One big advantage of this parametric relationship between the wall and the roof is that the overhang can be controlled easily by changing the settings in the properties box and the options bar. The Pick Walls tool justifies and constrains the roofвЂ™s edge to the supporting wall below. See the red arrow to the right in the image below. Primary among these tools is the PickВ Walls tool, which is available when you are in Sketch Mode and you are creating the edges of the roof footprint. Revit gives usВ some great tools for creating and modifying roof overhangs. IвЂ™m assuming the use of wood framing and rafter-type roof construction. In this post, IвЂ™m speaking about residential projects, such as a single-family home. See Reviewing Warning Messages.AВ wall section from my new book, Residential Roof Design using Autodesk Revit You can see the warning using the Review Warnings tool. Revit LT issues a warning if the number is already used but allows you to continue using it. This value must be unique for each roof in a project. This is a read-only value.ДЄ label applied to a roof. If there is no slope-defining line, the parameter is blank and disabled. The parameter initially displays a value if there is a slope-defining line. This property is enabled only when creating a roof by footprint.Д¬hanges the value of the slope-defining line to the specified value, without the need to edit the sketch.

You can set a maximum allowable ridge height using the Max Ridge Height tool. The maximum height of the top of the roof above the base level of the building. This property only affects roofs created by picking walls. To see the effects of this property more clearly, set a value for Plate Offset from Base other than 0. If you choose Truss, the Plate Offset from Base is measured from the outside of the wall. If you choose Rafter, the Plate Offset from Base is measured from the inside of the wall. This property is a switch for the Plate Offset from Base property.

See Creating a Plumb Cut, Two-Cut Plumb, or Two-Cut Square Eave. The length of the lines defining the fascia.Дefines the rafter cut on an eave. This parameter is only enabled for extruded roofs. Raises or lowers the roof from the reference level. The default is the highest level in the project. For example, if you pick the outer edge of the wall during creation of the extrusion, the end point ends the extrusion at some point out from the outer edge of the wall. For example, if you pick the outer edge of the wall during creation of the extrusion, the start point starts the extrusion to some point traveling out from the outer edge of the wall. Height of the cutoff above or below the level specified in Up to Level. Roofs cut in this manner can be combined with another roof to form Dutch Hip, Mansard, or other roof styles. Specifies a level above which all footprint roof geometry will be not shown. This property is enabled only when creating a roof by footprint. Sets the height of the roof above or below the level where it is being sketched. After you draw the roof, you can select it and then modify this property. This property is read-only before creating a roof. If not selected, it means the roof is not part of a room boundary. If selected, it means the roof is part of a room boundary. Sets the level for the footprint or extruded roof. The work plane with which an extruded roof is associated.

Rafter revit