Extended Stairs - Stair tab

Setting	Description
Stair runs	Settings used to define the runs, level and rotation of the staircase. [ ] (the first field) – displays the total number of stair runs in this stair. Indicates the amount of staircase runs to be inserted into the staircase element. [+] – Adds a stair run to the stair. [-] – Removes the top-most stair run from the stair. NS – Select the run number to display and edit the stair run parameters. For multiple levels, allows selecting current level being modified. R – Sets the rotation angle of the entire staircase from its initial direction, taken counter-clockwise from the X-axis defined when the stair was inserted. An angular value should be entered. Negative values may be used.
Stair specifications	Settings used to define the orientation and spacings of the staircase elements. Q1 – Elevation at the bottom of the current stair run (bottom platform or landing). This is the starting elevation of the staircase/lower platform. Q2 – Elevation at the top of the current stair run (top platform or landing). This refers to the ending elevation of the staircase/platform A – Angle of the staircase, between the horizontal plane and the stair stringer. If set to zero, the angle is calculated from the other dimensions. D – A clear distance between the flights and stairs. This is the distance between the outside of the current stair run and the previous (lower) stair run, for an `R1` of 180° (inactive for stair run 1). A value should be entered here even if the stairs are not 180 degrees to one another. P – The going distance of the steps, nose to nose, horizontal. Sets the distance between the nose of subsequent stair treads. Inactive if a value is provided for `A`. La – Clear distance between handrails, etc. for the stair run. Sets the inside distance of the stringers. R1 – Rotation angle between the current stair run and the previous (inactive for stair run 1). Note: Grayed out on the first level. Invert – When checked, rotates the turn between stair runs clockwise in the angle selected in `R1`. N – Number of rises in the stair run, including the top landing if selected. Typically one more than the amount of steps. The adjacent field displays the actual measurement of the rise nose to nose vertically, the individual rise of each step. G – Determines the end condition of the stringers for the flight of stairs selected in `NS`. Sets the type of string cut/attachment for the knees at the base of the current stair run. No – No knee cut is used. Cut A – A vertical knee is used. Cut B – A knee is used with a bevel cut to the lower platform member. Tip: When this field is selected, the current method of cut selected for G is displayed in the image (if visible). Fam – When set up ahead of time, Part Family assignments can be selected from here. Cl. – The Display Class assignments can be selected from here.
Shape	Settings used to define the stair shape and material. C1 – Cheek (stringer) shape. Determines the basic shape for the stringer elements used in the staircase. (Select Shape tool) – Opens the Shape Selection dialog, used to select a catalog shape from a list of standard shapes and sizes. Note: Changing this value affect the entire staircase. C2 – Cheek shape low (platform support member). Adjusts the stringers shapes supporting the platforms. (Select Shape tool) – Opens the Shape Selection dialog, used to select a catalog shape from a list of standard shapes and sizes. Exclude – Cheek shape low (platform support member). When checked, enables the `C2` stringer shapes for the entire staircase. This option works with values (`A/a`, `C/c`, `S1` and `S2`) located in the ‘Platform bottom’ and Platform top’ sections located near the bottom left of this dialog window. M1 – Sets the material associated with the shape provided in C1. M2 – Sets the material associated with the grating plates provided in C2.
E/e	Distance between the platform and the top-of-steel of the platform support member. Sets the horizontal and vertical (straight/oblique cheek shape) offsets of the plates (grating) and steps. The plates can be adjusted from the original placement point horizontally, lengthening or shortening them towards or away from the stairs. The step locations in relation to the stringers move vertically from the ToS of the stringer.
As Polyplate	When checked, sets to model plate steel objects using polyplate CAD objects. Meaning, the start plate will be placed as a polyplate rather than being placed as a shape (flat bar).
Platform bottom	When checked, a platform is paced at the bottom of the staircase for the selected level. Used to include a platform at the bottom of the selected stair run. Moves the current staircase (NS) and ones above it from its current position. Disabled for the first stair run. A/a – These two fields are: A - Indicates the overall length of the platform, taken from the face of the lower stringer knee. Changing or modifying this value will also change the staircase location, and a - Indicates the length of the original stringer size, ‘`C1`’ shape in this support member that will remain under the platform. Effective only when the Exclude, next to `C2` is unchecked. The remainder of the length will use the ‘`C2`’ shape. Tip: If the Exclude option is set for C2, then the C1 shape is the full length of A. S1 – When two different members are being used (the `Platform bottom` is enabled and the support members are set using the `A/a`), then you can also decide from which side(s) is affected by these settings. Selects the side of the bottom platform which will not have a handrail (and panel, if set): NO - Neither side has an handrail for this platform. Right - The right side is open. Left - The left side is open. L/R - Both sides of the platform are enclosed with a handrail.
Platform top	Set this option to include a platform at the top of the selected stair run. C/c – These two fields are: C - Determines the overall length of the top platform taken from the face of the lower stringer knee, and c - Determines the length of the original stringer size, '`C1`' that will remain under the top platform C1 shape in this support member. Effective only when the Exclude, next to `C2` is checked. The remainder of the length will use the ‘`C2`’ shape. S2 – When two different members are being used (the `C/c` set in `Platform top`), then you can also decide from which side(s) is affected by these settings. It will also affect the handrails on the topmost platform and allow you to decide which way the staircase should be exited from. NO - Neither side has an handrail for this platform. Right - The right side is open. Left - The left side is open. L/R - Both sides of the platform are enclosed with a handrail. It does not affect the intermediate platform handrails, ( L in Handrail Parameters tab) .
Start plate	When checked, includes a base plate at the bottom of the first stair run stringer foot that can be adjusted using the below options. Enabled only if the ‘`Platform bottom`’ is unchecked. L1 – Sets the length of the start plate parallel to the bottom stringers. L2 – Sets the width of the start plate, i.e. the -the length perpendicular to the bottom stringers. S – Sets the thickness of the start plate. X/Y/Z – Coordinate offsets from the geometric center of the end of the stringer knee to the centroid of the start plate. X – Shifts the plate from its insertion point either inwards or outwards depending on the value entered. Y – Shifts the plate from its insertion point either forwards or backwards depending on the value entered. Z – Shifts the plate from its insertion point either upwards or downwards depending on the value entered. Note: The stringer will try to move with the plate when using this option.

