MARCEGAGLIA construction equipment division

Naval construction systems

Modular structures for naval works

Metal structures that allow creating working bays for hold’s inside walls of methane transport ships (holds’ bottom and ceiling included).
• horizontal-telescopic floor system; approx. 1-m extension around all perimeter of each working bay possible
• vertical-telescopic end at each upright base; approx. 1-m extension possible
• Simultaneous rising possible of all base bearings in a longitudinal row (aft-bow line)
• Service lifts for all working floors
• Service ladders at construction ends for all working floors
• Structural member junctures without bolts
• Wooden tread-floors (birch/fir multi-layer

Material
• Hot dip galvanized steel S235JR and S355JR

Characteristics
• Working platforms: 7 or more
• Tread floor area: over 4000 mq each floor, made of pre-galvanized metal sheets coated with fix birch/fir multi-layer panels
• Limit load per floor: 250 Kg/mq
- n°1 floor, 250 Kg/mq (3rd floor)
- n°1 floor, 200 Kg/mq
- n°2 floors, 160 Kg/mq
- n°1 floor, 90 Kg/m2 (7th floor) Point load of 420 Kg on a 90x30-mm area
• Ground pressure for each floor: < 5 Kg/cmq
• The whole structure is made of hot dip galvanized steel S235JR and S355JR; the metal floor system is made of pre-galvanized steel plate.

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Dimensions
• Approx.width: 30 m
• Approx.lenght: 40 m
• Free central span: 16 m
• Approx.height: 20 m

Manufacturing standards
• CNR - UNI 10011/88
• CNR - 10012/85
• CNR - 10022/84
• CNR - 10022/84