MWF Pro Truss. User Guide. Last Updated on November 9 th 2015

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Colleen Nora Sherman
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1 MWF Pro Truss User Guide Last Updated on November 9 th 2015

2 Table of contents 1. Introduction Things to Know Before Starting Revit Model Roof Envelopes General Envelope Creation Creating a Truss Envelope Automatically Creating/Editing a Truss Envelope Manually Truss Profile Envelopes Common Trusses Valley Trusses Hip Trusses Ridge And Parallel Jack Trusses Perpendicular Jack Trusses Ridge Truss Half Trusses Gable Ladder Hip End Framing an Envelope Truss Designer Settings General Settings Webbing Member sizes Physical Member Designer Preferences Truss Designer Assigning Properties of Element Lines Generating Web Lines Truss Properties Elements Visualization Flip the Direction of a Web Member

3 4.3 Deleting a Member of the Truss Adding a Member in the Truss Adding a new Node Adding On Member Nodes Adding Off Member Nodes Edit Instance Labels Edit Truss Label Mapping Edit Truss Label Regenerate Truss Tags Drawings Input / Output BOM Report Global Settings DXF Generator Floor Trusses Creating the Floor Panel Floor Truss Properties Changing Properties of Floor Truss Panel Floor Truss Cutback Options Floor Truss Panel Openings Adding / Deleting Trusses Editing a Single Truss Instance

4 1. Introduction This manual highlights the features that can be used to create a truss project, based on standard commercial definitions. Each topic demonstrates tools that you can use to complete tasks that are common to an overall workflow. You will learn some of the practices that can help you efficiently design and develop a truss framing project, using a 3D Revit model as a start point. 1.1 Things to Know Before Starting When starting a project and using MWF Pro Truss there are a few basic things one should know before getting started with the software Revit Model In general terms, you will need to have a complete and final Revit project consisting of, at the least, a roof and its supports: walls and/or any other structural element that will support or represent the support of the truss (beams or model lines) Roof Make sure layers, slope and overhangs of the roof are accurate; MWF Pro Truss will use the geometry and position of these elements to generate the truss envelope. By default, the truss envelope (lines created on the outermost boundary of the truss's top chord, bottom chord and heels) is created aligned to the outer face of the roof. An offset distance can be added to adjust the truss to the project needs. 3

Trusses can also be created using multiple roof elements. When creating a truss that is spanning multiple roof planes, MWF Pro Truss will consider the outmost face of the roofs to create its envelope.

5 Trusses can also be created using multiple roof elements. When creating a truss that is spanning multiple roof planes, MWF Pro Truss will consider the outmost face of the roofs to create its envelope. 2. Envelopes The first step towards the creation of the truss project is to create the truss envelopes. The envelope is a group of model lines create at the boundaries of the truss elements (when in elevation) and it is centred in the middle of the truss (when in plan view). It will represent the truss until the final creation of its members. 2.1 General Envelope Creation We will consider the General Envelope as being the result of using a section of the roof and its multiple planes to generate the truss envelope, or any other non-standard truss outline. There are two methods to creating truss envelopes: automatically and manually. The automatic route is fastest and it will create the envelopes solely based on the roof s geometry, distributed along a specific length of the roof, usually limited by its supports. The manual way of creating a truss envelope is a freehand method of creating any desired shape, not necessarily bound to a specific roof s geometry. This can be used for the creation of more complex shapes, or in any other scenario independent of a roof element. The next few topics in this guide will explain the possible ways to achieve these Creating a Truss Envelope Automatically Select the roof element and click the Create command in MWF Pro Truss. 4

You will then be prompted to pick the roof supports.

of the roof. Please note that beams and representative model lines can also be used as supports.

The Support Alignment dialog box will pop up. There you can select the alignment options based on the roof element.

The Wall Align option will be used for the alignment of the truss's heels.

