1. master and low servant: ísiioflalbyy inde-" Servant. feUow The plaintiff was an experienced bridge worker, and, as such, was an employee of the defendant at the time of tlie accident in question. His particular work the time of the accident was “tightening-up the cord bolts.” This work ordinarily required him to take a position on the cap of the bridge. From this position, he reached down to the bolts, and with' a wrench tightened the burrs thereon. In this manner, the plaintiff had done his work and had proceeded from the south end of the bridge and tightened every bolt up to the last holt at the north end. In the tightening of the last bolt, he encountered some inconvenience, and conceived the ‘ idea that he could tighten it more conveniently from' the under side. This idea was perhaps stimulated to some extent by the fact that there was a plank in position on the under side which would furnish him standing room and from which he could reach the bolt. It was from this plank that he fell, and suffered therefrom a sprained ankle. The circumstances attending the placing of this plank in position and the use thereof by the plaintiff are an important consideration.

The regular foreman was not present with the crew on the day of the accident. Casey, another workman, acted as vice-foreman. He also engaged in his regular work as a fellow workman with the other members of the crew. Early in the day, for his own temporary use, Casey had procured this plank and put it in position. This position was that one end thereof was allowed to rest upon the top of the bank, and the other end rested upon the timbers of the bridge. These timbers consisted of an upright piling and a diagonal brace called the sway brace. The upright piling and the diagonal brace formed an angle, and the further end of this plank rested in such angle. The plank was 12 inches wide and 3 inches thick. It was not nailed. Casey *225used it for a brief time until he had finished his work thereon. The plaintiff was present, and saw Casey put the plank in position and saw him use it. It was two hours thereafter that the plaintiff got upon the plank himself. He worked thereon for several minutes. In his efforts at tightening the bolt, his wrench slipped. The plank tilted on one edge, and the plaintiff went to the ground, 5 or 6 feet below.

The contention for the plaintiff is that the plank was in the nature of a scaffolding, and that it was not a safe place to work; that he was entitled to warning of the danger thereof and received none; that he was expressly directed by Casey to go upon such plank for the purpose of his work. It is contended that it was the duty of the defendant or its vice-principal to have made such plank more secure, either by the use of ropes or hangers or toenailing. The plank was not put there for the plaintiff’s use. He knew that. He saw it put there by Casey, and knew that it was so put only for Casey’s temporary use for his own work. He knew that it was not protected by hangers or ropes or nails. The act of Casey in putting it there was not the act of a principal or a vice-principal. Assuming that Casey was a vice-principal for some purposes, he was also a fellow workman. He used the plank for doing the work of a fellow workman only. There was no actual negligence, then, to be found in the manner in which the plank was put in position. It is urged, however, that even this did not excuse him from the duty to warn the plaintiff of. the danger of using the plank. The ■ duty to warn ordinarily pertains to unknown and nonobvious dangers, and has its most frequent application in dealing with inexperienced persons. In this case, there was nothing known or obvious to Casey that was not as well known and obvious to the plaintiff. Casey could have told him nothing about the plank that he did not already know.

*2262' savant ;A!piace £oíasT°flfrec-eaí" tions to use. Passing this point, however, the enaphasis the appeal is laid upon the proposition that the plaintiff was directed by Casey to uge par-j-jcu¡ar pi.ank; in this position as a scaffold. This contention is based upon the following testimony by the plaintiff:

“A. I asked Mr. Casey if he was using the. scaffold— if he was through with the scaffold — and he said, ‘Yes, use it.'’ * * * A. I asked him if he was through with the scaffold, and he said, ‘Yes, use it.’ ”

Can it be said that the foregoing amounted to a direction from Casey that the plaintiff use this plank as a scaffold? At the time of this conversation between the plaintiff and Casey, Casey was at the further end of the bridge. He had not been upon the plank for some time It is not claimed that the plaintiff advised Casey that he wanted to use the plank as a scaffold. For the purpose of tightening bolts, his place was upon the top of the bridge. He had never before tightened a cord bolt from the under side nor used a scaffold for that purpose. He did not advise Casey that he wished to make such experiment then. It is urged that the question which he put to Casey implied plaintiff’s purpose to go upon the plank himself. We think no such implication could fairly arise from the question put. If the plaintiff merely wished to use the plank for a few moments, there was no apparent occasion for asking Casey any question at all. Plaintiff knew that Casey was not using the plank, and knew that he was at the other end of the bridge. He did not, of course, know that Casey was through with the plank. That part of the .question, therefore, would have been appropriate if he had wanted to remove the plank from its position. Such purpose was the only fair implication of his question. In the light of the real purpose of the plaintiff, the question as testified to by him was quite incongruous. It had no apparent purpose to *227serve. Taking it, however, as he put it, and the answer of Casey thereto, we can see in it nothing more than a permission by Casey to the plaintiff to “use” the plank. If the implication of the question and answer was any broader than that] it was that he had permission to remove the plank for such use as he wished to make of it. The language of Casey cannot fairly be construed as a direction or command to the plaintiff to go upon such plank in its then position.

s' smwaot twarnob!iousTaangers‘ The situation, therefore, sums up briefly as follows: The plank was put in position by Casey for his own temporary use, and without any intent that it should be used by the plaintiff, and the plaintiff knew it. In putting such plank in position for his own use, he was not acting as a vice-principal.. The danger involved in the use of the plank was as obvious to the plaintiff as it was to Casey, and there was no duty to warn. The plaintiff’s appropriate place for his work was upon the cap of the bridge. Casey did not command or direct or request him to go upon the plank in question. We think, therefore, that the evidence wholly fails to show negligence on the part of the defendant or its vice-principal, and that the trial court properly directed the verdict.

The judgment below is accordingly — Affirmed.