Roof and Wall - Site Assembled Systems Steel and Aluminium

Transcription

1 Corus Panels and Profiles Roof and Wall - Site Assembled Systems Steel and Aluminium

2 Introduction The total envelope solution 2 Roof & Wall - Site Assembled Systems

3 Introduction Corus Panels and Profiles operate from factories in South Wales and Gloucestershire and have served clients in the construction industry for over 40 years. The comprehensive Corus Panels and Profiles product range includes: Composite roof and wall panels Architectural modular panels (facades) Structural roof decking Composite Flooring Systems Standing Seam Roofing Fire protection systems Acoustic Systems Bespoke Solutions External Sales An experienced team of specialist sales consultants is available to support specifiers and contractors both in the UK and overseas. Technical Support Comprehensive technical support is available to offer advice on the design and performance of Corus Panels and Profiles products. Research and Development Corus Panels and Profiles has access to world class testing and development facilities. Roof & Wall - Site Assembled Systems 3

4 Standard Roof Profile Range Standard roof profile range Corus Panels and Profiles offer an attractive and economic range of roof profiles to meet both the aesthetic and structural requirements of the designer. R13.5/3 Cover width (Alternative 980) 19 R32/1000 Cover width (Alternative 75.38) 32 R35A Cover width CLS Laundry, Newton Abbott. R38A R40 R46 R60 Clipfix 750 Seam Loc ALU SEAM 75 Cover width Cover width Cover width Cover width Cover width Cover width Cover width Load/span figures These tables are based on a total dead and super imposed load of 1.20 kn/m 2 and a deflection limit of L/200. The quoted spans are more onerous than the profiles maximum allowable spans when subjected to wind suction loads. Therefore, the tables can be used as a conservative guide for loading in either direction. For differing conditions please consult our full load tables and/or consult our Technical Services Department. Curving Self curving can induce stress marking in the sheet. The figures shown have been chosen with aesthetics in mind and therefore minimise visible induced stress. Self curved panel ends laps will birdmouth slightly, therefore long sheet lengths are recommended to reduce the number of end laps. Factory curved data relates to a single convex curve. Information regarding double or wave curves must be obtained from Corus Panels and Profiles. Finishes The data held within this table concerns itself with our standard product range. Non standard materials, gauges, colours and coatings are available to special order, subject to quantity required and extended lead time. See page 10 for special roof profiles. Space Decks Headquarters, Chard. 4 Roof & Wall - Site Assembled Systems

5 Standard Roof Profile Range Material Gauge (mm) Weight (kg/m 2 ) Load/Span max span (mm) SS Load/Span max span (mm) MS Minimum self curve (m) Minimum factory curve (mm) Minimum Roof Pitch R13.5/3 S (h), 30 (p), 35 (mp) 1000* 10 A (sa/ca), 25 (ma) 1000* 10 R32/1000 S (h), 50 (p), 55 (mp) A (sa/ca), 45 (ma) R35A S (h), 50 (p), 55 (mp) A (sa/ca), 45 (ma) R38A S (h), 50 (p), 55 (mp) A (sa/ca), 45 (ma) R40 S (h), 50 (p), 55 (mp) A (sa/ca), 45 (ma) R46 S (h), 65 (p), 70 (mp) A (sa/ca), 60 (ma) Key S Steel A Aluminium h HPS200 by Corus p Colorcoat PVDF mp Metallic PVDF/Celestia by Corus sa Stucco embossed aluminium ca Coated aluminium ma Metallic coated aluminium SS Single span MS Multi span Before ordering it is important to confirm with Corus Panels and Profiles which side of the profile carries the main surface finish. All profiles comply to current MCRMA Tolerances. * Factory curve only applies to 980 cover R13.5/3. R60 S (h), 80 (p), 85 (mp) NA 4 A (sa/ca), 75 (ma) NA 4 Clipfix 750 S (h) N/A 1 A (sa), 55 (ca/ma) N/A 1 Seam-loc S (h) (h) (p) (mp) convex ALU-SEAM A (sa/ca), 35 (ma) convex Del Monte Unit, Team Valley, Tyneside. Roof & Wall - Site Assembled Systems 5