Stair runs

Settings used to define the runs, level and rotation of the staircase.

[ ] (the first field) – displays the total number of stair runs in this stair. Indicates the amount of staircase runs to be inserted into the staircase element.
[+] – Adds a stair run to the stair.
[-] – Removes the top-most stair run from the stair.
NS – Select the run number to display and edit the stair run parameters. For multiple levels, allows selecting current level being modified.
R – Sets the rotation angle of the entire staircase from its initial direction, taken counter-clockwise from the X-axis defined when the stair was inserted. An angular value should be entered. Negative values may be used.

Stair specifications

Settings used to define the orientation and spacings of the staircase elements.

Q1 – Elevation at the bottom of the current stair run (bottom platform or landing). This is the starting elevation of the staircase/lower platform.
Q2 – Elevation at the top of the current stair run (top platform or landing). This refers to the ending elevation of the staircase/platform
A – Angle of the staircase, between the horizontal plane and the stair stringer. If set to zero, the angle is calculated from the other dimensions.
D – A clear distance between the flights and stairs. This is the distance between the outside of the current stair run and the previous (lower) stair run, for an R1 of 180° (inactive for stair run 1). A value should be entered here even if the stairs are not 180 degrees to one another.
P – The going distance of the steps, nose to nose, horizontal. Sets the distance between the nose of subsequent stair treads. Inactive if a value is provided for A.
La – Clear distance between handrails, etc. for the stair run. Sets the inside distance of the stringers.
R1 – Rotation angle between the current stair run and the previous (inactive for stair run 1).
Note: Grayed out on the first level.
- Invert – When checked, rotates the turn between stair runs clockwise in the angle selected in R1.
N – Number of rises in the stair run, including the top landing if selected. Typically one more than the amount of steps.
The adjacent field displays the actual measurement of the rise nose to nose vertically, the individual rise of each step.
G – Determines the end condition of the stringers for the flight of stairs selected in NS.
Sets the type of string cut/attachment for the knees at the base of the current stair run.
- No – No knee cut is used.
- Cut A – A vertical knee is used.
- Cut B – A knee is used with a bevel cut to the lower platform member.
Tip: When this field is selected, the current method of cut selected for G is displayed in the image (if visible).
Fam – When set up ahead of time, Part Family assignments can be selected from here.
Cl. – The Display Class assignments can be selected from here.

