T33A: Total Thickness - Carpets

AWTA TEST CODE

:

T33A

OTHER NAMES

:

TEST METHODS

:

AS 2111.1
ASTM D5848
BS 4051
ISO 1765
IWS 142

IMAGE

:

Thickness Measuring Device - With Specimen Being Measured

APPLICATION

:

The method is applicable to all forms of textile floor coverings. Soft underlays of all types may also be measured.

PRINCIPLE

:

The thickness of a conditioned specimen of textile floor covering is measured as the distance between a reference plate on which the specimen rests and a parallel circular presser foot exerting a pressure of 2kPa (approximately 20g/sq.cm) area of defined size. Soft underlays are usually measured at a pressure of 1kPa. Thickness is expressed to the nearest 0.1mm.

SAMPLES REQUIRED FOR TESTING

:

A piece of floor covering approximately 500mm square. Where the floor covering has more than one thickness in the construction, all must be included in the sample piece.

INTERPRETATION

:

Thickness is usually included in the carpet specification. A tolerance of
+/- 5% of nominal is usually acceptable.

SERVICE TARGET

:

6 working days

COST

:

See fees list