This may seem like a straight forward question but to us there are two answers for the most part, swing gates and slide gates. For our purposes, lift type gates will fall under the slide gate category.
Slide gates roll linearly on rollers of some kind.
Swing gates pivot like a house door on hinges laterally.
Double gates, either slide or swing are called bi-parting gates. These swing gates are an example of bi-parting swing gates.
You can imagine that a swing gate would require more coverage for reversing in the event that a vehicle enters the area where the gates are moving.
On the above swing gate installation, there are four in ground vehicular sensors. There is one outside the gates, one just on the inside (protects against opening onto a vehicle or closing onto one) also one just this side of the swing radius and then there is a free exit. The free exit causes the gates to open and it is just behind the photographer. That last (or first as you’re leaving this location) long distance loop, allows the gate to start opening so that the vehicle does not need to wait while the gate opens as it approaches from the inside. That long free exit is the only in ground sensor that is not required by UL325 that governs automated vehicular gate installation.
The above pdf explains loops better than I can. It’s from BD Loops, a maker of preformed in ground sensors. The below pictures are taken from their article and show the positioning of the loops relative to the driveway and to the gate in each situation.
We get a lot of questions when quoting gate operator installations. These two are the most difficult to explain. Why do I need those? On new installations it’s not that difficult to incorporate the requirements. On replacement installations, it’s a lot harder. Why do I need those, they aren’t there now? There is also, “My gates have worked fine without all that.”
It’s hard to argue with that reasoning, except to say that when we install gate operators and access controls, we try to follow the UL325-2018 (the latest at the time of this writing) and use it as our guideline. We can’t always follow it exactly, sometimes there are issues of right of way, public property, architectural elements in the driveway etc. that preclude an installation exactly as shown, but we can usually cover those types of issues with alternative equipment.
One thing to think about. If you’re planning on putting in gate operators, make sure to have the loops installed BEFORE the driveway is poured or before the pavers are installed. We can work around those times when the contractor is moving quick but it definitely is easier when we can work together.
If you’re looking to install gate operators or access controls, give us a call.
We get a lot of questions regarding gate handling during a hurricane situation.
The main one is “What do we do with our gates during a hurricane?”
There is only one right answer: “Do what works for you and hope for the best.”
Maybe we can help you make the best decision.
You need to balance security, with liability and with ability.
Not everyone can take down their gates and store them. Not many want to leave their property open especially during a natural event that they have no control over.
My first suggestion is, remove the gates and store. The second suggestion “for me” would be store slide gates in an open position secured and swing gates in a closed position secured. My last suggestion would be to secure swing gates in an open position secured and slide gates in a closed position secured. Remember, “Securing” is very subjective. I can’t tell what is best for your situation; ratchet straps, chains, cables, tie downs, nuts and bolts, steel or wood?
Putting the gates in storage leaves a property open. Depending on the storage location, it is possible that the location may become damaged.
Securing closed, leaves the possibility of the gates being damaged in a closed position making access difficult.
Leaving open but secured means leaving the property open with the gates vulnerable to damage.
There is always a possibility of gates wind loading and becoming airborne depending on gate installation, wind conditions and securing method.
The bottom line is there is no one situation that is the same and all will require determining what works for you.
I will say that the best gates I have ever installed were designed, engineered and fabricated and included inherent design qualities that took into account hurricane issues.
For whatever reason we hadn’t heard from a customer in a long time. Could have been budget issues or a change of management, not sure. I went by the customer and noted that they had removed the Red Doorking operator that we had installed. I noticed that is was still onsite and sitting off to the side getting buried in the accumulating banyan leaves. I asked what was up with it. The main thing was that they said I could have it. So, almost five years to the day after installing it I loaded it into my truck and brought it back to the shop. I washed it down and wired it up and it worked.
The red powder coat looks like it was just done. Only thing wrong I believe was that the chain was rusted. This was installed next to Biscayne Bay close to salt air and was supposed to have been lubricated regularly. I can guarantee that this gate operator, as old as it is, is better than most newly manufactured operators on the market.