INSTALLATION INSTRUCTION 300
System C
1. System C
Foreword
The System C is the most common ceiling construction.
This is because System C is quick and easy to install and as
a result provides a very economical solution.
This system uses an exposed 15mm or 24mm grid system.
Both square edge (SK), recessed edge (VT) tiles, and (SF)
downwardly demountable tiles can be installed in this system.
Each ceiling tile is individually removable providing access to
any services in the ceiling void.
The full range of AMF ceiling tiles are available to fit into a
System C. It is also simple to integrate standard elements
such as lights, speakers, heating and ventilation. All of the
technical information in this publication is based on
labortory test results.
BS EN 13964
The recommendations in this document are based on the
requirements of BS EN 13964.
Area of Application
This document does not cover the requirements of a fire
rated ceiling. For further information please contact the AMF
technical department.
All information provided is current technical data. All relevant test reports, assessments and installation guidelines are to be considered. All system details conform with current technology
and are based on the use and compatibility of AMF products and system components used in both internal and external tests. AMF accepts no liability or responsibility for use of third
party components, or for any variations to conditions stipulated in test data. We recommend not to mix production batches on jobs.
12/2010
1/25
INSTALLATION INSTRUCTION 300
System C
1.1 System construction
Main runner distance 1200/1250mm
The Layout used depends on the weight of the panels to be used (see page 5 for weights).
3
4
6
5
1
2
10
9
Material requirements
The quantities and recommended installation times are estimates only. The figures do not include an allowance for
waste.
600 x 600
625 x 625
600 x 1200
625 x 1250
300 x 1200
312.5 x 1250
300 x 1800
300 x 2500
400 x 1200
400 x 2500
Requirements for each m² of
ceiling surface
AMF-Mineral ceiling tiles
1
pcs.
2.78
2.56
1.39
1.28
2.78
2.56
1.86
1.34
2.09
1.00
AMF-Metal ceiling tiles
1
pcs.
2.78
2.56
1.39
1.28
2.78
2.56
Main runner PH 375
2
lin.m
Main runner PH 360
2
lin.m
0.84
Hanger
3
pcs.
0.67
Grid sizes in mm
PH 30/31.25 Cross tee
lfdm.
PH 40 Cross tee
lin.m
0.80
0.80
0.84
0.67
0.67
0.80
0.84
0.67
0.67
3.34
3.34
0.67
2.50
0.84
1.85
1.85
0.56
0.40
0.67
1.67
0.40
PH 60/62,5 Cross tee
4
lin.m
0.84
0.80
PH 120/125 Cross tee
5
lin.m
1.67
1.60
1.67
1.60
3.34
3.20
pcs.
5.56
5.12
2.78
2.56
5.56
5.12
3.70
2.67
4.16
2.00
lin.m
0.60
0.60
0.60
0.60
0.60
0.60
0.60
0.60
0.60
0.60
pcs.
1.20
1.20
1.20
1.20
1.20
1.20
DF (optional) Hold down clip
2.50
RWL edge trim or A-RWU edge
runnter for metal tiles
KRF (metal) border clip
6
Hanger centre´s
9
m
1.25
1.20
1.25
1.20
1.25
1.20
1.80
1.80
1.25
1.50
Distance beteween main
runners
Perimeter trim fixing centre´s
10
m
1.20
1.25
1.20
1.25
1.20
1.25
0.30
0.30
1.20
0.40
m
0.40
0.40
0.40
0.40
0.40
0.40
0.40
0.40
0.40
0.40
min
25
25
23
23
33
33
33
33
33
33
Fitting time required for
installation
Advice
The recommended minimum void depth for a standard installation is 120mm, however a depth of greater than 150mm is preferred.
If a shallower void depth is required use the AMF (SF) edge detail which will be fully demountable.
All information provided is current technical data. All relevant test reports, assessments and installation guidelines are to be considered. All system details conform with current technology
and are based on the use and compatibility of AMF products and system components used in both internal and external tests. AMF accepts no liability or responsibility for use of third
party components, or for any variations to conditions stipulated in test data. We recommend not to mix production batches on jobs.
12/2010
2/25
INSTALLATION INSTRUCTION 300
System C
1.2 System build
Main runner distance 600/625mm
The Layout used depends on the weight of the panels to be used (see page 5 for weights).
3
6
4
10
1
2
10
9
Material requirements
The quantities and recommended installation times are estimates only. The figures do not include an allowance for
waste.
600x600
625x625
600x1200
625x1250
Requirements for each m² of ceiling surface
AMF-Mineral ceiling tiles
1
Stk.
2.78
2.56
1.39
1.28
AMF - Fibrafutura ceiling tiles
1
Stk.
2.78
2.56
1.39
1.28
Main runner C-PH 3750
2
lfdm.
Main runner C-PH 3600
2
lfdm.
1.67
Hangers
3
Stk.
