girder (n)

Under-running trolleys can also be used with box girders.

If the bridge girder does not jut out beyond the supports, a counterweight is not required.

A crane trolley with hoist usually moves along the bridge girder, unless the gantry crane features a rail-mounted slewing crane.

Balken (m)

大梁 (n)

棒 (n)

横梁 (n)

barra (n)

haz (n)

viga (n)