Concrete-based (FRC) raised access floor
TOMBO™ No. 6473
NICHIAS OMEGA FLOOR™
NICHIAS OMEGA FLOOR is a raised-access floor system made of concrete that is reinforced with rebars and laths. With good walking comfort and excellent durability, it creates a comfortable office environment.
Since its launch in 1990, the NICHIAS OMEGA FLOOR has gone on to be the choice for many when it comes to raised floors. As a raised-access floor system with excellent ease of installation and value for money, it is proudly used in a whole host of environments including large redevelopment buildings.
A high-strength panel reinforced with steel rods and laths
A sturdy, high-strength concrete panel is made by reinforcing concrete, which on its own is susceptible to cracking, with an exclusive steel rod structure and laths. This allows for stable walking equivalent to that of floor slabs.
Superior walking comfort without rattling sounds.
The panel lock system adopts a two-tiered protrusion rubber gasket to reduce creaking and hollow sounds and absorbs the rattling sounds that were a drawback of the raised access floor system. A characteristic of this is that walking becomes natural and gentle, which reduces the burden on the feet of office workers.
A raised access floor system which boasts excellent cost performance.
Offers various superior properties at low cost. Contributing to office environment creation with economic efficiency in mind.
|Type||Type||Design concentrated load
|Weight of system
(kg/m2) Note 1
|Weight of panel
|M300A||3, 000||(500 mm finished module)
|Angular part: 31.5
(Center of the sides: 30)Note 3
|HGNote 2||5, 000||(500 mm finished module)
|Angular part: 33
(Center of the sides: 31.5)Note 3
Note 2: OMEGA FLOOR HG is a made-to-order product. As restrictions may arise in terms of quantity and delivery date, please contact us before placing an order.
Note 3: The thickness of the center of the side is a guide.
Note 4: Color inconsistencies and small air bubbles may occur on the surface, but this is not a problem in terms of the product’s performance.
*Nichias offers made-to-order products for pedestals with finished floor heights from 300 to 1, 000 mm. Please contact us for specifications and details.
Support with 4 static load test supports and apply a Φ50 load using a load tester.
Static Load Test
|Type||Loading point||Maximum load||Deformation|
|M300A||Panel center||9, 000 or more||2 mm or less at 3, 000 N|
|HG||10, 000 or more||2 mm or less at 5, 000 N|
Support with 4 pedestals and apply a φ50 load using a load tester.
Static Load Test (test method: JIS A 1450-2015)
|Type||Specified load||Loading point||Deformation at the time of a predetermined load||Residual deformation|
|M300A||3000N||Weakest partNote 1||5 mm or less||3 mm or less|
Note 1: The weakest parts are the parts at which deformation is largest when a predetermined load is applied and the part where the residual deformation is largest (these weakest parts may be the exact same part).
Rolling Load Test
Apply the predetermined load to the urethane-coated caster (diameter of 150 mm, width of 40 mm, and hardness of 85 HS or more) and run the test.
Rolling Load Test (test method: JIS A 1450-2015)
|Type||Specified load||Load position||Visual check for damage||Residual deformation|
|M300A||1000N||Weakest partNote 1||None||3 mm or less|
Note 1: The weakest part is the part with the largest amount of deformation from the rolling load.
Drop a 30kg sandbag (bottom surface: φ220) from 250 mm.
Impact Test (test method: JIS A 1450-2015)
|Type||Impacted specimen||Impact height||Impact point||Visual check for damage||Residual deformation|
|250mm||Weakest partNote 1||None||3 mm or less|
Note 1: The weakest part is the part with the largest amount of deformation from the shock.
Leakage Resistance Test
The resistance values of the panel top surface and ground are measured. (Measurement conditions: voltage = 500 V load, temperature = 20±5°C, humidity = 30±10% RH)
Leakage Resistance Test (test method: JIS A 1450-2015)
|Type||Panel surface||Leakage resistance (Ω)|
|M300A||No surface finishing materials||1 × 106 or more|
A measurement device stipulated in JIS A 1455 is used and the maximum electrification parts of the panel top surface and ground and the half-life are measured.
The calculation of the U value is done according to the formula stipulated in JIS A 1455.
Electrification Test (test method: JIS A 1450-2015)
|Type||Panel surface||U value|
|M300A||No surface finishing materials||0.6 or more|
The time until it burns at the bottom of the panel and the panel flames go out when the fuel burns out is measured.
Combustion Test (test method: JIS A 1450-2015)
The 350kg weight is placed on the top part of the test specimen and it is subject to vibrations with three-wave, 2 Hz sine waves.
*The specifications of the pedestal vary with the movable load.
Vibration Test (test method: JIS A 1450-2015)
|Type||Mass of the weight||Assessment|
|M300A||200kg||No panels shall
|Application Example||Strength of Underfloor|
|150kg||If assuming the installation of a lightweight fixture
(a general office, etc.)
|200kg||If assuming the installation of a general bookshelf and fixture
(a general office, etc.)
|350kg||If assuming the installation of a heavy object including equipment such as a large bookshelf and small server (heavy duty zone)
*As per the Japan Access Floor Association (raised-access floor performance assessment)
Do not drop heavy objects or apply excessive impact. Doing so could damage the panels or cause them to break off.
