Aрpellee, Katherine Tuerr, was injured in an elevator accident. She filed a complaint for negligence against appellant, Otis Elevator Company (Otis), which was responsible for maintenance of the elevator, seeking $500,000 in compensatory damages. Mrs. Tuerr’s husband, Alfred Tuerr, joined in the action and sought damages in the amount of $200,000 for loss of consortium. The jury returned a verdict for Mrs. Tuerr in the amount of $650,000 and for *1256 Mr. Tuerr in the amount of $150,000. 1 The trial court denied Otis’ Motion for Judgment Notwithstanding the Verdict (N.O.V.) or Alternatively for New Trial. Otis raises four principal issues on appeal: (1) that the trial court erred in allowing Donald Moyni-han, appellee’s expert witness on elevator maintenance, to testify; (2) that appellee failed to establish negligence or proximate cause; (3) that the issue of future losses was submitted improperly to the jury without an adequate foundation; and (4) that the trial court abused its discretion in denying Otis’ motion for a new trial based on the excessiveness of the verdict and in granting appellee’s motion to increase the ad damnum. We affirm.
I.
On August 20, 1986, appellee, Katherine Tuerr, was a passenger on an elevator at the National Geographic Society Building where she worked. The elevator accelerated suddenly before coming to an abrupt, jolting stop as a result of which Mrs. Tuerr’s feet left the floor, and she hit her back and knee on the elevator railing. On August 4, 1986, another passenger on that same elevator, Miriam Miller, experienced a sudden acceleration and аn abrupt stop. This stop occurred when the safety mechanism engaged, causing the elevator cables to jump out of their grooves. The passenger had to be freed from the elevator by an Otis employee. Otis put the cables back in the grooves and returned the elevator to service. Elevator accidents are required to be reported to the Director of the Department of Consumer and Regulatory Affairs pursuant to 13A DCMR § 113.1. Government officials must investigate before any brоken or damaged part of the elevator is removed. Id. § 113.2. The elevator unit is not to be placed back in service until after investigation, satisfactory repairs, and rein-spection. Id. § 113.3. Otis did not report the accident of August 4 to the proper authorities.
Appellees relied primarily on the testimony of Donald Moynihan to establish liability. Mr. Moynihan testified that after the accident on August 4, 1986, Otis should have inspected and tested the equipment until it found the problem and that if it had done so, the August 20,1986 accident could have been prevented. He compared the situation with having the brakes fail on an automobile: until you ascertain and correct the problem, you cannot continue to drive the vehicle safely. On August 4, the safety set and the “ropes jumped the sleeve” and the elevator shut down, which the expert attributed to a violent stop. Mr. Moynihan testified that he found no fault with Otis for this earlier incident; however, in his opinion, the same thing happened again on August 20th, causing the safety to set, followed by а sudden jolt.
II.
Appellant argues that reversal is required because the trial court erred in allowing appellees’ witness, Donald Moynihan, to testify as an expert witness. Appellant contends that he did not possess the requisite experience to qualify as an expert in the area of elevator maintenance. We disagree. Whether a witness possesses the requisite qualifications to express an opinion on a particular subject is within the trial court’s discretion, and its decision in that rеgard will only be reversed for an abuse.
Dyas v. United States,
The trial court accepted Moynihan’s qualifications to testify as an expert in the
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field of elevator maintenance, “how elevators work,” elevator codes and their interpretation, the standard of care for elevators, and elevator maintenance contracts. The evidence was more than sufficient to support the trial court’s determination that the witness was qualified as an expert in the areas for which the court accepted him. The evidence showed that Mr. Moynihan is a self-employed elevator consultant who holds a bachelor of science degree in electrical engineering. He had been an engineer for Otis from 1948 until 1955 where he worked on designs and electrical systems which control elevators. In 1955 he went to work for a smaller elevator company which assembled and installed elevators. In 1961 he started working for the Dover Corporation, which was at the time of trial the second largest elevator company in the United States. While with Dover, he was vice president in charge of engineering and had 100 engineers working under him. He was involved in the redesign of all equipment. Mr. Moynihan designed the first gearless dumb-waiter, according to his testimony. In 1961, he bеcame a member of ANSI Codes, an invitation only organization, which issues a national elevator code which is used in the District of Columbia. As a member, he became a part of the code committee which writes it. His work has included the evaluation of the safety of elevators. At the time of trial, he was involved in examining elevators for code compliance and for a determination of what, if any, changes should be made to them. He had qualified in court as an expert witness between twеlve to sixteen times, three times in the District of Columbia. Although he did not engage in actual repairs, he directed them, and he monitored maintenance contracts. This evidence was more than adequate to establish Mr. Moyni-han’s qualifications as an expert witness in the fields in which he qualified. Accordingly, we find no abuse of discretion in the trial court’s decision to accept him as such.
