Design Guide - Preparational Work
Ground levels
In EVERY case the “ground levels” have a direct effect upon the success of the system’s design and its performance.
NB. Please see “Ground levels” within the “Preparation” section of this web site for details (to be found under “Products”).
Drive surface
Loose drive surfaces, unmade roads and suspect foundations are to be carefully considered. A poor sub-base is more likely to be affected by ground swell during flood or heavy frost, with drive expansion often hindering the performance of the system.
Local site conditions are beyond the responsibility of any system installer, therefore it is the owner's responsibility to ensure all soak-aways and drainage for any vulnerable component is maintained. This is highlighted when foundation boxes for under-gate operators are installed. Soak-aways are created and tested at the point of installation and when serviced; however. silt, leaves and other forms of debris can block the soak-aways off rendering inadequate drainage and risking operator failure.
Under-gate operators, especially electrically fed units, are most vulnerable to flooding and, as such, their drainage and soak-aways need to be kept in good working order. If the installation has poor drainage or a high water table it is not recommended that under-gate operators be used.
Electrically fed under-gate operators are most vulnerable to water damage and their IP rating may suggest a limited time for immersion before the warranty is void.
Cable runs
All cable runs should be installed using externally rated cables of adequate core dimension and spare cores where possible. All ducting should be “Anti-crush” flexible duct with sweep bends, no elbows and adequate access pits for servicing.
Support structures
The support structure of the system, whether it be a gate post or barrier stand, is one of the most important parts of an automatic system. Its stability directly affects the performance and reliability of the system. For more detail please go to “Support Posts” via “Gates” within the “Products” section of this web site.
Noise transfer
Noise from any system can be transferred directly to a neighbouring property. Every site has its own characteristics and as such, there is almost no guarantee against noise transfer. However, basic steps can be taken. The first is to avoid direct or indirect connection of the gate or operator onto a neighbouring property or living accommodation. (Use free standing supports). The next is to keep all contact points away from said property. (Free stand stops and locks). Avoid the use of shared foundations or fitting close to attached items (railings, walls, fencing etc).
Local noise
Local noise is more common at night when all sound is exaggerated. Therefore the location of the system and its type need to be considered carefully, especially near living accommodation. The vehicles using the system are also likely to make some noise, together with any communications product (Audio entry link system).
Immovable objects
All sorts of immovable objects need to be considered when designing a system. Local trees with roots and branches in the way, high voltage underground cables or drains, gas pipes, street lighting cables and water mains are all commonly found. With this in mind our recommendation is to erect the support structures before completing the manufacture of the gates, in case size alterations are required.
Potential hazards
It is wise to look forward and investigate if there are any plans to carry out local changes that may affect the performance of the system. For example, high-way alterations, re-landscaping or a new driveway etc.
Customers use
Systems have found themselves problematic due to customers changing the “type of use” an entrance was designed for. It is recommended that any potential change of use be discussed with the client and options given early on. A lot can often be done to accommodate a change of use when the right system layout, equipment, ducting and cables are allowed for.
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