1.85
1.78
1.85
1.78
C-PH 60/62.5 Cross tee
4
lfdm.
1.67
1.60
0.84
0.80
Stk.
5.56
5.12
2.78
2.56
Grid sizes in mm
C-DF (optional) hold down clip
1.60
1.60
1.67
C-RWL edge trim
6
lfdm.
0.60
0.60
0.60
0.60
Hanger centre´s
9
m
0.90
0.90
0.90
0.90
Main runner centre´s
10
m
0.60
0.63
0.60
0.63
m
0.40
0.40
0.40
0.40
min
30
30
28
28
Perimeter trim fixing centre´s
Fitting time required for picking and
packing
Advice
The recommended minimum void depth for a standard installation is 120mm, however a depth of greater than 150mm
is preferred. If a shallower void is required use the AMF (SF) edge detail which will be fully demountable.
All information provided is current technical data. All relevant test reports, assessments and installation guidelines are to be considered. All system details conform with current technology
and are based on the use and compatibility of AMF products and system components used in both internal and external tests. AMF accepts no liability or responsibility for use of third
party components, or for any variations to conditions stipulated in test data. We recommend not to mix production batches on jobs.
12/2010
3/25
INSTALLATION INSTRUCTION 300
System C
2. General
Transport and storing
The ceiling tiles should be installed in a dry environment, the cartons should be stacked on a flat surface
to avoid damage.
Handling
Care is needed when manually handling the cartons to prevent damage to the tiles. The cartons must not be
dropped or thrown and they must not be stored on their edges or at any angle.
When handling the ceiling tiles themselves, clean gloves are recommended to prevent marking the surface.
Fitting condition
The room where the ceiling tiles are to be installed should be dry and clean. All external doors and glazing should be
installed and it is preferable that the heating system is in operation and a normal work temperature of 15-20°C be provided. If the humidity is above 70% it is not usually reommended to install the ceiling tiles. In high humidity situations
please contact the AMF technical department for advice.
In environments with permanently high humidity, please contact the AMF technical department for advice.
Anticorrosive substructure
All of the standard exposed grid components meet the requirements of exposure class B (BS EN 13964). If there is
a requirement to resist higher humidity than this, components should be selected to meet exposure class C or D as
required.
Exposure classes to BS EN 13964 2004
Category
A
Up to 70% relative humidity. up to 25°C but without corrosive pollutants
B
Up to 90% relative humidity, up to 30°C but without corrosive pollutants
C
Over 90% relative humidity and risk of condensation
D
More severe than above
All information provided is current technical data. All relevant test reports, assessments and installation guidelines are to be considered. All system details conform with current technology
and are based on the use and compatibility of AMF products and system components used in both internal and external tests. AMF accepts no liability or responsibility for use of third
party components, or for any variations to conditions stipulated in test data. We recommend not to mix production batches on jobs.
12/2010
4/25
INSTALLATION INSTRUCTION 300
System C
3. System components
3.1 Ceiling tiles: Thickness weights and available edge details
Standard
Thermatex
Thermatex
Thermatex
Thermatex
SK 15/24
d=15mm 4.5kg / m²
d=19mm 5.7kg / m²
d=24mm 7.2kg / m²
d=40mm 12.0kg / m²
Acoustics
Th. Alpha
Th. Alpha coloured
Th. Thermofon
Th. Acoustic
Th. Acoustic RL
Th. SF Acoustic
Th. dB Acoustic 24mm
Th. dB Acoustic 30mm
Kombimetal
VT-S 15/24
Material+Design
Thermatex Symetra
Metal Symetra
Wood Symetra
Fibrafutura
VT- 15/24
Grid Construction 24mm table grid including hangers
VT 15/24
VT-S15F
d=19mm 3.0kg / m²
d=19mm 3.0kg / m²
d=15mm 2.4kg / m²
d=19mm 4.6kg / m²
d=19mm 5.8kg / m²
d=24mm 8.4kg / m²
d=24mm 8.4kg / m²
d=30mm 10.5kg / m²
d=19mm 9.0kg / m²
SF Edge
long side
d=15mm
d=0.5-0.7mm d=12mm d=25mm VT-S 15/24
SF Edge
short side
5.5kg / m²
5.5kg / m²
10.5kg / m²
11-13kg / m²
SK 15/24, VT 15/24
SK 15/24, VT 15/24
SK 24, VT 24
SK 24
Edges: Mineral Fibre. Wood
SK 15/24, VT-S 15/24
SK 15/24
SK 15/24
SK 15/24, VT 15/24
SK 15/24, VT 15/24
SF
SK 15/24, VT 15/24
SK 15/24
VT 24
Edges: Mineral Fibre
SK 15/24, VT 15/24, VT-S 15
SK 15/24, VT 15/24, VT-S 15/24
VT-S 15F
SK 15/24, VT 15/24
SK 15/24
2.5kg / m²
Data sheets
Data sheets are available for all ceiling tiles these contain full information on the technical performance of the
systems.