6 Standard Wall Profile Range Standard wall profile range C13.5/3 C19 C32/1000 C32S C35A C38A Cover width (Alternative 980) Cover width Cover width (Alternative 75.38) Cover width Cover width Cover width Corus Panels and Profiles offer an attractive and economic range of wall profiles to meet both the aesthetic and structural requirements of the designer. For flexibility of design these profiles can be reversed. In this situation the equivalent roof profile ( R suffix) should be specified with side lap installed as per the roofing method. Curving Self curving can induce stress marking in the sheet. The figures shown have been chosen with aesthetics in mind and therefore minimise visible induced stress. End laps will birdmouth slightly on self curved cladding. Factory curved data relates to a single convex curve. Information regarding double or wave curves must be obtained from Corus Panels and Profiles. Horizontal applications Corus Panels and Profiles have indicated the profiles that, through experience have given good service when laid horizontally. This being based on the necessary greater attention being paid to in-plane steelwork tolerances. C46 C Cover width C60 Cover width 800 WP Finishes The data held within this table concerns itself with our standard product range. Non standard materials, gauges, colours and coatings are available by special order, subject to quantity required and extended lead time. Load/span figures These tables are based on an effective positive wind load of 1.00 kn/m 2 and a deflection limit of L/150. The quoted spans are more onerous than the profiles maximum allowable spans when subjected to identical negative pressure/wind suction loads. Therefore, the tables can be used as a conservative guide for loading in either direction. For differing conditions please consult our full load tables and/or consult our Technical Services Department. See page 12 for special wall profiles. Attractive range of profiles Industrial Units 1& 2, New York, Tyneside. 6 Roof & Wall - Site Assembled Systems

7 Standard Wall Profile Range Material Gauge (mm) Weight (kg/m 2 ) Load/Span max span (mm) SS Load/Span max span (mm) MS Minimum self curve (m) Minimum factory curve (mm) Suitable for Horizontal use C13.5/3 S (h), 30 (p), 35 (mp) 1000* N (h), 30 (p), 35 (mp) 1000* Y A (sa/ca), 25 (mp) 1000* Y C19 S (h), 30 (p), 35 (mp) 350 N (h), 30 (p), 35 (mp) 350 Y A (sa/ca), 25 (ma) 350 Y C32/1000 S (h), 50 (p), 55 (mp) 400 N (h), 50 (p), 55 (mp) 400 Y A (sa/ca), 45 (ma) 400 Y C32S S (h), 50 (p), 55 (mp) NA N (h), 50 (p), 55 (mp) NA Y A (sa/ca), 45 (ma) NA Y C35A S (h), 50 (p), 55 (mp) 400 N (h), 50 (p), 55 (mp) 400 Y A (sa/ca), 45 (ma) 400 Y Key S Steel A Aluminium h HPS200 by Corus p Colorcoat PVDF mp Metallic PVDF/Celestia by Corus sa Stucco embossed aluminium ca Coated aluminium ma Metallic coated aluminium SS Single span MS Multi span Before ordering it is important to confirm with Corus Panels and Profiles which side of the profile carries the main surface finish. All profiles comply to current MCRMA Tolerances. * Factory curve only applies to 980 cover R13.5/3. C38A S (h), 50 (p), 55 (mp) 400 Y A (sa/ca), 45 (ma) 400 Y C46 S (h), 65 (p), 70 (mp) 400 N (h), 65 (p), 70 (mp) 400 Y A (sa/ca), 60 (ma) 400 Y C60 S (h), 80 (p), 85 (mp) NA N (h), 80 (p), 85 (mp) NA Y A (sa/ca), 75 (ma) NA Y WP40 S (h), 70 (p), 75 (mp) 400 N A (sa/ca), 65 (h) 400 N Suncrest Surrounds Ltd., Co.Durham. Roof & Wall- Site Assembled Systems 7

