Chimneys

Video: https://youtu.be/EewXVPRJRGU

Instructions from Video:

In this tooltip we will illustrate how to add chimneys into your model. We will create the walls, flue and the chimney crown.

Looking at the sample model in 2D we have a fireplace in the great room. We will add a chimney to the outside. Using the zoom window tool, hold down the left mouse button to draw a box around the area that you want to magnify on your screen.

First, we will insert the flue. Select Insert>Columns or select the Column icon. The column command is a versatile tool, it can be a structural or decorative column, or it can be used for any vertical element that you need like a flue. I will right-click in my column catalog and select Add Element.

The Define Elements dialog box appears. Columns can be either a parametric column or a custom block you can import. Select Columns to create a parametric column and click OK.

The Columns dialog box appears. At the top of the dialog box type the name 8” Flue. Beneath that there are many different column shapes available and the Circular hollow style is perfect for the flue. The size parameters are below. The flue needs to be 8” for our fireplace and with the overall height for our 2-storey building I will need it to be 22’ tall. There are other settings regarding the appearance and quantity information that we can also set but for brevity of this lesson we will assume they are perfect for this flue. Once the flue is described, click OK to add the 8” Flue into the catalog. It will be there for all your future projects.

Select the 8” Flue and left-click to place it in the model. I am going to place it to the outside of the fireplace.

Select Insert>Walls>Walls, to draw walls for the 3’ x3’ chimney. From the default catalog select the 6” Concrete Block with Brick Veneer wall. Left-click to start drawing the wall, type 3’, and hit enter while pulling the cursor in the direction for the first wall. Now pull in a direction 90 degrees from the first and type 3’ in the commander area and again hit enter to now insert a second 3’ wall. Move the cursor back towards the house and click to attach it. Right-click and select Finish.

These walls will insert at a height according to the building location information. In this project the ground floor walls are 8’1-1/8” tall. The walls need to be 20’ tall to sore past the roof. Select one of the walls and then holding down the shift key, select the other two. With all 3 selected right-click and select Properties.

The Walls dialog box appears, click the Top & Bottom tab at the top of the dialog box. Set the walls to Level and change the height of the walls to be  20’ and then click OK.

So now there is a flue and chimney but looking at the chimney from a camera that is sitting up on the roof, we can see that there is not a wall on the back of the chimney. We only drew the 3 and the existing exterior wall sits underside of the roof, not our new height of 20’. That wall is also not the materials needed for a chimney. Since walls cannot sit on top of walls on the same location and this needs to be a brick wall, a change must occur. A new location for the chimney wall will solve the issue.

Select Settings>Building Locations. With the cursor on the second floor location, select Add Location.

In the dialog box that appears, select Calculate from the existing location, the second floor, and click OK.

In the Location Calculator dialog box give the Location Name: Chimney. Give the wall a height of 3’. We can leave all the information the same. Click OK. Now we have the location ready to create the back wall of the chimney.

On the ground floor location, select the chimney wall that is parallel to the house. Right-click and select Duplicate to Location. Select the new Chimney location and click OK. This will send a copy of that wall up to the location.

In the lower right corner of the screen, change the current location to the Chimney location. You will notice that this wall only has a single line around it. Since it is by itself and not enclosing a room it is considered an interior wall, but we can add back the brick finish. Select the wall, right-click and select Properties.

We need to set the exterior side to the exterior.  If you scroll down the list of properties for the wall, there is an option to Force Surface to be Exterior for both the left and the right side of the wall. We need the right side to be exterior, check it. This wall was also a full 20’ tall, selecting on the Top and Bottom tab I set the wall to 3’ and then click OK.

Next, move the wall into the correct position. In Envisioneer you can see the outline of the walls on the other locations, and therefore move the wall into the right spot directly over the walls beneath it.

Now we need to proceed into making the chimney crown. The crown needs to overhang the walls so temporary construction lines can be used to mark the first point of insertion. Select Tools>Layout>Line.

Left-click on the lower-left corner of the chimney to start the line and pull from the chimney, type 4” and hit enter so it draws a 4” line. Now pull away from that point and again type 4” and hit enter. Right-click and select Finish.

The end of that last line is where we will start drawing the chimney crown. Select Insert>Floors>Floor by Picking Points. In the catalog select the 4” Concrete Floor, which will be perfect.

Moving the cursor onto the drawing screen and left-click on the end of the construction line to start inserting the concrete. Move the cursor upwards and type 5’ and hit enter, the first 5’ edge is inserted. Move the cursor towards the chimney and type 5’ again and hit enter, the next side is formed. Lastly move the cursor down and type 5’ and hit enter since it will automatically return to the start point, right-click and select Finish.

The crown is formed, now we just need it at the right height. Since it is a floor it will sit at the base of our walls. The wall on this location is 3’ and the floor is 4” thick. We, therefore, must elevate this chimney crown up 3’4” so it sits on top of the wall and not at the base. Select the surface, right-click and select elevate. Type 3’4 and click Ok.

The chimney, flue, and chimney crown are done. We can see it in a variety of views. I hope that makes your work easier.