6 You will then be prompted to pick the roof supports. Click the 'Supports' button in the Create Envelopes dialog box and select two parallel walls that will support that area of the roof. Please note that beams and representative model lines can also be used as supports. Once you are done selecting the walls, click the 'Finish' button on the top of Revit's drawing area. The Support Alignment dialog box will pop up. There you can select the alignment options based on the roof element. The Layer Align option will create the envelope at the layer selected in this drop down box. The Wall Align option will be used for the alignment of the truss's heels. Far would represent furthest from centre of truss. If you select a beam as a support, you can choose the alignment in the Beam Align area. With the Cantilever Offset option you can add an offset value for the heel positioning from the layer alignment that was chosen. Click Ok to continue with the envelope creation. 5

The Create Envelopes dialog box will pop up once again.

roof. If you need to space the trusses along a specific path, you can add an offset value to a picked location.

line in the project to use as reference. Note that the truss distribution is limited by the length of its shortest support.

7 The Create Envelopes dialog box will pop up once again. This time you can add options for the truss Spacing, placement of Offset From Outer Face for the chosen roof layer and to Add Additional Truss At End of roof. If you need to space the trusses along a specific path, you can add an offset value to a picked location. You will see a green reference line that you can use to select the offset point by clicking Pick in the Offsets area, or you can use any other model line in the project to use as reference. Note that the truss distribution is limited by the length of its shortest support. Click Ok in the Create Envelopes dialog box to add the truss envelopes and repeat the process by choosing new supports to complete your roof project. Model lines representing the truss envelopes will be created and grouped as Model Groups. They will be distributed along the roof based on the spacing previously chosen. 6

Then, select all the newly created lines and use Revit's Create Group command to group the lines into a model group. MWF Pro Truss will be able to use any model group to create a truss.

8 2.1.2 Creating/Editing a Truss Envelope Manually You can simply create a single truss envelope manually by using Revit commands. First, create the profile of the envelope using Revit Model Lines, in a section or elevation view of your Revit project. Then, select all the newly created lines and use Revit's Create Group command to group the lines into a model group. MWF Pro Truss will be able to use any model group to create a truss. Keep in mind that the truss will be created where the model group is, which may not be the desired location, if this is the case it is advised that you move it and copy the model groups to create new envelopes. You can also edit the model groups created (automatically or manually created envelopes) to adjust the lines to the needs of your project. 7

These tools will also generate envelopes that will later be used for the truss creation. 2.

9 2.2 Truss Profile Envelopes Depending on the shape of the roof and the truss project requirements, you might need to create extra standard truss profiles in some parts of the roof, sometimes not achievable with the general automatic creation that was previously explained in this guide. For that, you can use the available standard Truss Profile commands in the MWF Pro Truss menu. These tools will also generate envelopes that will later be used for the truss creation Common Trusses The Common Trusses tool will generate trusses that will be distributed along the whole length of the truss ridge, independent of the length of the roof supports (walls and/or beams). In the example below you can see that even when one of the support walls is shorter than the ridge's length, truss envelopes are still created. To create a common truss envelope, select the roof and click the Common Trusses command under the Truss Profile menu. A dialog box will pop up so you can select the Main Ridgeline and the parallel Supports of the roof. Adjust the options for offsets and spacing as explained in the previous topics of this guide. 8

2.2.2 Valley Trusses When you have a "T" shape roof, you can generate trusses that will gradually change their size using the roof's valley lines as supports.

Before using this tool, you will need to have at least one common truss created in that "T" part of the roof.

10 2.2.2 Valley Trusses When you have a "T" shape roof, you can generate trusses that will gradually change their size using the roof's valley lines as supports. For that, you can use the Valley Trusses tool. These trusses will be distributed along the ridge line of the roof. Before using this tool, you will need to have at least one common truss created in that "T" part of the roof. This truss will be used to limit the distribution of the valley trusses. To start, click the command Valley Trusses under the Truss Profile menu. A dialog box will pop up. Select the Main Ridgeline, Valley Lines and Last Truss as shown in the image below. Set the values for offsets and spacing as needed. 9

Once you click Ok, the Valley Trusses envelopes will be

2.3 Hip Trusses When you have a hipped roof, you can

using the roof's hip lines as references.