8 Standard Lining Profiles Range Standard lining profiles range Corus Panels and Profiles offer a range of lining panels specifically developed to be compatible with our outer sheet product range thus allowing the accommodation of modular rooflights. CL6/914 CL6/914 Perf (20%) Cover width Lengths Being roll formed, long lengths are available but for practical site handling purposes with the 0.40 mm gauge options we would suggest these are kept to a maximum of 5m. LP1000 LP1000 Perf (21.5%) Cover width Vapour Barrier All non-perforated profiles provide a side lap which can be sealed to provide a vapour check. A correctly sealed lining panel will easily meet the 10m 3 /hr/m 50 pascals air tightness requirement of the new building regulations. 1000/ /19 Perf (33%) C19 C19 Perf (20%) RL32/1000 RL32/1000 Perf (22%) Cover width Cover width Cover width Spans In roofing conditions, the spanning capabilities of the lining panels are largely dependent upon their self-weight and the weight of the insulation they are required to support. In normal conditions with 0.40mm gauge liners double span capabilities of up to 2m can be achieved. However, at spans approaching maximum it may be necessary to mechanically fix side laps and/or reverse the normal side lap to minimise separation. The span for non fragility rating may be less than span shown in tables. Contact our Technical Department for fixing details to comply with ACR(M)001:2000. Fire Rating All non perforated lining sheets provide a fire rating of Class 1 to BS476: Part 7 and Class 0 in accordance with current Building Regulations. Due to the nature of pan perforating, some undulations may be evident in the final product. 60 o 6.3 mm 4.5mm diameter holes at 6.3mm triangular centre Pattern open area - 46% Curving Self curving can induce stress marking in the sheet. The figures shown have been chosen with aesthetics in mind and therefore minimise visible induced stress. Figures are also based on the profile being fitted above the purlin on a convex curved roof. Factory curved data relates to a single convex curve. Information regarding double or wave curves must be obtained from Corus Panels and Profiles. Full design and installation guide available 8 8 Secret Roof & Fix Wall Product - Site Selector Assembled Systems

9 Standard Lining Profiles Range Material Gauge (mm) Weight (kg/m 2 ) Load/Span max span (mm) SS Load/Span max span (mm) DS Minimum self curve (m) Minimum factory curve (mm) Working platform Compatible outer sheets if rooflights incorporated CL6/914 S (le) 350 N R/C38A CL6/914 S (le) 350 N R/C38A Perf (20%) LP1000 S (le) 350 N R/C32/1000 LP1000 S (le) 350 N R/C32/1000 Perf (21.5%) R /19 S (le) 250 N Clipfix 1000/19 S (le) 250 N Clipfix Perf (33%) A (ca) 250 N Clipfix C19 S (h), 30 (p/le), 35 (mp) 350 N R/C19 R/C38A (profile pitch compatible) A (sa/ca), 25 (ma) 350 N R/C19 R/C38A (profile pitch compatible) C19 S (h), 30 (p/le), 35 (mp) 350 N R/C19 Perf (20%) R/C38A (profile pitch compatible) A (sa/ca), 25 (ma) 350 N R/C19 R/C38A (profile pitch compatible) RL32/1000 S (h), 50 (p/le), 55 (mp) 400 Y* R/C32/1000 R40 A (sa/ca), 45 (ma) 400 Y R/C32/1000 RL32/1000 S (h), 50 (p/le), 55 (mp) 400 N R/C32/1000 Perf (22%) R40 A (sa/ca), 45 (ma) 400 N R/C32/1000 R40 R40 R40 Key S Steel A Aluminium h HPS200 by Corus p Colorcoat PVDF mp Metallic PVDF/Celestia by Corus sa Stucco embossed aluminium ca Coated aluminium ma Metallic coated aluminium SS Single span DS Double span Before ordering it is important to confirm with Corus Panels and Profiles which side of the profile carries the main surface finish. All profiles comply to current MCRMA Tolerances. Only available with Clipfix. * Maximum 2m centres suggested platform for ALU-SEAM roofs without lights Maximum 1.8m centres suggested platform for ALU-SEAM roofs without lights Finishes The data held within this table concerns itself with our standard product range. Non standard materials, gauges, colours and coatings are available to special order, subject to quantity required and extended lead time. Acoustics To meet the increasing demand for noise reduction in factories and public buildings Corus Panels and Profiles can supply lining panels with acoustic perforations incorporated in the flat pans of the profile. When correctly installed, these panels can provide a high level of acoustic absorbency instead of the reflective finish normally presented by plain metal sheeting. Whilst other patterns can be achieved the standard pattern is illustrated in the table opposite. Percentage open areas are highlighted next to the relevant profiles. See page 14 for special lining profiles. Space Decks Headquarters, Chard. Roof & Wall - Site Assembled Systems 9

