Structural Requirements & Testing Procedures for Access Floors

News > Structural Requirements & Testing Procedures for Access Floors

The PSA MOB PF2/SPU performance specification is prescriptive and in addition to performance under load the PSA standard includes site installation points, recommended life expectancy of the raised floor system and more.

Four Standards of Performance

The Specification has four UK standards: Light, Medium, Heavy and Extra Heavy use. These are arranged vertically in that each grade will comply with any grade that is lower in the scale. With the PSA Specification, systems must be independently tested and certified.

Every complete PSA-grade access floor system will comply with one of the following working strength grade requirements:

Grade

Static Loadings

Concentrated Load

Uniformly Distributed Load

Light

Not less than 2.7 kN over 300mm sq. and Not less than 1.5 kN over 25mm sq.

Not less than 6.7 kN/m2

Medium

Not less than 4.5 kN over 300mm sq. and Not less than 3.0 kN over 25mm sq.

Not less than 8.0 kN/m2

Heavy

Not less than 4.5kN over 25mm sq.

Not less than 12.0kN/m2

Extra Heavy

Not less than 4.5kN over 25mm sq.

Not less than 12.0kN/m2

This grade is also required to sustain a total load of 11kN applied equally on four points, each point 25mm sq. on a 200mm x 200mm square configuration at any point on the system

Comprehensive Testing Procedure

To achieve a PSA MOB PF2 PS/SPU grade, a raised access floor system must undergo a stringent independent testing procedure which includes analysis of:

Download the PSA Standards

To download a copy of the latest PSA standards, visit the AFA standards page or to get in touch, telephone 0845 120 0068, or email information@theafa.com.