Sparks v. Consolidated Aluminum Co.

679 S.W.2d 348, 1984 Mo. App. LEXIS 4090
CourtMissouri Court of Appeals
DecidedAugust 21, 1984
Docket47087
StatusPublished
Cited by30 cases

This text of 679 S.W.2d 348 (Sparks v. Consolidated Aluminum Co.) is published on Counsel Stack Legal Research, covering Missouri Court of Appeals primary law. Counsel Stack provides free access to over 12 million legal documents including statutes, case law, regulations, and constitutions.

Bluebook
Sparks v. Consolidated Aluminum Co., 679 S.W.2d 348, 1984 Mo. App. LEXIS 4090 (Mo. Ct. App. 1984).

Opinion

GAERTNER, Presiding Judge.

A jury verdict for plaintiff in the amount of $300,000 in this action based upon strict liability in tort was reduced by a trial court remittitur to $200,000. Both plaintiff and defendant appeal. We affirm.

DEFENDANT’S APPEAL

Defendant contends 1) plaintiff failed to make a submissible case in that the opinion testimony of plaintiff’s expert witness was without foundation and therefore plaintiff failed to prove the product was defective, 2) the verdict was so excessive as to indicate bias and prejudice, 3) the trial court erred in permitting evidence of prior claims made against defendant, 4) the trial court erred by permitting jurors to feel the product many years after the accident, and 5) the evidence failed to support an instruction based upon defective manufacturing. Points one and five both relate to the sufficiency of the evidence and will be considered together. Our review is limited to a consideration of the evidence in the light most favorable to the plaintiff together with all reasonable inferences to *351 be drawn therefrom. Garrett v. Joseph Schlitz Brewing Co., 631 S.W.2d 652, 654 (Mo.App.1982). We are required to accept plaintiffs evidence as true and to disregard defendant’s evidence except in so far as it may aid plaintiff’s case. Braun v. General Motors Corp., 579 S.W.2d 766, 769 (Mo. App.1979).

Plaintiff testified that he was injured when using an extension ladder manufactured by defendant to paint his house. He placed the serrated polyethylene feet of the ladder four to four and one-half feet away from the side of the house on a clear, dry asphalt driveway. The top of the ladder rested against a windowsill twelve feet above ground. He climbed almost to the top of the ladder, high enough to reach the window. In this position, he testified, the feet of the ladder started to slip out from under him. He fell sustaining serious injuries.

The thrust of defendant’s attack upon the submissibility of plaintiff's case is directed at the testimony of plaintiff’s expert witness, John C. Georgian, a professor of mechanical engineering at Washington University. He expressed his opinion that the ladder was defectively designed because the hard plastic on the feet of the ladder had a low coefficient of friction. Defendant attacks this opinion as being without foundation in that Professor Georgian did not know the composition of the plastic and made no tests by which to determine the coefficient of friction but merely assumed it to be .3.

A cursory glance at one or two isolated answers of the witness would seem to lend credence to defendant’s argument. However, when considering his testimony in its entirety, as we must [Shelton v. Bruner, 449 S.W.2d 673, 677 (Mo.App. 1969) ], it becomes evident that the professor’s opinion was based not upon assumptions but upon mathematical calculations. He had been furnished plaintiff’s deposition testimony detailing the placement of the ladder and plaintiff’s position thereon when it began to slip. By taking measurements at the scene of the accident he was able to diagram the position of the ladder against the house and to measure the angle between the base of the ladder and the asphalt driveway. Knowing plaintiff’s weight and his height on the ladder, he could determine the force applied to this angle. Applying these known factors to a formula, a static force analysis, he calculated the unknown factor, the coefficient of friction. 1 Thus, he determined that with the measured angle of 65.7 degrees and plaintiff’s weight of 170 pounds near the top of the ladder extended to 158 inches, by “calculating backwards, when it slipped the coefficient of friction must have been about .375.” Similar calculations were made varying the angle and the height of the plaintiff on the ladder. Thus, Professor Georgian testified that with a .3 coefficient of friction, slippage would occur at a 72 degree angle. When asked how he determined the .3 coefficient, he replied “I just took it out of my head, made that assumption.” This is the response seized upon by defendant as the principle basis of its attack upon the foundation of Professor Georgian’s opinion. But when viewed in the light of his entire testimony, the answer may obviously be interpreted as describing a mental calculation rather than an unfounded assumption. Constrained as we are to view the evidence and the reasonable inferences to be drawn therefrom in the light most supportive of the verdict, and to resolve inconsistencies in favor of the prevailing party, Lauber v. Buck, 615 S.W.2d 89, 91 (Mo.App.1981), we consider Professor Georgian’s answer to be a rather imprecise means of stating that he determined by mathematical calculation the one unknown factor necessarily derived from the known factors assumed in his hypothesis. That he reached his conclusion by calculation rather than by actual testing similar to that performed by defendant’s experts in *352 reaching a different conclusion is a distinction to be evaluated by the fact-finders in assessing the weight of the evidence. It does not affect its admissibility nor, if believed by the jury, its substantiality. Defendant’s challenges to the submissibility of plaintiffs case, the verdict directing instruction and to the opinion testimony of Professor Georgian are denied.

The ladder was marked as an exhibit and introduced in evidence. Plaintiff’s attorney requested permission for the jurors to run their fingers over the plastic feet of the ladder. Defendant’s attorney objected on the grounds that the passage of five years since the accident rendered the present condition of the plastic irrelevant. The overruling of this objection is assigned as error. We disagree. Examination of exhibits introduced in evidence is within the sound discretion of the trial court. Wilkens v. Cash Register Service Co., 518 S.W.2d 736, 747 (Mo.App.1975); Yeager v. Wittels, 517 S.W.2d 457, 466 (Mo.App.1974), There was no evidence that the ladder, which was bent during plaintiff’s fall, was used after that time, or that its condition had changed. We find no abuse of discretion in permitting jurors to feel the serrations, or teeth, molded into the plastic in order to increase its resistance to slippage.

Defendant also claims error in the admission of evidence regarding other claims made against defendant of injuries by reason of slipping ladders. In response to an interrogatory defendant had disclosed seven claims made against it involving allegedly defective ladders. The time and circumstances of each claim were not requested nor disclosed. In a deposition of defendant’s engineering manager, Mr. Cooke, plaintiff’s attorney had questioned him relative to such claims. Before trial, by motion in limine, defendant’s attorney sought an order excluding this evidence.

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679 S.W.2d 348, 1984 Mo. App. LEXIS 4090, Counsel Stack Legal Research, https://law.counselstack.com/opinion/sparks-v-consolidated-aluminum-co-moctapp-1984.