MULTILAYER ACOUSTIC WALL PANELS PWS-WA 120
|plate thickness||120 mm|
|effective width||1150 mm|
|overall width||1170 mm|
|weight 1m 2||22.85 kg|
|min plate length||2.0 mb|
|max board length||see – plate lengths|
|sheet thickness||0.5 mm|
|type of external profiling||T – micro-trapezoidal|
V – micro wave
|coatings||polyester glossy / matt, polyurethane, HPS200, aluzinc|
|accessories||fastening systems, gaskets, flashings|
|heat transfer coefficient – Uc (W / m2K)||0.33|
|fire resistance||EI30 / EW120|
(o → i)
|fire spread rate / reaction to fire||NRO / A2-s1, d0|
|acoustic insulation (dB)||33|
|sound absorption (αw)||0.65|
Recommendations for the selection of boards in the context of thermal loads
When designing, the temperature differences between the sandwich panel facings should be taken into account. The temperature gradients resulting from the difference in temperature between the outside temperature T 1 and the inside temperature T 2 depend on several factors:
- purpose of the facility (temperature range inside the facility – T 2 )
- object location – location in relation to the sun
- color of the outer cladding (T 1 ).
Depending on latitude, altitude and distance from the sea on the European continent, four different levels of winter temperature (T1 – external cladding) are used:
- 0, -10 o C,
- 0, -20 o C, (e.g. Poland)
- 0, -30 o C, (e.g. Scandinavian countries)
The temperature of the external cladding for roof panels covered with a layer of snow cover is 0 ° C.
For the calculations, the outside temperature in winter was assumed to be -20 o C.
The temperature of the outer cladding T 1 is the maximum in summer and depends on the color and degree of reflection of the surface. The values of T 1 , which are the minimum for the Ultimate State (ULS) design and relevant for the Service Limit State (SLS) design, are taken as follows:
- very bright colors R G = 75-90 T 1 = +55 o C
- bright colors R G = 40-74 T 1 = +65 o C
- dark colors R G = 8-39 T 1 = +80 o C
where R G – is the degree of reflection of the radius in relation to magnesium oxide = 100%
The table below presents a classification broken down into color groups for individual colors available in the assortment of Pruszyński Sp. z o. o
Permissible panel lengths depending on the cladding color (minimum length – 2.5 m) for single-span systems.
|Color group||COLOR||max length (m) *|
very bright colors
|RAL : 1015, 7035, 9001, 9002, 9010||14||14|
|RAL : 1002, 1003, 1004, 1014, 1017, 1019, 1021, 1023, 1035, 2000, 2003, 2004, 2008, 2009, 5012, 5018, 5024, 6018, 6021, 6033, 7000, 7037, 7040, 9006, 9022||9||9|
|RAL : 3000, 3002, 3003, 3005, 3011, 3013, 5002, 5005, 5009, 5010, 5011, 5022, 6000, 6003, 6005, 6011, 6020, 6029, 7015, 7016, 7022, 7024, 8016, 8017, 8023, 9005, 9007|
RR : 750, 011, 028, 033, dark walnut, golden oak
* length resulting from the limitation of the maximum extension / shortening of the slab
NOTE – Group III – dark colors
Considering that dark colors in Group III are subject to much greater thermal stress than very bright and light colors in Groups I and II, special care should be taken when designing that the following conditions are met:
- the fixing method and the static system must be in accordance with the tables of permissible loads and spans (criteria met – ultimate limit state, limit state for use) *
- limit the maximum length of the boards according to the manufacturer’s recommendations **
- take installation temperature into account ***
* For panels in dark colors, single-span systems are recommended; otherwise, deformations of the external cladding of the slab may occur on the intermediate supports, not approved by the Investor. The waves in question meet the requirements of PN EN 14509 in terms of permissible deviations, however, they may be the cause of a complaint.
** The maximum board lengths should be in accordance with the manufacturer’s guidelines, depending on the type of board and their application (roof / wall) – see LENGTHS .
*** Installation of dark colored panels is possible at temperatures from 10 o C to 35 o C. This condition must be strictly observed. Installation at temperatures lower than 10 ° C (or higher than 35 ° C) may lead to deformation and permanent damage of the slab during the building’s operation (and in extreme cases also during assembly). In this case, deformation and damage to the panel are caused by high elongation of the cladding (e.g. in summer temperatures) in relation to the initial length (cladding length during installation).
Installation of panels in light and very light colors is possible in the temperature range from +5 o C to +35 o C.
