Purlin Roof Prerequisite Knowledge Previous knowledge of the following commands is required to complete this lesson. Sketching (Line, Rectangle, Add Relations, Dimensioning), Inserting Planes, Extrude, Assemblies, Linear pattern, Mirror. Focus of the Lesson On completion of this lesson you will have used: Inserted Planes. Edit Appearance. Linear Pattern. Created an Assembly. Linear Pattern of components in Assembly. Mirroring of components in Assembly. Commands Used Getting started This lesson includes Sketching (line, circle, arc, Smart Dimension), Inserting Planes, Cut Extrude, Add relations, Appearance and Assemblies, Linear pattern and Mirror. Create a New Folder in your chosen location called Purlin Roof. The nine parts that make up the project will be saved here. Design & Communication Graphics 1
Part One - Cavity wall Open New Part from the SolidWorks Document dialog box. Select File. Click Save as on the standard toolbar. Filename Cavity wall. Save this part in the Purlin Roof folder. Continue to save periodically throughout the exercise. Create sketch Create a sketch on the Front Plane using the dimensions shown. Draw a Centreline as shown 50mm from the rectangle. Mirror the rectangle to sketch the outer wall. Confirm the sketch. Extrude the sketch to a depth of 3000mm using a Blind End Condition. Edit Appearance/ Texture Right click on the extrusion as shown and change the texture to concrete 1 under the texture stone. Rename the extrusion as Cavity wall. Design & Communication Graphics 2
Sketching the Mortar Joint Select the Rectangle command and draw the rectangle shown on the front face of the inner block. Using Add Relations insure the length of the rectangle and the edge of the block are equal by using the coincident command. Add the dimensions shown to fully define the sketch. Exit sketch and Extrude Exit the sketch and extrude to a distance of 3000mm. Make sure to deselect Merge result. Design & Communication Graphics 3
Edit Appearance/ Texture Under the Texture stone select concrete 2. Rename the extrusion as Mortar bed. Drawing Block on flat In the sketch menu select Rectangle. Start the rectangle from the point shown. Add the dimensions shown. Exit the sketch and Extrude by 3000mm. Deselect Merge results. Add the texture as before. Rename Extrusion as Block on flat. Add the mortar bed to the outside block. Using the line command draw the following sketch. Extrude by 3000mm and deselect merge results. Add the texture for mortar as before. Cutting away excess Blockwork Create a new sketch on the front face as shown using line command. Start line from the midpoint of the block on flat as shown. Draw triangle to the dimensions shown. Design & Communication Graphics 4
Extrude Cut Exit the sketch and Extrude Cut through all. Add the texture of the blocks to the cut faces. Save the part. Part Two - THE WALL PLATE Click File, New on the standard toolbar. Select Part from the New SolidWorks Document dialog box. Select OK Saving the Part Select File, Save as on the standard toolbar. Save the part in the Purlin Roof folder as before under the name Wall Plate. Sketch On the front plane sketch the rectangle to the following dimensions. Exit the sketch. Extrude by 3000mm. Rename extrusion as wall plate Edit Material Apply a Pine texture to the object by clicking on Wall Plate /Appearance/Texture in the feature manager tree. Design & Communication Graphics 5
Edit Material for End Grain On the drawing highlight the end grain. Right click to show the toolbar as shown.. Select Grain 2 under the Texture Selection titled Wood. Change the angle of the grain as shown. Click OK button to accept texture Save the part. Design & Communication Graphics 6
Part Three - Galvanised Straps Click File, New on the standard toolbar. Select Part from the New SolidWorks Document dialog box. Select OK Saving the Part Select File, Save as on the standard toolbar. Save the part in the Purlin Roof folder as before under the name Galvanised Straps. Sketch Create a sketch on the Front Plane using the Line command. Use the offset command to draw the outer profile a distance of 5mm. Draw lines at each end to close the profile. Add the dimensions shown. Exit the sketch Extrude by 35mm. Rename Extrusion as Metal strap. Sketching the Holes Select sketch and sketch on the front face as shown. Draw a Centreline at the midpoints. Draw another centre line at an angle as shown. Design & Communication Graphics 7
