Scope and inputs to reconcile
Record drainage and storm runs, branch fittings, cleanouts, transitions and the joint type shown in the specification. Acoustic or fire-related requirements should come from project documents.
Workflow and checks
Trace floor plans and risers together. Count joints at fittings and transitions, then reconcile straight-pipe joint allowances with the purchasing lengths selected by the supplier.
What the output should show
Output pipe length by size, itemized fittings, coupling/joint counts and separately specified supports with drawing references.
Exclusions and unresolved decisions
Do not infer that cast iron is required in every commercial building or substitute one coupling specification for another.
Documents to share for a quote
Supply drainage plans, risers, cast-iron specifications and support details for a scoped material quote.