 |
Service Classes The
service class defines the environment in which the glulam beam is intended
to be used. There are three service classes defined as shown on the following
table.
|
Service
Class
|
Description
|
Environmental
Conditions
|
|
1
|
Interior
|
Service
Class characterised by moisture content in the materials corresponding
to a temperature of 30C and relative humidity of the surrounding air
only exceeding 65% for a few weeks per year. For example: Domestic
Houses, Commercial Offices. |
|
2
|
Exterior,
under cover
|
Service
Class characterised by moisture content in the materials corresponding
to a temperature of 20C and relative humidity of the surrounding air
only exceeding 85% for a few weeks per year. For example: Open sheds,
exposed beams under soffits, porches, wool scouring plants, laundries. |
|
3
|
Exterior,
full exposed
|
Service
Class characterised by climatic conditions leading to higher moisture
content than Service Class 2, or where timber is directly exposed
to sun and/or rain. For example: Marine structures, bridges. |
|