Add Relations Using add relations make the midpoint of the sloping line coincident with the vertical centre line. Add the dimensions shown. Select circle and draw the three circles Using add relations make them equal. Set the diameter to 6mm. Extrude Cut Exit the sketch. Select extrude cut through all to drill the holes. Linear Pattern Staying in the Features menu select Linear Pattern Add the information shown and Accept. The same procedure is used to drill the holes on the top face. Draw a centreline from the mid points of the two edges. Draw a centreline at an angle shown. Select Point and place a point at its midpoint. Design & Communication Graphics 8
Using Add Relations make the point and the centre line Coincident. Draw circles on the three points as before. Use Add Relations to make them equal. dimension as shown. Exit sketch and Extrude Cut through all. Linear Pattern Use the linear pattern command to complete the holes. Edit Material Change the material by right clicking on material in the design tree. Select Galvanized steel under the steel menu. Accept. Save the Part. Design & Communication Graphics 9
New Part Sketch Part Four - Common Rafter Select a New part from the SolidWorks Document dialog box. Save this part as Common rafter in the Purlin Roof folder. On the Front Plane draw the sketch shown using centerline command. Using line command, draw the profile shown starting at the origin. Use Add Relations insure the sloping lines are parallel with the centerline. Add the following measurements. Exit sketch and Extrude a distance of 38mm. Rename extrusion as Common rafter To draw the birds mouth Select sketch and select the front face as shown. Design & Communication Graphics 10
Make sure the centerline is visible from the last sketch. Birds mouth for Wall plate Draw a triangle using line command. Start from the centerline of the previous sketch. Use Add Relations to insure the centreline and the corner of the triangle are coincident Birds mouth for Purlin Repeat this process to draw the birds mouth for the purlin. Exit the sketch and select Extrude cut through all. Rename cuts as birds mouth. Edit Material Change the Material to Pine Save. Design & Communication Graphics 11
New Part Part Five - Purlin Open a new part. Save the part as Purlin in the Purlin Roof folder. Sketch Select the Right Plane. Draw the Rectangle to the given dimensions. Exit the sketch and Extrude a distance of 3000mm. Rename the extrusion as Purlin. Edit Material Apply a Pine texture to the object. Apply Grain 2 texture to the end grain similar to the wall plate.. Save. Part Six - Ridge Board New Part Open a new part Save the part as Ridge board in the Purlin Roof folder. Select the Right Plane and draw a Rectangle to the given dimensions. Design & Communication Graphics 12
Exit the sketch and Extrude a distance of 3000mm. Rename the extrusion as Ridge board. Edit Material Apply a Pine texture to the part. Apply Grain 2 texture to the end grain. Save. Part Seven - Ceiling joist New Part Sketch Open a new part Save the part as Ceiling joist in the Purlin Roof folder. Select the Front Plane. Use the Line command to draw the shape. Make the midpoint of the bottom line coincident with the origin. Add the measurements shown. Exit the sketch and Extrude by 50mm. Rename the extrusion as Ceiling joist. Edit Material Apply a pine texture to the part.. Apply Grain 2 texture to the end grain. Save. Design & Communication Graphics 13
Part Eight - BINDER. New Part Sketch Open a new part, Save part as Binder in the Purlin Roof folder. Draw the Rectangle on the Front Plane to the following measurements Exit the sketch and extrude by 3000m. Rename the extrusion as binder. Edit Material Apply a Pine texture to the part. Apply Grain 2 texture to the end grain Save. Part Nine - Hanger. New Part Open a new part Save the part as Hanger in the Purlin Roof folder. Sketch Draw on the Front Plane the following sketch. Add the dimensions shown. Exit the sketch and Extrude by 38mm. Edit Material Rename the extrusion as Hanger. Apply a Pine texture to the part. Apply Grain 2 texture to the end grain Save. Design & Communication Graphics 14
