Framing Configuration may be found in two locations: 


You can add eight different types of continuous or non-continuous Joists, Rafters or Bridging into framing using different rules.

Type – select the family and type that will be used for Joist/Rafter/Bridging. 

Width (b) – shows b size of selected type.

Depth (h,d) – shows h or d size of selected type. 

Define Depth (h,d) by Layer Thickness Roof+ will automatically create new type for selected family with new depth equal to selected roof layer thickness. 

Apply J/R/B (Joist/Rafter/Bridging)

Apply J/R/B (Joist/Rafter/Bridging) – choose whether or not the rules listed below should be applied to the frame.

Rotate by Slope

Rotate by Slope – Joist/Rafter/Bridging can be rotated according to roof slope.

Example: Rotate by Slope is ON:

Example: Rotate by Slope is OFF:

Rotate 90°

Rotate 90° – Joist/Rafter/Bridging can be rotated 90 degrees from it's initial position.

Example: Rotate 90° is ON:

Example: Rotate 90° is OFF:

Apply by Roof Type

Apply by Roof Type – option to add Joist/Rafter/Bridging only for Structural, Non-structural, or Always selected roofs in the project. Usually used for floors and walls. 

Use Short Noggings

Use Short Noggings – select if noggings have to split between the joists.

Example: Use Short Noggings is ON:

Example: Use Short Noggings is OFF:

Cut Type

Cut Type – select Joist/Rafter/Bridging cutting type.

Example: when Don't Cut is selected:

Example: when Cut Joists is selected:

Cut Ends Type

Cut Ends Type – select Joist/Rafter/Bridging end cutting type.

Example: when Don't Cut is selected:

Example: when Cut Joists is selected:

Example: when Cut Bridging/Nogging/Blocking is selected:

Diagonal Placement

Diagonal Placement – options to place Joist/Rafter/Bridging parallel to top/bottom sloped rim joists or parallel on horizontal rim joists. 

Example: Blocking is placed parallel to top sloped rim joist:

Array1 or Array2

A set of rules for placing many Joists/Rafters/Bridging.

Array 1 or Array 2 – there are options to apply three array rules: Array from Base, End or Center of the frame.

Frame Side

Frame Side – select whether Joist/Rafter/Bridging should be applied in the center, external (top), or internal (bottom) side of the frame. 

Top/Bottom Plate Support (Auto)

Top/Bottom Plate Support (Auto) – option to add top/bottom plate/joist supports and align with top/bottom rim joist automatically. In such cases, the Offset from End/Base Face option is not available because it is calculated automatically.

Offset from Base/End – Joist/Rafter/Bridging offset from top or bottom rim joist top face.

Spacing – spacing between rows of Joist/Rafter/Bridging.

Number – the number of Joist/Rafter/Bridging rows.

Measure to

Measure to – measures the offset and spacing to Joist/Rafter/Bridging top/bottom or center. 

Build in Place

Build in Place – writes Yes/No information into the Joist/Rafter/Bridging instance parameter if it is build-in-place or is prefabricated with the whole roof frame. Later this parameter can be used in schedules or view filters.


For First&Last Bays – select if bays should be applied for both sides of roof.

Number of Bays – number of bays from both roof sides.

Use Alternating Offset

Use Alternating Offset – use linear (no offset) or alternating offset of Joist/Rafter/Bridging rows.

Placement Limits

Placement Limits – Joist/Rafter/Bridging placement. It can go: Throughout the frame, Throughout except all Openings, Only through all Openings, Only through Windows, Only through Doors, or Only through Openings.

Example: Here is bridging added automatically only above the opening:

When Opening Width is over and When Opening Width is less than – here you can predefine the opening sizes for placing Joist/Rafter/Bridging. For example, big openings can have additional bridging above or below.

Cross Diagonal Cripple Joists

Cross Diagonal Cripple Joists – select if Joist/Rafter/Bridging should go through diagonal cripple joists.

Cross Sloped Rim Joists

Cross Sloped Rim Joists – select if Joist/Rafter/Bridging should go through places with sloped rim joists.