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Continue from the previous lesson, or open the file ch03_AEC_construct02.max. Currently we have a very simple structure with four walls sitting on a
concrete pad. The walls are created with AEC wall objects. These are very special type of object that work directly with the doors and window objects
that are available within 3ds Max. In this exercise we’re going to add a door to the front wall of the house. In the command panel click on the create
tab. Make sure the geometry option is selected. From the geometry drop down list choose the doors option. We’re going to use a standard pivot
door as the front door of our building. Click the pivot option in the object type rollout. In the viewport place your cursor towards the middle of the front of
the building. And since we’re snapping to the grid our door will be created on the slab. First we need to click and drag to place the door and set the
width. On the front of the slab, just off to the right hand side of the center, click to locate the origin, then drag the door to the left to set the width of the
door and release the mouse button. Next, move the cursor back and to the left just slightly, then left click the mouse button. This will set the depth of the
door. Drag up with a mouse and you’ll see the door start rising from the floor, this is setting the height of the door. Left click, to set the door height. Don't
worry about setting a specific height, width, and depth for the door we’re going to fix that in the modified panel. Now switch over to the modify
panel by clicking on the modify tab. In the pivot door parameters rollout, change the height value to 7 feet then press enter. Change the width value to a
value of 3 feet then press enter. Then set the depth value to a value of 8 inches. This makes the door 2 inches deeper than the wall and will give us the
molding that we want around the door. So enter a value of 8 inches and press enter. Let's open the door a little bit so we can see what just happened
in the walls. In the door parameters rollout set the open value to a value of 45°and press enter. When we open the door you’ll notice that we can see right
through the door. That’s because the wall object understands the placement of the door object and cuts out the wall dynamically to accommodate the
door. One problem you’ll notice is that the door opens out. In order to correct this check the flip swing check box. The door will now open to the
inside of the building. If we look further up the parameters of the pivot door, you’ll notice that there is an area to edit the door frame. You can create a
door frame or not create a door frame based on this check box. And you can adjust to the width, depth and door offset. Scroll the panel so that we
can see the leaf parameters rollout. The leaf parameters allow you edit the area around the glass panels in the door. For instance, change the
bottom rail value to a value of 4 inches, and then press enter and you can see that the bottom leaf of the door is now 4 inches high instead of 1 foot. You
can also specify what types of panels are used for the interior panels of the door. If you click on the “none” option, the door will be a flat door with no
glass panels. Of course the panels don’t have to be glass they can be any material you want. If you click on the beveled option the panels will have beveled
edges based on the bevel parameters that you set in this section. Let’s go ahead and change the number of panels so that we have more than one,
this will make the door look a little more traditional. In the leaf parameters rollout, set the number of panels horizontal to a value of two by clicking on
the up arrow of the parameters spinner. Then, set the number of vertical panels, by setting the number panel’s vertical value to four, and then press enter.
To adjust the spacing between the panel’s change the value of the muntin parameter to 1.0 and then press enter. Now that we’ve completed installing
our door, click on the application button, from the application menu click Save As, in the save file as dialog click the increment on save button to save
this file as a new file with an incremental file name. If you’re asked to overwrite a file, go ahead and overwrite it.