I have been meaning to upload a Sketchup model of the gate I built for friends for a few weeks now and haven’t gotten around to it until tonight. A picture of the gate can be seen above. The gate I built needed to be fairly wide (43″) to fit the space properly. If you would like to build one, you may want or need to change the dimensions. A copy of the model can be downloaded here. To view or edit the file, you will need the most current version of Sketchup, which can be downloaded from http://www.sketchup.com.
If you have any questions, you can leave a comment or send me an email from the About page.
NOTE: There are two elements that are not included in the model: 1) all the mortise and tenon joints in the real gate were pinned with 3/8″ gluing dowels, and 2) the smaller tenons on the bottom board (the ones that don’t go all the way through the stiles on the sides) are shorter than the mortises and have oblong holes for the dowels to pass through to help the board expand and contract without spitting.