If a member of this plan who is entitled to industrial disability retirement benefits is not qualified for voluntary ser-vice retirement he or she shall receive a disability retirement allowance equal to fifty (50) percent of his or her final compensation. If such member is qualified for voluntary service retirement, he or she shall receive a disability allowance of an amount equal to the service retirement allowance he or she would have received if he or she had elected to retire from service on the date when the retirement system manager orders his or her retirement for industrial disability, or an allowance equal to fifty (50) percent of his or her final compensation, whichever amount is greater. (Prior code § 34.05.510)