Donald O’Neal Griffin (appellant), an inmate of Kansas State Penitentiary at Lansing, Kansas, petitioned the District Court of Leavenworth County, Kansas, for a writ of habeas corpus. He alleged that he did not receive a fair hearing before the penitentiary hearing board, that his punishment should be classified as “cruel and unusual,” and that the penitentiary board violated his fundamental rights of equal protection and due process of law. His petition for habeas corpus was dismissed, and this appeal followed.
This case arises out of an unusual set of circumstances. Appellant, at some undisclosed time prior to the incident giving rise to this cause of action, requested and was granted protective custody. All prisoners who request protective custody are housed in the A and T building. Those prisoners who are housed in the east wing are denied certain privileges enjoyed by prisoners residing in the north wing. The most substantial of these is that prisoners granted work privileges are chosen from the north wing. If a prisoner loses his job he is transferred to the east wing.
The Kansas Supreme Court recently stated in Foster v. Maynard, 222 Kan. 506, 508-10, 565 P.2d 285 (1977) as follows:
“The appellants’ first point on appeal is that their confinement in the east wing of the A and T Building is illegal. They contend they have suffered a loss of institutional privileges without being accorded a prior hearing in violation of the due process clause of the Fourteenth Amendment. We disagree.
“. . . This administrative classification decision allowed the most efficient inmate workers to work in the laundry and removed a potentially disruptive influence upon the remaining protective custody population.
“. . . The classification decision of prison officials to house the appellants *597on the east wing because of the unavailability of space on the north wing and because of their aggressive behavior clearly constitutes a reasonable exercise of discretion .... The determination implicated no constitutional right of the appellants. The classification of prisoners concerning housing and job assignments is necessary to the proper administration of a state prison and rests within the sound discretion of the prison administrator.”
Foster makes it clear that whether a prisoner requesting protective custody is housed in the north or the east wing is an administrative decision within the sound discretion of the prison administrator and will not be interfered with by the courts. It is also clear that a prisoner who has requested protective custody may remove himself from protective custody at any time.
In the instant case appellant was involved in a fight at his place of employment in the prison, resulting in disciplinary proceedings being brought against him. Under the disciplinary regulations the prison authorities were authorized to sentence appellant to a segregation period of 7 to 15 days and to deduct up to 30 days of his good time.
The prison authorities did not distinguish which resulting actions taken in regard to appellant were administrative and which were disciplinary. No disciplinary segregation was imposed, but appellant was removed from the laundry work detail and pay status for thirty days. He was transferred to the east wing, but the order noted he could earn back his laundry status at the discretion of the officer in charge of the A and T Building.
The Kansas court in Foster, 222 Kan. at 509, relied on Meachum v. Fano, 427 U.S. 215, 49 L.Ed.2d 451, 96 S.Ct. 2532 (1976), a case which involved a prisoner’s civil rights relative to his transfer from one state prison to a prison with considerably more severe conditions of confinement, without a prior hearing. In Meachum, the high court stated:
“We reject at the outset the notion that any grievous loss visited upon a person by the State is sufficient to invoke the procedural protections of the Due Process Clause. . . .
“Similarly, we cannot agree that any change in the conditions of confinement having a substantial adverse impact on the prisoner involved is sufficient to invoke the protections of the Due Process Clause. The Due Process Clause by its own force forbids the State from convicting any person of crime and depriving him of his liberty without complying fully with the requirements of the Clause. But given a valid conviction, the criminal defendant has been constitutionally deprived of his liberty to the extent that the State may confine him and subject him to the rules of its prison system so long as the conditions of confinement do not otherwise violate the Constitution.” 427 U.S. at 224.
*598Appellant’s main contention seems to be that once prison officials undertake a disciplinary proceeding, they are precluded from taking any administrative action concerning the prisoner. However, we are of the opinion that what can be done administratively, without any hearing at all, can be done by procedures which afford a hearing. The disciplinary rules and regulations in effect at the time of the hearing allowed for disciplinary segregation of 7-15 days, and a good time forfeiture of up to 30 days. Appellant, however, was not sentenced to punitive segregation. He was free to leave the disciplinary section of the A and T Building at any time he might choose, simply by withdrawing his name from the protective list. We view the order as one of form rather than of substance. All the parties agree that, had the order been classified as administrative, the action taken would clearly have been within the authority of the prison administration.
The existence of written guidelines for disciplinary proceedings does not mandate that prison authorities must elect either administrative procedures or disciplinary procedures. Fighting in prison is a serious infraction that could easily lead to death or serious injury of inmates or personnel. To hold that prison authorities, by choosing to punish an inmate under the disciplinary procedures, thereby lose their authority to transfer him, administratively, from his job in the prison, or to a different location therein, would be to unduly restrict the prison authorities.
We conclude that the action of the disciplinary board was well within their authority as determined in Foster and Meachum.
Appellant does not contest the proceedings per se except to contend one member of the three-man disciplinary board was so biased as to deny him a fair hearing, in violation of the due process clause. First, we note that the appellant did not suffer any loss of privileges or rights which would require a prior hearing. Appellant testified that Officer Lynch was hostile toward him because of his prodigious filing of writs against prison officials. The only other evidence of Officer Lynch’s alleged prejudice was the hearsay testimony of another inmate. The trial court is the sole judge of the credibility of witnesses and the weight to be given the evidence presented. Parish v. Parish, 220 Kan. 131, 551 P.2d 792 (1976). Absent a clear abuse of that discretion, the trial court’s determination will stand. We find no such abuse of discretion in the instant case.
*599Appellant argues there was disparity in privileges given to him and to other inmates, and that this discrimination violated his constitutional rights. This contention lacks merit. The privileges, which involved location of imprisonment and the absence of work privileges, do not rise to constitutional proportions. The Kansas Supreme Court dealt with a very similar situation in Foster.
Appellant also complains that because the appellees failed to present direct evidence, the court was obliged to accept his evidence as a prima facie case. Appellant’s argument overlooks the presumption that operates in favor of the disciplinary board proceeding. Until the contrary is shown, it is presumed that the board operated properly. 29 Am. Jur. 2d, Evidence §§ 171-172. More importantly, however, appellant did not necessarily carry his burden of proof in that the trial court was not obliged to believe his testimony. See Withrow v. Larkin, 421 U.S. 35, 43 L.Ed.2d 712, 95 S.Ct. 1456 (1975).
While the foregoing reasoning and citations are ample to sustain the action of the trial court, we deem this a proper case to state the general rule that courts normally do not engage in useless acts. If we were to reverse the case because of the state’s taking administrative action in conjunction with a disciplinary proceeding, the prison authorities could hand appellant our decision and immediately thereafter hand him an administrative order transferring him to the east wing and removing him from his job at the laundry. The only way to avoid such a result would be for this court to order the prison authorities to restore appellant to his job in the laundry and to the prison’s general population. To order reinstatement of appellant’s job would be a grossly unjustified interference with prison authorities, and to release appellant from protective custody-would be contrary to appellant’s own wishes.
Affirmed.