Advice
Special size tiles and edge details are available to order, please contact the AMF technical department for advice.
All information provided is current technical data. All relevant test reports, assessments and installation guidelines are to be considered. All system details conform with current technology
and are based on the use and compatibility of AMF products and system components used in both internal and external tests. AMF accepts no liability or responsibility for use of third
party components, or for any variations to conditions stipulated in test data. We recommend not to mix production batches on jobs.
12/2010
5/25
INSTALLATION INSTRUCTION 300
System C
3.2 Grid system
Exposed grid system with 24mm wide grid sections. Both main runners and cross tees are manufactured from high
quality electro galvanised steel with a steel capping in white.
38
24mm universal main runner
24mm cross tee
24mm cross tee
6.5
Maximum deflection for
the grid system according to BS EN 13964
l/500 = 2.5mm max
11
Performance system
24
qmax = 8.0 kg/m² (1250x1250)
qmax = 9.9 kg/m² (1200x1200)
24mm universal main runner
24mm cross tee
24mm cross tee
max. 1250mm
625
24mm Universal main runner 3600/3750
UNI PH T24/38 - 3600
UNI PH T24/38 - 3750
6.5
Maximum deflection for
the grid system according to BS EN 13964
l/500 = 2.5mm max
38
Performance Click
625
11
24mm cross tee
24mm cross tee
24mm cross tee
max. 1250mm
24
24mm Cross tee 600/625
UNI PQ Click T24/38 - 600
UNI PQ Click T24/38 - 625
qmax = 8.0 kg/m² (1250x1250)
qmax = 9.9 kg/m² (1200x1200)
max. 1250mm
max. 1250mm
24mm Cross tee 1200/1250
UNI PQ Click T24/38 - 1200
UNI PQ Click T24/38 -1250
625
625
All information provided is current technical data. All relevant test reports, assessments and installation guidelines are to be considered. All system details conform with current technology
and are based on the use and compatibility of AMF products and system components used in both internal and external tests. AMF accepts no liability or responsibility for use of third
party components, or for any variations to conditions stipulated in test data. We recommend not to mix production batches on jobs.
12/2010
6/25
INSTALLATION INSTRUCTION 300
System C
3.3 Hangers
Fast hanger with loop/clasp
Item
SoS 100 - 300
SoS 300 - 600
SoS 600 - 1000
SoS 1000 - 1250
SoS 1250 - 1500
SoS 1500 - 1750
A
SoS or
SoH
A:drop
100 - 330 mm
320 - 590 mm
520 - 990 mm
650 - 1260 mm
760 - 1480 mm
900 - 1760 mm
DoS or
DoH
Spring hanger with wire hook
Item
L: length
Maximum load 25kg
SHD 125
125 mm
SHD 250
250 mm
L
SHD
DoS
or
DoH
Hanger clickfix II with tension spring
Item
L: length
BS 10
110 mm
L
Nonius hanger bottom part
Item
Anu 24
Maximum
load 25kg
Item
DAH
Sti
L
A: drop
85 mm
135 mm
235 mm
340 mm
Anu
L: length
190 mm
Maximum load 25kg
Direct hanger
L
DAH
Ano
L: length
40 mm
Nonius hanger top part and bottom part
Item
A: drop
SAH 5 (40/80)
45 - 75 mm
SAH 5 (60/100)
55 - 100 mm
SAH 5 (80/120)
85 - 130 mm
SAH
Sti
A
Nonius hanger top part
Item
Ano 115
Maximum load 25kg
Ano 120
Ano 130
Ano 140
A
BS 10
Maximum load 25kg
Maximum load 25kg
All information provided is current technical data. All relevant test reports, assessments and installation guidelines are to be considered. All system details conform with current technology
and are based on the use and compatibility of AMF products and system components used in both internal and external tests. AMF accepts no liability or responsibility for use of third
party components, or for any variations to conditions stipulated in test data. We recommend not to mix production batches on jobs.
12/2010
7/25
INSTALLATION INSTRUCTION 300
System C
3.3.1 Hanger accessories/fitting
L
Hanger wires with loop DoS
with hook DoH
DoS
DoH
Item
L: length
DoS / DoH 125
125 mm
DoS / DoH 250
250 mm
DoS / DoH 375
375 mm
DoS / DoH 500
500 mm
DoS / DoH 750
750 mm
Fitting
Hangers should be fixed directly vertically however it is possible to use angled hangers but additional hangers and
bracing may be required, please contact the AMF technical department for advice.
Maximum hanger centres are 1200mm (600mm module) or 1250mm (625mm module). Each main runner joint must
have a hanger within 150mm of the joint.
Suspension depths of up to 3,000mm can be accommodated with fast hangers or wire hangers, for suspension depths
over 3,000mm the nonius hanger or pre-straightened galvanized steel wire is recommended.
