Truss settings command (TSET)

Truss settings (TSET)

Command name: TRUSS_SETTINGS	Space(s): Layout space; detail spaces
Purpose: Framing settings for new* truss frames.
Usage:
1. Type TSET and press Enter. A dialog appears.
2. Enter settings in the Layouts tab, Options tab, and Claddings tab as needed.
3. Click Save.
Additional info: • TIP! Any changes you make in the TSET dialog will not affect* existing trusses. Type LI and select a truss member to edit its settings.

TSET Layouts tab

Layouts Options

System Name

Specifies a data file to use for truss frames.

Model Filter

Select Show Only Producible to limit the Model Name field to truss members that can be made with the roll-former selected in Machines Used.

Model Name

Sets the material, profile size, and section orientation (i.e., inline or back-to-back) to use for truss frames.

Machines Used

Sets the roll-formers that will be used to make the truss frames.

Roof Load

Sets the roofing material (e.g., tiles, sheets) that will be installed on trusses.

Roof Pitch

Sets the main roof slope as an angle, rise:run notation, or percentage.

Sub Pitch

Sets a secondary roof slope (i.e., hip or valley ends) as an angle, rise:run notation, or percentage.

Wind Speed

Specifies a wind speed to apply to trusses. Options are based on the Loading Design Code set in the BSET command dialog.

Ground Snow Load

Sets the amount of pressure for snow load on a roof truss in kPa (metric) or psf (imperial).

Reduced Level

Sets the height of the roof system measured from the ground to the bottom chord of the truss. Critical for detailing truss layouts in association with wall framing. Value must be < +/- 100mm (3 15/16") of wall height before loads are able to be transferred.

Hip Method

Option	Info
Half Truss	Places half trusses (jack rafters) at the hip end, attached to the last truncated truss, with top chords extended to hip lines (see illustration).
Rafters	Places rafters at the hip end and drops truncated truss heights to suit the rafters' web width (see illustration).
Panel Jacks	Places a roof panel over the top chords of the truncated trusses at the hip end. The panel runs from the first truncated truss to the hip apex (see illustration).
Full Panel Hip End	Places a roof with no half trusses at the hip end, allowing a detailer to manually add hip-end roof panels later.

O/H Method

Option	Info
Overhang Frames	Places a gable frame, with the gable end lowered by the section depth so that the frame is flush with the roof plane and cantilevers over the gable truss (with overhang determined by roof lines). See illustration.
Outriggers	Places verge outrigger members (over the first building truss and gable truss) that cantilever to the overhang roof line, each with a vertical piece at the end for attaching barge board. Designed so that every first, second, or third roof batten sits inside an outrigger. See illustration.
None	No gable end members or framing required.

Eave Options

Option	info
Standard Eave	Extends truss top chord past heel and to roof line.
Separate Eave	Ends truss top chord at heel point. Requires you to add a rafter member in the deep access (which will be attached to side of truss on site to create eave).
Dropped Eave	Adds members to truss top chord to create a trussed eave. Requires additional settings.
No Eave	No eaves will be added.
Reinforced Eave	Adds a C-section (on the deep axis) to a standard eave.
Extended Eave	Extends the truss bottom chord past the heel to the truss top chord. Effectively shortens the top chord cantilever distance.

Layout Colour

Sets the color to use for roof blocks.

Heel Height

Sets a truss heel height. Enter 0 to use automatic heel heights.

Bracing Type

Sets which strap type to use for bracing.

Eave Settings	Only appears if you select Dropped Eave for Eaves Options.
Sets the heights, setbacks and other configuration when using a trussed eave.

Truss Spacings

Setout Type

Option	Info
Setout to centre	Truss spacing is the distance from end of roof block to centerline (of the first truss) and from centerline to centerline (of subsequent trusses).
Setout to face	Truss spacing is distance from end of roof block to nearest face (of first truss) and from face to face (of subsequent trusses).

Truss Spacing

Sets maximum distance between trusses; spaces the trusses based on the selected Setout Type.

First Truncated Truss

Sets the first truncated truss position (distance from the end wall to the truss' centerline/face).

Truncated Truss Spacing

Sets what the maximum distance between the centerlines/faces of any two truncated trusses can be.

First Jack Rafter

Sets the first and second jack rafter (half truss) positions (distance from the hip end corner to the jack rafter's centerline/face).

Next Jack Rafter

Jack Rafter Spacing

Sets what the maximum distance between the centerlines of two jack rafters (half trusses).

