Accessories
Finials are constructed of cast aluminum and welded to pole cap. Standard Hapco finials include – F0001, F0002, F0004, F0005, F0007, and F0010. Custom finials are available. Contact Hapco for additional information.
Standard Plant holders are constructed of aluminum and mounted via stainless steel hardware and rivnuts or tapped rods (depending on model). Standard Plant Holders include – HOLD12001-Single, HOLD12002-Double, HOLD12101–Single, HOLD12102-Double, HOLD12201-Single, HOLD12202-Double, HOLD12301-Single, HOLD12302-Double, HOLD12401-Single, HOLD12402-Double. Customer must specify orientation of plant holder during ordering.
HOLD12102 – Double
Plant Holder
HOLD12202 – Double
Plant Holder
HOLD12002 – Double
Plant Holder
HOLD12302 – Double
Plant Holder
HOLD12402 – Double
Plant Holder
Hapco is the industry-recognized pioneer on the research of wind induced vibration in aluminum poles. Our decades of research and testing has led to several patents in this category, giving Hapco Engineers the knowledge and background to assure our customers the safest, longest lasting pole designs.
We have learned from experience that poles supporting certain types of post-top mounted fixtures are more susceptible to first and second mode vibration. The rectangular or “shoebox” shaped luminaires, for example, seem to encourage second mode vibration, while more aerodynamic lightweight fixtures encourage first mode vibration. Any oscillation should be dealt with as soon as it becomes apparent to prevent damage to the pole or luminaire.
Hapco Damper Solutions
To minimize the effects of first or second mode vibration, Hapco has developed dampers which very effectively quell wind induced vibration of lighting poles.Free Vibration Test Curves
Free Vibration of Test Pole with No Added Damping
Free Vibration of Test Pole with Impact Damper
To minimize the effects of first or second mode vibration, Hapco has developed dampers which very effectively quell wind induced vibration of lighting poles.
Free Vibration of Test Pole with No Added Damping
Free Vibration of Test Pole with Impact Damper
First Mode Damper
Hapco’s patented First Mode Vibration Damper is field installed at the top of square poles. This damper very effectively reduces first mode vibration of square lighting poles. Due to potential vibration fatigue issues that can be associated with moderate wind conditions, First Mode Dampers are recommended for square poles with mounting heights greater than 25’ and for square poles with light loading fixtures less than 2.0 EPA. Fatigue related pole failures are not an indication of substandard material, workmanship or design of the pole and is not covered under Hapco’s standard warranty.
Hapco’s patented First Mode Vibration Damper is field installed at the top of square poles. This damper very effectively reduces first mode vibration of square lighting poles. Due to potential vibration fatigue issues that can be associated with moderate wind conditions, First Mode Dampers are recommended for square poles with mounting heights greater than 25’ and for square poles with light loading fixtures less than 2.0 EPA. Fatigue related pole failures are not an indication of substandard material, workmanship or design of the pole and is not covered under Hapco’s standard warranty.
*Contact factory for First Mode Dampers for use on round poles.
U.S. Patent No. 7871186
Second Mode Damper
The Hapco Second Mode Damper was awarded the industry’s first patent in the vibration damping category in 1972. It is attached to the pole at approximately the midpoint of the pole, and can be factory bolted inside the pole or field mounted on the inside or outside of an existing pole.
The Hapco Second Mode Damper was awarded the industry’s first patent in the vibration damping category in 1972. It is attached to the pole at approximately the midpoint of the pole, and can be factory bolted inside the pole or field mounted on the inside or outside of an existing pole.
Based on past experience, some Hapco poles include factory-installed Second Mode Vibration Dampers as a standard component. If the poles you intend to order are to be bridge mounted, used as camera poles, or may be subject to unusual site conditions, wide open terrain, steady or high energy prevailing winds, or other site conditions as mentioned, please make Hapco aware of these conditions. Or, if your installed poles are exhibiting oscillation, contact Hapco to pursue a damping solution that may include installing a Hapco Second Mode Damper on the poles.
Locations with high average wind speeds are more prone to pole vibration problems than locations with high maximum wind speeds. Areas of high average wind speeds can be identified on the U.S. Department of Energy Residential Scale 30 Meter Wind Map which can be accessed at the U.S. Department of Energy website.