Do not machine the panels or pedestals without permission. Doing so will weaken them and could damage the panels or cause them to break off.
When carrying in, moving, or installing equipment, cover the stipulated areas and carry out the work at a calm pace. The panels may become damaged by subjecting them to an excessive load or impact.
When installing the equipment, make sure that the installation area is larger than φ50 mm and the load applied to one panel is less than the permissible concentrated load.
Do not leave the panels removed for wiring work, etc. unattended. Doing so could cause a visiting third party to be unexpectedly injured. Take safety measures such as sectioning off the removed panels, etc.
Do not use the floor panels without a cover lid. Doing so could cause an unexpected injury such as one’s foot entering the uncovered hole.
When handling panels and pedestals, wear gloves to prevent being cut.
When laying panels, be careful not to get your hands caught between the panels.
Do not carry panels while holding them with the panel lifter used when attaching/detaching the panels. The panels may fall and cause an unexpected injury.
Wear protective gloves and a dust mask when machining the panels or cutting the clipboard after checking with Nichias that it is okay to do so.
Do not use for applications other than raised access floor systems.
Do not use the panels in an uncovered state, as doing so may cause the panels to chip or scrape away, wear or stains due to aging, or an accident in which someone trips or sprains their ankle.
If the panel joints are separated by gaps, finishing with a long sheet may cause the joints to stand out. Do not use long sheets.
If the panel joints are separated by gaps, finishing with loose-laying PVC tiles may cause the joints to stand out. Do not use loose-laying PVC tiles.
If the room is not used for a long time after the panels are installed, condensation may occur under the panels. Ventilate the room and under the floor regularly.
If the room is not used for a long time after the particle board is installed, dew condensation may occur and the board may swell or mold may form. Regularly ventilate the room or under the floor to prevent this from happening.
As the surface may become dry and shrink, do not leave the panels for more than 6 months without applying the surface finishing materials.
For equipment that is repeatedly subject to loads or vibrations such as heavy-duty mobile racks and rotary presses, mount it on a frame or the like directly on a concrete slab, and isolate it from the panels.
When installing a door on panels, make sure to reinforce the panels with the reinforcement pedestals because the panels may suffer deflection, affecting the ability to lift them up and/or place them back.
If you install partitions or doors on the panels, the panels may suffer deflection and cause problems. If you require reinforcement for the panels, etc., please contact Nichias.
Follow the instructions in the catalog when installing.
Consider attaching and detaching the panels when wiring, and lay the carpet in a block-like pattern with each piece deviating by 70 mm or more.
When laying a tile carpet, an unpleasant smell may be generated by the reaction between the rubber plasticizing agent on the back of the carpet and the alkaline water contained in the panel. Ventilate the area sufficiently after laying down the carpet.
Use approximately 30 to 60 g/m2 of carpet bond when installing the tiled carpet. If you apply too much bond, it may get into the joints of the panels, making them difficult to lift up and/or put back, or cause a creaking sound to occur from the panels. Also, the carpet may get damaged when attaching or detaching the panels.
When storing panels, pedestals, and auxiliary materials, store them somewhere where they will not be exposed to water. Exposure to water may cause rust to develop.
When transporting heavy objects or construction materials by trolley, to avoid applying excessive local loads, lay down wooden board coverings along the route that the trolley will pass according to the criteria shown in the table below.
|Heavy items||Covering method|
|300 kg or less||Around 2 mm of plywood board or plastic sheet coverings|
|Over 300 kg, 500 kg or less||9 mm wooden material covering|
|Over 500 kg, 1000 kg or less||21 mm wooden material covering|
Border panels for flow lines such as passages and entrances/exits should be fixed in place with screws.
Make sure to fix the stopper screws on the pedestals to prevent the panels from rattling.
Secure a gap of about 2 mm so that the order-made panels near the wall do not rub against the wall. In corridors and other walkways, take measures to prevent displacement such as screwing and installing backup materials.
Precautions for Carrying In and Installing Heavy Equipment
When moving or transporting heavy objects, to avoid applying excessive local loads, lay down wooden board coverings, such as the ones indicated in the table above, along the route.
Equipment which may fall over should be fixed to the concrete slab or a durable wall and not fixed to the panel or pedestals.
If a load is concentrated on one panel, lay an iron plate or frame on the panel to spread the load.
Precautions when Opening and Closing the Panels Such as When Doing Wiring Work
When removing a panel, install the lock parts (plate and base) and cover lid back as they were beforehand.
When removing a panel, return the panel to its original orientation to prevent rattling.
Please contact one of our sales representatives when a modification or replacement of floor materials is required due to a layout change or wiring work.
As part of daily maintenance for the tile carpet, clean with a large industrial vacuum cleaner or household vacuum cleaner.
As part of periodic maintenance, conduct powder cleaning.
Make sure that water or chemicals are not spilled on the panels.
Ask a cleaning company or the surface finishing material manufacturer for methods on powder cleaning and stain removal.
Panels, pedestals, and auxiliary materials should be classified as general industrial waste and should be treated appropriately in accordance with the Waste Disposal and Public Cleansing Law.
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- Name of products with "™" are trademarks of NICHIAS Corporation.
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