Shape

Settings used to define the stair shape and material.

C1 – Cheek (stringer) shape. Determines the basic shape for the stringer elements used in the staircase.
- (Select Shape tool) – Opens the Shape Selection dialog, used to select a catalog shape from a list of standard shapes and sizes.
Note: Changing this value affect the entire staircase.
C2 – Cheek shape low (platform support member). Adjusts the stringers shapes supporting the platforms.
- (Select Shape tool) – Opens the Shape Selection dialog, used to select a catalog shape from a list of standard shapes and sizes.
- Exclude – Cheek shape low (platform support member). When checked, enables the C2 stringer shapes for the entire staircase.
This option works with values (A/a, C/c, S1 and S2) located in the ‘Platform bottom’ and Platform top’ sections located near the bottom left of this dialog window.
M1 – Sets the material associated with the shape provided in C1.
M2 – Sets the material associated with the grating plates provided in C2.

E/e

Distance between the platform and the top-of-steel of the platform support member. Sets the horizontal and vertical (straight/oblique cheek shape) offsets of the plates (grating) and steps. The plates can be adjusted from the original placement point horizontally, lengthening or shortening them towards or away from the stairs. The step locations in relation to the stringers move vertically from the ToS of the stringer.

As Polyplate

When checked, sets to model plate steel objects using polyplate CAD objects. Meaning, the start plate will be placed as a polyplate rather than being placed as a shape (flat bar).

Platform bottom

When checked, a platform is paced at the bottom of the staircase for the selected level. Used to include a platform at the bottom of the selected stair run. Moves the current staircase (NS) and ones above it from its current position.

Disabled for the first stair run.

A/a – These two fields are:
- A - Indicates the overall length of the platform, taken from the face of the lower stringer knee. Changing or modifying this value will also change the staircase location, and
- a - Indicates the length of the original stringer size, ‘C1’ shape in this support member that will remain under the platform. Effective only when the Exclude, next to C2 is unchecked.
The remainder of the length will use the ‘C2’ shape.
Tip: If the Exclude option is set for C2, then the C1 shape is the full length of A.
S1 – When two different members are being used (the Platform bottom is enabled and the support members are set using the A/a), then you can also decide from which side(s) is affected by these settings.
Selects the side of the bottom platform which will not have a handrail (and panel, if set):
- NO - Neither side has an handrail for this platform.
- Right - The right side is open.
- Left - The left side is open.
- L/R - Both sides of the platform are enclosed with a handrail.

Platform top

Set this option to include a platform at the top of the selected stair run.

C/c – These two fields are:
- C - Determines the overall length of the top platform taken from the face of the lower stringer knee, and
- c - Determines the length of the original stringer size, 'C1' that will remain under the top platform C1 shape in this support member. Effective only when the Exclude, next to C2 is checked.
The remainder of the length will use the ‘C2’ shape.
S2 – When two different members are being used (the C/c set in Platform top), then you can also decide from which side(s) is affected by these settings. It will also affect the handrails on the topmost platform and allow you to decide which way the staircase should be exited from.
- NO - Neither side has an handrail for this platform.
- Right - The right side is open.
- Left - The left side is open.
- L/R - Both sides of the platform are enclosed with a handrail.

It does not affect the intermediate platform handrails, ( L in Handrail Parameters tab) .

Start plate

When checked, includes a base plate at the bottom of the first stair run stringer foot that can be adjusted using the below options. Enabled only if the ‘Platform bottom’ is unchecked.

L1 – Sets the length of the start plate parallel to the bottom stringers.
L2 – Sets the width of the start plate, i.e. the -the length perpendicular to the bottom stringers.
S – Sets the thickness of the start plate.
X/Y/Z – Coordinate offsets from the geometric center of the end of the stringer knee to the centroid of the start plate.
- X – Shifts the plate from its insertion point either inwards or outwards depending on the value entered.
- Y – Shifts the plate from its insertion point either forwards or backwards depending on the value entered.
- Z – Shifts the plate from its insertion point either upwards or downwards depending on the value entered.
  Note: The stringer will try to move with the plate when using this option.