Application for building permits shall also be accompanied by plans and specifications which shall be sufficiently complete that the proposed structure could be constructed therefrom by a competent contractor, builder or engineer without further directions of any kind.
All such plans and drawings shall be drawn to a scale of not less than one eighth inch (1/8") to the foot on paper or cloth, in ink, or by some process that will not fade or obliterate. All distances and dimensions shall be accurately figured, and drawings made explicit and complete, showing the lot lines and the location of the exterior lines of said building in relation thereto, and the entire ventilating, sewerage and drain pipes and the location of all plumbing fixtures within such building.
True copies of as much of said plans as may be required, in the opinion of the Building Commissioner, to illustrate the features of construction and equipment of the building referred to, shall be filed with the Building Commissioner, and shall remain on file in his office for a period of six (6) months after the occupation of such building, after which such plans shall be returned to the person by whom they have been deposited, upon demand. It shall not be obligatory upon the Building Commissioner to retain such plans in his custody for more than six (6) months after the occupation of the building to which they relate.
Complete plans and specifications of buildings for public or business use for which permits are granted shall remain on file permanently in the Building Commissioner's Office.
In all cases, the approved plan or plans, together with building permits, must be kept on the premises while the work is in progress.
Seal Required: Plans and specifications must be signed by and: sealed by a Licensed Architect or Structural Engineer as provided in "An Act to provide for the Licensing of Architects and to regulate the practice of architecture as a profession and to repeal certain acts therein named", approved June 24, 1919, or as amended, commonly known as "The Illinois Architectural Act" and in "An Act to revise the law in relation to the regulation of the practice of structural engineering", approved June 24, 1919 as amended. (1-71)