w w w . s i n g a p o r e i n t e r i o r . c o m



*1. Floor Construction
*2. Substructures
*3. Pedestals
*4. Stringers
*5. Fire Barriers
*6. Air Segregation Baffles
*7. Panels
*8. Coverings
*9. Technical Characteristics
* *9.1 Fire Resistance
* *9.2 Anti-static Performance
* *9.3 Mechanical Resistance
* *9.4 Acoustic Properties
An intelligent use of  glass and stainless steel (floor + walls + interiors). The Access Floor panels have glass lenses inserted to light the room only from underneath with blue light and to ease the cable tracing
  • Panel:                                   Calcium sulphate core, 34 mm thick;
  • Covering:                                                     Pearl grey Sardinian natural granite;
  • Performance:                                              Concentrated load up to 450 Kg. - Distributed load 2400 Kg/smq;
  • Fire class:                                                    1;
  • Fire resistance:                                          REI 90;
  • Accessories:                                              Perimetral system, self supporting to avoid lateral loads on the glass/steel walls; substructure with cross bracing and fixing brackets to the wall.

1. Floor Construction

Floor panels are supported on structurally sound pedestals and stringers with electrostatically conductive gaskets. This sub-structure provides the structural support for Fantiles and Return Grilles where floor tiles are cut to permit their placement.

The floor area is cleared of other trades materials as far as possible and a pedestal height survey carried out with reference to the datum level of the finished floor, usually provided by others.

The sub floor is then prepared in accordance with the agreed programme by first sealing with a PVA sealant or similar and then marked out to a greater or lesser degree subject to requirements to define pedestal positions. This permits any underfloor services to be installed without clashing with pedestals.

Again subject to requirements the services can be laid or part laid and then the floor installation commences.

The floor area is given over entirely to the flooring installer. No other trades should be permitted to walk or in any other way load the floor until the floor has been laid for 48 hours. Failure to adhere to this requirement may result in deterioration of the levelness of the floor, and other loss of quality.

Wherever possible the floor layers will sectionalize the work to permit other trades to continue their work but the major trades such as concrete, cement and plastering should definitely be complete before the floor commences.

The floor void will become a service zone for high grade electronics and conditioned air for consumption by the users of the space and it is therefore in the interests of the user that dust and contamination be minimized before the floor commences.

Once laid the floor is then fitted out with fantiles and return grilles along with fire barriers and air segregation baffles. This element may be delayed if a tenant has not been found.

2. Substructures

The substructures are the load bearing elements of the floor panels, allowing the floor to be raised between one hundred millimeters and one meter or more in special cases.

All Nesite substructures are made of steel, with upper gaskets made out of conductive plastic material. Substructures and gaskets have been designed by Nesite with the aim of reducing to a minimum the noise generated when walking upon the access floor;
they provide maximum seal against air leakage when air is circulated in the underfloor plenum,
and they guarantee the electrical conductivity and continuity of the entire floor system.

Depending upon the user needs, it is possible to configure the Nesite floor substructures with or without stringers connecting the support pedestals.

A comprehensive range of substructures is available depending on clients requirements, and these fall into two main types:

2.1 MP Multi-Purpose Substructure

Modular steel structure with high versatility.
The MP support pedestal can be combined with various kinds of stringers, having different cross-section and different levels of mechanical resistance.

To adapt to increased load requirements, the MP substructure can be upgraded with stringers as the need arises.

The substructure with stringers is recommended with air conditioning systems blowing supply air into the floor void, and in any other case when air is circulated in the underfloor plenum.

The substructures with an "open" stringer cross section employ snap-on mounting; this type of installation is sufficient for many applications. thus saving the cost of screw fixing

2.2 SSH Substructure

Steel pedestals, using stringers, of proprietary NEsite design.
All stringers converge on one support pedestal and are connected with one screw, resulting in fast and cost effective installation.

The SSH substructure is ideally suited to data centres, offices and other rooms with light to medium load bearing requirements; it is largely used for Nesite Flexible Space System installations.


3. Pedestals

Floor Pedastal

Pedestals are constructed from two elements. The base and the head. The head comprises a specially shaped stringer and panel support compression bonded to a height adjustable vertical tube with nylon insert. The head is offered onto the base which comprises a structurally designed base plate with fusion bonded threaded stud and lock nut.

