Plumbing code

https://egov.cityofchicago.org/city/webportal/portalDeptCategoryAction.do?deptMainCategoryOID=-536883465&deptCategoryOID=-536883472&entityName=Buildings&topChannelName=Dept&contentType=COC_EDITORIAL&Failed_Reason=Session+not+found&com.broadvision.session.new=Yes&Failed_Page=%252fwebportal%252fportalDeptCategoryAction.do

https://www.ilga.gov/commission/jcar/admincode/077/07700890sections.html

https://www.reedconstructiondata.com/building-codes/illinois/

https://www.reedconstructiondata.com/building-codes/illinois/chicago/

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