(a) Limited use. (1) Stilts shall be used only for the work of taping joints in wallboard used for wall and ceiling construction, commonly known as "dry wall" construction. The use of stilts for any other purpose is prohibited. (2) Stilts shall be used only by competent persons who have voluntarily agreed to their use. The use of stilts shall not be at the direction of or at the request of, expressed or implied, any employer. Any person who uses stilts in the performance of such taping work shall