(1) You must make sure not to tie or fasten ladder sections together to make longer ladders unless:
(a) The ladder manufacturer endorses this type of use; and
(b) You have hardware fittings specifically designed for this purpose.
(2) You must make sure each section of a multisection ladder, when fully extended and locked in position to be used, overlaps the adjacent section as indicated in Table 2, Minimum Required Overlap for Extension Ladders.