Product of the Month – STOP/GO Traffic Light

Product of the Month – STOP/GO Traffic Light

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Get ready for MAYs Product of the Month…..IPN/002 Red/Green Traffic Light




Compact LED Stop / Go Traffic Light with high-quality wide-angle LEDs for attention grabbing signalling, and adjustable brightness.

Ideal for Loading Bay Signalling, Shutter Door Status, On-Site Traffic Management, etc.

Available in 24V ac/dc, 115Vac and 230Vac models – all voltages IN STOCK, and available for FREE NEXT DAY Delivery!




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Obstruction Lights for Cranes

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In science, you can’t create something in an instant. There is a specific process or a fixed sequence of steps in order to build or create something. This also applies in our world today especially in the field of construction. Tall structures like large buildings and towers aren’t built in a single week or month. It takes a huge amount of effort and time in order to build one. When these kinds of structures are being constructed, the need for temporary cranes arises, as they are really a great help in speeding up the building process.

So this week’s subject points to the primary purpose of cranes and as well as the obstruction lights used for them. We will briefly discuss the need of obstruction lights for cranes and as well as the specific type of obstruction lights used for them.


Cranes Main Role in Construction

A crane is a type of machine that uses one or more simple machines to create mechanical advantage and move heavy loads. It is mainly used for lifting and lowering construction materials and transporting them from one place to another. Construction of large infrastructures and buildings requires a lot of materials to be used, and most of them are so heavy that transporting them from one place to another requires a lot of time. In this case, the use of cranes speed up the transporting and lifting process in which manpower alone would not suffice. Tower cranes is one of the type of cranes that offer the best combination of height and lifting capacity and are mainly used in the construction of tall buildings.

As with any tall structure, the presence of a single or a number of cranes has the potential to cause accident and be an air navigation obstacle. As a solution to this potential danger, cranes are installed with obstruction lights for increased conspicuity especially for night time operations.

Types of Obstruction Lights Used In Cranes

Tower cranes with a height of less than 150m may require obstruction lighting only if they are considered a significant navigational hazard. However, if a tower crane’s height is 150m or more and is not near with an aerodrome, CAA (Civil Aviation Authority) requires the use of obstruction lights.

Medium Intensity Steady Red Lights (for cranes with a height of 150m and above) – This type of obstruction light is usually mounted or positioned as close as possible on the top of the crane at an intermediate level not exceeding 52 meters, and has a luminous intensity of 2000 candela. These obstruction lights are lit at night (Night is defined for civil aviation purposes as the time from half an hour after sunset until half an hour before sunrise).

Medium Intensity Steady Red Lights (for cranes between 90m to 150m high) – Cranes that are between 90 meters and 150 meters high are also equipped with medium intensity steady red lights that are positioned at the highest point and both ends of the crane jib. The lighting will be an indication of the crane’s height and as well as the radius of the crane jib. These obstruction lights are also displayed at night and are positioned to a place where it can be visible from all directions.

Low Intensity Steady Red Lights– Cranes that are 60 meters to 90 meters high are installed with low intensity steady red lights with a minimum luminous intensity of 32 candelas. They are positioned as close as possible to the highest point. And for tower cranes, they are positioned to the top of the fixed structure so that when displayed especially at night, it will be visible from all directions.

These obstruction lights are typically xenon based lamps because of its outstanding brightness which are very suitable for increased conspicuity at night compared to the other types of lamps. But there are some who prefer using LED to reduce power consumption and ensure longer operating life which reduces maintenance cost.

Cranes are one of the most essential things in the field of construction today. Imagine how long would it take for a building to be finished without this. Without the help of cranes, perhaps it may take several years and unexpected accidents may also happen. And to conclude, it seems this type of machine is truly a masterpiece.


FAA Lighting and Marking Guidelines for Structures

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Working with something without proper guidelines can be a bit troublesome. Imagine how hard it is to start from scratch without any idea on what you’re going to do. In this case, guidelines are very essential. Guidelines are statements issued by an individual or an organisation to determine a course of action. It aims to streamline particular processes according to a set routine or sound practice. It’s like a skeletal structure. It connects what you know and what might work best. It is very vital that every organisation or company has a set of guidelines for members and employees in order to achieve greater heights as well as the organisation or company’s mission and vision.

So this week’s subject is about a set of guidelines made by FAA for lighting and marking structures. We will briefly discuss about some of the major and most important recommendations of FAA regarding the marking and lighting of tall structures that may pose a threat in air navigation.


Marking Guidelines

According to Federal Aviation Administration or FAA, in order for certain structures to be conspicuous or to be easily seen or noticed by aircraft pilots during daylight hours, they have provided certain guidelines and recommendations. One way to achieve conspicuity is by painting and/or marking the structures. Recommendations on marking structures can vary and will be based depending on the geographical location, terrain features and weather patterns on the site or location of the structure, and the overall layout of the design.

Paint Colours – FAA recommended that alternate sections of aviation orange and white paint should be used on tall structures such as antenna and telecommunications tower because they provide maximum visibility through contrast in colours.

Paint Standards –FAA states that the paints should meet specific colour requirements when applied to a structure in order to be effective. Quality paint and materials should be used. It should also be compatible with the surfaces to be painted and suitable for the environmental conditions. Since all outdoor paints deteriorate with time, surfaces should be repainted as soon as the colour changes noticeably or if its effectiveness is decreased by scaling, oxidation, chipping, or layers of contamination.

