FEATURES

Utility poles are grey, tapered, round prestressed spun concrete. The Hampton Series pole is the style utilized for distribution and transmission purposes.

This specification is intended to outline the requirement of CSA A14-M2000, as they pertain to prestressed concrete distribution and utility poles.

Poles are manufactured in accordance with A14-M2000, as well as those amendments which are specified by the clients.

Poles are designed in accordance with CSA Standard CAN3-A23.3M1984, Code for Design of Concrete Structures for Buildings. The poles are tested to confirm these designs for both bending and torsional resistance.

Utility poles have a provision for grounding which consists of either a stranded jumper copper wire (size and length specified by the client) or an insert and ground connector. Both grounding systems are connected to the continuous ground bar (embedded in the concrete) with CSA specifications. C22.2 No O-M - General Requirements - Canadian Electrical Code, Part II, C22.2 No 0.4-M - Bonding and Grounding of Electrical Equipment (Protective Grounding), and C22.2 No 206-M - Lighting Poles.

The pole strengths are defined by the classes listed in the accompanying table. Poles for which no specific mounting instructions are given, may be assumed, for design and testing purposes, to be clamped at the butt over a length equal to 10 per cent of the length of the pole, plus 2 feet. When a pole is mounted in accordance with this recommendation, it shall be capable of sustaining a transverse ultimate load (applied at two feet from the tip of the pole) equal to or greater than the value shown in the table. The same parameters applied for the axial ultimate torque.

The pole design and selection process involves determining the load magnitudes and locations for the given pole height. The classes of the poles specify the minimum ultimate transverse load the pole must withstand. The loads are tabulated and ground line moment is calculated. If the client has the pole pre-engineered, we simply classify the pole by the letter designation. Alternatively, if the pole has not been designed and the client is unaware of it's strength classification, we will assist the client with design, and determine the strength classification for them.

Traditionally utilities have utilized wood poles for their systems. The poles were readily available and were inexpensive. Many of these existing wooden utility poles are aging, and the utilities are choosing to replace them with concrete poles because of their performance and durability. The accompanying table provides a useful comparison of the classes of wood versus concrete to assist in your selection.

SPECIAL FEATURES

• Long maintenance free life span.
• Resistance to insects, fire, woodpeckers, rot, and corrosion.
• Low cost direct burial design.
• Pleasing color and lines.
• Variety of sizes and strengths (class).
• Manufactured product with consistent quality and strengths.
• Hollow raceway for internal wiring and components.
• Factory made raceways, handholes, wiring apertures, and bolt holes.
• Extremely rigid product with low vibration.
• 10 year limited warranty on product.