A combination of several tension springs as extension are not recommended.
Hangers subjected to compression.
In normal situations the hangers are in tension. In applications where the
ceiling may be subject to compression forces nonius hangers must be
used with two pins for security.
X
Hangers under compression
In normal situations the hangers are subject to loads (downward forces) and therefore under tension (ceiling tiles, grid
lighting etc.) In special applications where the ceiling may be subject to compression (upward forces), nonius hangers
must be used (upper + lower) with two fixings for security (refer to page 7).
Fire rated ceilings
For fire rated applications please contact the AMF technical department.
All information provided is current technical data. All relevant test reports, assessments and installation guidelines are to be considered. All system details conform with current technology
and are based on the use and compatibility of AMF products and system components used in both internal and external tests. AMF accepts no liability or responsibility for use of third
party components, or for any variations to conditions stipulated in test data. We recommend not to mix production batches on jobs.
12/2010
8/25
INSTALLATION INSTRUCTION 300
System C
3.3.2 Perimeter hangers
Minimum distances
To avoid overloading the perimeter trim, the first hanger must be positioned at a minimum distance from the wall. This
distance varies with the system weight.
Material
Tile thickness
Thermatex
d = 15 mm
Thermatex
d = 19 mm
Thermatex d ≥ 19 mm
Kombimetal
Metal tiles
Wood tiles
Distance X
450 mm
300 mm
150 mm
150 mm
150 mm
150 mm
X
All information provided is current technical data. All relevant test reports, assessments and installation guidelines are to be considered. All system details conform with current technology
and are based on the use and compatibility of AMF products and system components used in both internal and external tests. AMF accepts no liability or responsibility for use of third
party components, or for any variations to conditions stipulated in test data. We recommend not to mix production batches on jobs.
12/2010
9/25
INSTALLATION INSTRUCTION 300
System C
3.4 Perimeter Trim
The standard perimeter trim is a white wall angle 19 x 24 x0.5mm (24x24x0.5mm), mitred at the corners. For the shadow edge detail, the shadow trim 25x15x8x15mm can be used. The perimeter tiles are cut and lay in.
8
15 15
24
Ref. Number
24
RW L19/24
RW L24/24
SRW 25x15x8x15 SRW 25x15x8x15
SRW 20x20x20x20
RW L 24/24
24
SRW 20x20x20x20
20 20
Lenght 3.05mm
3.05mm
3.05mm
3.05mm
25
Thickness
Wall Angle 19/24
0.5mm
Wall Angle 24/24
0.5mm
Shadow Trim 25/15/8/15
0.5mm
Shadow Trim 20/20/20/20 0.7mm
RW L 19/24
19
Options
For the perimeter of the ceiling. several options are available:
15 15
Support
The grid is laid out so that it is supported on at least 2/3 of the
horizontal leg of the perimeter trim. This applies to both main runners
and cross tees.
24
≥16
The perimeter cut tiles should be
cut to the same dimensions.
≥16
24
Fixings
Generally installation has to be carried out with approved fixings
suitable for the type of wall being fixed to. The maximum fixing
centres are 400mm. Flat headed screws are recommended to
prevent deformation of the trim.
The grid should be supported on at least 2/3 of
the horizontal leg of the
perimeter trim
00mm
max 4
Corners
The trim should be mitred in both external and internal corners. An
alternative is to use preformed mouldings to suit the trim.
All information provided is current technical data. All relevant test reports, assessments and installation guidelines are to be considered. All system details conform with current technology
and are based on the use and compatibility of AMF products and system components used in both internal and external tests. AMF accepts no liability or responsibility for use of third
party components, or for any variations to conditions stipulated in test data. We recommend not to mix production batches on jobs.
12/2010
10/25
INSTALLATION INSTRUCTION 300
System C
Perimeter Trim
L shaped wall angles with square edge (SK) tile
This is a standard construction. The grid and tiles must be supported on at least 2/3 of the perimeter trims horizontal
leg.
Shadow trim with square edge (SK) tile
This is an alternative construction. The tile and grid are both supported on the lower leg of the trim providing a shadow gap detail around the perimeter. The grid and tiles must be supported on at least 2/3 of the perimeter trims lower
horizontal leg.
Shadow trim with recessed edge (VT) tile
The grid construction is supported on the higher leg of the 25x15x8x15mm trim. The tiles are supported on the lower
edge. There are filler pieces available to fill the gap between the tiles.
Alternative for recessed edge (VT) tile
An alternative construction is to use the VT edge tiles on an L-shaped wall angle. It is possible to reform the edges
using an appropriate rotary cutter and then repaint the edges. Alternatively the perimeter rebate can be reformed to a
simple step rebate using a sharp blade hand tool. In both these situations the grid and the perimeter trim are installed
at the same level.
