Table SectionSECTION-003

Inputs

• BookBookWire from Table In. Holds the step table, the tier table and the settings
• Field InfoFieldThe field, straight from Field. Supplies the focal point
• Focal PointFocalAim the sightlines somewhere else. Wired here it wins over Field Info
• Base LineBaseThe faceted line the stand is built on. Its outward normal sets which way it faces
• Slab ThicknessSlab TThickness of the stand slab. Leave at 0 to use the one in the workbook Default 0.
• Panel ValuesPanelEvery value from Input Panel, as one bundle. Anything you wire in yourself wins over it

Outputs

• Stand SectionsSSD ⊞The tier sections, with the barrier and any accessible rows written in
• Handrail SectionsRailsThe barrier itself, one closed section curve per tier
• Section ProfilesProfileTread-top stepped line, after the front row was pulled back for the barrier
• Closed ProfilesClosedThe closed profile the stand is swept from
• Eye PointsEye PtsEye point of every row, all tiers - the points the C-value check uses
• Guide GeometryGuidesThe lines behind the barrier sightline check
• Wheelchair Section Profiles♿ ProfTread-top line through an accessible platform, one per wheelchair tier. The tier's own section is unchanged
• DebugDebugDeveloper diagnostic output for tracking down bugs. Copy this when reporting a problem

What it does

Each tier's start point comes from the workbook's 12_INPUT_TIER page as start_mode, start_h and start_v. PREV_TIER, the default for every tier above the first, measures from the outer end of the lower tier's last tread - the edge away from the field - at that tread's top surface, not from its nosing or a railing top. The upper tier's first tread front edge then sits start_h outward (negative when it overhangs the tier below) and start_v up, so start_v alone sets the height between tiers and the lower tier's last riser height is not used. START_LINE, the default for the first tier (tier_index 0), measures from an anchor point on the Base Line - the start line as the axes facet it - so 0, 0 puts the first tread front edge on the Base Line; FOCAL measures from the focal point. Section Plus then moves the whole section outward by the first tier's solid_thickness, which keeps the tiers where they are relative to each other. To take the values off a drawing: start_v is the top of the upper tier's first tread minus the top of the lower tier's last tread, and start_h is the horizontal distance from the lower tier's last tread outer end to the upper tier's first tread front edge, negative toward the field.