Catalog No. 53185
Banded to Shaft
(Field Mounted)
Second Mode
Catalog No. 53373
Bolded Inside Shaft
(Factory Bolted)
Second Mode
Catalog No. 53884
Bolded Inside Shaft
(Field Mounted)
Second Mode
Reinforced Handholes
Standard handhole modifications are detailed below.
Custom reinforced handhole options may be available
(contact Hapco for additional information).
This industry-standard handhole size is included as a standard in many of the poles in this catalog. The opening is oval in shape and measures 4” x 6”, with the major dimension along the vertical axis. The hole in the shaft wall is reinforced with a frame of aluminum alloy 356-T6, which projects slightly through the wall and is completely joined to the shaft with a fillet weld, the minimum size of which is 5/16”. The opening is protected by a snug-fitting cover attached by means of two stainless steel hex head screws. The external contour of the reinforcing frame and cover, although projecting slightly for sound welding, is curved to conform to the roundness of the shaft. The cover has a surface finish which is comparable to that of the shaft. The standard location of the handhole is centered 18” above the bottom of the shaft and will be located 90 degrees clockwise from the plane of the bracket, as viewed from above.
4″ x 6″ Reinforced Handhole
This industry-standard handhole size is included as a standard in many Hapco poles. The opening is oval in shape and measures 4” x 8”, with the major dimension along the vertical axis. The hole in the shaft wall is reinforced with a frame of aluminum alloy 356-T6, which projects slightly through the wall and is completely joined to the shaft with a fillet weld, the minimum size of which is 5/16”. The opening is protected by a snug-fitting cover attached by means of two stainless steel hex head screws. The external contour of the reinforcing frame and cover, although projecting slightly for sound welding, is curved to conform to the roundness of the shaft. The cover has a surface finish which is comparable to that of the shaft. The standard location of the handhole is centered 18” above the bottom of the shaft and will be located 90 degrees clockwise from the plane of the bracket, as viewed from above. Note: This size handhole cannot be furnished with poles having a shaft diameter less than 7”.
4″ x 8″ Reinforced Handhole
This industry-standard handhole size is included as a standard in many Hapco poles. The opening is oval in shape and measures 3” x 5”, with the major dimension along the vertical axis. The hole in the shaft wall is reinforced with a frame of aluminum alloy 356-T6, which projects slightly through the wall and is fastened to the shaft by two fillet welds, the minimum size of which is 5/16”. The opening is protected by a snug-fitting cover attached by means of two stainless steel hex head screws. The external contour of the reinforcing frame and cover, although projecting slightly for sound welding, is curved to conform to the roundness of the shaft. The cover has a surface finish which is comparable to that of the shaft. The standard location of the handhole is centered 18” above the bottom of the shaft and will be located 90 degrees clockwise from the plane of the bracket, as viewed from above. Note: This size handhole may be used on 5” and 6” base diameter poles only.
3″ x 5″ Reinforced Handhole
This handhole may be specified for use on 6” diameter poles only. The opening is oval in shape and measures 4” x 7”, with the major dimension along the vertical axis. The hole in the shaft wall is reinforced with a frame of aluminum alloy 356-T6, which projects slightly through the wall and is fastened to the shaft by two fillet welds, the minimum size of which is 5/16”. The opening is protected by a snug-fitting cover attached by means of two stainless steel hex head screws. The external contour of the reinforcing frame and cover, although projecting slightly for sound welding, is curved to conform to the roundness of the shaft. The cover has a surface finish which is comparable to that of the shaft. The standard location of the handhole is centered 18” above the bottom of the shaft and will be located 90 degrees clockwise from the plane of the bracket, as viewed from above. Note: This handhole may also be specified with a flush appearance.
4″ x 7″ Reinforced Handhole
This handhole may be specified for use on 7” diameter poles only. The opening is oval in shape and measures 4” x 9”, with the major dimension along the vertical axis. The hole in the shaft wall is reinforced with a frame of aluminum alloy 356-T6, which projects slightly through the wall and is fastened to the shaft by two fillet welds, the minimum size of which is 5/16”. The opening is protected by a snug-fitting cover attached by means of two stainless steel hex head screws. The external contour of the reinforcing frame and cover, although projecting slightly for sound welding, is curved to conform to the roundness of the shaft. The cover has a surface finish which is comparable to that of the shaft. The standard location of the handhole is centered 18” above the bottom of the shaft and will be located 90 degrees clockwise from the plane of the bracket, as viewed from above. Note: This handhole may also be specified with a flush appearance.