11 Once you click Ok, the Valley Trusses envelopes will be generated Hip Trusses When you have a hipped roof, you can generate trusses that will gradually change their height using the roof's hip lines as references. For that, you can use the Hip Trusses tool. To start, click the command Hip Trusses under the Truss Profile menu. 10

12 A dialog box will pop up. Select the Supports and Hip Lines as shown in the image below. Set the values for offsets and spacing as needed. The Support Alignment dialog box will pop up so you can change settings for the wall and layer alignments. Once you click Ok, the Hip Trusses envelopes will be generated. 11

Before using this tool, you will need to have at least one common truss created at the ridge/hip intersection or in the portion of the roof after the ridge.

13 2.2.4 Ridge And Parallel Jack Trusses When you have a hipped roof, you can generate Ridge Truss and Parallel Jack Truss envelopes in one shot. For that, you can use the Ridge and Parallel Jack Trusses tool. These truss envelopes will be distributed under (ridge truss) and along the hip line of the roof (parallel jack trusses). Before using this tool, you will need to have at least one common truss created at the ridge/hip intersection or in the portion of the roof after the ridge. This truss will be used as support for the ridge truss and to limit the distribution of the jack trusses. To start, click the command Ridge and Parallel Jack Trusses under the Truss Profile menu. A dialog box will pop up. Select the Support, the roof Face where the jack trusses will be placed and the Last Truss as shown in the image below. Set the values for offsets and spacing as needed. Once you click Ok, the Ridge Truss under the hip and Jack Truss envelopes will be generated. 12

Tip: Use this command to complete parts of the roof that require a truss under the hip line and additional half trusses on one side of the roof connected to the truss under the hip line (i.e. 'L' shaped roofs).

2.5 Perpendicular Jack Trusses Once you have created the Ridge Trusses and Parallel Jack Trusses as described in the previous topics of this guide on both sides of a hipped roof, you can complete the

14 Tip: Use this command to complete parts of the roof that require a truss under the hip line and additional half trusses on one side of the roof connected to the truss under the hip line (i.e. 'L' shaped roofs). If you need to create a complete truss system in a symmetrical hipped roof, you can use the tool Hip End that will be described later here in this guide Perpendicular Jack Trusses Once you have created the Ridge Trusses and Parallel Jack Trusses as described in the previous topics of this guide on both sides of a hipped roof, you can complete the rest of the roof by creating Perpendicular Jack Truss envelopes. For that, use the Perpendicular Jack Trusses tool. These trusses will be distributed along the hip lines of the roof and in the area between both hip lines, perpendicularly to the support truss. Before using this tool, you will need to have at least one common truss created at the ridge/hip intersection or in the portion of the roof after the ridge and the ridge trusses 13

support for the perpendicular jack trusses.

and Last Truss as shown in the image below.

15 created in the previous topic. The last 'common' truss and the ridge trusses will be used as support for the perpendicular jack trusses. To start, click the command Perpendicular Jack Trusses under the Truss Profile menu. A dialog box will pop up. Select the Support (wall/beam), the Ridge Trusses, Hip Lines and Last Truss as shown in the image below. Set the values for offsets and spacing as needed. Once you click Ok, the envelopes for the Perpendicular Jack Trusses will be generated. 14

2.2.6 Ridge Truss In a hipped roof, you can generate a single Ridge Truss envelope under the hip

Before using this tool, you will need to have at least one common truss created at the ridge/hip

This truss will be used as the support and limit of the ridge truss.

