PUBLIC LAWS-CHS. 529, 530 -JUNE 19, 1948 the construction of certain bridges and to extend the times for com- mencing and/or completing the construction of other bridges over 47 stat. M1. the navigable waters of the United States", approved March 4, 1933, is amended by striking out "twenty years" and inserting in lieu thereof "thirty years ; and the second sentence of section 5 (e) of said Act is amended by striking out the language "or the rates of toll shall thereafter be so adjusted as to provide a fund of not to exceed the amount necessary for the proper maintenance, repair, and operation of the bridge and its approaches under economical management". Approved June 19, 1948. [CHAPTER 530] AN ACT June 19, 1948 [H. R . 34331 To amend the Act entitled "An Act to classify the officers and members of the [Public Law 699] Fire Department of the District of Columbia, and for other purposes", approved June 20, 1906, and for other purposes. Be it enacted by the Senate and House of Representatives of the D.F Dpartment, United States of America in Congress assembled, That section 3 of the Act entitled "An Act to classify the officers and members of the Fire Department of the District of Columbia, and for other purposes", 34 tat. 314. approved June 20, 1906, as amended (D. C . Code, 1940 edition, section 4-404), is amended to read as follows: Composition. "SEc. 3 . That the Fire Department of the District of Columbia shall be composed of and operated upon a two-platoon system and the per- sonnel thereof shall consist of one chief engineer; such number of deputy chief engineers (all of whom shall have had at least five years' experience in some regularly organized municipal fire department) and battalion chief engineers as said Commissioners may deem neces- sary from time to time within the appropriations made by Congress; one fire marshal; such number of deputy fire marshals, inspectors, and clerks as said Commissioners may deem necessary from time to time within the appropriations made by Congress; such number of captains, lieutenants, and sergeants as said Commissioners may deem necessary from time to time within the appropriations made by Congress; one superintendent of machinery; and such number of assistant superin- tendents of machinery, pilots, marine engineers, assistant marine engi- neers, marine firemen, privates of class six, privates of class five, privates of class four, privates of class three, privates of class two, privates of class one, hostlers, and laborers as said Commissioners may deem necessary from time to time within the appropriations made by geterinary Congress: Provided,That the chief engineer of the Fire Department of the District of Columbia shall have the right to call for and obtain the services of any veterinary surgeon employed by said District who at the time shall not be engaged in a more emergent veterinary service Police surgeons. for said District: Provided further, That the police surgeons of said District are required to attend, without charge, the members of the Fire Department of said District, and examine all applicants for appointment to, promotion in, and retirement, from said Fire Department." Establishment of SmO. 2 . (a) The Commissioners of the District of Columbia are authorized and directed to (1) establish a workweek of not more than seventy hours for officers and members of the Fire Department of the District of Columbia on night-platoon duty and of not more than fifty hours for such officers and members on day-platoon duty, and (2) require that the hours of work in each such workweek be performed ff-uty perid. within a period of five of any seven consecutive days. The two days off duty in each seven-day period to which each officer and member of 498 [62 STAT.
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