All information provided is current technical data. All relevant test reports, assessments and installation guidelines are to be considered. All system details conform with current technology
and are based on the use and compatibility of AMF products and system components used in both internal and external tests. AMF accepts no liability or responsibility for use of third
party components, or for any variations to conditions stipulated in test data. We recommend not to mix production batches on jobs.
12/2010
11/25
INSTALLATION INSTRUCTION 300
System C
3.5 Accessories
There are many solutions available to allow air exchange between the room and the ceiling void which may be required
for various reasons.
3.5.1 Shadow trim with ventilation slots
Open area of ventilation slots: approx 44cm² per linear metre.
Available in the following trims:
Shadow trim 20/20/12/20
Shadow trim 20/20/20/20
d = 0.6mm
d = 0.75mm
L = 3.00m
L = 4.00m
3.5.2 Perimeter trims fixed to blocks
For L shaped wall angles and shadow trims.
The blocks can be formed from wood or other material.
The fixing centres are reduced to 200mm and the fixing blocks
must be at least 100mm wide.
100mm
m
max. 200m
Open area of ventilation slots: approx 200cm² per linear metre.
3.5.3 Light and ventilation grilles
An alternative is to use grill type materials
at the perimeter to provide the ventilation.
This solution can provide much higher levels
of open areas. The panels are simply laid
into the grid system and take the place
of the perimeter ceiling tiles.
A range of panel types are available in a variety of materials and module sizes.
All information provided is current technical data. All relevant test reports, assessments and installation guidelines are to be considered. All system details conform with current technology
and are based on the use and compatibility of AMF products and system components used in both internal and external tests. AMF accepts no liability or responsibility for use of third
party components, or for any variations to conditions stipulated in test data. We recommend not to mix production batches on jobs.
12/2010
12/25
INSTALLATION INSTRUCTION 300
System C
Accessories
3.5.4 Filler Pieces
Filler pieces can be installed to close the small gap produced when using shadow trim. The filler pieces are available in
the following edge details:
∙ VT-24
∙ VT-15
Filler piece
Shadow Trim
SRW 25x15x8x15
Cut Tile Edge
VT Edge Option
3.5.5 Internal and External Mitres
As an alternative to mitring the corner joints, preformed mouldings are available to save installation time.
Internal and external mitres
for L- Trim 19/24 or 24/24
Internal corner
The mitres are simply slid
on the corners.
External corner
Internal and External mitre
for Shadow Trim SRW 25/15/8/15
The shadow trim mouldings have
metal lugs which are bent over to
secure them in place.
Internal corner
External corner
All information provided is current technical data. All relevant test reports, assessments and installation guidelines are to be considered. All system details conform with current technology
and are based on the use and compatibility of AMF products and system components used in both internal and external tests. AMF accepts no liability or responsibility for use of third
party components, or for any variations to conditions stipulated in test data. We recommend not to mix production batches on jobs.
12/2010
13/25
INSTALLATION INSTRUCTION 300
System C
Accessories
3.5.6 Fixing Clip
To hang objects below the grid system,
several different screw and decoration clips
are available for both the 15mm wide
and 24mm wide grid systems.
Each clip should have an additional
hanger from the soffit capable of carrying
16kg.
3.5.7 Hold down clip
In areas with windows, doors or atriums
where there is the possibility of substantial
pressure differentials, the ceiling tiles can
be held in place with hold down clips.
After the ceiling tiles have been installed,
the clips are installed onto the supporting grid section.
Other applications
AMF Soundmosaic
3.5.8 Soundmosaic
The audio system, which works like a wide
area speaker is available in all Thermatex surfaces.
The neighbouring tiles are locked to the grid
using hold down clips which improves the audio
reflection pattern.
Further information about this system is available.
All information provided is current technical data. All relevant test reports, assessments and installation guidelines are to be considered. All system details conform with current technology
and are based on the use and compatibility of AMF products and system components used in both internal and external tests. AMF accepts no liability or responsibility for use of third
party components, or for any variations to conditions stipulated in test data. We recommend not to mix production batches on jobs.
12/2010
14/25
INSTALLATION INSTRUCTION 300
System C
Accessories
3.5.9 Column rings
When finishing suspended ceilings to columns,
the use of prefabricated column rings is recommended.
The aluminium rings are available with different diameters.
Diameters are available from 200mm to 1000mm in 50mm increments.
Colour: white similar to RAL 9010
3.5.10 Flexible wall angle
When finishing ceilings to curved walls, the use of
a flexible wall angle is recommended. Where the wall
diameter exceeds 1000mm the wall angles can be
adjusted by hand to fit the convex or concave shape.
RWL Flex:
Material: PVC
Size 28/22.5mm
Length 2,500mm
RWL Flex (30/20):
Material: Aluminium
Size 30/20mm
Length 3,000mm
For radii smaller than 4.,000mm, on
site painting after bending is recommended.
Advice
Very small radii can be difficult to form. In some cases a plasterboard transition detail should be considered.
