Stair Plan Layouts with Isometric View and Dimensions detailing

Stair plan layout with isometric view and dimensions presents a complete architectural stair detailing, including plan view and 3D isometric representation. The plan shows step numbering from 1 to 20 with tread width marked at 30 units and landing width 115 units. Overall stair width is defined at 120 70 120 spacing between structural supports. Side wall thickness and railing alignment are clearly indicated with sectional markers A A for reference. All riser and tread dimensions are proportionally drafted to maintain construction accuracy and safe circulation design.