16 2.2.6 Ridge Truss In a hipped roof, you can generate a single Ridge Truss envelope under the hip line of the roof. For that, use the Ridge Trusses tool. Before using this tool, you will need to have at least one common truss created at the ridge/hip intersection or in the portion of the roof after the ridge. This truss will be used as the support and limit of the ridge truss. To start, click the command Ridge Trusses under the Truss Profile menu. A dialog box will pop up. Select the Supports and Hip Line as shown in the image below. Set the values for offsets and spacing as needed. 15

17 The Support Alignment dialog box will pop up so you can change settings for the wall and layer alignments. Once you click Ok, the Ridge Truss envelope will be generated. 16

2.2.7 Half Trusses You can quickly place Half Truss envelopes in your project by using the

18 2.2.7 Half Trusses You can quickly place Half Truss envelopes in your project by using the Ridge Trusses tool. To use this tool, you only need a roof and its support. To start, click the command Half Trusses under the Truss Profile menu. A dialog box will pop up. Select the Supports and Hip Line as shown in the image below. Set the values for offsets and spacing as needed. The Support Alignment dialog box will pop up so you can change settings for the wall and layer alignments. Once you click Ok, the envelopes for the Half Trusses will be generated. 17

19 2.2.8 Gable Ladder IN CONSTRUCTION Gable Ladder trusses can be placed in the project by using the Gable Ladder tool. Before using this tool, you will need to have at least one common truss created that will be used as support and limit of the gable ladder truss. To start, click the command Gable Ladder under the Truss Profile menu. A dialog box will pop up. Select the Supports and xxxxxx as shown in the image below. Set the values for offsets as needed. INSERT IMAGE Once you click Ok, the Gable Ladder Truss envelope will be generated. INSERT IMAGE Hip End When you have a hipped roof that has parallel supports on its sides, you can generate a complete group of truss envelopes in one shot (Ridge, Parallel and Perpendicular Jack trusses). For that, you can use the Hip End tool. These truss envelopes will be distributed under (ridge truss) and along the hip line of the roof (parallel and perpendicular jack trusses). Before using this tool, you will need to have at least one common truss created at the ridge/hip intersection or in the portion of the roof after the ridge. This truss will be used as support for the ridge truss and to limit the distribution of the jack trusses. 18

Select Hip Lines, Side Supports, End Support, and Last Truss as shown in the image

Once you click Ok, the Ridge Trusses envelopes under the hip lines and Jack Trusses

20 To start, click the command Hip End under the Truss Profile menu. A dialog box will pop up. Select Hip Lines, Side Supports, End Support, and Last Truss as shown in the image below. Set the values for offsets and spacing as needed. Once you click Ok, the Ridge Trusses envelopes under the hip lines and Jack Trusses envelopes will be generated. The Hip End tool will align trusses according to the selected spacing. It will also place a truss in the intersection of the ridge truss with the last common truss. 19

3. Framing an Envelope Once the truss envelope is created, you can create the truss by clicking the Create command. MWF Pro Truss will use the envelope as a boundary for the truss elements.

In the truss creation process, you will have options to select the truss types, member types, designer settings, webbing settings and many other features.

21 3. Framing an Envelope Once the truss envelope is created, you can create the truss by clicking the Create command. MWF Pro Truss will use the envelope as a boundary for the truss elements. MWF Pro Truss uses a Truss Designer engine to create and place all members according to the user's needs. In the truss creation process, you will have options to select the truss types, member types, designer settings, webbing settings and many other features. We will review what is involved in this process in the next few topics of this guide. 3.1 Truss Designer Settings When you have an envelope selected and you click the Create command, the Create Truss dialog box will open General Settings In the General area you can set the display units of the truss designer, the Truss category and truss type. 20

22 3.1.2 Webbing When you click the Webbing option you can find settings for the diagonal and vertical members of the truss. Diagonals Orientation: In tension Diagonal members will be distributed in one orientation. Left-Right Diagonal members will be distributed in double orientation, starting from the ends towards the centre of the truss. Verticals Only Diagonal members will not be placed. Nodes Only Nodes will be shown in truss designer. Neither verticals nor diagonal members will be placed. 21

Verticals Positions: Equal Intersection Vertical members will be equally distributed

members will be distributed using a fixed spacing, starting from the ends towards the

If the distribution of the members creates a bay smaller than the required value, the

23 Verticals Positions: Equal Intersection Vertical members will be equally distributed considering the values for Top and/or Bottom Maximum Spacing Fixed Width Vertical members will be distributed using a fixed spacing, starting from the ends towards the centre of the truss. If the distribution of the members creates a bay smaller than the required value, the vertical member will not be placed unless the option 'Extra Vertical at Chase' is selected. The option Minimum Chase will set the limit for the value of a diagonal member. 22

3.1.3 Member sizes Select the member sizes to

chord, bottom chord, webbing members and heels.

area you can add extra tolerances for the Top

configuration for the end of the elements.

