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AASHTO

American Association of State Highway and Transportation Officials. Governing body responsible for the following pole specification: "Standard Specifications for Structural Supports for Highway Signs, Luminaires, and Traffic Signals." (Also called LTS-2)

ACORN NUT

Decorative anchor bolt nut with enclosed rounded top.

AGENT

Representative of manufactured products and responsible for communication, sales and service of customers within a specified region.

AISC

American Institute of Steel Construction

ALLOWABLE STRESS

Maximum permissible stress as defined by design criteria.

ALLOY

A compound mixture consisting of one or more base elements (metal) to achieve desired physical or mechanical properties. Examples of different aluminum allows are as follows: 6063: Standard pole and arm shaft material.
4043: Standard aluminum welding electrode.
5356: Standard aluminum welding electrode.
6061: Special pole and arm shaft material.
356: Standard flange base casting material.

ALUMINUM

A silver-white non-ferrous metallic element whose features and physical properties include: a good resistance to temperature variations, high reflectivity, resistance to oxidation, ductility, light weight, and recyclable.

ANCHOR BASE

See "Fixed Base"

ANCHOR BOLT

Threaded steel rod embedded into concrete and used to connect the pole to the foundation.

ANGLE IRON

ping

ANODIZING

The process of coating a metallic surface electrolytically. This process normally involves the combination of electrical current and chemical bath in which the material's surface or "skin" is altered to form a protective shield for the remaining material

ANSI

American National Standards Institute

APPROVAL DRAWING

Formal drawing submitted to customer for their review to determine acceptability of product.

ARCHITECTURAL COATING

Special finish coating designed to give the appearance of concrete, marble, granite or sandstone.

ARGON

Inert gas element utilized as a shielding component of "gas metal arc welding" (GMAW) or "metal inert gas welding" (MIG). Generally utilized when welding aluminum or like materials.

ARM

A single extension of any cross section used to mount a single fixture.

ARM RISE

The vertical distance from the center line of the simplex connection to the center line of the arm end.

ARTIFICIAL AGING

Process of heating and cooling a material in a controlled manner to develop desired mechanical properties. (See also heat treat).

ASTM

American Society for Testing and Materials

ASTRO BRACKET

Device used to attach a traffic signal to the pole or mast arm. Normally rigid mounted, but can also be free swinging.

AWS

American Welding Society

AXIAL FORCE

Force along the longitudinal axis of a member. When designing a foundation this figure relates to the weight of a structure plus any added devices or equipment.