INCH-POUND TT-B-1325D
06 August 2007
SUPERSEDING TT-B-1325C June 1, 1993
FEDERAL SPECIFICATION
BEADS (GLASS SPHERES) RETRO-REFLECTIVE
The General Services Administration has authorized the use of this federal specification by all federal agencies.
1. SCOPE AND CLASSIFICATION.
1.1 This specification covers three types of retro-reflective beads used to reflectorize traffic and airfield marking paints.
1.2 Classification.
1.2.1 Type I - Low Index of Refraction recycled glass (fire-polished process) Gradation A (Coarse, Drop-on)
Gradation B (Fine, Premix) Type II - Deleted
Type III - High Index of Refraction
Type IV - Low Index of Refraction direct melt glass (molten glass kiln process)
Gradation A (Large Coarse, Drop-on) Gradation B (Medium Coarse, Drop-on)
2. APPLICABLE DOCUMENTS.
2.1 Government Publications. The issues of the following documents, in effect on date of invitation for bids or request for proposal, form a part of this specification to the extent specified herein.
FEDERAL LANDS, HIGHWAY
T 520-93 - Determining the Roundness of Large Glass Beads
FEDERAL STANDARDS
Beneficial comments, recommendations, additions, deletions, clarifications, etc. and any data which may improve this document should be sent to: HQ AFCESA/CESC, 139
Barnes Drive, Suite 1, Tyndall AFB FL 32403-5319.
FSC 8010
Distribution StatemenStouArc.eA: hpttpprso://vaessdistf.dolar.mpiul b--liDcowrenlloeaadesde: .20D14is-0t9ri-b27uTt1io8:n45Zis unlimited.
Check the source to verify that this is the current version before use.
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