Correction in Ladder Test Procedure
George H. Layden, chief engineer of Peter Pirsch and Sons Co., and author of the article “How Safe Is a Ladder?” originally presented at the Fire Department Instructors Conference in Memphis and printed in the May issue of FIRE ENGINEERING, has informed the editors that the Technical Committee of the Fire Apparatus Manufacturers Association and the Fire Equipment Committee of the National Fire Protection Association have revised the test procedure to determine
the structural safety of a 12 or 14-foot ladder rung.
It has been determined that the difference in weight between 12 and 14-foot ladders could vary the rung thrust loading. The test procedure has been reworked to eliminate the possible error caused by the weight factor. The accompanying diagram should be substituted for that part of Fig. 2 on page 378 of the May issue, which shows the complete ladder test.