All information provided is current technical data. All relevant test reports, assessments and installation guidelines are to be considered. All system details conform with current technology
and are based on the use and compatibility of AMF products and system components used in both internal and external tests. AMF accepts no liability or responsibility for use of third
party components, or for any variations to conditions stipulated in test data. We recommend not to mix production batches on jobs.
12/2010
15/25
INSTALLATION INSTRUCTION 300
System C
3.6 Lighting/ Additional weights
3.6.1 Modular lightning
When the main runners are at
1200mm/1250mm centres, two additional
hangers on the 1200mm/1250mm long
cross tee are required
When the main runners are at
600mm/625mm centres, no additional
hangers are required providing the
lights weigh no more than 6kg.
Additional hanger
Detail
Light fittings, ventilation grilles and sprinkler
systems should not have more than a
5mm upstand adjacent to the grid.
3.6.2 Additional Weight
Generally additional loads need to be supported with
additional hangers from the soffit.
Services such as downlighters and speakers etc require
a pattress or frame to distribute the load on to the grid system.
Loads less than 0.3kg require no additional support.
3.6.3 Installation frames
A versatile installation frame is available
and can be used for all common services
fittings. The frame ensures that the additional
weight is carried by the grid system
and is not supported on the
tiles. Two additional hangers
are required.
Additional hanger
All information provided is current technical data. All relevant test reports, assessments and installation guidelines are to be considered. All system details conform with current technology
and are based on the use and compatibility of AMF products and system components used in both internal and external tests. AMF accepts no liability or responsibility for use of third
party components, or for any variations to conditions stipulated in test data. We recommend not to mix production batches on jobs.
12/2010
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INSTALLATION INSTRUCTION 300
System C
B
4. Room layout / Ceiling Symmetry
Modul size 600mm/625mm
Arrangement
The ceiling is set out from the middle of the room with
the complete tiles (Tile width = B) In the example shown,
the cut tile at the perimeter is very small.
≤B/2
Layout not
recommended
Advice
If the cut tile is less than half the tile width (<B/2) it will
appear aesthetically poor and therefore is not advisable.
B/2
≥B/2
≥B/2
B/2
≤B/2
Layout not
recommended
B
Correct Layout
Ceilings with larger cut tiles are aesthetically more pleasing
and are more efficient to install. When setting out the ceiling.
start from the middle. The first tile should be directly on the
centre line (half the tile each side of the centre). This will
always result in a perimeter cut tile greater than half the tile
width.
All information provided is current technical data. All relevant test reports, assessments and installation guidelines are to be considered. All system details conform with current technology
and are based on the use and compatibility of AMF products and system components used in both internal and external tests. AMF accepts no liability or responsibility for use of third
party components, or for any variations to conditions stipulated in test data. We recommend not to mix production batches on jobs.
12/2010
17/25
INSTALLATION INSTRUCTION 300
4.1 Construction
Main runner distance 1200mm/ 1250mm
max. 1200
max. 1200
hanger
Main runner
long cross tee
short cross tee
(for square modules)
1250
Main runner
centre‘s
Construction layout
Module 600mm/625mm
Between the main runners at 1250mm
centres, a 1250mm long cross tee is fitted
at 625mm centres. These cross tees are
then subdivided by 625mm cross tees to
form the 625mm x 625mm module layout.
If the tile size is 1250mm x 625mm then the
short 625mm cross tees are not required.
The layout for a 600mm x 600mm module is
carried out the same way except the main
runners are at 1200mm centres and the
cross tees are 1200mm and 600mm long.
Hanger
centres
System C
Main runner
Module size
625
625
625
625
625
hanger
The following construction is
not recommended:
This construction also known as the
“ladder format” uses long cross tees parallel to
the main runners. This layout can increase
the deflection beyond acceptable limits.
Main runner
long cross tee
X
X
Main runner
short cross tee
(for square modules)
Main runners at 600mm/ 625mm centres
900
900
Hanger
centres
900
hanger
Main runner
625
short
cross tee
625
Main runner
centre‘s
Construction layout
Module 600mm/625mm
This layout uses only short 600mm or 625mm
cross tees and has more hangers so is able
to carry a greater load.
Lights up to 6kg can be supported without
any additional hangers. Weights over
6kg require two additional hangers.
Module size
Main runner
625
625
625
625
625
All information provided is current technical data. All relevant test reports, assessments and installation guidelines are to be considered. All system details conform with current technology
and are based on the use and compatibility of AMF products and system components used in both internal and external tests. AMF accepts no liability or responsibility for use of third
party components, or for any variations to conditions stipulated in test data. We recommend not to mix production batches on jobs.
12/2010
18/25
INSTALLATION INSTRUCTION 300
System C
4.2 Installation Instructions
Main runner distance 1200mm/1250mm
Please ensure you have read the previous chapters in this manual as they contain information on the correct installation of the system.
Perimeter trim
As preparation before the installation, all
perimeter features (walls, columns etc) should
be marked with a guideline of the ceiling height
(the height of the top edge of the perimeter trim).