Saddle Truss Spacing

Sets what the maximum distance between the centerlines/faces of saddle trusses can be.

Eave Search Distance

Sets the minimum distance between a roof support line and roof line for Steelwise to automatically add an eave (when you type TD).

Minimum Eave Length

Prevents Steelwise from adding an eave less than this value.

Truss Offset

Sets trusses and jacks to be automatically cantilevered by this value from a selected support line.

Ceiling Ties

Sets the spacing of ceiling ties along a truss' bottom chord. Only used if Ceiling Batten Spacing (under Batten Spacings) is 0 or > than Ceiling Ties value, or if Suspended Ceilings (under Loads) is set to True.

Outrigger Spacing

Sets the spacing between outrigger members. Only applies when you select Outriggers for O/H Method.

Truss Spacing Types
Standard Spacing Type	Spaces standard trusses evenly across area up to maximum distance set in Truss Spacings, or spaces at maximum distance, but with a Centre Gap, Starting Gap, or Finishing Gap.
Trunc Absolute Spacing	Select True to space members at maximum distance set under Truss Spacings. Select False to space members evenly across available area (up to the maximum set under Truss Spacings).
Jack Absolute Spacing
First Truncated as Girder	Replaces the first truncated truss at the hip end with a girder. Consequently, web members will be aligned with the oncoming hip end trusses and loads will be calculated using Additional Area method. Use this for roofs with heavy loads or when supported jack rafters are cantilevered past the support line.
Hip Jack as Girder	Replaces rafters at the hip end with a girder.
Trusses Use Nominal Spacing	Uses Truss Spacings settings for truss engineering instead of actual spacing when you type TD to input a truss.
Jacks Use Nominal Spacing
Crown Truss Option	Adds a crown to the inside, centerline, or outside of the truss apex, or no crown.

Tooling Options

See Panel settings command for info.

Loads	In kPa (metric) or psf (imperial) except where noted.
Roof Live Load	Load applies to the top chord of a truss.
Ceiling Live Load	Load applies to the bottom chord of a truss.
Roof Dead Load	Load applies to the top chord of a truss.
Ceiling Dead Load	Load applies to the bottom chord of a truss.
Ceiling Service Load	Load applies to the bottom chord of a truss.
Design Point Load	Load applies to mid span of each major segment of a truss in kN (metric) and kip (imperial).
Ceiling to Rafter or Top Chord
Suspended Ceilings	Makes deflection criteria for the bottom chord less restrictive (and uses Ceiling Ties setting under Truss Spacings).
Shuttered Conditions	Applies the internal wind pressure as the wind coefficient for the non-cyclonic internal wind pressure coefficient. Used in cases where there are shuttered openings.
Brick Clad Exterior	Reduces lateral wind applied to external wall frames.
Eave Point Load Location	Sets the distance from the end of the top chord where a vertical load is applied.

Batten Spacings
End Roof Batten Spacing	Sets the maximum distance allowed between the first (closest to eave) batten and the next batten. (Value is usually < Int Roof Batten spacing.)
Int Roof Batten Spacing	Sets the maximum distance between next battens. (Used for engineering calculations and total batten quantities.)
Ceiling Batten Spacing	Sets the maximum distance between ceiling support battens under a truss. Value is also used in engineering calculations for any battens specified in Ceiling Batten Settings.

Roof Batten Settings
First Batten Type	Specifies the material/product that will be used for the first (closest to eave) roof battens.
First Batten Length	Sets the finished cut length of first roof battens (used for BOM calculations).
First Batten Lap	Sets the maximum distance that two first battens can overlap (used for calculating required quantity).
First Fixing Type	Specifies the type and number of screws to use per connection to truss.
First Fixing Qty
Next Batten Type	Specifies the material/product to use and type and number of screws per truss connection and sets the finished cut length and overlap (for BOM calculations and quantity) for next battens.
Next Batten Length
Next Batten Lap
Next Fixing Type
Next Fixing Qty

Ceiling Batten Settings
End Ceiling Batten	Specifies the material/product that will be used for the first (closest to wall) ceiling battens.
Material Length	Sets the finished cut length of end ceiling battens (used for BOM calculations).
Lap Allowance	Sets the maximum distance that two end ceiling battens can overlap (used for calculating required quantity).
Int Ceiling Batten	Specifies the material/product that will be used for interior (not closest to wall) battens and sets their final cut size and maximum overlap (for required quantity and BOM calculations).
Material Length
Lap Allowance
First Fixing Type	Specifies the type and number of screws to use for end ceiling battens per truss connection.
First Fixing Qty
Next Fixing Type	Specifies the type and number of screws to use for interior (next) ceiling battens per truss connection.
Next Fixing Qty