See Waggaman, supra,
III.
Appellant’s second argument for reversal is more substantial, for essentially it is that appellees failed to estаblish liability. In order to establish negligence, a plaintiff has the burden of proof on the applicable standard of care, that the defendant deviated from that standard, and that there was a causal relation between the deviation and plaintiff’s injury.
Toy v. District of Columbia,
Appellees do not identify in the testimony of their expert witness evidence of thе relevant industry standard of care. Rather, they rely upon the duty of one maintaining an elevator to exercise reasonable care for the safety of the passengers.
See Otis Elevator Co. v. Robinson,
Similarly, a Pеnnsylvania court has held that evidence of the customary practices of the industry is not essential to a finding of negligence in an action for personal injuries arising out of an' elevator accident.
Dallas v. F.M. Oxford Inc.,
In this jurisdiction we have upheld the submission of the negligence issue to the jury in an elevator case applying the theory of
res ipsa loquitur. See Otis Elevator Co. v. Henderson,
(1) [t]ho event [is] of the kind which ordinarily does not occur in the absence of someone’s negligence; (2) it must be caused by an agency or instrumentality within the control (exclusive or joint) of the defendant; (3) it must not have been due to any voluntary action or contribution on the part of the plaintiff.
Id.
at 785 (quoting
Bell v. Westinghouse Elec. Corp.,
Appellant correctly points out that Mr. Moynihan failed to testify precisely what the stаndard of care is for a reasonably prudent elevator maintenance company. That does not end our inquiry on the issue. The expert expressed other opinions which are relevant to an evaluation of the sufficiency of the evidence to support liability consistent with the principles discussed in the preceding paragraphs. Moynihan testified that the two elevator accidents were related and that the problem recurred without Otis finding the problem and correcting it bеfore putting the elevator back in service. Indeed, Otis failed to comply with local reporting regulations which required investigation and repair before the elevator was returned to service. 13A DCMR §§ 113.1-113:3. While much of his testimony about what should have been done was couched in terms of the first person, Moynihan’s responses were in answer to an initial question about whether or not he had an opinion “to a reasonable engineering certainty, as to whether Otis exercised reasonable due care in maintaining this elevator during [the relevant] period of time.” The witness responded that he did have such an opinion, but when asked to express it, he frequently prefaced his remarks with “I.” Of course, it is insufficient for an expert witness to testify about only what he would do under similar circumstances.
Bell v. Jones, supra,
There is also additional evidence of negligence in the record. Appellees offered the testimony of David Walker, the manager of the elevator inspection section of the Department of Consumer and Regulatory Affairs for the District of Columbia. He testified that Otis failed to file any reports on the two accidents although it was required to do so under the applicable elevator code. See 13A DCMR §§ 113.1-113.3. Walker testified that the purpose of the regulation is to maintain elevator safety for the public and that it is the responsibility of the building’s owner, agent, or the elevator maintenance company to file the repоrt. See id. § 113.1 (“the operator in charge of the installation, or the superintendent or manager” shall notify the department).
When a particular regulatory or statutory requirement is enacted to prevent the type of accident which occurred here, the unexplained violation of that regulation will render a defendant liable as a matter of law if a plaintiff can establish that he or she is within the ambit of the statute.
Lewis v. Washington Metropolitan Area Transit Authority,
In summary, we conclude on appellant’s liability challenge that an elevator maintenance contractor owes at least a duty to exercise reasonable care to those who ride on the elevator.
Otis Elevator Co. v. Robinson, supra,
Appellant argues that even if Otis was negligent, appellees failed to establish that Otis’ negligence was the proximate cause of the accident on August 20th. Otis bases its argument on the fact that appellees’ witness could not establish precisely what malfunction caused the accidents. He could only identify a number of reasons such events would occur. However, he
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opined that it was the failure of Otis to identify the cause and curе the problem after the first accident which was negligent and which proximately caused appellee to be exposed to foreseeable danger. Where the precise cause of the accident was not known, it was more likely within the ability of Otis to ascertain.
See Otis Elevator Co. v. Robinson, supra,
IV.