10 Lining Trays & Special Roof Profiles Structural lining trays Corus Panels and Profiles can offer a structural lining tray that is suitable for both roof and wall cladding applications spanning across the main steels and omitting the need for HL600/130 purlins or cladding rails. Load/span figures These figures are based on a maximum load of 1.50kN/m 2 and a deflection limit of L/200. HL600/130 Perf (36%) Cover width 600 Material Gauge (mm) Weight (kg/m 2 ) Load/Span max span (mm) SS Load/Span max span (mm) DS Working platform HL600/130 S Y HL600/130 S N Perf (36%) Special roof profiles In order to offer the specifier more choice, it is possible to produce some of our more specialist sections adapted to suit roof cladding applications. The necessary modifications render these profiles special and therefore may be subject to a minimum order requirement and extended lead times. R /19 Protile R100 Cover width Cover width Cover width For further information please contact our Sales Department. Load/span figures These tables are based on a total dead and super imposed load of 1.20 kn/m 2 and a deflection limit of L/200. The quoted spans are more onerous than the profiles maximum allowable spans when subjected to wind suction loads. Therefore, the tables can be used as a conservative guide for loading in either direction. For differing conditions please consult our full load tables and/or consult our Technical Services Department. Gauges The data held within this table concerns itself with the minimum recommended gauges. Different gauges, colours, coatings etc. can be made available subject to special order See page 4 for standard roof profiles. Full design and installation guide available 10 Roof & Wall - Site Assembled Systems

11 Lining Trays & Special Roof Profiles Material Gauge (mm) Weight (kg/m 2 ) Load/Span max span (mm) SS Load/Span max span (mm) MS Minimum self curve (m) Minimum factory curve (mm) Minimum roof pitch R19 S (h), 30 (p), 35 (mp) A (sa/ca), 25 (ma) /19 Protile S NA 10 R100 S (h), 120 (p), 125 (mp) NA 4 A (sa/ca), 115 (ma) NA 4 Key S Steel A Aluminium h HPS200 by Corus p Colorcoat PVDF mp Metallic PVDF/Celestia by Corus sa Stucco embossed aluminium ca Coated aluminium ma Metallic coated aluminium SS Single span MS Multi span DS Double span Contact technical department Before ordering it is important to confirm with Corus Panels and Profiles which side of the profile carries the main surface finish. All profiles comply to current MCRMA Tolerances. Above: Winchester House School, Sports Hall, Winchester. Right: Zenith, Basildon. Roof & Wall - Site Assembled Systems 11

