Strike Section 403.3.1 of theInternationalExistingBuildingCode in its entirety and insert new Section 403.3.1 to theExistingBuildingCode in its place to read as follows:
Design live load. Where the alteration does not result in increased design live load, existing gravity load-carrying structural elements shall be permitted to be evaluated and designed for live loads approved prior to the alteration. If the approved live load is less than that required by Section 1607 of the Building Code, 12 DCMR A, the area designed for the nonconforming live load shall be posted with placards of approved design indicating the approved live load. Where the alteration does result in increased design live load, the live load required by Section 1607 of the Building Code shall be used.
Exception: In buildings erected before July 1, 1925, the code official is authorized to allow a maximum reduction of 30 percent of the specified minimum live loads in Table 1607.1 of the Building Code, with a minimum live load for other than residential buildings of 40 psf (1.92 kN/m2), provided official live load placards are posted showing this reduced live load.
D.C. Mun. Regs. tit. 12, r. 12-J403