MCM shall be required to comply with all of the following:
- MCM shall have a self-ignition temperature of 650°F (343°C) or greater when tested in accordance with ASTM D 1929.
- MCM shall conform to one of the following combustibility classifications when tested in accordance with ASTM D 635:
Materials that have a burning extent of 1 inch (25 mm) or less when tested at a nominal thickness of 0.060 inch (1.5 mm) or in the thickness intended for use.
Materials that have a burning rate of 21/2 inches per minute (1.06 mm/s) or less when tested at a nominal thickness of 0.060 inch (1.5 mm) or in the thickness intended for use.
The maximum area of a single MCM panel and the minimum vertical and horizontal separation requirements for MCM panels shall be as provided for in Table 1407.11.3.4. The maximum percentage of exterior wall area of any story covered with MCM panels shall not exceed that indicated in Table 1407.11.3.4 or the percentage of unprotected openings permitted by Section 705.8, whichever is smaller.
|FIRE SEPARATION |
CLASS OF MCM
AREA OF EXTERIOR
WALL COVERED WITH
|MAXIMUM SINGLE |
AREA OF MCM
|MINIMUM SEPARATION OF MCM PANELS |
|Less than 6||—||Not Permitted||Not Permitted||—||—|
|6 or more but less than 11||CC1||10||50||8||4|
|CC2||Not Permitted||Not Permitted||—||—|
|11 or more but less than |
or equal to 30
|More than 30||CC1||50||Not Permitted||3a||0|