... a quite special innovation. 1, Attached photo shows you a 30m span width Arcum Tent, which is the recently and the ... 15m.2, The clear-span width of ARCUM30 is 30m, length could be 30m, 35m, 40m and +5m more.3, Frame uses ... of the Arcum Tent): 10m, 12m, 15m, 18m, 20m, 25m, 30m, no restriction on length by adding 5m bay modular unit.