The whole assembly is coated with corrosion resistant plating.

The height adjustment is generally +/- 25mm and the base is bonded to the sub floor by means of an epoxy adhesive.

A head gasket of electrostatically conductive vinyl permits the panel to bed down evenly on the pedestal. The gasket has small lugs which hold the panel in place when others are removed.

MPS pedestal Low type       MPS pedestal High type
Pedestal support column attached to the standing plane by means of glue. Its characteristics are similar to other MP substructure, but it is particularly suitable to low underfloor voids.
Support pedestal fixed to the subfloor by means of glue.

4. Stringers

Galvanised steel stringers type MPM generally are fixed to the pedestal heads by means of self tapping removable screws. Each stringer provides a structural load bearing support for panels, return grilles and fantiles. The stringer is supplied with a vinyl profiled self clipping gasket along its length to provide a permanent air seal and acoustic cushion.Other grades of stringer can be supplied subject to application.

Pedestal head and stringer detail

Stringerless substructure with a load-bearing capacity well suited to the requirements of many offices.

Substructure With a light stringer of "open" cross section.
This cost-effective stringer is not intended to increase the loading capacity, but only to ensure stability between support pedestals in cases where gluing of the pedestals to the subfloor is not adopted.

Substructure, using a medium resistance stringer of "open" cross section.
Comfortably meeting the load bearing requirements of small data centres and of new or refurbished offices with medium load bearing requirements.

Substructure with an high resistance stringer "closed" cross section.
Ideally suited for medium to large data centres and offices; TAC rooms and laboratories with high load bearing requirements.
Substructure with "closed" H-shaped cross section stringers.
Intended for medium to large data centres, and other access floor applications where a very high load bearing requirement exists.

Substructure with "open" cross section stringers fitted to square tube pedestals.
A small plate, held by one screw, interconnects all of the structural elements and assures their electrical continuity.
The SSH substructure can be employed for access floors with heights between 140 millimeters and one meter; and is suitable for medium load-bearing floors.


5. Fire Barriers

Although the floor void is deemed not to be a hidden void by virtue of the grilles placed within it we still divide the void up into the various air zones by means of fire barrier. The barrier is Rockwool RW4/80 100mm thick totally aluminium foil encapsulated rigid section rockwool, or if permitted by the district surveyor air segregation baffle described below is used. The barrier is placed along the lines of the stringers.


6. Air Segregation Baffles

The Air segregation baffle is made from tightly woven glass fibre cloth (Fire Blanket) impregnated with high temperature resistant silicone rubber on both sides to provide a suitable level of air tightness. The baffle is positioned along the stringer lines and is bonded to the stringers and the sub-floor by means of a one part moisture cured silicone adhesive compatible with that impregnated into the baffle.


7. Panels

A range of high class inert-core and chipboard-core panels are available. Generally 32mm thick and 600mm square the panels tolerance is such as to allow full panels to be removed from any location and substituted with others.

The floor panels may be cut by band saw or jig saw and the exposed edge taped with a vapour sealing aluminium tape.

The panels can be cut to accommodate most forms of floor box electrical outlet, access port or power pole and when laid on the gasket provide a suitably tight air seal.

Certain panels have been tested to the load bearing requirements of the PSA specification and the system has been tested to meet European standards but the system does not hold a PSA certificate.

The metal surfaces of the panel conform to Class "O" fire classification.

Panels are delivered to site in weather proof protection and should not be subjected to wetting or high levels of Relative Humidity.

All Nesite panels measure 600 mm x 600 mm, being the industry standard size, and are manufactured from different materials to a variety of thickness in order to cater for a wide range of applications.

Each panel is laterally finished with a durable plastic edge, with re-inforcement available on the under surface by means of either plastic laminate, aluminium foil or zinc-coated steel plate.

Carefully engineered methods guarantee extremely tight size tolerances providing a totally interchangeable panel

Chipboard Panel

A wide range of chipboard panel is available in both 28 mm standard thickness, for use with stringer systems, and increased thickness for stringerless applications.

