Electronic Gate Systems would like
to share our experience in an effort to help customers with their
automated vehicle gate project.
Some answers will help to focus
the design and scope of the project
- What are the main reasons for a
vehicle gate, access control system ?
- Beauty, image, fit into the house
design
- Keep children and pet safely on the
property
- Keep out deer
- Keep out unauthorized visitors
- Other
- What are the design considerations,
constraints?
- Swing or slide gate (Is the area for
the gate flat?)
- Columns or posts
- Gate construction and design (wood
vs. ornamental iron)
- Major foliage, landscaping
considerations/constraints
- Budget/schedule considerations
- What other home projects is this
project competing with; what is its priority; what budget is
available?
- Is there an important time period
during which the project must be completed?
- Can the project be completed in one
or more phases or all at once?
- How will visitors gain access to the
property?
- When residents are home
- Regular, authorized visitor (house
cleaners, car pool pick-up, etc.)
- One-time visitors (UPS package
delivery, meter reader, Girl Scout selling cookies)
- When residents are not home
- House cleaner, etc.
- Authorized UPS delivery
-
Emergency vehicles
Hiring a Contractor for your
project
Be wary of unusually cheap quotes, because in a market where base steel
prices are very high, the only compromise they can make in order to make a
margin is on the quality
and installation.
The Proposal
A good proposal should clearly address most aspects of the product and
installation, including the following:
- Detailed description and specification of materials to be utilized in
the manufacture of the products
- Paint finishes type and detail of color
- Site clean up plan
- Responsible party for supplying power and communication lines
- Hidden conditions clause, i.e., extra costs associated with the
discovery of unsuitable building work conditions, buried boulders, tree
roots, utility lines, or unsupportive soil conditions.
- Full terms and conditions
Analyzing and Comparing Proposals
Start with a well established and reputable company. Obtain a proposal
that is all-inclusive and thereafter have other contractors bid on the
same items. Compare "apples with apples". This is a good way of leveling
the playing field. Please remember that the lowest proposal is not
necessarily the best proposal. In fact, it will more likely than not offer
the worst value proposition.
Understanding the Complete Proposal
A complete proposal addresses a full basket of items that are essential to
ensure optimum value, quality and safety. All these items will be
explained in the following paragraphs:
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Product Drawing
The purpose of a drawing is to see the complete product as it would appear
when finished. It should include any posts, columns, and lighting. It is
also advisable to see the side-to-side slope of the road, as it would
appear under the gate. This is especially important if you have a steep
slope to contend with. For gates, a drawing is usually required when
obtaining a permit.
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Site Plan
The site plan is important for showing the location of both a
driveway gate and operating equipment. A good plan will show
where all the wiring is buried and is useful for future
repairs and any excavating you may want to do later. A site
plan is usually required when obtaining a permit.
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Column Footings
Concrete footings are required if columns are to be installed. Column
footings need to be installed prior to the gate installation. Footing
size is determined by column size and soil condition. If the soil is
firm and stable the footing must be at least 3 foot down and be at least
12 inches wider than the proposed column on all sides. If the soil is
loamy, clay, or sandy then go shallow and wider on the footings. In certain cases, it may be necessary to connect both footings
together across the driveway with a grade beam.
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Underground Services
Make sure that you call for an underground utilities check before
excavating. In most cases this should remove liability if the contractor
cuts through a buried utility line. The various utilities should be
contacted in this regard to come to your site and mark all underground
utilities locations.
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Posts
Steel posts can either flank the gate on each side or be internal steel
"skeletons" that are imbedded in masonry columns. The skeleton sits in the
middle of the column footing and is used to hold the hinges, gate
operators, equipment vaults, and lighting.
Gate posts for swing type gates depend on the size and weight of the
individual gate leaf and range from at least 2" x 2" to 12" x 12" and must be set at least between
36 and 60 inches below ground.
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Grading
Some sites are level. Those that are not may need grading. Water flow
should be considered when grading. All added road base has to be
compacted.
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Gates
Heavier gates have a tendency to last longer. Where hollow tubing is
used it should be of a heavy gauge. The gate must have weep holes to allow trapped moisture to vent or
the gate will rust from the inside out.
All weld slag must be removed before painting or powder coating. Removing
slag is a tedious and time consuming process, which, if not done
thoroughly, will be a major detriment to the longevity of a gate. Since
paint does not get into all the tiny spaces surrounding the slag, it later
falls off leaving a bare spot where rust begins. You can tell good
workmanship by how smooth the finish feels when you run your hand over it.
Check the areas around welds, and check several gates built by your
prospective contractor for this point of quality.
