Abstract: An aerial platform apparatus includes a vehicle, an extensible boom mounted on the vehicle for luffing and swinging movement, and a workman's platform carried by the boom. The boom at its outer end carries a support column, which supports a workman's platform and a pin holder. The pipe holder includes a horizontal oscillatable shaft located rearwardly of the platform, and including a pair of forwardly extending arms, each on one side of the platform. The arms are provided at their outer ends, which are generally forwardly of the platform, with material engaging devices, specifically releasable pipe clamps. Preferably, the arms are extensible. A motor controlled by the occupant of the platform oscillates the pipe holder shaft, and other similarly controlled motors actuate the pipe clamps and extend and retract the arms.