A spring-biased clamp includes a threaded rod; a load assembly mounted to a first end of the rod; a stop disk mounted to the second end; and a jaw assembly near the second end. The jaw assembly includes opposing jaws hinged together. The jaw assembly travels on the threaded rod. A method of suspending a load includes raising the clamp towards a ceiling structure; applying force to press the first and second jaws against an attachment point, spreading them; advancing the jaws until the torsion spring draws them together; and rotating the threaded rod until the stop disk contacts the attachment point. A weighted load is then attached to the load assembly. Loads can be quickly and safely secured with the clamp to the ceiling structure from the ground without elevating the installer.