,37 ft
A Internal width 20,50 m 67.26 ft 16,50 m 54.13 ft
B Overall external width 23,12 m 75.85 ft 19,12 m 62.73 ft
C Internal depth 13,03 m 42.75 ft 13,03 m 42.75 ft
D Overall external depth 15,65 m 51.35 ft 15,65 m 51.35 ft
E Clearance side 11,53 m 37.83 ft 11,53 m 37.83 ft
F Clearance middle 14,30 m 46.92 ft 14,30 m 46.92 ft
G Overall height 14,90 m 48.88 ft 14,90 m 48.88 ft
H Cantilever depth 2,70 m 8.86 ft 2,70 m 8.86 ft
Loading capacity
Loading capacity   Stage size 20x12 m 65,62x39,37 ft 16x12 m 52,50x39,37 ft
Main grid Uniformly distributed (UDL) 5456 kg 12 018 lbs 4365 kg 9615 lbs
  or 8x Point loads of 800kg 8000 kg 17 621 lbs 6400 kg 14097 lbs
PA wing Central Point load (CPL) 1500 kg 3304 lbs 1500 kg 3304 lbs
* See structural report for exact load positioning      
Operational specifications
Design standarts DIN EN 13814 (2005)
DIN 1055-4
DIN 4113
DIN 18800
Fairground and amusement park machinery and structures
Actions on structures / wind
Design of aluminium structures
Design of steel structures
• All our structures are standard produced under EN 1090 EXC2, include neccessary guy wires, instruction manual and engineering report
Wind management Out of service
In service
28,3m/s - 100km/h - 62mph (Max. gust wind speed)
20,8m/s - 74km/h - 46mph (Max. gust windspeed)
* Calculations based on 30% minimum permeable side canopies
* Side canopies to be removed above this wind speed if not considered
Ballast This can vary per tower from 4750kg / 10462bs up to 12634kg / 27828lbs and depends on:
• If tower bases are interconnected or free standing
• Layout of canopies
• Self-weight of load or interconnected stage is considered (Might be deducted from ballast under certain conditions)
• Friction material used between screw jacks, padding and sub soil
Canopy & sidewalls B1 fire retardant canopy on request, in kedders
Silvergrey; other colors or inside black on request
B1 fire retardant side nets in compliance with latest Eurocodes
Customized Customisation (i.e. truss configuration, alternative dimensions, roof adjustability) on requirement
Transportation data
Self-weight Stage size 20x12 m 65,62x39,37 ft 16x12 m 52,50x39,37 ft
* Exact self-weight depends on configuration 4680 kg 10308 lbs 3200 kg 7048 lbs
Transport volume * Packed in carton boxes and bubble foil 80 m3 2825 ft3 70 m3 2472 ft3


MR4 Arched (52,50x45,90 ft & 65,62x52,50 ft)

Unique curved roof and arch profile for large concert stages. Features quick, simple and secure assembly.
MR4 20x12m, MR4 16x12m
Max. Stage Dimensions
65.62x39.37 ft
Max. Clearance
48.88 ft
Max. SWL
12018 lbs
Wind Rating
46/62 mph (in/out of service)
MR4 Arched (52,50x45,90 ft & 65,62x52,50 ft)


Explore our new products

The First
Rigging & Trussing
Television play