24 3.1.3 Member sizes Select the member sizes to use in the truss by clicking the option Member sizes. You can pick different member sizes for top chord, bottom chord, webbing members and heels Physical Member In the Physical Member area you can add extra tolerances for the Top and Bottom Tracks insertion and also choose a configuration for the end of the elements. Chord Pitch Break - Open: Chord Pitch Break - Lapped: Chord End Cut - In: Chord End Cut - Out: 23

3.1.5 Designer Preferences Some extra settings can be found in the Designer Preferences area. These are configurations for the elements that we will see once the truss designer is opened.

The Truss Designer is an advanced tool that allows the free creation of a truss with any possible shape and various configurations.

25 3.1.5 Designer Preferences Some extra settings can be found in the Designer Preferences area. These are configurations for the elements that we will see once the truss designer is opened. 3.2 Truss Designer Once you click Ok on the configuration dialog box, the Truss Designer will open. The Truss Designer is an advanced tool that allows the free creation of a truss with any possible shape and various configurations. If you started this process by using the Create command to create a truss from an envelope, you will see the basic elements of the truss - Top Chord, Bottom Chord and Heels - in the truss designer area. Using the truss designer's commands, you will need to adjust the properties of the existing lines and create the webbing elements. 24

These are the different element types in the Truss Designer: -Top Track - Bottom Track - Heel - Diagonal Web - Vertical Web - Oddball When you select any of the existing lines and 'doubleclick' or

26 3.2.1 Assigning Properties of Element Lines Every line in the Truss Designer represents one type of truss element. It is important to match the line properties with the real type of element so the truss can be properly created. These are the different element types in the Truss Designer: -Top Track - Bottom Track - Heel - Diagonal Web - Vertical Web - Oddball When you select any of the existing lines and 'doubleclick' or press 'enter' in your keyboard, the Line Options dialog box will open. Select the option that represents the use of the selected element line. You can also change the size of the element Generating Web Lines To generate the truss webbing, click the tool Generate Web in the Truss Designer. Nodes will be created in the top and bottom chords and spaced based on the existent settings of the Truss Designer's Web configuration tab. They will be used to represent the intersection of vertical and diagonal web lines with the top and bottom chords. The lines representing the web elements will be created, connecting the nodes. 25

Click Ok in the Truss Designer dialog box to have the

The model group will be deleted and a new 'Assemblies'

Truss Properties To change any properties of the truss

your drawing and click the command Properties in MWF Pro

Many different possibilities of changes in the

4.1 Elements Visualization The model lines created in

heels, top, bottom chords, and the centre line of the

In the 'View' tab you can change the visualization

27 Click Ok in the Truss Designer dialog box to have the truss created in your project. The model group will be deleted and a new 'Assemblies' element will take its place. 4. Truss Properties To change any properties of the truss using the Truss Designer, simply select the truss in your drawing and click the command Properties in MWF Pro Truss. Many different possibilities of changes in the properties of the truss will be discussed in this topic. 4.1 Elements Visualization The model lines created in the Truss Designer represent the outer boundary of the heels, top, bottom chords, and the centre line of the webbing. In the 'View' tab you can change the visualization settings so you can see the Physical Model representation. Choose Analysis View to see the analytical lines of the truss' elements. You can see both physical and analytical representations by clicking the option Physical and Analysis. 26

4.2 Flip the Direction of a Web Member You can select any of the diagonal web lines

Once you click Ok in the Truss designer, the truss will be updated. 4.

you have the truss selected in your project.

to delete and hit the delete button in your keyboard.

