1. (a) Top rails. Pipe railings shall be not less than 1 1/4 inches inside diameter if of iron and not less than 1 1/2 inches outside diameter if of brass tubing. Reference should be made to Plate 1 of the Appendix.
2. (b) Midrails. The middle railing shall be of a diameter not less than the minimum requirement for the top railing.
3. (c) Posts. The posts or uprights for pipe railings shall be of a diameter not less than the minimum requirement for the top railing. Specially formed metal or cast posts other than pipe are acceptable if they are equal in strength to a pipe post of the above diameter. Reference should be made to Plate 5 of the Appendix. Posts which are an integral part of the under or over structure are acceptable if they meet the spacing and strength requirements specified in this section.
4. (d) Sockets. Removable pipe railings having the posts supported by sockets are acceptable if the sockets are of a depth not less than 1/3 of the height of the railing and if all sockets are lined with pipe of a diameter large enough to permit ease of insertion and withdrawal of the posts without permitting sidesway. Reference should be made to Plate 1-B of the Appendix. When pipe posts are supported by U-bolts fastened in the structural frame, the length of post so supported shall be equal to 1/3 of the height of the railing.
5. (e) Special fastenings. Metal posts or uprights of other types used in connection with pipe railings shall be secured to the floor or structural frame in such manner as to achieve a rigidity equal to the requirements of existing and new post fastenings. Reference should be made to Plate 5-B of the Appendix.

Cross References

This section cited in 34 Pa. Code § 47.235 (relating to wood railings); 34 Pa. Code § 47.234 (relating to metal railings other than pipe); and 34 Pa. Code § 47.235 (relating to wood railings).