Powder coated finishes are superior to enamel and when correctly applied
can last up to 15 years. A good enamel paint job will last up to six
years. Single coat paint jobs, also called primer paints, last only two
years at best and should be avoided. Hot Dip Galvanizing should be
considered if you live near salt water. You may powder coat over Hot Dip
Galvanizing if you prefer a different color, however, the galvanizing
should be allowed to weather for six months prior to the application of
any type of painting. Electro Galvanizing can be powder coated
immediately; however, this process will not offer the same protection as
Hot Dip Galvanizing.
Electrical and Communication Lines
National electrical code calls for electrical lines to be buried at
least 18 inches underground. Unfortunately we often find these more
shallowly placed. It is not a pleasant experience if you hit a power line.
Even if you don’t get shocked you will endure a costly underground repair.
Power and communication lines should be spaced at least 6 inches
apart. This will prevent noise being carried by your telephone or intercom
system. The conduit should be larger than necessary for easy wire pulls
and future repair. The wire should be large enough to deliver the needed
current after line loss. Line loss is a voltage drop that happens whenever
power is delivered over long runs. Almost all underground conduits fill up
with water. Use wire with appropriate insulation to hold up to these
prolonged conditions.
Most single gates (one operator or motor) need 15 amps at 220 volts AC.
Consult an electrician before laying long runs underground so that you get
the right gauge of wire. Inspection boxes should be installed at least
every 100 feet. Direct burial cable installed in conduit should not be used.
High quality communication wire, preferably shielded cable should be
used in all connections. Not telephone wire.
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Entry System
There are many entry systems on the market, many of which are good, though
some are more difficult to program than others. Check with your installer
on ease of programming. Determine whether you need a simple keypad or one
that communicates through your telephone system. Bear in mind that there
is a large cost difference between the two. Card reader units are used
more in industrial applications and multiple dwelling communities. Make
sure the "Goose Neck" or pedestal mount is sturdy and well located. The
unit should not move when you use the keypad.
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Emergency Gate & Lock
We recommend that you have an emergency pedestrian gate and Knox lock fitted to
allow emergency crews to enter your property without damaging your gate or
automation equipment. Make sure this item is not left out of your
installation, only to find that you have to install it later.
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Gate Operator
There are several ways to operate a gate. Swing gates can use three types
of operators. A swing arm operator, which is a box, that sits off to the
side and has an arm extending to the gate. A ram arm is located on the
gate and post and uses either a hydraulic piston or a jackscrew-operated
piston. Underground operators are located by the hinge and operate the
gate from below ground.
The simplest to service and install is the swing arm operator. The
advantage of the ram is that it is smaller and takes up less space. The
underground operator is the most expensive but is very attractive in that
you see no equipment. The swing arm is usually the fastest of the
operators. The swing arm units also handle a gate very smoothly and slow
down toward the end of each cycle.
Slide gate operators are commonly installed at the end of the gate in the
closed position but can also be installed by the end of the gate in the
open position. A chain is attached across the gate near the bottom and
passes through the operator, which shuttles it back and forth. In the end
of the gate/open position you do not see the chain or any operating
equipment near the gate. Sliding gates are more hazardous than swing gates
and should be equipped with appropriate safety devices.
Either type of gate operator is available in 110V AC or 12V DC operated. A
DC powered gate can run off a low voltage transformer or solar panel.
Solar installation requires more maintenance than an AC powered system.
Solar should be used only when it is not economical to bring AC to the
gate. Quality operating equipment will last from 12 to 20 years before it
needs to be replaced, depending on its proper use and good maintenance.
Most installations use a built-in timer that closes the gate after a set
period of time.
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Exit Loop
An exit loop is wire that is either buried beneath the driveway or cut
into the concrete or asphalt. It is located behind the gate. Locating it
far from the gate is best. A vehicle triggers the loop, which acts like a
big metal detector and opens the gate, allowing the vehicle to exit.
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Safety Loops and Photoelectric Sensors (Eyes)
"Safety" loops are buried or cut in the pavement in front and behind a
gate. They prevent the gate from closing on a vehicle in its path should
it stay there past the "momentary open" timer setting.
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Safety Loops are a weak spot in many gate systems. Many installers
do not include safety loops in their bids, this should not be the case
due to that fact the gate can cause damage, a lot of damage.
Photoelectric sensors (eyes) and safety loops are
often used in combination with one another. A single photoelectric sensor
may be used on a slide gate to hold the gate open in case a vehicle stays
too long in its path or reverses if a vehicle enters its path as it is
closing. Other "entrapment zones" created by the gate, i.e., sliding
behind a fence or wall, also requires a photoelectric sensor.
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Lighting
Lighting is often located either on top of gate posts or on top or on the
front of columns. The best way to control lighting is with a combination
timer-photocell. The timer is set to activate in the afternoon and has a
photocell located between it and the lights. Once the timer is activated,
the photocell prevents the lights from coming on until dusk. The timer
shuts off the lights at a predetermined time, i.e., midnight. In this way
the lighting tracks the seasons and you do not have to keep adjusting the
timer.
