Only two questions are posed by this appeal: (1) Was the evidence against the corporate defendant sufficient to justify an inference that it was guilty of actionable negligence or did it warrant a judgment for such defendant verddcto non obstante*! (2) Was the evidence against the other defendants so devoid of substance as to warrant the granting of their motions for a nonsuit?
Appellant sued for damages allegedly resulting from bodily injuries suffered by him while standing on a bleacher which had been designed by respondents Mackintosh and Mackintosh, engineers, employed by respondent Beatty Safway Scaffold Company, a corporation, herein referred to as “Beatty.” The general contractor for constructing a gymnasium building at the Belvedere Junior High School was Arthur Pinner, Jr., whose contract included the installation of the automatically operated bleachers. The installation of the bleachers began January 28, 1952. The work had been completed on April 30 when the engineers for the board of education were present and witnessed the equipment in place, and in operation. No corrections were suggested with reference to the operation or to the bleacher covers.
At the close of plaintiff’s case, motions for nonsuits by all defendants were granted except that of Beatty. A verdict *877 against it for $57,000 was set aside and a judgment notwithstanding the verdict was entered in favor of Beatty and against Spencer. Appeals were taken by plaintiff from that judgment, and also from the judgments of nonsuit granted the other defendants.
Appellant was 57 years of age. For many years prior to his accident, he had been the head physical education instructor at the Belvedere Junior High School in the city of Los Angeles. On December 16, 1952, he was in charge of the gymnasium, the bleachers and other installations. As such instructor and director, it was his duty to operate the folding bleacher devices and the retractable basketball backstops in the gymnasium. The backstops were raised and lowered by cranks inserted in winch boxes attached to the walls above the bleachers. While he was about to crank, or was in the act of cranking a backstop into place, a bleacher lid (cover) fell and struck him on the chest.
The installation of the bleachers had been completed April 30, 1952, but they were not used regularly until September. They were installed by the corporate defendant Beatty, a subcontractor under defendant Pinner. The bleachers were in six consecutive sections on the west wall of the gymnasium, about 1 inch apart and 1 inch from the wall, numbered 1 to 6 from north to south. Each section is operated separately and was so constructed as to be extended outward from the wall when the planks automatically came into place, thereby affording seating facilities for spectators. It is supported by standards on wheels. It is to be folded, or retracted, when not in use. It is extended or opened by manually pushing the wheel-supported frame forward from the wall. Then the front cover lies flat on the gymnasium floor, while the bleacher seats rest upon the extended frame; at the same time, the “lid” or top-cover is raised to a vertical position, parallel with the wall. When it is retracted, the front cover is placed so as to conceal the bleacher frame and seats from view, while the lid normally descends from its vertical position near the wall behind the retracted bleacher to become the top of a box, shutting the bleacher wholly from view. The cover or lid is made of half-inch plywood. The top or lid of the box created by closing or retracting the bleacher is of sufficient strength to prevent balls or other equipment from getting into the folded bleachers, but it is not strong enough to support heavy objects or the weight of a man. When the *878 lid is up, it stands in delicate balance, with its upper edge about 4 inches from the wall.
The Automatic Operation
This automaton is operated by the force of gravity, slightly aided by the attendant. A section has three sets of pulleys operating antagonistically. One end of the cable is securely attached to the lid; it proceeds through a pulley attached to the wall above the lid; thence it proceeds down the wall to a point below the lid through an opposing pulley; thence to a screw in the bleacher frame. When the bleacher is retracted, the cable slackens, whereupon the near-vertical lid falls into its place, covering the enclosed bleacher. That takes the slack from the cable which becomes taut again.
When the engineers for the board of education on April 30, 1952, observed the bleachers in operation, they found no fault in their construction or operation. For views of'a section extended 1 and a section retracted, 2 see the reproductions of photographs in evidence.
A New Factor Enters
The bleachers having been accepted, a new device was found essential to the gymnasium. Basketball backstops were installed. They also were put on the west side of the gymnasium. They were attached to the wall and the ceiling to be raised and lowered as required. The mechanism for operating the backstop is controlled by winch devices fastened to the wall above the bleachers and in such positions that they are above the top of the lid when it is in vertical position. The installation of the backstops and winches appears to have been an afterthought of the school board for there is no evidence that Beatty had an inkling of the plan subsequently to install the additional equipment.
