This story covers how to lay out a room in quadrants for a resilient-tile floor.
In most situations, laying out the room and setting resilient tile in quadrants works best. Starting in the center of the room allows the focal point of the tile pattern to correspond to the focal point of the floor area. More importantly, laying out the installation in quadrants results in edge tiles that are the same width on all four sides. The quadrant method, however, requires some experimentation. To get evenly spaced edge tiles you'll have to lay a row of tiles on one chalk line axis at a time and push the row back and forth until the spaces at the ends are the same depth.
Bear in mind that edges look better if they are at least a half-tile wide. If your first trials end up with narrow slivers, take a tile out of the row and recenter the row on the layout line. Repeat the procedure for the other axis. Because carpentry is an inexact science, almost no room is perfectly square. In older homes especially you may find the out-of-square condition so severe that it results in one wall of radically tapered tiles. Try to place your layout so tapered tiles fall in the least conspicuous part of the room, such as on a wall opposite a doorway, in indirect light, or hidden underneath furniture.
2 hours for an 8x10-foot area, not counting preparation
Tape measure, chalk line, carpenter's pencil
Remove furniture, appliances, and old flooring.
Dry-lay a row of tiles along both axes from wall to wall. Measure the space for the tiles that will abut the wall. Adjust the line of tiles until the edge tiles are the same width and at least a half-tile wide. Repeat the adjustment on the other axis until you have even borders.