Appellant contends that the substantial award in this case necessarily represented future lost wages and future nonmedical expenses. It argues that the trial courerred in permitting the economist to project future lost wages for Mrs. Tuerr because she failed to prove that she would suffer a diminution оf wages or need the assistance of a domestic helper in the future as a result of the accident. “The rule is that recovery of damages based on future consequences of a tort is available only if such consequences are reasonably certain.”
Curry v. Giant Food Co. of District of Columbia,
Expert evidence may be required when recovery is sought for permanent injuries or where there are complicated medical questions related to causation of such injuries.
Jones v. Miller,
Although Mrs. Tuerr had suffered a series of accidents prior to the elevator accident involved herе, she indicated that the types of injuries were either unrelated to those she sustained in the elevator accident and/or the symptoms did not persist for any significant period of time. 4 Dr. Boris Vlalukin, Mrs. Tuerr’s family physician, testified that he began treating her within one week of the accident. When Mrs. Tuerr’s symptoms persisted, he referred her to Dr. Guy W. Gargour, a neurosurgeon, who also testified at the trial. Dr. Gargour subsequently diagnosed a ruptured disc at L-5, S-l and later performed a lumbar laminectomy and diskectomy on Mrs. Tuerr on June 24, 1987. Her neurosurgeon testified that her back problems were the result of the elevator accident.
Dr. Vlalukin testified that the surgery, which was necessitated by the accident, could cause pain. Mrs. Tuerr testified that such pain persisted. She also had physical therapy and psychological treatment for *1261 depression which followed. Mrs. Tuerr testified that she resigned from her job because she had constant pain in her back and upon medical advice. Her supervisor testified that she told him in November 1987 that the commute was also one reason she wanted to resign. She testified that she was unable to do her job as well as she had previously and that she had to rely on others to help. She also said that among the reasons she resigned was that she could not depend upon her leg and her schedule of therapy interfered with car pool arrangements.
Mrs. Tuerr testified that she had days of pain when she could barely move as a result of the injuries associated with the elevator accident. She testified that she tried working at a variety of jobs (e.g., baby-sitting and sewing jobs), but she had difficulty on the days she was in pain. Mrs. Tuerr also looked without success for work she could physically perform closer to home to avoid the long commute. She testified that she needed assistance with her housework.
A jury may consider permanent losses or loss of future earnings when a plaintiff testifies to general impairment and interference with his or her activities caused by injuries.
Spar v. Obwoya,
V.
Finally, appellant argues that the trial court erred in failing to grant a new trial based on the excessiveness of the verdicts or, in the alternative, to reduce the verdict of Katherine Tuerr to the amount of the ad damnum. We find no error on either point. Our standard of review is abuse of discretion.
Phillips v. District of Columbia,
The trial court may permit recovery in an amount in excess of that prayed for by a party who seeks relief. Super.Ct.Civ.R. 54(c). The rule provides that “every final judgment shall grant the relief to which the party in whose favor it is rendered is entitled, even if the party has not demanded such relief in [his] pleadings.” The trial court may in the exercise of its discretion grant a plaintiff leave to amend the ad damnum even after judgment.
Miller v. District of Columbia,
Accordingly, we affirm the judgment for appellees.
Notes
. Appellant's motion to reduce Mrs. Tuerr’s award to the amend the complaint to increase the ad damnum, and the trial court granted it.
. The trial court, over appellant’s objection, properly instructed the jury on res ipsa loquitur.
. We also reject appellant’s argument that the admission of expert testimony was prejudicial since it was not beyond the ken of the average lay person. Some of the opinions of the expert were clearly admissible, and therefore there was no prejudice to appellant in this case.
. In 1977, Mrs. Tuerr sustained a whiplash injury; however, she testified that her condition returned to normal in about one month. In 1984, Mrs. Tuerr was in another car which was struck broadside as a result of which she lacerated her forehead and foot. She denied having any permanent residual injuries as a result. In February 1985, she fell and sprained her ankle. In March 1987, she was in an automobile accident, but she denied suffering any significant injuries except for general stiffness and muscle spasms in her back for about two weeks. In August 1987, she was involved in a fourth accident in which her car flipped over and struck a tree. She sustainеd bruises on her head and thigh and a strained back as a result.
. We also reject appellant’s argument that it was error to allow the economist to testify as to what plaintiff's future lost earnings would have been if she had lost fifty percent of her earning capacity where the evidence showed that she suffered a thirty percent disability of the body as a whole. The economist explained to the jury a formula by which it could calculate for future lost wages in the event it should determine that plaintiff’s earning capacity was greater or lesser than fifty percent. We find appellant’s argument unpersuasive.