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Site Cleanup
A project is not finished until the job site is thoroughly cleaned and
restored to its former state. Special circumstances should be discussed,
i.e., hauling away certain debris. It should be made clear whose
responsibility this is. Contractors should always perform ordinary clean
up at the end of each day.
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Conclusion
You are more likely to be satisfied with your purchase and the process of
getting it manufactured and installed to your requirements, if your
contractor can prove his credentials, demonstrate his expertise and
knowledge, and focus on value rather than price.
Our process and typical order of events
- Call Electronic Gate Systems
(EGS) to meet on site and discuss the project.
- Agree with EGS on scope of project and
scope of work you would like EGS to perform. Confirm other contractors
(if any) with whom EGS needs to coordinate.
- EGS prepares a proposal quotation.
- Discuss, refine, adjust, and finalize
quotation. Quote signed by homeowner or representative. Deposit paid.
- EGS (or whoever is providing the gate
and posts/columns) provides elevation shop drawings of the gate.
Refine if necessary. Drawings signed by the homeowner.
- Site preparation work including some
or all of the following:
- Final site grading
- Set posts/column
- Run electrical and phone wiring
- Vehicle detection loops installed
- Concrete pads poured for gate
operator mounting
- Post for phone entry system
installed
- Once gate posts/column are in place,
final measurements taken for gates. Gate fabrication and powder
coating takes place.
- Gate(s) installed.
- Gate automation equipment, safety
equipment and phone entry/intercom system installed.
- Final touch-up and homeowner walk
through and sign-off. Preventive maintenance agreement signed.
Training on use and upkeep of gate system and what to do in case of no
power or reliability issue.
- Final invoicing and payment.
Regulations and permits
- UL 325 and ASTM F2200 safety standards
Since 2000, there have been standards in place established by
Underwriter Laboratories that establish minimum requirements for safe
automatic vehicle gate operators and their installation. Since 2002
there have been additional standards established by industry groups
that set minimum requirements for the safe automated gates. Because
these are thoughtful standards and are well known, it is imperative in
Bay Cities Automatic Gates’ view that any new installed system fully
complies. Please review these standards below in the UL 325 section.
- Emergency Vehicle Access
Each local fire department has its particular rules about how
emergency vehicles will gain access to a property with an automatic
vehicle gate in the event of an emergency. When we install the gate,
system we will make sure it complies with these local requirements. In
most cases in the greater San Francisco Bay Area, this means
installing a Knox Switch. This is a key switch with a red “Emergency”
sticker above it to which only the local fire department has the key.
When fire department personnel need to gain access to the property,
they will turn the key switch and the gate will hold open until they
re-turn the switch back to its non-emergency orientation.
- Planning permits
Often planning guidelines require certain rules be followed that
govern the siting and design of a gate system. These rules may limit:
- The height of the gate.
- The distance the gate must be from the road
or sidewalk.
- The design of the gate.
- The depth to which the gate swing post must
be set.
- Building permits
Often no building permits are required. However, depending on the
jurisdiction and scope of the project, electrical permits may be
required and the electrical contractor will need to have their work
signed-off before finalizing their work. Some jurisdictions also
require permits for the installation of columns or even gate posts.
There is a charge for each permit.
Ongoing maintenance, changes, repairs, upgrades
- Preventative Maintenance (PM)
It is important to keep your automated gate system in good repair for
its reliability and its safety and its durability. We recommend at
least annual Preventive Maintenance checks by a professional. When EGS
performs PM’s, we check the mechanical operation of the gate and
operator and lubricate and adjust it as needed. We also check the
phone entry system, check the performance of the transmitters, the
batteries and check the performance safety devices including vehicle
detection loops, photo eyes, reversing edges and the inherent safety
of the operator itself. This is also a good chance to address
homeowner questions and issues.
- System changes
If you would like to change the time an automatic gate closes, the
codes in the phone entry system, or the range of the transmitters give
us a call. We may be able to walk you through how to do these on your
own. If not we can schedule a visit or address these items as part of
a regularly scheduled preventive maintenance.
- Repairs
Inevitably, the gate system will need repairs as it grows old or
someone bumps the gate with their vehicle. In any case, please call
us and we will come out and make the necessary repairs. In many cases,
we can do this in one quick visit. If the damage or problem is more
extensive, we will give you an estimate and seek your approval before
completing the work.
- Upgrades
After a period of time, customers may want to upgrade their system.
They may want to add CCTV cameras, a phone entry system, vehicle
detection loops, hands free vehicle ID or other capabilities. EGS is
happy to discuss upgrade ideas and provide a proposal for the best
solution.
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