Perimeter trims should be installed using
appropriate fixings and mitred at the corners
(see page 10).
Hangers
The position of the top fixings can be taken from
the reflected ceiling layout and their positions
marked on the soffit. Additional hangers may
be required depending upon:
Main runner spacing
Maxiumum edge distances (first and last hangers)
Additional hangers that may be required
to support services
Main Runners
Ensure that the hangers are the correct lenght for
the installation. The hangers themselves should
all be aligned in the same direction.
After the main runners are installed,
they need to be aligned and horizontally
levelled.
All information provided is current technical data. All relevant test reports, assessments and installation guidelines are to be considered. All system details conform with current technology
and are based on the use and compatibility of AMF products and system components used in both internal and external tests. AMF accepts no liability or responsibility for use of third
party components, or for any variations to conditions stipulated in test data. We recommend not to mix production batches on jobs.
12/2010
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INSTALLATION INSTRUCTION 300
System C
Installation advice
Main runner centre‘s 1200/1250mm
Long cross Tees
The long cross tees can now be installed
in complete rows, starting with areas 1 & 2 first.
The cross tees have to be cut to fit at the
perimeter. Care should be taken to ensure an
adequate amount of cross tee is supported on
the perimeter trim.
4
1
2
3
Short cross Tees
The short cross tees are also installed in rows
as well, starting with areas 1 & 2 first.
The cross tees have to be cut to fit at the
perimeter. Care should be taken to ensure an
adequate amount of cross tee is supported on
the perimeter trim.
Please note:
Please ensure that the main runners are aligned correctly and the grid construction is square.
This needs to be done as early as possible and continually checked to reduce possible alignment work to a minimum. Not doing so can lead to substantial delays when the tiles are installed. This is especially important when VT
edge tiles are being used.
This also reduces the possibility of tile damage during future maintenance work.
All information provided is current technical data. All relevant test reports, assessments and installation guidelines are to be considered. All system details conform with current technology
and are based on the use and compatibility of AMF products and system components used in both internal and external tests. AMF accepts no liability or responsibility for use of third
party components, or for any variations to conditions stipulated in test data. We recommend not to mix production batches on jobs.
12/2010
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INSTALLATION INSTRUCTION 300
System C
Installation advice
Main runner centre‘s 1200/1250mm
Ceiling tiles
If the ceiling void is deep enough, at least 120mm
(although 150mm is preferred) installation from
below is possible without any problems.
The tiles should be installed first in areas with
hangers to avoid damage.
The perimeter tiles can be cut with a standard
hand held blade (Stanley knife or similar).
Advice:
When using suspension wires with wire hooks,
there is a possibility of damage to the panels
occurring during installation. Please observe the
installation sequence opposite.
Tile removal should be done in the same manner.
Warning: Damage to tile possible
4.3 Main runner centres 600mm/625mm
Installation of the 600mm/ 625mm system varies only
slightly to the 1200mm/ 1250mm system
Perimeter trim
Perimeter trims should be installed as above.
correct installation of the tile
Hangers
Due to the closer centre‘s of the main runners, additional hangers are required.
Main runners
Main runners are installed as above, but approximately twice the number of main
runners are needed.
Long cross tees
Not required
Short cross tees
Identical, but they are installed between main runners.
Ceiling Tiles
Due to the larger number of hangers in the void, additional care is required when installing the tiles.
All information provided is current technical data. All relevant test reports, assessments and installation guidelines are to be considered. All system details conform with current technology
and are based on the use and compatibility of AMF products and system components used in both internal and external tests. AMF accepts no liability or responsibility for use of third
party components, or for any variations to conditions stipulated in test data. We recommend not to mix production batches on jobs.
12/2010
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INSTALLATION INSTRUCTION 300
System C
5. Special Design
5.1 Direct Fix
For ceiling installations where a conventional installation is not possible, a direct suspension can offer a reduced
installation height. This, however, can make removing or changing SK or VT edge tiles at a later time, difficult. Consideration should be given to using an SF edge tile which provides full accessibility.
SAH
L
DAH
Direct hanger
Product
DAH
SAH
L:Length
40mm
45mm
H: Installation depth
ca. 60mm
ca. 80mm
H
A
Sti
Step by Step installation
When using SK or VT edge tiles, installing the tiles from below is not possible. Instead the tiles are put into the grid
system as it is being constructed. SF edge tiles can be installed from below and are easy to install.
Installation
The grid is set out according to the ceiling layout. The correct number of hangers need to be threaded onto the grid
section and affixed to the soffit. The cross tees and tiles are then installed as the ceiling is built up.
All information provided is current technical data. All relevant test reports, assessments and installation guidelines are to be considered. All system details conform with current technology
and are based on the use and compatibility of AMF products and system components used in both internal and external tests. AMF accepts no liability or responsibility for use of third
party components, or for any variations to conditions stipulated in test data. We recommend not to mix production batches on jobs.
