RESOURCES - CHAIN LINK SWING GATES

Equipment:  Socket set, hammer, come-a-longs, level and pliers.

Key Questions:

1. How do I measure for gates?
2. When will I need a sloped gate?
3. How do I measure for a sloped gate?
4. How do I install a single swing gate?
5. How do I install a double drive gate?
6. What are the most common safety obstacles to be aware of when installing gates?

How do I measure for gates?

 

When measuring gates, it is important to take multiple measurements to ensure accuracy. Measure both the top and bottom of the gate along a level plane and avoid allowing the tape to slope or angle. Maintain an accuracy of + 1/8" in your measurements. It is common to find that these dimensions are different, and typically the smaller dimension is used in constructing the gate. Be sure to communicate this information clearly in your as-built document soon after setting the posts.

Swing gates. Measure from inside to inside of gate posts.

Double drive gates. Measure from inside to inside of gate posts.

When will I need a sloped gate? 

In cases where the slope or grade between the opening is significant, a standard level gate may not be suitable as it could result in a large opening between the low side of the grade and the bottom rail of the gate. In such cases, a slope gate may be necessary, which is built to follow the slope of the grade between the opening. Slope gates must be hung on the low side of the opening to avoid bottoming-out as they open. It is important to note that sloped gates can only be single swings and cannot be double drives, as the leaf installed at the top of the slope will bottom-out when the gate is opened. However, it is crucial to verify the grade before making this determination as there is one scenario where a double drive slope gate may work. If the grade slopes down perpendicularly to the opening or drops from the gate posts to where the nose of the gate will rest in the full open position, a double drive slope gate may be feasible.

How do I measure for a slope gate? 

 

Position a rail, 2x4, or straight edge on top of the gate post on the higher side of the opening, making sure it is level across the entire opening (B). Use a level to ensure that the straight edge is completely level. Then, measure the distance from the bottom of the straight edge to the top of the footing at the gate post on the lower side of the opening (A). Measure the distance from the inside edge of the opening on one side to the inside edge of the opening on the other side (B), ensuring that the measurement is level. Finally, measure the distance along the slope of the grade from the inside edge of the opening on one side to the inside edge of the opening on the other side (C). This measurement can be plotted on the CAD to confirm its accuracy.

How do I install a single swing gate?  

To begin, review your plans or proposal to ensure that the hinge side of the gate is clearly indicated. If it is not, contact your salesman to confirm which side of the opening the gate will hinge on. Once you have determined the hinge side, double-check to ensure that you are not hanging the gate on the wrong side of the opening. If there is a slope not only from one side of the opening to the other, but also perpendicular to the opening, you may encounter difficulty with the gate fully opening or closing. In this scenario, consider discussing with the salesman the possibility of hinging the gate from the opposite side.

Once you are ready to hang the gate, follow these steps.

1. If you are using a bulldog or strap hinge, start by installing the bottom hinge as close to the ground as possible without tightening it. You may need to make further adjustments later. Install the post part of the top hinge about one foot from the top of the gate. Place the gate's bottom stub into the bottom hinge and lean the gate back against the post part of the top hinge. Install the strap around the gate frame and the hinge. Ensure that none of the hinges are supporting the gate off a tension band as the hinge can wear through it over time. Align the top of the gate with the top rail and make adjustments to the hinges before tightening them. Install the drop fork and ensure that it moves freely without encountering the in-ground sleeve as it goes up and down. When the gate is completely shut, there should be approximately a ½” clearance between the back of the drop fork and the post.
2. When using a male/female pintel hinge, start by installing the bottom male pintel hinge with the pintel up, approximately one foot from the bottom of the gate. Then, install the top male pintel hinge with pintel down, approximately one foot down from the top of the gate. This configuration will prevent anyone from lifting the gate off the hinges. Finally, install the female hinge so that it fits snugly over the pintel.

 

How do I install a double drive gate?  

To install a double swing gate, follow the same steps as a single swing gate with a few additional considerations. Note that a sloped gate cannot typically be used for a double swing gate. Pay attention to the amount of slope present in the opening as too much slope can create large gaps at the bottom of the gate. A drop rod assembly is necessary for a double swing gate. Review the plans and specifications to determine the appropriate type and installation method for the drop rod assembly. 

To install a standard double drive gate drop rod assembly:

1. Put two guides on the bottom of the drop rod below the fork, and one guide on the top above the fork.
2. Position the bottom drop rod as close to the gate bottom as possible.
3. Place the top drop rod assembly about 6 inches below the drop rod when it's extended into the ground socket.
4. Slide the third drop assembly onto the gate frame without tightening.
5. Install the ground socket at least 1 foot into the ground. If not into concrete or asphalt slab, set into a 30-inch footing. Bring the gates to a fully closed position, slide the drop rod down to leave an impression in the surface, and use the impression as a guide to install the socket.
6. Slide the drop rod into the socket. When the drop rod is fully extended into the socket, position the third guide so that the tab on the rod is entirely through the third guide to allow for a padlock. Tighten the guide.

What are the most common safety obstacles to be aware of when installing gates?

Lifting. Gates can be heavy, large, and unwieldy, so it's important to use proper lifting techniques, enlist adequate manpower, or use appropriate equipment. Due to their awkward size and weight, it's easy to strain or twist your back while handling them.

Fall Hazard. Gates pose a significant risk of falling and causing injury. It is common to lean a gate against an opening during hinge installation, but a slight breeze or accidental bump can cause the gate to fall and potentially harm the installer. To prevent this, always use a bungee cord, chain, or rope to secure the gate against the fence. When installing a cantilever gate, a bungee cord is recommended so that the gate can be moved in and away from the rollers without having to remove the cord.

Cuts. Cantilever gates have moving parts, and it's easy to accidentally catch your fingers in the roller while making adjustments.

Motorized Hazards. Motorized gates possess a significant risk of causing harm. The number of injuries caused by these gates has increased significantly over the years, leading to the development of the UL 325 Code that regulates the installation of motorized gates. When installing such gates, it's crucial to be aware of the possibility of getting caught in a roller, between a picket and post, or in the opening, among other hazards. More information on this will be provided later.