Top Landing Channels

Reference Parameters

Expressions for Default User Parameters

• B_L: TopLandingChannelLength

• G_OFFSET_END

  • if XY Plane is at Miter End: 0

  • if XY Plane is at Square End: -TopLandingOffset / tan(StairAngleFromFloor)

• G_OFFSET_START

  • if XY Plane is at Miter End: -TopLandingOffset / tan(StairAngleFromFloor)

  • if XY Plane is at Square End: 0

User-Defined Parameters

• StairAngleFromFloor - defined by PA

• LegHoleDiameter - arbitrary value 11/16"

• LegHoleSpacing - arbitrary value 2.25

• LegHoleFromEdge

  • if ReinforcementChannelType = "None", arbitrary expression = 3.5 in / 2 ul

  • otherwise, arbitrary expression = 3.5in / 2ul + ReinforcementChannelWidth

• LegHoleFromTop

  • if HasTopLandingTreadHoles, arbitrary expression = max(TopLandingTreadHoleFromTop + 2 in; G_H / 2 ul - LegHoleSpacing / 2 ul + TopLandingOffset)

  • otherwise, arbitrary expression = "G_H / 2 ul - LegHoleSpacing / 2 ul + TopLandingOffset"

• LegQTY - arbitrary expression

  • if TopLandingChannelLength >= 60, arbitrary value 2

  • otherwise, arbitrary value 1

• LegSpacing - arbitrary expression = G_L - G_W - 5 in

• HasNotch - boolean, default value false, set from PA

• NotchLength - arbitrary expression = TopLandingChannelLength - ( G_W / 2 ul ) - ( GuardrailTubeSize / 2 ul )

• NotchDepth - default value 2, set by TA

• TopLandingChannelLength - set by PA

• Channel Size - for changing size, set from PA

• TopLandingOffset - default value 1 (for easy sketching), set from PA

• GuardrailTubeSize - default value 1.5, set from PA

• ReinforcementChannelType - text selection, set from TA

  • None

  • WithHoles

  • WithoutHoles

• ReinforcementChannelWidth - arbitrary value 1.75

• ReinforcementChannelHoleDiameter - arbitrary value 0.46

• ReinforcementChannelHoleSpacing - arbitrary value 2.5

• ReinforcementChannelHoleFromEdge - arbitrary expression = ReinforcementChannelWidth / 2 ul

• ReinforcementChannelHoleFromBottom - arbitrary value 1.25

• TreadHoleDiameter - arbitrary value 0.46

• HasTopLandingTreadHoles - boolean, set from PA

• TopLandingTreadHoleFromTop - default value 2, set from TA

• TopLandingTreadHoleFromFront - default value 2, set from TA

• TopLandingTreadHoleQTY - default value 3, set from TA

• TopLandingTreadHoleSpacing - default value 15, set from TA

Pull Parameters

• Pull_ChannelWidth - for setting TopLandingChannelLength from the PA

Mid Plane - the center of the flanges (for constraint)

• Define as midplane between Bottom Plane and Top Plane

Landing Position Plane - where the top landing theoretical position is (for constraint)

• Define as offset from Left Plane (-TopLandingOffset)

Landing Start Plane - offset from XY Plane

• XY Plane at Square End: offset value (TopLandingChannelLength)

• XY Plane at Miter End: offset value 0

Landing Constraint Axis - where the theoretical "point" of the landing is

• Define by intersection between Landing Start Plane and Left Plane

Stringer Plane - represents the position of the stringers

• Define by Landing Constraint Axis and angle from Left Plane (StairAngleFromFloor)

Miter Cut (through all)

Tread Hole (Diameter = TreadHoleDiameter)

• Active: HasTreadHoles

Tread Hole Pattern (QTY = TopLandingTreadHoleQTY; Spacing = TopLandingTreadHoleSpacing)

• Active: HasTreadHoles

Leg Hole (Diameter = LegHoleDiameter)

Leg Hole Pattern (QTY = LegQTY, Spacing = LegSpacing)

Notch Cut (through all)

• Active: HasNotch

Reinforcement Channel Holes

• Active: ReinforcementChannelType \<> "None"