12/2010
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INSTALLATION INSTRUCTION 300
System C
Special Design
5.2 Thermal insulation
It is not recommended that insulation is supported on the suspended ceiling for the following reasons:
•Following installation the ceiling void becomes inaccessible. Further access can cause damage to the ceiling tiles.
•The grid structure must be laid out accordingly for additional loads to be added.
•Loads supported directly on the ceiling tiles are not allowed.
•The grid system, including ceiling tiles, does not create an airtight seal.
•The installation of a vapour barrier would be required, although technically and practically this is not possible.
Please see the following example for clarification.
A suspended ceiling is installed under a hall ceiling with existing
foam insulation. The insulation is placed directly on to the
suspended ceiling which reduces the temperature in the ceiling
void and the underside of the roof.
As cold air holds much less water vapour than warm air, condensation
forms in the ceiling void. A potential solution to this could be to use a
vapour barrier, although due to the large number of hangers and
subsequent penetrations that would be required this solution is not
feasible.
The structure and the thermal insulation should be chosen so
that water vapour cannot reach the structure, or only a
small amount, that won’t cause condensation.
The picture below, shows a suitable construction with insulation
and a vapour barrier (see manufacturers details for installation).
The construction will need to provide fixing points for the
suspended ceiling grid e.g. 4/6cm wood slats.
All information provided is current technical data. All relevant test reports, assessments and installation guidelines are to be considered. All system details conform with current technology
and are based on the use and compatibility of AMF products and system components used in both internal and external tests. AMF accepts no liability or responsibility for use of third
party components, or for any variations to conditions stipulated in test data. We recommend not to mix production batches on jobs.
12/2010
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INSTALLATION INSTRUCTION 300
System C
Special Design
5.3 Angled Ceilings
When installing a suspended ceiling on a slope, the following needs to be considered:
Slope < 10 degrees: Main runners can be installed at 1200mm/ 1250mm centres
Slope >10 degrees:
Main runners have to be at 600mm/ 625mm centres
Slopes > 30 degrees: Additional actions need to be taken
Appropriate hangers must be used. Quick Hangers with hooks, rigid angles or prestraightened
steel wire are acceptable.
Hanger centre‘s should be according to the system data and the ceiling pitch.
Ensure that the general installation guidelines for grid installation
and additional loading are followed.
9
DN: Ceiling pitch 0° - 30°
9 Hanger centre‘s
(see System-Construction page 2/3)
GABLE WALL
Perimeter trim at eaves
The use of an additional timber batten adjusted
to the relevant slope is recommended.
The picture below shows several alternatives.
Without the batten even a small slope will leave a visible
gap between the tiles and the trim at the perimeter.
The main runners and grid system have to be butt jointed
tightly against the perimeter trim.
APEX
hanger
Short cross
tee
Main runner
EAVES
Perimeter trim at gables
As the main runners are installed down the slope
the cross tees will be installed onto the perimeter
trim going up the slope. This means the cross tees could
slide down the slope. To prevent this, the cross tees need
to be fixed using the wall connection angle shown in the picture.
All information provided is current technical data. All relevant test reports, assessments and installation guidelines are to be considered. All system details conform with current technology
and are based on the use and compatibility of AMF products and system components used in both internal and external tests. AMF accepts no liability or responsibility for use of third
party components, or for any variations to conditions stipulated in test data. We recommend not to mix production batches on jobs.
12/2010
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INSTALLATION INSTRUCTION 300
System C
6. Documentation
System C as fire protection
Because of the special requirements for fire rated ceilings,
please refer to the following documents. This is not a complete list.
Please contact the AMF office for specific advice.
WFRC. NO C102765 Fire Protection under Steel Beams
WFRC. NO C117523 Fire Protection under Timber Joists
WFRC. NO C102642 Fire Protection under Mezzanine Floors
Programme Part 1
The Ceiling Systems Catalogue provides an overview of our classic
mineral tile range and our special ranges: Fire Protection,
Acoustic, Health & Hygiene, Sound, Light & E-tech and Material & Design.
The programmes are available on request or can easily be downloaded at:
www.amfceilings.co.uk
Product Data Sheets
If you require special information on one of our many products,
information can be found on our website at any time. From the
homepage, click on Products and then select the product required.
www.amfceilings.co.uk
Specifications
Sample specifications can also be downloaded from the products
pages of our website. For a tailored specification, or for more detailed
product information, please contact your local AMF representative.
www.amfceilings.co.uk
All information provided is current technical data. All relevant test reports, assessments and installation guidelines are to be considered. All system details conform with current technology
and are based on the use and compatibility of AMF products and system components used in both internal and external tests. AMF accepts no liability or responsibility for use of third
party components, or for any variations to conditions stipulated in test data. We recommend not to mix production batches on jobs.
12/2010
25/25