Expansible corridor

A corridor assembly for spanning a plurality of horizontal supports, comprising:

• a main corridor having a pair of spaced-apart hollow girder members, each girder member having an outer shell and an inner longitudinal opening, and a horizontal scaffolding plate connected between said hollow girder members;
• a sub-corridor having a pair of spaced-apart girder members telescopically received for horizontal sliding in respective ones of said hollow girder members, and a horizontal scaffolding plate connected between said pair of girder members of said sub-corridor, said scaffolding plates of said main corridor and said sub-corridor being at different horizontal locations and said scaffolding plate of said sub-corridor extending through said longitudinal openings of said hollow members so that said sub-corridor can telescopically slide with respect to said main corridor;
• a first foldable handrail connected to each of said hollow girder members of said main corridor foldable from an upright position on said hollow girder members to a folded position lying in a plane substantially parallel to a plane of said horizontal scaffold plate of said main corridor;
• and
• a second foldable handrail connected to each of said girder members of said sub-corridor, each second foldable handrail foldable from an upright position to a folded position lying substantially parallel to said scaffolding plate of said sub-corridor, each of said second foldable handrails being connected to one of said first foldable handrails so that said first and second handrails remain connected while said sub-corridor telescopically slides with respect to said main corridor.