TinnerFlow™2nd YearBlueprint ReadingYELLOW · Check First
Architectural grid lines are noted as circled letters (A, B, C...) along one axis of the building plans and circled numbers (1, 2, 3...) along the perpendicular cross-axis. * Pull your tape measurements directly from these core column line coordinates marked out physically on the jobsite floors by surveyors to accurately locate your duct pathways.
Architectural grid lines are noted as circled letters (A, B, C...) along one axis of the building plans and circled numbers (1, 2, 3...) along the perpendicular cross-axis. * Pull your tape measurements directly from these core column line coordinates marked out physically on the jobsite floors by surveyors to accurately locate your duct pathways.
Use this as training guidance. The foreman, approved drawings, project specs, manufacturer installation instructions, employer safety policy, and AHJ/code requirements always control the final answer.