FIRE RESISTANCE: Aluminium sheeting
is a non-combustible and non-flammable material. It is also non-sparking.
HAIL
RESISTANCE: Aluminium profiled building sheet is shatter-proof
and consequently wll not disintegrate when hit by hailstones. Aluminium has a
high resistance to denting due to its elasticity.
LIGHTNING: Metal covered and metal frame buildings offer the safest possible shelter during electrical storms.
Correctly earthed aluminium,because of its high electrical conductivity, offers excellent protection from lighting damage. It is, however, always recommended that aluminium -and NOT COPPER -lighting conductor systems should always be used on or next to an aluminium roof. This is essential to take care of the bi-metallic corrosion between aluminium and copper.
ECONOMY IN SUPPORTING STRUCTURES: The superimposed weight of aluminium building sheets on the substructure is very small. This ensures lighter supporting structurals. The purlin spacings can also be increased considerably ensuring reduction in the number of purlins.
WIND: Aluminium building sheet is amply strong to resist wind forces specified by IS:875.
THERMAL MOVEMENT: Aluminium has a relatively high coefficient of linear expansion, 0.000024 per degree centigrade. Lateral expansion of sheeting is readily accomodated by the corrugations/ troughs. Expansion and contraction in the length of long sheets should be allowed for by providing oversize holes for fixing and correspondingly large sealing washers. A variation in temperature of 37.8ocauses the length of an aluminium building sheet to change by about 0.12 mm per metre.
CONDENSATION:
In
most industrial buildings the relative humidity of the inside air is not
high enough for condensation to be a problem. However, in case of this
problem, the most effective answer is a lined roof with a continous, impervious
vapour barrier - such as bituminised aluminium foil or a suitable paint
system- on the room face of the lining. If a vapour barrier is impractible,
good ventilation of the air gap between the aluminium skin and the insulation
is essential. Condensation can arise from cooling, by radiation on a cold
clear night, of metal roofs. The Building Research Station(in Digest 132)
refers to a recorded temperature drop of -122oC
between surrounding air and roof metal. Experience indicates the good
ventilation is an adequate remedy, especially as on a cold clear night
the atmosphere tends to be dry and condensation light and readily evaporated.
Condensation drip in a building can be avoided in the design stage by
ensuring that the roof has sufficient slope.
ACOUSTIC: The drumming of rain on the metal roof should be allowed for in the design. In lined buildings, the air space between the roof materials usually reduces the noise to tolerable levels, and a significant reduction in sound can be made by the provision of an over-purlin air space or over-purlin lining.
HYGIENE: Premises intended for the storage, handling and preparation of food, cereals,etc. demand smooth, non-toxic,non-absorbent and easily cleaned surfaces. Aluminium satisfies all these requirements and may further assist in the maintenance of hygienic conditions by looking, as well as being, clean.Further, aluminium is proof against vermin and insects.
HEALTH HAZARD: Aluminium Building Sheets pose No health hazard to the users.
CRYOGENIC PROPERTIES: Low temperatures have the effect of improving the mechanical and elastic properties of aluminium. At sub-zero temperatures, the strength of aluminium alloys is higher than at room temperatures, the strength of aluminium alloys is higher that at room temperature, without rendering the alloy brittle; the ductility remains as high and sometimes higher than at room temperature.
From 0oC down to about -73oC, the differences are, however, negligible; at -196oC, tensile and yield strengths average 30% and 20% respectively higher than at room temperature. At -268oC, these increase to the vicinity of 50% and 35%.
Aluminium profiled building sheet is an excellent material for cladding applications in the extremes of cold.
RESALE VALUE: Unlike other competitive materials, aluminium building sheets fetch very high returns on scrap even after prolonged usage.
APPEARANCE: Aluminium profiled building sheet can look outstanding in its simplest form - plain mill finish. It provides a pleasing architectural beauty to all kinds of buildings with a touch of distinctive modernity.
Aluminium Building Sheet can be used extensively and economically as a roof and side/wall cladding material in the following areas:
HAIL
RESISTANCE: Aluminium profiled building sheet is shatter-proof
and consequently wll not disintegrate when hit by hailstones. Aluminium has a
high resistance to denting due to its elasticity.LIGHTNING: Metal covered and metal frame buildings offer the safest possible shelter during electrical storms.
Correctly earthed aluminium,because of its high electrical conductivity, offers excellent protection from lighting damage. It is, however, always recommended that aluminium -and NOT COPPER -lighting conductor systems should always be used on or next to an aluminium roof. This is essential to take care of the bi-metallic corrosion between aluminium and copper.
