Pyramid Ceiling System
The pyramid system is an integrated ceiling composed of a range of different ceilings of laid in panels fitted into a modular grid to easily incorporate lighting and air-conditioning. This ceiling consists of two parts:
A/1.2mm thick galvanized steel U-shaped channels finished with a 60 microns two pack high build epoxy top coating, clipped into square joint boxes to form square/rectangular bays. Dimensions to be made flexible to suit designers's requirements.
Pyramid ceiling consists of channels and joint boxes 1.2mm thick galvanized steel G90, U-shaped 100/150/200/250/300 mm wide by 50mm height 25 micron polyester stove enameled/60 micron powder coated finish clipped together to form 600 x 600mm up to 3000 x 3000mm open grid. The panels consist of 0.6/0.7mm thick aluminium/galvanized steel G90 of squ a re/recta ngua I r/coffered tiles/open cell/self support and shape sizes to suit grid. Perforations consists of 1.2/1.8/2mm diameter in diagonal/square pattern yielding 20/30% open area.
Light Reflection Coefficient LR shall be 0.7.
Noise Reduction Coefficient NRC shall be 0.9 using acoustic pad or felt backing. All steel tt be galvanized to BS 2989.
Suspension for Pyramid Ceiling system:
- Install rim angle at the same height.
- Hoist and install angle of spot hole or all-purpose angle iron according to proper spacing which is generally 1 to 1.2 meter on the basis of the length of ceiling plus width of keel and suspenders distance.
- Install DE square box (install it beneath the angle iron with screw with the spacing as length of ceiling plus width keel).
- Connect series keels into square panes, which should be leveled through adjustment upon completion of installation.
- Place series ceiling in the panes of keels, check the smoothness of wire tapping of ceiling and keel.
Suspension Technical specifications
Rock Wool Backing can be placed on top of the perforated panels to achieve a high coefficient of absorption (refer to perforated system section for different designated shape). These Metal Ceilings are classified non combustible fire proof class 0, aseptic, humidity - proof, bacterium - proof, corrosion - proof, not ngerous for the health.
Zinc coated carbon -steel wire ASTM A641 /A641M, Class 1 zinc coating, Soft temper. Recommended diameter 3mm so its stress at 3 tines the hanger design load (ASTM C635, Table 1 Direct Hung) will be less that yield stress of wire.
Strips are manufactured from carbon steel strip of ASTM SE 1070 and zinc plated to ASTM B 633-98.
Manufactured from galvanized mild steel strip to ASTM LFQA527.
Main Runner member were tested according to ASTM C 635 - 97 for load-carrying capabilities and didn't exceed the maximum allowable deflection equal 1/360 of its span.
Steel hot-dip galvanized, between Z180 & Z 220
ASTM A366-A366 M
ASTM A366-A366 M
BS EN 10143: 1993
Fire rating :
Suspension system member are tested for fire performance in compliance with ASTM-E119. Classified "0".
Squared or beveled
A black felt is applied to the back of every single perforated panel. The black f supplied already fixed to the panel. The black felt has extremely powerful noise absorption f erties, doesn't release noxious fibers into the air and doesn't decompose over time.
Thermal insulation can be achieved with the application of absorbing pads or insulating materials which can be selected on the market for the specific applications.
Fire performance & hygiene
These Metal Ceilings are classified non combustible fire proof class 0, aseptic, hun - proof, bacterium - proof, corrosion - proof, not dangerous for the health. The coating ii subject to any toxicological classification or identification requirements.
Noise Reduction Coefficient (NRC)
Tested as per ASTM E 795 and the result was over 90% for standard white plain tile over 80% for standard white perforated tile.
Light Reflection Coefficient (LR)
The brighter the color, the more light it reflects, standard ceiling finished in white 9003 or RAL 9010 was Tested and the result was over 85% for plain panels and over 75( perforated panels. Measured in accordance with ASTM 1477 - 98.
Metal LX panels with a degree of gloss upto 22%. can be provided opon request.
Ceiling Attenuation Class (CAC)
Tested and proved over 45 %.
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