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Light poles anchor bolts are vertical metal rods. They are fabricated from steel to support and secure outdoor lighting fixtures. They come in different lengths and diameters and are welded to a base plate. This base plate is then bolted to the ground or cemented into the earth to support the light pole. The light pole serves as a structural support for the lighting fixture, which provides light to outdoor spaces.
These poles can be made of different materials, including aluminum, fiberglass, or concrete. They can be coated with different finishes to resist corrosion or weather elements. Light poles come in different heights and diameters. The fixtures at the top of the pole can also be of different shapes and sizes depending on the amount of light required.
Light poles anchor bolts come in different types, as discussed below:
Foundation-less anchor bolts
Foundation-less anchor bolts are also known as no-dig anchoring systems. They are an innovative way of installing light poles without using concrete foundations. The existing soil is used to create a foundation for the pole. These bolts have a helix at the end, which is screwed into the ground using machinery. The helix bolt will penetrate the soil layers, creating a torque tube. The soil will become compact around the bolt, creating a strong foundation that will support the pole. The process of installing foundation-less anchor bolts takes a few hours. It does not require a lot of time or heavy machinery. The light pole can be removed from the soil when it is no longer needed. This type of anchor bolt is commonly used in temporary installations.
J-Type anchor bolts
The J-type anchor bolt is a long rod with a J-shaped hook at the end. This hook resembles the letter J. It is used to secure light poles to concrete foundations. The hook end of the bolt is embedded into the concrete when it is poured. This creates a strong connection between the pole and the concrete. Installation of J bolts requires form work. The concrete has to cure before the light pole can be installed.
When it comes to features, light pole anchor bolts are available in various sizes, such as 5/8"" x 18"" and 1/2"" x 18"", which can be customized according to specific requirements. These sizes are standard in the industry and provide ease of installation and maintenance.
Another feature worth noting is the construction material. The anchor bolts are usually made of steel and are hot-dipped galvanized. Steel is known for its strength and durability, making it an ideal material for light poles. Hot-dip galvanization provides rust and corrosion resistance, which increases the lifespan of the anchor bolts. Other construction materials include carbon steel, Q235 steel, and stainless steel.
Anchor bolts for light poles come in various diameters, such as 5/8"", 3/4"", 7/8"", 1"", and 1 1/4"". The diameter of the bolt impacts the strength and load capacity, with larger bolts providing more support. The length of the light pole anchor bolts can also be customized, with some standard lengths ranging from 24"" to 96"" and above.
These anchor bolts are available in different grades to meet various industry standards. Commonly, the light pole anchor bolts are in grades 4.6, 4.8, 8.8, 10.9, and12.9. The grade indicates the strength and load-bearing capacity of the bolt, with higher grades showing more strength.
Additionally, light pole anchor bolts have a variety of finishes. Apart from hot-dip galvanized steel, other finishes include black oxide, Dacromet, galvanized, powder coating, and plain. The finishes provide protection against rust and corrosion while allowing the bolts to blend in with the aesthetic of the light pole.
Some other features include ease of installation, customizability, and maintenance.
There are various scenarios where light pole anchor bolts are essential. Here are some of them:
Public Areas and Cityscapes
City streets, plazas, parks, and recreational areas use anchor bolts for light poles. The bolts ensure the poles supporting lights are stable and provide adequate lighting.
Commercial and Industrial Zones
These anchor bolts for light poles are used in commercial and industrial areas. They ensure the poles and lamps are secure and support the lighting systems in these zones.
Universities and School Areas
These bolts are used to install and secure lighting poles in academic institutions. The anchor bolts ensure the poles are secure and stable, providing sufficient lighting for walkways, playgrounds, and other areas in learning institutions.
Event Locations and Festivals
When hosting events such as concerts, fairs, and festivals, temporary lighting systems are usually installed. These systems use anchor bolts to secure the lighting poles. The bolts ensure the lighting structures are stable and secure during the events.
Construction Sites
During building projects, temporary lighting is usually installed to ensure safety and visibility. These lights require poles, and the construction area uses anchor bolts to secure them.
Sports Facilities
Places like stadiums, arenas, and athletic fields use lighting systems to ensure sufficient illumination for events and activities. These lighting systems require poles, and anchor bolts secure them.
Residential Neighborhoods
Public streets and areas in residential neighborhoods use anchor bolts to secure lighting poles. The bolts ensure these poles are stable and secure.
Parking Lots
Cars and vehicles require sufficient lighting. Areas like parking lots use anchor bolts for light poles to ensure the poles are secure. The stability of the poles ensures adequate lighting for the parking lots.
The following are some of the factors buyers should consider when purchasing anchor bolts for light poles:
Load capacity
Each light pole carries different weights depending on the type of light fixture it has. Also, the height and material of the pole matter. Poles that can hold heavier weights require anchor bolts for light poles that have higher load capacity. Be sure to examine the load capacity of the anchor bolt before buying to ensure it can carry the light pole and any additional weight.
Environmental factors
Climate conditions play an important role in determining which anchor bolt to purchase. If the area where the pole will be installed has extreme weather conditions such as heavy rains or strong winds, consider purchasing galvanized light pole anchor bolts. These bolts have a coating that protects them from rust. Also, consider the temperature because some metals become weak in extremely cold or hot temperatures.
Soil type
The type of soil where the light pole will be installed also affects the choice of anchor bolt. If the soil is sandy or loose, use cast-in-place bolts or concrete. But if the soil is rocky or hard, use bolts that can be installed through the pole's base. For example, tension and shear light pole anchor bolts can fit in such soils.
Ease of installation
Purchasing anchor bolts that are easy to install reduces the cost of hiring an expert. In most cases, the soil conditions determine whether the light pole anchor bolts are easy to install. For example, auger and screw bolts are easy to install in loose soils but difficult in hard soils.
Length and diameter
Regulations and standards
Q1: How are anchor bolts installed?
A1: Typically, a hole is drilled into the concrete, and the bolt is inserted and cemented in place. This method is called cast-in-place. There is also the post-installed method where the bolt is screwed into the already made concrete hole.
Q2: How can one prevent rust on galvanized bolts?
A2: Although galvanized steel can resist corrosion, it is not fully rust proof. Therefore, to prevent rust, the bolt can be made with zinc or powder coated. Alternatively, dry the bolt and store it in a cool, dry place to prevent moisture.
Q3: How does the size of an anchor bolt affect lighting poles?
Larger size bolts have higher load capacity, which means they can hold more weight. This means that larger bolts can support taller lighting poles. The opposite is true for smaller anchor bolts.
Q4: Are there industry standards for anchor bolts?
A4: Yes, there are standards like ASTM F1554 that provides specifications for anchor bolts used to support lighting and other structures.
Q5: Can anchor bolts be reused?
A5: Ideally, anchor bolts are not reused. The only time they can be reused is if it has not been installed or anchored. This is because reusing the bolt will reduce its strength and load capacity.