4″ x 9″ Reinforced Handhole
This handhole may be specified for use on 8” diameter and greater poles only. The opening is oval in shape and measures 5” x 9”, with the major dimension along the vertical axis. The hole in the shaft wall is reinforced with a frame of aluminum alloy 356-T6, which projects slightly through the wall and is fastened to the shaft by two fillet welds, the minimum size of which is 5/16”. The opening is protected by a snug-fitting cover attached by means of two stainless steel hex head screws. The external contour of the reinforcing frame and cover, although projecting slightly for sound welding, is curved to conform to the roundness of the shaft. The cover has a surface finish which is comparable to that of the shaft. The standard location of the handhole is centered 18” above the bottom of the shaft and will be located 90 degrees clockwise from the plane of the bracket, as viewed from above. Note: This handhole may also be specified with a flush appearance.
5″ x 9″ Reinforced Handhole
Unreinforced Handholes
Standard unreinforced handhole modifications. Custom unreinforced handhole options may be available (contact Hapco for additional information).
This is a 3” x 5” oval hole cut in the pole shaft, with the major dimension along the vertical axis. It is provided with a curved cover to fit the exterior surface of the pole. The cover is attached with two self-tapping stainless steel Phillips-head screws. It is used in applications where strength requirements permit, such as in pedestal poles. The center of the handhole is usually 18” above the ground line.
3″ X 5″ Unreinforced Handhole
This is a 2″ x 4″ oval hole cut in the pole shaft, with the major dimension along the vertical axis. It is provided with a curved cover to fit the exterior surface of the pole. The cover is attached with two self-tapping stainless steel Phillips-head screws. It is used in applications where strength requirements permit, such as in pedestal poles. The center of the handhole is usually 18″ above the ground line.
2″ x 4″ Unreinforced Handhole
Receptacle Outlets Boxes are available with and without receptacles to provide current for external circuits.
The Receptacle Outlet is an assembly similar in size and dimension to the standard “FS” outlet box. It is made of cast-aluminum Alloy 43 and is completely welded to the shaft around the perimeter of the box. When ordered without the receptacle, the Modification No. 183 box is furnished with a blank cover attached with four machine screws.
Receptacle Outlet Box Only
Without Receptacle
Modification No. 185 contains a gasketed cover attached to the box with two machine screws. It incorporates a spring-actuated access door and a double three-wire, G.F.C.I. receptacle rated at 20 amperes, 125 volts, weather resistant (WR) rated and UL approved.
Receptacle Outlet Box
With Duplex G.F.C.I. Receptacle
Slipfitter Tenon (for Brackets)
Tenons are available for luminaires which cannot be used with the standard Hapco 2″ pipe-size tenon. The 1 1/4″ pipe-size tenon is 6″ long and is welded into the end of the bracket arm with a circumferential weld. Custom tenon options are available (contact Hapco for additional information).
Tenons are available for luminaires which cannot be used with the standard Hapco 2″ pipe-size tenon. The 1 1/4″ pipe-size tenon is 6″ long and is welded into the end of the bracket arm with a circumferential weld. Custom tenon options are available (contact Hapco for additional information).
1-1/4” Pipe-Size Slipfitter Tenon
Standard SS33000 and SB34000 Sign brackets are constructed of aluminum and are available for most standard size signs. Sign brackets attach via stainless steel hardware and rivnuts or tapped rods (depending on model). Attachment revisions must be installed at the factory during the manufacturing process, therefore, sign brackets must be specified at the time an order is placed. Customer must also specify bracket orientation.
Street Sign Bracket
Sign Bracket
SBC25001 One Piece & SBC25002 Two Piece Spun Base covers are constructed of Aluminum.
Spun covers cannot be used in breakaway designed poles.
Spun covers cannot be used in breakaway designed poles.
SBC26002 Two Piece base covers are constructed of aluminum. Covers are available for every size of base flange.
SBC25002 – Two Piece
Spun Base Cover – Round Poles
Base Cover – Square Poles
When specifying Pole Accessories, it is important to provide Hapco the correct design orientation. This diagram provides the degree specification of accessories located at various positions on the pole relative to the pole door.