28 4.2 Flip the Direction of a Web Member You can select any of the diagonal web lines and click the spacebar in your keyboard to have the line flipped. Once you click Ok in the Truss designer, the truss will be updated. 4.3 Deleting a Member of the Truss A member of the truss can be deleted when working within the truss designer. Open the properties of the truss by clicking Properties in the MWF Pro Truss when you have the truss selected in your project. In the Truss Designer, simply select the line that represents the element you want to delete and hit the delete button in your keyboard. The element will be deleted and the truss will be updated once you click Ok in the Truss Designer. Nodes can also be deleting using the same process. If a node is deleted, the lines that are connected to this node will also be deleted. 27

4.4 Adding a Member in the Truss A member of the truss can be added to the truss by adding new lines in the Truss Designer.

Open the properties of the truss by clicking Properties in the MWF Pro Truss when you have the truss selected in your project.

Hover over the second node and right-click with your mouse to create the line. A new line representing a member will be created.

29 4.4 Adding a Member in the Truss A member of the truss can be added to the truss by adding new lines in the Truss Designer. A new line can only be created between two nodes. Open the properties of the truss by clicking Properties in the MWF Pro Truss when you have the truss selected in your project. In the Truss Designer, hover over the first node that will connect the line and left-click. Hover over the second node and right-click with your mouse to create the line. A new line representing a member will be created. Make sure you 'double-click' the newly created line to give a proper representation of its use in the Physical Members Settings. 4.5 Adding a new Node To create lines (and subsequently elements) you will need first to create the nodes (or points) that will represent the intersection or end of the element. Two types of nodes can be created: On Member and Off Member Adding On Member Nodes In the Truss Designer interface, select the option On Member Point under Element Creation. 28

Tip: An On Member Point can also be created outside the limits of the host line, but in its same direction.

30 Click a line that will be the host of the new node. The areas L1 and L2 will show the node numbers that represents the limits of this line. Select a node in this line that will serve as reference for the new node. Tip: An On Member Point can also be created outside the limits of the host line, but in its same direction. Add the value for the horizontal or vertical distance from the reference node. In this example, the new node will be 5 feet distant from the reference node (6), measured horizontally. Once you click the option for orientation - Horizontal or Vertical - the new node will be created. 29

4.5.2 Adding Off Member Nodes To add an off member node you will

Add true coordinate values and click Coord Node to have the new

Tip: You can pick an existent node and use its coordinate values as

You can also create a new node using coordinates relative to

31 4.5.2 Adding Off Member Nodes To add an off member node you will use the option Off Member Point under Element Creation. Add true coordinate values and click Coord Node to have the new point created. Tip: You can pick an existent node and use its coordinate values as a reference for the creation of the new one. You can also create a new node using coordinates relative to existent nodes. For that, pick an existing node and insert the values for the new node relative to the existent one. Click the option OS Node to create the node. 30

32 5. Edit Instance Command under construction. 6. Labels Command under construction. 6.1 Edit Truss Label Mapping Command under construction. 6.2 Edit Truss Label Command under construction. 6.3 Regenerate Truss Tags Command under construction. 7. Drawings Command under construction. 8. Input / Output Command under construction. 8.1 BOM Report Command under construction. 8.2 Global Settings Command under construction. 8.3 DXF Generator Command under construction. 31

9. Floor Trusses Floor trusses can also be created in a floor.

or create the boundaries by using model lines.

A dialog box to select a template will show up.

Floor Trusses - Wall Truss Select one of them to create the floor panel.

33 9. Floor Trusses Floor trusses can also be created in a floor. For that, it is necessary to have a MWF Floor Panel existent in your Revit project so the trusses can be placed as joists members. 9.1 Creating the Floor Panel To create a floor panel boundary, you can either use a Revit Floor as base, or create the boundaries by using model lines. Select either the floor object or the group of model lines and click Create in MWF Pro Floor menu. A dialog box to select a template will show up. The following two templates are designated to create floor trusses: LGS - Floor Trusses - B2B LGS - Floor Trusses - Wall Truss Select one of them to create the floor panel. Changes can be made to any of the floor panels by modifying its properties. Select any of the components of the floor boundary (Label, Icon, Nodes or model lines) and click the command Regenerate to have the truss members created in the floor. For more information on how to create and/or modify floor panel boundaries, please refer to the MWF Pro Floor Tutorial. 32

9.2 Floor Truss Properties Once the floor panel is created you can change its properties by selecting any member of the panel and clicking the Properties command in MWF Pro Floor.

