Autodesk Revit is an excellent building information modeling (BIM) application for architects and engineers. The program allows the designer to build a three-dimensional model of a structure in the computer and then create orthographic drawings, perspectives and isometric drawings of the model. The drawing features of Revit dramatically decrease the time it takes to document a structure, and the application is relatively intuitive. However, some features of Revit are not as easy to use. For example, vertical circulation, such as ramps, is difficult to master on the program. But, the ramp modeler can be mastered with practice and understanding of Revit’s interface.
Things You'll Need
- Autodesk Revit
Lay out the floor plan of the proposed structure. Provide interior partitions and corridors. Create a new level at the elevation of the top of the proposed ramp. A new level can be drawn in an elevation window on the "Project Browser" by selecting the "Level" button in the "Datum" menu on the "Home" ribbon. Complete the new level’s floor plan. Be sure to have corridors on the two levels that overlap in plan; this overlapping area will be where the ramp is inserted.
Select the "Ramp" button in the "Build" menu on the "Home" ribbon. The ramp can be sketched on either of the two levels with floor plans. Revit defaults to drawing by ramp run, but you can draw the side boundaries of the ramp and insert risers and slopes manually. It is easier to convert the default ramp run than drawing the ramp manually, so it is suggested you use the default method. Before placing the first ramp, select "Ramp Properties" in the "Edit Sketch" menu. A window will open, then select, from the drop-down menu, the "Top Level" and "Bottom Level" constraints. These constraints will define the level of the top and bottom of the ramp. Click OK.
Draw the run of the ramp. As a default, Revit will draw a handicapped-accessible ramp with a 1-inch-rise-to-12-inch-run slope with a landing after every 30 inches of rise (30 feet of run). If more than one leg of ramp is necessary, draw the other legs; Revit will create the landings automatically. When the computer states no more ramp run is necessary, click "Finish Ramp" or adjust the boundaries and slopes of the ramp. The blue lines define the slope, green lines the boundaries, and the black lines the change in slope and circulation direction. When the footprint of the ramp has been completed, click "Finish Ramp."
Draw the floor plates using the "Floor" button. Allow an opening in the upper floor plan to accept the drawn ramp and head height clearance. Drawn floors can be edited by selecting the floor footprints in plan view and selecting "Edit Sketch." A rectangle drawn inside another rectangle is a floor plate opening in "Floor Sketch" mode. The location of the floor and opening can be adjusted by moving the lines of the floor footprint.
- Photo Credit ramp image by max blain from Fotolia.com
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