Plaintiff heating company entered into a subcontract with defendant, April 28, 1952, to furnish plumbing and heating according to specifications in a contract 761, between defendant and the department of army. The heating company also entered into another subcontract with defendant, July 2,1952, for excavating and trenching according to specifications in a contract 884 between defendant and the army. Plaintiff heating company instituted suit in assumpsit for $29,407.40. It claimed, among other things, that during the course of work, defendant “requested and ordered plaintiffs to do certain extra and additional work which was not provided” in the written contract, including labor and materials and especially certain “additional unnecessary overtime” which the heating company allegedly paid its employees. Defendant answered admitting owing plaintiff heating company $3,747.54, balance under contract 884, and denying all other liability. Somewhat later, defendant filed an amended answer claiming set-off and recoupment in the amount of $30,000. Therein, it was alleged that defendant was required to pay additional sums because of delays occasioned *208by plaintiff beating company. Upon its motion, the indemnity company was permitted to intervene as a party plaintiff. It had previously become surety to the heating company on a performance bond in 'connection with contract 761. Prior to suit, “a part of the claim” of the heating company as to contract 761 had been assigned to the indemnity company. A verdict was rendered in favor of plaintiffs for $4,696.54, on contract 884, and $21,188.83, on contract 761. Defendant appeals from an order denying new trial.
] After claim of appeal was filed October 10, 1958, defendant experienced difficulty in securing a transcript of testimony from a court reporter who took testimony for 3 days of the trial which lasted approximately 2 weeks. The reporter obviously was unable to transcribe his notes without assistance, despite the encouragement of a contempt citation. Finally, he did transcribe with assistance and a separate motion for new trial made in this Court and referred to the trial court was denied by the trial court May 22, 1961. The trial court ruled “the court having been advised by counsel for plaintiffs and defendant that the transcript * * * has been completed, certified and filed with the * * * clerk * * * motion * * * is denied.”*
Defendant contends that the verdict was against the great weight of evidence and contrary to law. Defendant says the verdict was contrary to law because there was a misjoinder, of parties-plaintiff and of causes of action; and because the trial judge erred in that the “interpretation of the contract was left to the jury.”.
*209Defendant argnes also that the tardy transcript,coming from a “stenographer, not an officer of the court” and “uncertified” should he grounds for a new trial. It also argued that the verdict by the jury disallowing defendant’s claim by way of set-off and recoupment is contrary to the great weight of evidence. Finally, it is urged that in the event judgment against defendant is affirmed, interest on the judgment should not run from date of entry because delay in obtaining the transcript was not the fault of defendant but of the court reporter.
Defendant’s contention of misjoinder of parties and causes is untenable. The real reason for uniting the parties and causes in this lawsuit is because the “convenient administration of justice,” based upon sufficient grounds, is best served. Alles v. Polk Manor Co., 339 Mich 509; CL 1948, § 608.1 (Stat Ann § 27.591). In the instant case, Hartford and the heating company are joint owners of the cause of' action under contract 761, Hartford-being assigneeof part of the heating company’s claim against defendant. Both 761 and 884 involve nearly contemporaneous work on the same project location. Parties to the original contracts are the same. Proofs as to alleged oral agreements for extras are made and contested by approximately the same witnesses in each instance. In Gilmer v. Miller, 319 Mich 136, the dismissal of 2 counts on the grounds of misjoinder. was reversed, this Court holding that while such dismissal might have been warranted under common law, the language of the statute is broad and goes far beyond the previous practice. The action was originally instituted in assumpsit for moneys had and received by a real-estate broker who had allegedly breached his fiduciary duty by nondisclosure of self-interest. The problem arose-upon the assignment of- the land contract upon which the broker’s commission was based. In reversing *210the trial court’s dismissal of the action by the assignee this Court held at pp 143, 144:
“While each case of this nature must be determined largely on its own facts (Torrent v. Hamilton, 95 Mich 159), we think that the ends of justice in the case at bar will properly be served by permitting the plaintiffs to proceed to trial on the declaration as filed. It does not appear that defendant will in any way be thereby prejudiced. In fact, it would seem to be to his advantage to have the issues involved tried in 1 proceeding rather than in 2 or 3 separate suits. # * * The rights of the parties may and should be determined in a single action. The facts clearly indicate that the ‘convenient administration of justice’ will thereby be promoted.”
Defendant further contends that the trial court erred by allowing contracts 761 and 884 to be interpreted by the jury rather than the court. Plaintiffs’ position is most nearly summed up in the opening statement of plaintiffs’ attorney. He said: “The big argument is whether Johnson and Brown are entitled to this money as extras or whether under their contract they were supposed to do all this work.” It is necessary to examine each item separately to settle this question.
Regarding contract 884, defendant concedes that the contract was fully performed and acknowledges owing a balance of $3,747.54, contending nonpayment was due to outstanding claims of plaintiffs’ creditors. Defendant denies liability for an additional amount of $949 claimed for graveling a parking lot. Neither party claims that graveling of the lot was included in contract 884, however, there exists a conflict as to why it was done. The testimony of plaintiff Brown indicates that the parking area was graveled by order of Hamilton who was acting project engineer at the time, and also by order of McKay, de*211fendant’s construction .superintendent' on'' the joh. This was denied by defendant. Obviously, the trial court properly submitted to the jury this dispute as to whether or not there was an oral agreement for extra work. 6 MLP, Contracts, § 193, p 438. See, also, Wenzel v. Kieruj, 168 Mich 92.
