The trial court erred in granting the general contractor summary judgment in this suit by a subcontractor’s employee who was injured by a fall from defective scaffolding. Though another subcontractor erected the scaffolding, questions of fact existed as to whether the general contractor had delegated to that subcontractor the duty to maintain the scaffolding in a safe condition even after its primary job of plastering the exterior of the building had been completed. Triable issues also existed as to whether the general contractor retained and exercised authority to maintain the scaffolding in sale condition.