A flimsy wood "sidewalk shed" has been erected in front of this building.
Metal scaffolding sections are sitting on top. Evidently they will be erected on top of the "sidewalk shed" to work on the facade of the building.
Notice that the largest wood members are 2" x 4" connected with sheet metal timber connectors.
There is no diagonal bracing. if the metal scaffolding is erected, the whole thing could collapse into the street.