1022.12 OBSTRUCTIONS BY BUILDING OPERATIONS.
   (a)   Permit Required. No person shall occupy any street with any materials or machinery incidental to the construction, demolition or repair of any building adjacent to such street, or for any other purpose, without first obtaining a permit therefor from the Director of Inspections and posting a cash deposit and filing an insurance policy as required by Section 1020.03.
(1974 Code § 4.26)
   (b)   Pedestrian Passage. At least five feet of sidewalk space shall be kept clean and clear for the free passage of pedestrians. If the building operations are such that such free passageway is impractical, a temporary plank sidewalk with substantial railings or a sidewalk shelter built in accordance with the Building and Housing Code shall be provided around such obstruction.
(1974 Code § 4.27)