There are 4 beams, across the short dimension of the pocket, beams are on 6' centers starting 4' from one end, hollow, 16" deep from ceiling to bottom of beam, beams are 10.75" wide outside dimension, 1x? construction. Can I locate pendent sprinklers in two of these beams and ceiling sprinklers in the center of the three spaces between the 4 beams to properly cover the floor under the high area. The low ceiling area around the pocket is covered with pendent sprinklers. Low area ceiling is 11'-0" AFF, high ceiling is 14'-6" AFF.