12 Special Wall Profiles Special wall profiles CH Cover width Arcline 40 Cover width In order to offer the specifier more choice, it is possible to produce some of our more specialist sections adapted to suit wall cladding applications. The necessary modifications render these profiles special and therefore may be subject to minimum order requirements and extended lead times. For further information please contact our Sales Department. Material Gauge (mm) Weight (kg/m 2 ) Load/Span max span (mm) SS Load/Span max span (mm) MS Gauges The data held within this table concerns itself with the minimum recommended gauges. Different gauges, colours, coatings etc. can be made available subject to special order. Key See page 6 for standard wall profiles. Minimum self curve (m) Minimum factory curve (mm) Horizontal Applications CH47 S (h), 80 (p), 85 (mp) NA Horizontal only S Steel A Aluminium h HPS200 by Corus p Colorcoat PVDF mp Metallic PVDF/Celestia by Corus sa Stucco embossed aluminium ca Coated aluminium ma Metallic coated aluminium SS Single span MS Multi span Before ordering it is important to confirm with Corus Panels and Profiles which side of the profile carries the main surface finish. Arcline 40 S (h), 60 (p), 65 (mp) NA Y All profiles comply to current MCRMA Tolerances. Full design and installation guide available 12 Roof & Wall - Site Assembled Systems

13 Special Wall Profiles Left: The Enigma Building, Milton Keynes. Above: Horizon Point, Hemel Hempsted. Roof & Wall - Site Assembled Systems 13

14 Special Lining Profiles Special lining profiles CL3/ CL3/1000 Perf (27%) In order to offer the specifier more choice, it is possible to produce some of our more specialist sections adapted to suit wall cladding applications. The necessary modifications render these profiles special and therefore may be subject to minimum order requirements and extended lead times. For further information please contact our Sales Department. Material Gauge (mm) Weight (kg/m 2 ) Load/Span max span (mm) SS Load/Span max span (mm) DS Minimum self curve (m) Gauges The data held within this table concerns itself with the minimum recommended gauges. Different gauges, colours, coatings etc. Key can be made available subject to S Steel A Aluminium special order See page 8 for standard lining profiles. Minimum factory curve (mm) CL3/1000 S N R32/1000 & R40 CL3/1000 S N R32/1000 & R40 Perf (27%) Working platform Compatible outer sheets if rooflights incorporated h HPS200 by Corus p Colorcoat PVDF mp Metallic PVDF/Celestia by Corus sa Stucco embossed aluminium ca Coated aluminium ma Metallic coated aluminium SS Single span DS Double span Before ordering it is important to confirm with Corus Panels and Profiles which side of the profile carries the main surface finish. All profiles comply to current MCRMA Tolerances. * Factory curve only applies to 980 cover R13.5/3. Above: Space Decks Headquarters, Chard. 14 Roof & Wall - Site Assembled Systems

15 Pressed Profiles Pressed profiles, wall cladding, fascias and soffit lining Pressed profiles are manufactured by brake press, which offers flexibility in their design but limits the overall length to 3.6metres. The brake press tool creates the rib profile which means that the shape of this is fixed, however the PR8 145 Cover width spacing of ribs may be varied to create interesting aesthetic effects. Thus the crown and pitch are variable but the rib shape is not. The minimum pitch available for each profile is shown opposite. PM13 Cover width Pressed profiles are used for fascias, soffits and to create architectural effects such as infill panels in wall cladding PL19 Cover width PG22 Cover width PS Cover width Material 78 Gauge (mm) Weight (kg/m 2 ) Load/Span max span (mm) SS Load/Span max span (mm) DS Minimum self curve (m) PR8 S PM13 S This profile cannot be end lapped PL19 S PG22 S PS47 S Minimum pitch (mm) Key S Steel SS Single span DS Double span Before ordering it is important to confirm with Corus Panels and Profiles which side of the profile carries the main surface finish.. All profiles comply to current MCRMA Tolerances. Finishes Lining enamel HPS200 by Corus Colorcoat PVDF Metallic PVDF Celestia by Corus Stucco embossed aluminium Coated aluminium Metallic coated aluminium Above: Newcastle Central Train Station, Newcastle-Upon-Tyne. Roof & Wall - Site Assembled Systems 15