How It Happened
Appellant had, prior to December 16, 1952, observed the successful operation of the bleachers. They were throughout the autumn operated successfully. On the last mentioned date he went to the top of section 6 in order to crank a winch box located above the vertical lid over section 5. While doing so, the lid of that section suddenly fell, struck appellant, knocked him off the bleachers to the floor and caused him to
*879
*880 suffer brain concussion, retrograde amnesia, permanent paralysis downward from the eighth dorsal vertebra.
Was Bleacher Negligently Constructed?
The expert proof shows definitely that the basic design of the bleacher was proper and appellant’s counsel admitted that no part of it was improperly constructed. It appears, however, that the execution of the details was so far substandard that the operation of the pulley on bleacher 5 froze and became ineffective at the time of appellant’s fall. The pulley that was fastened to the wall behind the seats, halfway to the floor, was too small for the cable. After the accident it was found to be immobilized. Also, the cable at that point was pinched. While there was no evidence that the cable broke, the immobility caused by the failure of the cable readily to pass through the pulley was sufficient to cause the lid to remain up when it should have come down. Other criticisms of the experts were such things as tended to create friction, thereby causing a diminution in the ease with which the cable proceeded to respond to the forces operating upon it. The immobility of the cable left the lid in its vertical position. But conceding the freezing of the cable to have been due to the negligence of Beatty, mere proof of negligence on the part of a defendant does not complete the circuit of proof of his liability. To make him legally liable, the negligence of the defendant must be fastened to the injury. If it is not, a judgment against him is not justified.
(Puckhaber
v.
Southern Pac. Co.,
The Lid or Cover
Hade of plywood, the cover was 16 feet long, four feet wide, and weighed 120 pounds. It suddenly fell, struck appellant and precipitated him to the floor. But there is no evidence of what happened just prior to the lid’s falling. Since he suffered amnesia, he is presumed to have been acting with due care for his safety.
(Smellie
v.
Southern Pac. Co.,
When the plyboard cover stands almost vertical, it is held so by the cable while the bleacher is extended which in turn is held taut by the screws in the wall. Unless those screws came out, the cover could not fall. It is possible that appellant lost his balance as he leaned from the top seat on section 6 to crank the winch above section 5, and in falling grabbed the cover and went down with it. If he did that, or anything else to cause him to fall, although not negligence, such possibility or some act of his caused him to fall and in his falling to pull the cover down and that fall and his pulling the cover with him or some other act of his was the sole proximate cause of the tragedy, unless the doctrine of res ipsa loquitur is applicable.
Certainly, the accident can be traced to no negligence of the defendants or any of them. Before negligence can be actionable, it must be the proximate cause of the injury. (19 Cal.Jur. 557.) Before negligence is actionable, a causal connection must be shown to have proceeded in unbroken course from the so-called negligent act to the injury.
*882
(Lawrence
v.
Southern Pac. Co.,
As proof that negligence of respondents did not cause appellant to fall, it is recalled that he had for eight months been familiar with the method of operating the bleacher, and had been the chief actor in its operation. He had never discovered anything out of order. On the contrary, he had abused the plyboard by standing on the lid which was not designed to support a man’s weight. Such practices may have caused a warping of the plyboard and thus have added to the friction of the cable and caused it to be immobilized.
Res ipsa loquitur does not apply. It does not appear that the injury was not caused by a voluntary act of appellant.
(Ybarra
v.
Spangard,
The order granting Beatty’s motion for judgment notwithstanding the verdict was properly granted.
Orders of Nonsuit Were Proper
In view of the foregoing discussion, it appears that the order for nonsuit on the motions of Charles Mackintosh and Mackintosh and Mackintosh were wholly justified. No negligent act on the part of either was proved. These engineers designed a safe and efficient automatically controlled bleacher. Its failure to operate efficiently could not have been due to the *884 negligence of either and if it failed to perform at a critical moment, such failure was not the cause of the injury.
Judgment and orders affirmed.
Pox, J., and Ashburn, J., concurred.
A petition for a rehearing was denied June 27, 1956, and appellant’s petition for a hearing by the Supreme Court was denied July 24, 1956.
