1811.2.3 Followers.
BC § 1811.2.3
Followers shall not be used unless permitted in writing by the engineer responsible for the driving operation of the deep foundation. The required driving resistance shall account for the losses of driving energy transmitted to the deep foundation because of the follower. The follower shall be a single length section, be provided with a socket or hood carefully fitted to the top of the deep foundation to minimize loss of energy and to prevent damage to the deep foundation, and have sufficient rigidity to prevent "whip" during driving.
