scope:

This specification covers the general requirements, property and performance requirements, quality, quality control requirements, source approval and quality control.

Restricted Chemical Substances

Effective January 1, 2007, all product supplied to the requirements of this specification must comply with the requirements of the MPAPS B-50 specification.

APPLICATION

This specification covers plywood material used in school bus floor systems, seat supports, sleeper bunks and other applications.

Type 1 - Standard School Bus flooring/underlayment - B-C, exterior grade adhesive.

Type 2 - Optional School Bus - Marine Grade plywood.

Type 3 - Fungus-rot resistant plywood for School Bus floor - Reserved.

Type 4 - Sleeper bunk support - Medium Density Overlay (MDO).

Type 5 - School Bus seat support-base - plywood

Type 6 - Optional School Bus - Phenolic coated birch plywood.

Type 7 - Veneered and treated medium density fiberboard (MDF) variant for interior trim applications.

Type 8 - An MDF similar to Type 7 but with no veneer.

Type 9 - School Bus seat support-base - oriented strand board (OSB)

Type 10a - Sleeper bunk support - Exterior grade Baltic Birch plywood made entirely of Birch Veneers with phenolic resin glue between those veneers. Finish BB/CP.

Type 10b - Sleeper bunk support - Exterior grade Baltic Birch plywood made entirely of Birch Veneers with phenolic resin glue between those veneers. Finish CC/CP.

Type 10c - Sleeper bunk support -Phenolic coated exterior grade Baltic Birch plywood made entirely of Birch Veneers with phenolic resin glue between those veneers. Finish BB/CP.

Type 10d - Sleeper bunk support -Phenolic coated exterior grade Baltic Birch plywood made entirely of Birch Veneers with phenolic resin glue between those veneers. Finish CC/CP