16 Firewall Systems Fire protection design guide using steel wall cladding The use of insulated profiled steel cladding sheets is common practice for external wall constructions on a variety of different building types. However, in certain situations these walls are required to provide fire protection and in these instances specific Building Regulations have to be complied with. Corus Panels and Profiles offer a range of nonloadbearing fully insulated fire resistant wall cladding systems available to meet Building Regulation requirements for one hour and four hour rated external boundary walls and one hour separating/partitional wall conditions. This publication has been produced to offer guidance on the methods developed for fire containment when using our coated steel cladding products. General Construction Requirements Support Structures Sheeting Rails To accommodate the thermal expansion generated during fire all sheeting rails must be fixed to support cleats with slotted holes and bolts used must have both steel and plastic low melt washers under the head. The rails should be positioned to create maximum support centres for the firewall not greater than 2m. Allowance must be made for expansion in the rail length and span condition for the rails themselves should be single but may be sleeved to achieve continuity. Structural Frame When sheeting rails heat up during a fire they cease to function as structural members. Therefore, to prevent the wall moving downwards under its own self weight either a support at the head or base of the wall is required. All Corus Panels and Profiles firewalls can be designed to be supported from eaves beams/stanchions or rafters and posts if situated on a gable end. However, these elements must be protected using conventional fire protection materials to give the same period of fire resistance as the firewall. Cavity Barriers Where a cavity is created within the wall construction cavity barriers are required to be introduced at positions identified by Building Regulations Approved Document B. On firewalls which use non-combustible mineral fibre insulant and where the design allows the quilt/board to effectively seal the cavity against the steel sheeting no additional barrier is necessary. However, on systems where the design incorporates an air gap a cavity barrier is required positioned to the full height of the wall at intervals not exceeding 20m. The basic technical performance requirement for a cavity barrier is that it must maintain integrity for 30 minutes and provide at least 15 minutes fire insulation as determined by test in accordance with BS476 Part 22. Cavity barriers should be fixed in a manner that prevents displacement under normal service conditions or in a fire. 16 Firewall Systems

17 Introduction Firewall System Selector Construction Fire resistance Insulation Exposed Boundary CP&P WFRC* Firewall System Orientation Type period (stability criteria face distance drawing certificate and integrity (mins.) No. No. -hours) Rockfibre Trinsul Vertical Outside rail 4 60 Either within 1m T1155 C Firewall face Double Skin Firewall with Instaloc 40 Vertical Outside rail 4 15 Inside 1m or T1007 C Spacer System & face more Glassfibre Quilt Double Skin Firewall with Instaloc 40 Vertical Outside rail 4 15 Inside 1m or T1014 C Spacer System & face more Rockfibre Quilt Double Skin Firewall with Instaloc 40 Vertical Outside rail 4 30 Inside 1m or Spacer System & face more Rockfibre Quilts Paramount Systems Vertical Outside rail 4 30 Inside 1m or face more Structural Liner Tray Vertical Liner Tray 4 15 Inside 1m or T1150 C54353 Firewall face more Structural Liner Tray Vertical Liner Tray 4 60 Either Within T1151 C80289 Firewall face 1m Double Skin Firewall Horizontal Inside rail 4 15 Inside 1m or T1003 C Quilt Insulated face more Double Skin Firewall Vertical Inside rail 4 30 Either Within T1170 C52869 Quilt Insulated face 1m * Warrington Fire Research Centre Limited. Firewall Systems 17

