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540 Barry’s Advanced Construction of Buildings
Main runners of
ceiling grid tied to
the structural ceiling
Secondary runner rests on
main runners
Exposed grid. All of the runners and secondary
runners can be seen
Semi-concealed grid. All of the runners and
secondary runners can be seen, but the rebate
reduces the prominence of the grid
Concealed grid. All of the runners hidden beneath
the ceiling panels
Figure 10.4 Suspended ceiling grids.
the tile placed into the grid. In areas where wind uplift may be a problem, e.g. in entrance
lobby areas, it is common to provide a more rigid fixing to avoid accidental lifting and
damage to the tiles. Most manufacturers produce plain tiles as well as tiles with a variety
of preformed apertures into which lights and sensors are placed. Installing perforated tiles
can provide additional sound insulation.
Support grid
The support grid is made from lightweight wire hangers, fixed to the underside of the
structural floor. These wire hangers support the lightweight modular grid into which the