The main difference between truss floor type properties from common joist floor type properties is the user interface that opens when you click End Joists or Joist under the Member Properties tab. 9.

34 9.2 Floor Truss Properties Once the floor panel is created you can change its properties by selecting any member of the panel and clicking the Properties command in MWF Pro Floor. The access to the properties' options of a truss floor panel is similar to the one of a joist floor panel (please refer to MWF Pro Floor Tutorial to learn how to change floor properties). The main difference between truss floor type properties from common joist floor type properties is the user interface that opens when you click End Joists or Joist under the Member Properties tab Changing Properties of Floor Truss Panel Double-clicking the Joist properties icon will show up the truss Joist Settings dialog box. Set the value for Truss Depth in the designated area. All Truss elements will be created with this height (top chord to bottom chord). 33

All other options from the Joist Settings dialog box are similar to the options of a roof truss.

1 - Truss Designer Settings of this tutorial to have more information on how to change these properties.

3 Floor Truss Panel Openings Just as in a common floor panel, Truss Floor panel openings can be created

placing 'model lines' at the desired location for the opening, selecting these model lines and clicking

35 All other options from the Joist Settings dialog box are similar to the options of a roof truss. Please refer to the topic Truss Designer Settings of this tutorial to have more information on how to change these properties Floor Truss Cutback Options Double-clicking the Cutback icon will show up the truss Cutback dialog box. A cutback distance can be added between end of trusses and the profile line that originated the floor panel Floor Truss Panel Openings Just as in a common floor panel, Truss Floor panel openings can be created automatically by having an opening in the floor object during the creation of the floor panel, or by placing 'model lines' at the desired location for the opening, selecting these model lines and clicking the command Create Opening in MWF Pro Floor menu. More information on how to create or modify floor openings can be found in MWF Pro Floor tutorial. The properties of the truss floor opening members can be accessed by clicking the Manage Opening Types command in the MWF Pro Floor menu. 34

In the General tab the values for Tolerance for the opening boundaries and Minimum Partial Joist

36 Select the desired opening type and click Modify in the Opening Types Manager to modify its properties. In the General tab the values for Tolerance for the opening boundaries and Minimum Partial Joist Length can be added. The tabs Header, Trimmer and Supporting Joist will open the truss designer settings interface and members properties can be changed just as described previously here in this tutorial. 35

In the Cutbacks tab values for offsets between members of the floor opening can be

4 Adding / Deleting Trusses Trusses can be added to a panel and can also be deleted from

using MWF Pro Truss commands), select it and click the command Add Member from the Panel

37 In the Cutbacks tab values for offsets between members of the floor opening can be adjusted Adding / Deleting Trusses Trusses can be added to a panel and can also be deleted from it. To add a truss to a panel, copy an existent truss (or create one from scratch by using MWF Pro Truss commands), select it and click the command Add Member from the Panel dropdown menu. Select any existent member of the panel. A dialog box will pop up to add a Floor Truss tag to the new truss. Click Add and the truss will be added to the panel. 36

To delete a truss from a panel simply select the truss to be deleted and click Delete Generated from the Panel dropdown menu. 9.2.5 Editing a Single Truss Instance Trusses can be edited individually.

38 To delete a truss from a panel simply select the truss to be deleted and click Delete Generated from the Panel dropdown menu Editing a Single Truss Instance Trusses can be edited individually. For that, select the truss to be edited and click Properties in the MWF Pro Truss menu. The Truss Designer interface will open. Please refer to topic '4. Truss Properties' in this tutorial to learn how to modify truss members and properties. 37