18 4 Hour 1 Hour Insulation 4 Hour Integrity Rockfibre Trinsul Firewall (vertical outside rail) Corus Panels and Profiles Rockfibre Trinsul outside rail cladding system has a 1 hour fire resistance from either direction when fixed within 1 metre of relevant boundary. Insulation 80kg/m 3 nominal density profiled rockfibre trinsul insulation board. Minimum thickness to achieve 0.35W/m 2 K U value. Lining Panel Corus Panels and Profiles colorcoated galvanised steel 0.4/0.7mm thick. Sheeting Rail Sheeting rails supplied by others. The rail is not fire protected but a facility for expansion is required (slotted fixing holes). LPC Rockfibre Trinsul meets fully the requirements of part 2.2 of the LPC design guide for the fire protection of buildings Outer Cladding Corus Panels and Profiles colorcoated galvanised steel 0.5/0.7mm thick. Construction Notes All fixings and components to be steel. All outer sheet side laps must be stitched at not more than 400mm centres. Lining panel does not require stitching. Warrington Fire Research Centre number C The Building Regulations 2000 Approved Document L2 April 2002 Contact Corus Panels and Profiles Technical Department for information on the insulation thickness needed for this system to meet part L requirements. 18 Firewall Systems

19 4 Hour 15 minutes Insulation 4 Hour Integrity Double Skin Firewall with Instaloc 40 Spacer System & Glassfibre Quilt (vertical outside rail) This system is intended for use as an external wall, sited at least 1 metre from a relevant boundary. It is not suitable for partitions. Assessment of fire resistance refers to cladding system which must be supported at base or by a fire rated eaves beam. The assessment refers to non-load bearing walls. The cladding system carries no vertical load other than its own dead weight. Installation of this system to be in accordance with approved document B (Fire Spread) in the Building Regulations Insulation Glassfibre insulation quilt, minimum thickness 160mm. 10kg/m 3 nominal density. Lining Panel Corus Panels and Profiles colorcoated galvanised steel 0.4/0.7mm thick. Sheeting Rail Sheeting rails supplied by others. The rail is not fire protected but a facility for expansion is required (slotted fixing holes). Instaloc mm bracket is required with 160mm insulation. If insulation thickness is increased a minimum air gap of 40mm must be maintained. Outer Cladding Corus Panels and Profiles colorcoated galvanised steel 0.5/0.7mm thick. Construction Notes All fixings and components to be steel. All outer sheet side laps must be stitched at not more than 600mm centres and lining panels at not more than 300mm centres. The Building Regulations 2000 Approved Document L2 April 2002 Contact Corus Panels and Profiles Technical Department for information on the insulation thickness needed for this system to meet part L requirements. Original fire report by SGS Yarsley No. J88627/2 now updated by Warrington Fire Research Centre Ltd. to WFRC number C System assessment to comply with BS476 part in relation to internal fire. Stability = 240 minutes Integrity = 240 minutes Insulation = 15 minutes Firewall Systems 19

20 4 Hour 15 minutes Insulation 4 Hour Integrity Double Skin Firewall with Instaloc 40 Spacer System & Rockfibre Quilt (vertical outside rail) This system is intended for use as an external wall, sited at least 1 metre from a relevant boundary. It is not suitable for partitions. Assessment of fire resistance refers to cladding system which must be supported at base or by a fire rated eaves beam. The assessment refers to non-loadbearing walls. The cladding system carries no vertical load other than its own dead weight. Installation of this system to be in accordance with approved document B (Fire Spread) in the Building Regulations Instaloc mm bracket is required with 120mm insulation. For thicker insulation increase bracket size accordingly. The Building Regulations 2000 Approved Document L2 April 2002 Contact Corus Panels and Profiles Technical Department for information on the insulation thickness needed for this system to meet part L requirements. Insulation Rockfibre insulation quilt, minimum thickness 120mm. 23kg/m 3 nominal density. Lining Panel Corus Panels and Profiles colorcoated galvanised steel 0.4/0.7mm thick. Sheeting Rail Sheeting rails supplied by others. The rail is not fire protected so a facility for expansion is required (slotted fixing holes). Outer Cladding Corus Panels and Profiles colorcoated galvanised steel 0.5/0.7mm thick. Construction Notes All fixings and components to be steel. All outer sheet side laps must be stitched at not more than 600mm centres. Lining panels do not require stitching. Warrington Fire Research Centre number C System assessment to comply with BS476 part in relation to internal fire. Stability = 240 minutes Integrity = 240 minutes Insulation = 15 minutes 20 Firewall Systems

