Roof Design Drafting – Revit/AutoCAD?

They’ve probably the strangest labels – gable, hip, jerkinheads, clerestory, saw tooth, witch’s caps, butterfly, rainbow, mansard, karahafu, satari and many others. No, they are not really a summary of insect species. They’re the names of different types of roofs. Though the diverse designs have to be handled very carefully for the complexity of theirs, even drafting the standard top is typically recognized as one of the most demanding skills to perfect in architectural design drafting. Both AutoCAD and Revit are well equipped to allow the delivery of these styles roofs in residential layout sketches, however for most people, AutoCAD is edging slightly bit ahead.

Right from Stone Age times, developing a roof over shelter, or our heads, was among life’s biggest goals as well as a recognised man right. The designs came quite a distance from the basic designs of yore. Thus, how will it work and what exactly are the basic designs?

Roofs will be drafted on their own or perhaps they can be made as a result of putting them on a space which has been enclosed by a set or a polyline of walls. Once defined, slope, the dimensions, edges or perhaps faces can be modified. For much more advanced styles, an’ object’ is selected as well as modified till it’s nearly complete. For increased overall flexibility on customising other features and edges, the roof could be changed to foundations, to which a lot of details can be added or perhaps changed, like orientation, perspective, fascia & soffit profiles. These design details may be added in globally.

Some other than the more complicated blades with the fancy labels, essential kinds are gable, hip, shed or even flat. Easy and inexpensive to establish, the sloped gable is probably the most common type worldwide. Due to the slope of theirs, rain and snow aren’t kept and leakage is avoided, contributing to its longevity. The’ hip’ has inclines on 4 sides, helping it anchor the home beneath it. They’re less affected by winds that are strong and could be put into a new home or even to a current house. A’ shed’ functions one sloping plane, that may have solar panels or skylights, increasing the possibility for electrical power efficiency.’ Flats’ are practically entirely horizontal with minimal incline for water drainage, favourable for solar panel systems and cost effective. There will also be combinations of gable, other combinations and hip.

So, how do Revit and AutoCAD fare in the system of top design drafting?


AutoCAD software offers a number of choices for creating and modifying a broad range of styles. In AutoCAD, plans need to be cross checked with ridges and elevations.

Commands in AutoCAD to develop different styles are versatile. They may be transformed individually with changes tall, slope, edges and also the inclusion of dormer windows. An easy outline is able to be pulled as a polyline of a team of walls, which could be changed into a top, to ensure that the draftsman could focus on the outline first & modifications later.

Sloped and flat ones can be made with exactly the same process, with a reduced rise number as well as an overhang of 0″ ready for the dull. Points on the interior of outside walls are selected therefore the tops on the walls form parapets.

The’ Properties’ palette is able to change thickness, overhang and pitch.

AutoCAD’s’ grips’ allow altering in such a manner that 2D objects, like lines, arcs and polylines, is stretched, scaled, rotated, moved, copied or perhaps mirrored. Grips also can alter the edges as well as vertices, ridge areas, fight skipped intersections, change the perspective, run or perhaps rise of slabs allowing it to help generate gables.

Materials will be defined. They may be shown in wireframes as well as working shade views.

Features of top design and style drafting in AutoCAD include:

Tool Properties for an existing one
Changing dimensions
Changing faces and edges
Converting slabs
Selecting material
Selecting display properties
Selecting hatching
Changing location
Attaching hyperlinks, files or perhaps notes


Designing a top in Revit is significantly different from doing this in AutoCAD. Revit is deemed much better for large scale projects and has features that are many. Though the instrument for elevation views as well as plans work, drafting other details and sections can be tough, particularly for traditional homes with sloped, curved, canted, cranked and custom made units. When creating complicated roofs in Revit, it can be better to create them as individual units then join it to another segment with the’ join roof’ application.

Usually, it might not appeal visually, and the edges might not meet exactly where they’re expected to. This has a tendency to occur because Revit tries to produce slopes from the tips. The edges might not match completely, and there are a couple of ways to counter this problem. One of the ways is usually to produce a mass, select mass faces and make a roof. This might be complicated and very long, as being a slope arrow should be utilized to alter slope angle as well as slope direction.

An alternative choice requires shape editing tools. After the collections are pulled, the default 3D perspective is able to enable the adjustment on the form, the level and movement, but in this manner, it can’t be joined to a different roof.

In Revit, a top could be produced from: a construction impact, as an extrusion, with sloped glazing or perhaps from a mass example, nevertheless it can’t cut through windows or doors, although trusses will be connected in the layout.

Creating by footprint involves:

2D closed loop sketches of the perimeter
Selection of walls or perhaps draw lines from the program view
Closed loops for openings
Slope details for sketch lines

Creating by extrusion involves:

An open loop sketch of the profile
Using arcs and lines to sketch the profile within an elevation view
Editing the work plane

Challenges with top design drafting in Revit

When developing a hip with rafter building (for a vaulted ceiling), Revit doesn’t immediately enable a ridge post or any other supporting element to help support the hip intersection.
Specific elements of a style are positioned on the same plan.
It’s harder to edit.
With changes in reference quantities (eg. elevations), many other dimensions have to be modified also.

Comparing the top design drafting capabilities of both Revit and AutoCAD, users think that AutoCAD is simpler to use because it:

Creates and modifies outlines with increased control
Makes it much easier to add options and details
Makes editing easier
Makes documenting and drafting easier

Nevertheless, Revit modelling allows less architecturally or perhaps technically skilled draftsmen to create much more advanced styles, whereas in AutoCAD, the accuracy as well as accuracy wholly is determined by the capability of the draftsman to properly interpret the design. More At blog

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