The record indicates that there were several areas of dispute regarding contract 761. The sum of $2,606.34 was claimed for reworking the original installation for heat risers. Plaintiff Brown testified that the original plans called for cement block walls, approximately 8 inches in thickness. Plaintiff states that a subsequent alteration was proposed by defendant changing the wall material and measurements. However, when such material was not available, defendant is said to have returned to the original plan, thus necessitating additional work by plaintiffs to adapt to the changed plans. Plaintiffs contend this was done on special order under new blueprints furnished by defendant. Defendant '.denied this and it was properly submitted to the jury. Michigan Law and Practice, supra. The amount of $41.91 was claimed because certain cleanout drains were broken by defendant’s bulldozer operator. Defendant asserted that it was plaintiffs’ responsibility to protect their finished work. Nothing in the contract covers this dispute, and although it sounds in tort, it is permissible under the statute. CL 1948, § 608.1 (Stat Ann § 27.591), supra. See Holmes v. Borowski, 233 Mich 407.
Plaintiffs claimed $922 for hooking up certain kitchen equipment to water and sewer outlets. Defendant says it was covered in the written contract. Section 19-15e of said contract (761) required that “a valve with drain shall be installed on the service line inside the building. The piping shall be extended to all fixtures, outlets, and equipment from the valve.” This language neither specifies the por*212tion or the building intended, such as kitchen or other, nor does the phrase “extended to” mean “connect up with” as a matter of law. Therefore, this ambiguity was properly submitted to the jury as to what the parties intended. Millar v. Macey Co., 263 Mich 484.
Plaintiff claimed $473.96 as an extra for a pressure reducing station for kitchen equipment, $39.95 for extra pressure tools, $160.95 for cutting holes in a roof for building exhaust, and '$143.05 as miscellaneous expense, including boiler inspection costs. Defendant claims these items are covered in various provisions of the written contract. A minute inspection of each contract provision cited by defendant leaves but 1 conclusion as to these items: the language of the contracts provides ho clear answer as to ivhat was intended. We conclude, as to these items, that there was sufficient ambiguity to present a-fact question for the jury as to what was intended by the parties under the written contract.
Another item in dispute was for $1,980 which plaintiffs claim was improperly withheld by defendant. Defendant paid the amount to the army as liquidated damages for failure to deliver beneficial occupancy on time. Defendant refers us to 2 sections of specifications of the contract which deal with completion dates' and damages to be assessed for failure to deliver. The dispute, however, is not over what the written contract provides, but whether plaintiffs caused the delay. Again the testimony A\ras in conflict over whether plaintiffs had breached the contract by failure to perform. Obviously, this Aims a fact question.
Sharpest conflict is reserved for plaintiffs’ claim for overtime both as to liability and as to amount. Testimony of plaintiffs is that due to defendant’s faulty management of the project, plaintiffs ‘ were frequently ordered to work overtime. This was dis*213puted; however, 1 of defendant’s witnesses indicated that plaintiff heating company was ordered to work overtime on 2 occasions only. This, too, was an issue of fact for the jury. Further on this point, defendant contends that even if it were liable for overtime, plaintiffs’ method of computation was erroneous. In its instructions to the jury, the trial court presented both theories of computing overtime. The jury chose plaintiffs’ method. It was properly a fact question.
At this point, it is important to note that the trial judge carefully instructed the jury as to each contested item enumerated above. He explained, as to each item, plaintiffs’ and defendant’s contentions, summarizing each instruction with the customary charge that “if you find from a preponderance of the evidence” plaintiffs have proved, et cetera, “then you must find for plaintiffs.” The converse was also charged by the judge, as to each item, from the standpoint of defendant’s theory and proofs. We conclude as to the disputed items of extra work that each was fairly submitted to the jury.
Defendant further contends that the jury verdict on its claim of set-off and recoupment was contrary to the great weight of evidence. Defendant offered testimony to prove that plaintiff heating company failed to perform according to the written contract. One of plaintiffs testified that all of the items in the contract were completed. The testimony presented largely a question of credibility for the jury. Although obviously in sharp conflict, the evidence adduced in behalf of plaintiffs, on this point, was sufficient to sustain the verdict as to the counterclaim. Based upon the testimony, therefore, we do not find that the verdict was against the great weight of the evidence.
Defendant claims further that the circumstances surrounding transcription of the 3 days of testimony *214by the delinquent reporter operated to deprive it of adequate review on appeal. We can only answer that defendant has not shown in what way it has been prejudiced. It is not claimed that the transcription is inaccurate; in fact, defendant quotes and relies upon portions of the transcript which is attacked. Under these circumstances, we conclude that there is no prejudice to defendant’s presentation on appeal.
Finally, it is defendant’s contention that because of the delay of 3 years in receipt of portions of the transcript, interest should not be charged on the judgment from the date of entry. CLS 1961, § 600. 6013 (Stat Ann 1962 Rev § 27A.6013) provides in part:
“Execution may be levied for interest on any money judgment recovered in a civil action, such interest to be calculated from the date of judgment at the rate of 5% per year.”
The provision of the former statute, CL 1929, § 14555 (Stat Ann § 27.1520),* is construed in Jones v. O’Donnell, 292 Mich 189, 196, to mean that interest is computed from the date of entry of judgment, not from the date of affirmance. We find no warrant in the statute or case law for excusing interest on the judgment. However, as a discretionary matter, in view of the circumstances, no costs are awarded in this Court. See OCR 1963, 822.
Affirmed, without costs.
Carr, C. J., and Dethmers, Kelly, and O’Hara, JJ., concurred with Smith, J.