Valley Supports
First Valley Support	Specifies what batten type will be used to support one side of a gutter in a valley.
Material Length	Sets the finished cut length of the first valley support batten (used for BOM calculations).
Lap Allowance	Sets the maximum distance that two first valley supports can overlap (used for calculating required quantity).
Next Valley Support	Specifies what batten type will be used to support the second side of a gutter in a valley and sets its finished cut length and maximum overlap (for BOM and quantity calculations).
Material Length
Lap Allowance

Solar Panels
Sets the panel dimensions, pane weight in kN/m2 (metric) or psf (imperial), and quantity, and the color and text to use for labelling.

Roof Panel Options
Sets the roof panel parameters for when you select Panel Jack for Hip Method.

TSET Options tab

Height Split Options
Max Height	Sets the maximum height allowed for a truss to be split horizontally into a main truss and top hat truss. tk
Required Gap	Sets the required distance between the top and bottom half of a split truss. This is generally equal to the depth of the battens that will be used to attach the top hat to/restrain the main truss.

Labels Options
prefixes for labels	Sets the prefix to use in labels for various trusses, girders, rafters, gable frames, and other members.
Continuous Numbering	Select True to start from 1 and continue for all truss types. Select False to start from 1 then restart for each truss type.
Auto Label Layout	Automatically insert a label when you input a truss.
Restart Label Zones	Restarts truss numbering per zone (if zones are set).
Use Individual Labels	Includes a unique number for each truss (instead of one number for multiple trusses of identical type and dimensions) in labels in a truss layout.

Report Options
report items	Includes information about truss sites (brackets and fixings); roof bracing, roof battens, and valley supports (including brackets and fixings); and ceiling battens when you run a truss layout report. tk
Minimum Uplift Value	Excludes the uplift value from a truss uplift report for any member that is below the set value.

Detail Sheet Options

(Sets info to include in drawing sheets in truss detail spaces)

Include Materials

Adds a bill of materials to the top of truss detail sheets.

Collect Common Lengths

Shows a quantity of members of the same length (instead of listing each member with its length separately).

Include Parts

Lists members in the BOM (and labels members in the elevation view) by common length (instead of listing/labelling each member separately).

Include Design Summary

Shows design and load codes, wind speed, and other truss design parameters (at bottom of detail sheet).

Show Major Dimensions

Includes dimensions for overall size, layout, and geometry.

Show Minor Dimensions

Includes size, position and spacing of components.

Show Engineering Percentages

Shows what percentage of the truss frame’s load capacity is being used (instead of just Pass or Fail). Greater than 100% counts as an engineering failure.

Show Uplifts

Includes uplift values for truss members.

Border Sized to Fit

Sizes each border independently (instead of using the largest size required for all borders).

Auto Update Supports

Sets Steelwise to update the relevant layout when you add a support line to a truss detail sheet by typing TAS.

Dimension Style

Option	Shows any dimension as...
Traditional	the distance between two points
Ordinate	the distance from one point

Engineering Detail Report

Dimension Options
Linear Dimensions	Generates dimensions by measuring between or to truss/floor center lines, front/rear edges, or from a selected point to the near or far side of a truss or floor.
Ordinate Dimensions
Width Options	Sets Steelwise to show frame widths when you type DM and sets the minimum length a member must be to show its width.

Filter Options

Sets the default filters that apply when you type TTD. Filters can be changed at any time.

Connection Options

Sets the data file used to define brackets, includes a separate connection plan, and adds connection parts drawings.

TSET Claddings tab

Claddings Options
System Name	NOTE! Claddings options are generally outside the scope of LGS/CFS frame production.
Roof Sheet
Curved Sheet
Insulation
Construction
Curved Sheet Radius

Flashing Options
Guttering	NOTE! Flashing options are generally outside the scope of LGS/CFS frame production
Fascia
Valley Guttering
Barge Capping
Hip Capping
Ridge Capping
Downpipes
Apron Flashing
Soaker Flashing
Curved Valley
Curved Valley
Curved Barge
Curved Soaker
Select Flashings by Points

Settings for Roof Sheet, Curved Sheet, Guttering, Fascia, Valley Guttering, Barge Capping, Hip Capping, Ridge Capping, Apron Flashing, and Soaker Flashing
Sets the tolerance (allowed variation in length or curvature), overlap length for and segment length (excluding roof and curved sheeting).