Paint Patterns – FAA states that the pattern to be used should be determined by the size and shape of the structure. FAA recommends the following patterns.

      • Solid Pattern– Obstacles should be coloured aviation orange if the structure has both horizontal and vertical dimensions not exceeding 10.5 feet or 3.2m.
      • Checkerboard Pattern–Alternating rectangles of aviation orange and white are normally used on water, gas, grain storage tanks, buildings if required, and large structures exceeding 10.5 feet or 3.2m across having a horizontal dimension that is equal to or greater than the vertical dimension.
      • Alternate Bands –Alternate bands of aviation orange and white are normally used on communication towers, catenary support structures, poles, smokestacks, skeletal framework of storage tanks, coaxial cable, conduits, other cables attached to the face of a tower, and structures which appear narrow from a side view that are 10.5 feet or more across and the horizontal dimension is less than the vertical dimension.
      • Structures With a Cover or Roof – If the structure has a cover or roof, the highest orange band should be continued to cover the entire top of the structure.
      • Skeletal Structures Atop Buildings – If a flagpole, skeletal structure, or similar object is erected on top of a building, the combined height of the object and building will determine whether marking is recommended.
      • Partial Marking – If marking is recommended for only a portion of a structure because the structure is shielded by other objects or terrain, the overall height of the structure should be determined by the width of the bands. A minimum of three bands should be displayed on the upper portion of the structure.
      • Teardrop Pattern – A teardrop-striped pattern may be marked in spherical water storage tanks with a single, circular standpipe support. Alternate stripes of aviation orange and white paint should be seen in these tanks, and the stripes should extend from the top center of the tank to its supporting standpipe. The width of the stripes should be equal, and the width of each stripe at the greatest girth of the tank should not be less than 5 feet nor more than 15 feet.
      • Community Names – Stripe pattern may be broken If the community name is desired to be painted on the side of the tank. This open area should have a maximum height of 3 feet.


Markers –According to FAA, markers are used to highlight structures when it is impractical to make them conspicuous by painting. They are an addition to aviation orange and white paint and are used when additional conspicuity is required. Markers should be distinctively shaped (spherical or cylindrical) and should be recognizable in all directions from a distance of at least 4,000 feet.

Lighting Guidelines

The Federal Aviation Administration states that obstruction lighting systems will provide added conspicuity and should be used to identify structures especially at night. The recommended structure lighting will also vary and will depend on geographical location, terrain features and weather patterns on the site or location of the structure, and the overall layout of the design.

Lighting System –FAA states that obstruction lighting may be displayed on structures as aviation red obstruction lights, medium intensity flashing white obstruction lights, high intensity flashing white obstruction lights, and other lighting system and applications such as dual lighting, obstruction lights for construction equipment, for structures during construction, and for structures that are located in urban areas.

      • Aviation Red Obstruction Lights–These flashing beacons or steady burning lights are usually used during night time.
      • Medium Intensity Flashing White Obstruction Lights –Medium intensity flashing white obstruction lights can be used during day time or in night time operation with reduced intensity. This system is not normally recommended on structures 200 feet AGL (above ground level) or less. When this system is used on structures 500 feet AGL or less, other methods of marking and lighting the structure can be excluded.
      • High Intensity Flashing White Obstruction Lights–High intensity flashing white obstruction lights are recommended to be used both during day time and night time. Like medium intensity obstruction lights, they are used with reduced intensities for night time operations. When this system is used, other methods of marking and lighting the structure can be excluded.
      • Dual Lighting –This system consists of red lights and high or medium intensity flashing white lights. Red lights for night time operations while high or medium intensity flashing white lights for day time and twilight/dusk. When dual lighting system includes a medium flashing intensity lights on structures 500 feet or less, or high intensity flashing white lights on structures of any height, other methods of marking the structure can be excluded.
      • Obstruction Lights during Construction – Every time a structure’s height exceeds the height of the temporary construction equipment, two or more lights should be installed on the uppermost part of the structure. Until all permanent lights are in operation, a temporary high or medium intensity flashing white lights should be installed and operated 24 hours a day.
      • Obstruction Lights in Urban Areas– Red obstruction lights with painting or a medium intensity dual system is usually recommended when a structure is located in an urban area where there are numerous other white lights. Medium intensity lighting isn’t normally recommended on structures less than 200 feet.
      • Temporary Construction Equipment Lighting–Since construction equipment such as cranes, derricks, oil and other drilling rigs are considered structures and varies from each other, each should be considered individually and should be installed according to FAA standards.


Lighted Spherical Markers –Lighted markers are recommended for increased night conspicuity of high-voltage transmission line catenary wires near airports, heliports, across rivers, canyons, lakes, etc. The lighted marker should emit a steady-burning red light and should be installed on the highest energised line. Lighted markers should also be visible in all directions from which aircraft are likely to approach and must distinctively shaped either spherical or cylindrical, so they wouldn’t be mistaken as items that are used to convey other information.

The guidelines listed above are just one of the most important and basic guidelines provided by FAA for lighting and marking obstructions. You can always refer to AC 70/7460-1K or AC 70/7460-1L for the complete set of guidelines.

Guidelines wouldn’t only allow you to not start from scratch, but at the same time put your own ideas and creativity into something. It is never mandatory, not binding and are not enforced. So therefore, guidelines give you structure but allow freedom at the same time.