Part Ten Fascia Board New Part Sketch Open a new part Save the part as Fascia board in the Purlin Roof folder. Draw the Rectangle on the Right Plane to the given dimensions. Exit the sketch and Extrude by 3000mm Rename the extrusion as Fascia board. Edit Material Apply a Mahogany texture to the part. Save. Part Eleven - Soffit Board New Part Sketch Open a new part. Save the part as Soffit in the Purlin Roof folder. Draw a Rectangle on the Front Plane to the dimensions shown. Exit the sketch and Extrude by 3000mm. Rename the extrusion as Soffit. Design & Communication Graphics 15
Sketching the Vent In the sketch command select the Top Plane. Draw the Rectangle shown. Add Relations Select Add Relations and make the two points shown Coincident. Add the dimension. Exit the sketch and Extrude by 5mm. Make sure to deselect merge results. Rename the extrusion as vent. Sketch Create a new sketch on the face of the vent as shown. Draw a centerline through the midpoints. Use the line command to draw the profile. Design & Communication Graphics 16
Use Add relations make the mid point of the line and the centerline coincident. Add the following dimensions. Exit the sketch. Select Extrude Cut through all. Rename the cut extrusion as holes. Linear Pattern Select linear pattern from the feature commands Fill in the following data and accept. Edit Material Apply a Mahogany texture to the soffit. Change the colour of the vent and the holes to brown as shown. Design & Communication Graphics 17
Rurlin Roof Assembley The part files for this assembley are saved in the folder titled Purlin Roof. Open an existing part Open the part called cavity wall. Click Make Assembley from Part/Assembley Insert component dialog box appears with Cavity wall displayed. Click on in the property manager. The part origin will snap to the origin of the assembly. Save Select File, Save as on the standard toolbar. Save the assembly as Purlin Roof in the same folder as its parts. Adding Component Select Insert component from the Assembly toolbar. Choose Browse from the Insert Component dialog box. Choose Wall Plate and click in the graphics area to place it in as shown. Design & Communication Graphics 18
Insert Mates Select the mate toolbar. Mate the top of the wall with the underside of the wallplate shown. A Coincident Mate will be selected by default. Select OK Further Mates Select the edge of the wall and the edge of the wall plate shown. A Coincident Mate will be selected by default. Select OK Select the end of the wall and the end of the wall plate. Select OK to apply the mate. The wall plate is now fixed in position. Select 0K again to exit the property manager Insert Galvanized Straps Select Insert Component from the Assembley toolbar. Choose Browse and select Galvanized straps. Drop it in as shown. Design & Communication Graphics 19
Insert Mates Select Mate. Mate the inside of the galvanized strap with the edge of the wall shown. Select OK to apply the mate. Mate the top of the wall plate with the underside of the galvanized strap. Select OK to apply the mate. Finally mate the edge of the strap with the end of the wall but with an offset distance of 100mm. Select OK to accept the mate. Select OK again to exit the property manager. Insert Common Rafter Select Insert Component. Click Browse and select Common Rafter. Drop it into the drawing area. Insert Mates Select Mate. Mate the top of the wallplate with the underside of the birds mouth as shown. Select OK to accept the mate.. Design & Communication Graphics 20
Mate the outside of the wall plate with the other face of the birds mouth shown. Select OK to apply the mate. Finally mate the rafter to the end of the wall Select OK to apply the mate. Select OK again to exit the the property manager. Insert the Purlin. Select Insert Component. Click Browse and open Purlin. Drop it into the drawing area. Rotate if necessary using the Rotate Component button Insert Mates Mate the faces of the birdsmouth to the relevant sides of the purlin. Finally mate the end of the purlin with the outside of the rafter shown. Accept the mates Design & Communication Graphics 21