ECONOMY IN SUPPORTING STRUCTURES: The superimposed weight of aluminium building sheets on the substructure is very small. This ensures lighter supporting structurals. The purlin spacings can also be increased considerably ensuring reduction in the number of purlins.
WIND: Aluminium building sheet is amply strong to resist wind forces specified by IS:875.
THERMAL MOVEMENT: Aluminium has a relatively high coefficient of linear expansion, 0.000024 per degree centigrade. Lateral expansion of sheeting is readily accomodated by the corrugations/ troughs. Expansion and contraction in the length of long sheets should be allowed for by providing oversize holes for fixing and correspondingly large sealing washers. A variation in temperature of 37.8ocauses the length of an aluminium building sheet to change by about 0.12 mm per metre.
CONDENSATION:
In
most industrial buildings the relative humidity of the inside air is not
high enough for condensation to be a problem. However, in case of this
problem, the most effective answer is a lined roof with a continous, impervious
vapour barrier - such as bituminised aluminium foil or a suitable paint
system- on the room face of the lining. If a vapour barrier is impractible,
good ventilation of the air gap between the aluminium skin and the insulation
is essential. Condensation can arise from cooling, by radiation on a cold
clear night, of metal roofs. The Building Research Station(in Digest 132)
refers to a recorded temperature drop of -122oC
between surrounding air and roof metal. Experience indicates the good
ventilation is an adequate remedy, especially as on a cold clear night
the atmosphere tends to be dry and condensation light and readily evaporated.
Condensation drip in a building can be avoided in the design stage by
ensuring that the roof has sufficient slope.ACOUSTIC: The drumming of rain on the metal roof should be allowed for in the design. In lined buildings, the air space between the roof materials usually reduces the noise to tolerable levels, and a significant reduction in sound can be made by the provision of an over-purlin air space or over-purlin lining.
HYGIENE: Premises intended for the storage, handling and preparation of food, cereals,etc. demand smooth, non-toxic,non-absorbent and easily cleaned surfaces. Aluminium satisfies all these requirements and may further assist in the maintenance of hygienic conditions by looking, as well as being, clean.Further, aluminium is proof against vermin and insects.
HEALTH HAZARD: Aluminium Building Sheets pose No health hazard to the users.
CRYOGENIC PROPERTIES: Low temperatures have the effect of improving the mechanical and elastic properties of aluminium. At sub-zero temperatures, the strength of aluminium alloys is higher than at room temperatures, the strength of aluminium alloys is higher that at room temperature, without rendering the alloy brittle; the ductility remains as high and sometimes higher than at room temperature.
From 0oC down to about -73oC, the differences are, however, negligible; at -196oC, tensile and yield strengths average 30% and 20% respectively higher than at room temperature. At -268oC, these increase to the vicinity of 50% and 35%.
Aluminium profiled building sheet is an excellent material for cladding applications in the extremes of cold.
RESALE VALUE: Unlike other competitive materials, aluminium building sheets fetch very high returns on scrap even after prolonged usage.
APPEARANCE: Aluminium profiled building sheet can look outstanding in its simplest form - plain mill finish. It provides a pleasing architectural beauty to all kinds of buildings with a touch of distinctive modernity.
Aluminium Building Sheet can be used extensively and economically as a roof and side/wall cladding material in the following areas:
-
GENERAL
- Industrial Buildings
- Warehouses/Godowns/Storage Sheds
- Aircraft Hangers
- Conveyor Gantry Housing
- Power Plants
- Theatre Halls
- Community Centres
- Cold Storage Sheds
- Rural Housing
- Poultry Cages
- Green Houses/Garden Houses
- Patio Cover
-
SPECIAL
- Prefabricated building for residential accomodation, site office, military/police barrack, small godown, motorgarage,primary school,medical dispensary etc.
- Exhibition Pavilion Stalls
- Bunk Houses
- Tents
- Insulation protection of fuel storage tanks and industrial boilers
- Permanent Awnings in Ships and Streamers.
-
INNOVATIVE
- Wall Panels for high rise buildings
- Interior Partition Walls
- False ceiling for large hall, etc.
- Insulation bonded sandwich panels
- Prepainted/Anodised building sheets for decorative applications.
-
GENERAL USAGE
- Roof and Side cladding of all kinds of industrial shed/warehouses
- Aircraft hangers/conveyor gantry housing
- Prefabricated buildings/Bunk houses/Tents/Kiosks/Exhibition pavilions
- Ship awning/Boiler & fuel storage tank insulation cover
- Wall panels for high rise buildings/partition walls/false ceiling for large halls.