Recommended means of transport for sandwich panels:
- a truck (truck tractor + semi-trailer with a length not shorter than the length of the loaded plates) with the semi-trailer open or allowing side loading on both sides along its entire length
- the weight of the load must not exceed the maximum load capacity of the set,
- transport belts should be placed on the load at a distance of max. every 3 m, but not less than 2 belts for one bundle – the tension of the belts must not cause deformation of the panels.
MAINTENANCE AND WASHING
Sandwich panels should be stored in packages (posts), it is allowed to store a maximum of two packages on top of each other.
The table below shows the max. number of boards that can be placed in one package.
|maximum number of boards stacked on top of each other|
- It is recommended to store the boards on an even surface (square, hall) on polystyrene joists or sleepers, which must be spaced at most every 2.5 m (for boards with a total length of up to 2.5 m, at least 3 underlays should be used).
- It is allowed to store a maximum of two packages of boards up to 6 meters on top of each other, in the case of packages of boards larger than 1 meter, they should be stored individually. All plate packages must be stored on an even surface with the possibility of drainage.
- During the storage of panels on the construction site, they should be protected against mechanical damage, exposure to UV rays, aggressive environment (acids, fertilizers, salts and other corrosive agents), precipitation, strong wind and others.
- It is recommended to store the packages under a roof in ventilated rooms
- The boards should be stored on an even surface (square, hall) on joists, polystyrene or wooden sleepers, which must be spaced at most every 2.5 m (for boards with a total length of up to 2.5 m, at least 3 sleepers should be used. ).
- Protective films are used to additionally protect the surface of the panels against mechanical damage, stresses and impacts that may occur during transport or handling. The foils never release you from the obligation to properly protect the panels during storage.
- It is recommended to remove the protective film before mounting the elements on the facade or roof of the building. The foil should be removed when the air temperatures are positive, because the adhesive delaminates at negative temperatures and some of its components may remain on the sheet.
- Improper method of sheet storage may cause difficulties in removing the protective foil and leave traces of glue on the surface of the boards. In such cases, complaints about the remnants of the adhesive from the protective film will not be considered by the Manufacturer.
- In the case of panels with hidden fasteners, make sure that the foil is removed from the inside of the longer lock before assembly.
In the case of wall panels with visible fastening (applies to PIR panels), the upper side of the panels in the package is the façade side, which should be taken into account in particular!
MAINTENANCE AND WASHING
In order to extend the service life of roofs and facades made of coated metal sheets, they should be regularly inspected and maintained.
- Inspection – Once a year (preferably in spring), the roof / facade should be inspected for early detection of possible damage.
- Sheet cleaning – Roofs / facades made of coated sheet metal require cleaning at least once a year. Dirt settling on the sheet can cause uneven discoloration (the result of uneven exposure to UV rays), and also reduce corrosion resistance (dirt retains moisture on the sheet and gradually damages it). Dirty and stained places can be cleaned with a soft brush and water (temperature max. 60 ° C). If necessary, it is allowed to add a mild detergent to the water (pH 6 ÷ 7, max. 10% solution). Pressurized water (max. 100 bar) can also be used for cleaning, however, the water jet cannot be used too close to the board surface (min. 30 cm), and it cannot be directed perpendicularly to the surface. At the connectors, the stream of water should be directed downwards so that to avoid the ingress of pressurized water into the gaps around the fittings. Old board coatings must be handled with extreme care. Washing should be carried out from the top downwards and the cleaned area should be immediately and thoroughly rinsed with clean water.
- Scouring powders, nitro solvents, chlorine solutions, aromatic agents as well as agents containing ammonium chloride or sodium salts must not be used.
- Damage – Any damage during the warranty period must be consulted with the Roof / facade Contractor and may be made only with his written consent. Damage to small areas is repaired with air-drying paints, while painting large areas is generally only possible with special industrial paints suitable for renovation of coverings. The surface to be painted should be limited only to the places that require it (scratches to the metal layer, corrosion centers, etc.). Preparation of the surface for painting should be performed according to generally accepted rules. Any signs of corrosion should always be thoroughly removed – preferably with special brushes or fine sandpaper. Then, the surface to be repaired must be thoroughly dusted, degreased and cleaned. To degrease the surface, you can use gasoline or water with the addition of surfactants (preferably with the addition of 1-2% ammonia solution). The areas to be repaired may show differences in color compared to the original colors of the sheets due to the natural influence of atmospheric phenomena (paint aging under the influence of UV radiation).
- CAUTION – During inspection, cleaning, maintenance and repairs, safety rules must be strictly adhered to.
The colors below may differ from reality.
- * – available coatings with a thickness of 0.50 mm
- ** – available coatings with a thickness of 0.50 and 0.70 mm
- *** – coatings available in thicknesses of 0.50, 0.70 and 1.00 mm