Section 12-J1012. CHANGE OF OCCUPANCY CLASSIFICATION

Insert new Section 1012.1.5 in the Existing Building Code to read as follows:

1012.1.5 Air-borne sound. All buildings undergoing a change of occupancy classification shall comply with Section 903.4.

Strike Section 1012.4.2 of the International Existing Building Code in its entirety and insert new Section 1012.4.2 to the Existing Building Code in its place to read as follows:

 

1012.4.2 Means of egress for change of use to equal or lower hazard category. When a change of occupancy classification is made to an equal or lesser hazard category (higher number) as shown in Table 1012.4, existing elements of the means of egress shall comply with the requirements of Section 905 for the new occupancy classification. Newly constructed or configured means of egress shall comply with the requirements of Chapter 10 of the Building Code, 12 DCMR A.

 

Exceptions:

 

1.  Any stairway replacing an existing stairway within a space where the pitch or slope cannot be reduced because of existing construction shall not be required to comply with the maximum riser height and minimum tread depth requirements.

 

2. When the following conditions are met, a single open stair shall be permitted to serve as the exit:

 

1. Change of use Group from R-3 to B;

 

2. The building is three stories above grade or less;

 

3. Occupant load served is fewer than 50 persons;

 

4. Egress capacity is met; and

 

5. The existing egress features are maintained or improved.

 

 

authority

Section 10 of the Construction Codes Approval and Amendments Act of 1986 (Act), effective March 21, 1987 (D.C. Law 6-216; D.C. Official Code § 6-1409 (2012 Repl.)) and Mayor’s Order 2009-22, dated February 25, 2009, as amended.

source

Final Rulemaking published at 61 DCR 3336 (March 28, 2014 – Part 2).

EditorNote

The District of Columbia Existing Building Code (2013), referred to as the “Existing Building Code,” consists of the 2012 edition of the International Existing Building Code as amended by the District of Columbia Existing Building Code Supplement (2013)(12 DCMR J)). The International Existing Building Code is copyrighted by the International Code Council and therefore is not republished here. However, a copy of the text may be obtained at: http://publicecodes.cyberregs.com/icod/iebc/2012/index.htm?bu=IC-P-2012-000006&bu2=IC-P-2012-000019.