Insert Ridge Board. Select Insert Component and bring in the ridge board. Insert Mates Select mate. Mate the side of the ridge board with the cut face of the rafter. Select OK to apply the mate. Mate the end of the ridge board with the side of the rafter. Select OK to apply. Finally mate the top edge of the rafter with the edge of the ridge shown. Mirror components. By selecting the mirror feature from the feature commands and mirroring about a vertical plane, the right side of the purlin roof is achieved without the need of bringing in the parts again. When using the mirror feature a plane or face about which to mirror is required. Design & Communication Graphics 22
Adding vertical plane Click on Insert/ Reference Geometry/Plane Select three mid points on the ridge board as shown Mirror Select Insert/Mirror Components. Select the plane created as the mirror plane. Select the various parts under components to mirror. Tick the box beside each component as shown Tick the box to create mates to new components. Make sure all the mates are have been maintained in the mirrored view. Recreate the mates in the normal way if necessary. Design & Communication Graphics 23
Adding other Rafters. An alternative to bringing in other rafters from the part file and mating each is to use Linear Pattern in the Insert menu. Select the direction as shown Set the spacing of the rafters to 400mm. Select the number to 8. Select the rafters under components to be copied as shown. Accept. Design & Communication Graphics 24
Adding other Galvanized Straps Use Linear Pattern as before Select the direction Set the spacing to 900mm. Set the number as 4 Select the strap shown and the one on the right side to pattern Insert Ceiling Joists Select Insert Component. Click Browse and open Ceiling Joist. Drag it into the drawing as shown. Insert Mates Select Mate and mate the underside of the ceiling joist with the top of the wallplate. Click OK to accept Mate the side of the rafter with the side of the ceiling joist Click OK to accept.. Design & Communication Graphics 25
Finally to fix the ceiling joist in position and have it centered between wall plates, mate the midpoint of the ceiling joist with Plane 1 already created. Select coincident mate here. Click OK to accept Select OK again to exit the property manager Adding other Ceiling Joists Using Linear pattern as before add the other ceiling joists Inserting Hangers Select Insert Component, Browse Select Hanger from the file and drag it into the drawing. Insert Mates Select Mate and mate the edge of the hanger with the side of the purlin shown. Design & Communication Graphics 26
Accept. Mate the side of the hanger with the side of the Ceiling joist Accept. Mate the top edge of the hanger with the top edge of the rafter. Accept. Select OK again to exit the property manager. Insert Binder Select Insert Component, Browse and select Binder. Move it into position as shown Insert Mates Select Mate and mate the bottom edge of the binder with the top of the ceiling joists Accept. Design & Communication Graphics 27
Mate the side of the binder with the edge of the hanger. Accept. Finally mate the side of the rafter with the end of the binder Accept. Select OK again to exit the property manager. Mirror Components Select Insert/Mirror Components as before. Select Plane 1 about which to mirror Select the hanger and binder under components to mirror as shown. Tick the boxes as before. Accept. Create the mates in the mirrored parts where needed. Design & Communication Graphics 28
Adding the other Binders Select Insert/Component Pattern/Linear Pattern as before. Accept Insert Soffit Select Insert Component and Browse. Select Soffit and open. Insert Mates Select Mate and mate the top of the soffit with the underside of the rafter. Accept. Mate the side of the rafter with the end of the soffit. Accept Mate the end of the rafter with the edge of the soffit shown. Accept. Select OK again to exit the property manager Design & Communication Graphics 29
Inserting the Fascia Select Insert Component and Browse. Select the Fascia Board from the file and drag it close to its final location. Insert Mates Select Mate and mate the end of the rafter with the inside of the fascia board. Accept. Mate the bottom edge of the fascia with the bottom of the soffit set the distance of 15mm below as shown. Accept. Finally mate the end of the fascia with the end of the soffit. Accept. Click OK again to exit property manager. Design & Communication Graphics 30
Mirror components Mirror the fascia and soffit to the right side as before. LESSON COMPLETE! Design & Communication Graphics 31
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