To protect these panels, three types of finish are available:

  • Plastic laminate foil glued to the underside (as a balance for the upper coverings)
  • Thin aluminium foil applied to both surfaces or simply the underside
  • Galvanized steel plate glued to the underside
The aluminium fail provides a barrier to water vapour and improves the electrical conductivity of the floor, whilst the galvanized steel increases the load bearing capacity

Finishing surfaces

Chipboard without finish
for application of plastic laminates
Chipboard with 0.05 mm aluminum foil
on both the surfaces
Chipboard with 0.05 mm aluminum foil
on the bottom surface only
Chipboard with 0.05 mm
or 0.5 mm galvanized steel sheet,
on the bottom surface only

Inert Material Panels

Constructed of a totally incombustible material with very high mechanical characteristics, this cellulose fibre-reinforced panel is extremely dense providing excellent noise absorption and high fire resistance

Since it is exceedingly stable in shape and size when exposed to a wide variation in temperature and humidity, this panel can guarantee a very long lifespan for the floor.

Should it be necessary, this panel may be protected with aluminium foil on one or both surfaces.

Finishing surfaces

Inert material on both surfaces 34 PF3 (PF3A0)
Inert material with 0.05 mm. aluminum foil
on both surfaces
37 PC5 (PCSAB)

Composite Panels

The WF panel is composed of an upper layer of chipboard and a lower, thinner layer of inert material. Lightweight, high mechanical resistance and very good fire resistance provide valuable features for this inexpensive range.

Protection can again be provided on either one or both surfaces by the application of aluminium

Finishing surfaces

Composite of inert material and chipboard
with 0.05 mm aluminium foil
on both surfaces
42 WFT (PW40B)
Composed of inert material and chipboard
with 0.05 mm aluminium foil
on the bottom surface only
42 WFM (PW40M)

8. Coverings

The top surface of each panel may be covered with a variety of either loosely laid or permanently attached finishes to provide an alternative appearance and resistance to excessive wear.

Every type of conventional floor covering has been adapted for the Nesite Access Floor range, but should it be required, customer's own material can be applied, providing it meets the Nesite technical specifications.

For loose-laid coverings. 'malted' panels or aluminium-protected panels are provided.


PLASTIC LAMINATE Computer Rooms, laboratories
VINYL Offices, Computer Rooms technical rooms and laboratories
LINOLEUM Offices with medium traffic requirement
RUBBER Technical rooms, clean rooms, boardrooms, laboratories
NEEDLEPUNCH CARPET Offices with high traffic requirement
VELOUR CARPET Offices with medium-light traffic requirement
LOOSELAY CARPET Offices with high traffic requirement
GRANITE AGGREGATE Offices with medium traffic requirement
MARBLE AGGREGATE Offices with medium-light traffic requirement
NATURAL MARBLE Areas with medium-light traffic requirement
NATURAL GRANITE Areas designated to medium-light traffic requirement
CERAMIC Offices, laboratories, areas with high traffic requirement
TERRACOTTA Areas with medium-light traffic requirement
PARQUET Offices with very light traffic requirement

9. Technical Characteristics

All Nesite Access Floor Panels are strictly tested for performance and safety as detailed below:

9.1 Fire Resistance

All Nesite floor panels and substructures meet the conditions of the REI index which provides for the resistance to fire, smoke leakage and thermal insulation. The characteristics are improved with the inert material panels.

It is important to consider that a major contribution to fire spread usually comes from covering materials (rather than from the basic panel material), and for this reason, most Nesite qualified coverings are rated as Class 1 (self-extinguishing)


9.2 Anti-static Performance

In order to minimise interference with electronic equipment, the access floor must ensure a minimum buildup of electrostatic charging, and its fast elimination when it does occur.

Floor systems (including all of their elements) with a very low electrical resistance between any point and ground are usually prescribed by data processing systems suppliers.


9.3 Mechanical Resistance

All Nesite Access Floor panels are strictly tested for performance and safety.

9.4 Acoustic Properties

All Nesite Access Floor Panels have high noise isolation with the noise absorption characteristics improving with the different types of material.

Obviously, the 'walking reaction' noise also depends upon the panel type as well as the covering material. Inert materials offer the best performance all round.

w w w . s i n g a p o r e i n t e r i o r . c o m
TEL: (65) 6323 9213  FAX: (65) 6234 0459 
N&T Group Of Companies
Head Office : 112 Robinson Road, #13-02 HB Robinson. Singapore 068902

Singapore Largest On-Line Site For Office Furniture & Interior Renovation.