21 4 Hour 30 minutes Insulation 4 Hour Integrity Double Skin Firewall with Instaloc 40 Spacer System & Rockfibre Quilt (vertical outside rail) This system is intended for use as an external wall, sited at least 1 metre from a relevant boundary. It is not suitable for partitions. Assessment of fire resistance refers to cladding system which must be supported at base or by a fire rated eaves beam. The assessment refers to non-loadbearing walls. The cladding system carries no vertical load other than its own dead weight. Installation of this system to be in accordance with approved document B (Fire Spread) in the Building Regulations Insulation Two layers of 80mm thick Rockfibre insulation quilt. 23kg/m 3 nominal density. Lining Panel Corus Panels and Profiles colorcoated galvanised steel 0.4/0.7mm thick. Instaloc mm bracket is required with 160mm insulation. For thicker insulation increase bracket size accordingly. Outer Cladding Corus Panels and Profiles colorcoated galvanised steel 0.5/0.7mm thick. Sheeting Rail Sheeting rails supplied by others. The rail is not fire protected so a facility for expansion is required (slotted fixing holes). Construction Notes All fixings and components to be steel. All outer sheet side laps must be stitched at not more than 600mm centres. Lining panels do not require stitching. The Building Regulations 2000 Approved Document L2 April 2002 Contact Corus Panels and Profiles Technical Department for information on the insulation thickness needed for this system to meet part L requirements. Warrington Fire Research Centre number System assessment to comply with BS476 part in relation to internal fire. Stability = 240 minutes Integrity = 240 minutes Insulation = 30 minutes Firewall Systems 21

22 4 Hour 30 minutes Insulation 4 Hour Integrity Paramount System This system is intended for use as an external wall, sited at least 1 metre from a relevant boundary. It is not suitable for partitions. Assessment of fire resistance refers to cladding system which must be supported at base or by a fire rated eaves beam. The assessment refers to non-loadbearing walls. The cladding system carries no vertical load other than its own dead weight. Installation of this system to be in accordance with approved document B (Fire Spread) in the Building Regulations Insulation 60mm rockfibre insulation. 24kg/m 3 density. Minimum thickness to achieve 0.35W/m 2 K. U value Sheeting Rail Sheeting rails supplied by others. The rail is not fire protected but a facility for expansion is required. Spacer 60mm deep spacer system. Outer Cladding Trisomet Composite panel, 40mm thick, (PIR core) 1000mm cover width, laid vertically. Lining Panel LP1000 lining panel, 0.4mm thick. Construction Notes All outer sheet side laps must be stitched at maximum centres of 450mm. Lining panel side laps do not require stitching. Warrington Fire Research Centre number Suitable for low humidity buildings. For high humidity buildings contact our Technical Department. System assessment to comply with BS476 part in relation to internal fire. Stability = 240 minutes Integrity = 240 minutes Insulation = 30 minutes 22 Firewall Systems

23 4 Hour 15 Minutes Insulation 4 Hour Integrity Structural Liner Tray This system is intended for use as an external wall, sited at least 1 metre from a relevant boundary. It is not suitable for partitions. Assessment of fire resistance refers to cladding system which must be supported at base or by a fire rated eaves beam. The assessment refers to non-loadbearing walls. The cladding system carries no vertical load other than its own dead weight. Installation of this system to be in accordance with approved document B (Fire Spread) in the Building Regulations Liner Tray Corus Panels and Profiles HL600/130 Structural Liner Tray. Thermal Break Strip Rockfibre fire barrier strip 50mm x 35mm 240kg/m 3 density. Fastener 5.5mm diameter by 45mm long selfdrilling fastener e.g. SD3-T15-5.5x45. Side Stitching Side stitching in web at tray interlocks 400mm maximum centres. Insulation Rockfibre insulation, minimum 160mm thick 23kg/m 3 nominal density. Outer Cladding Corus Panels and Profiles External Cladding 0.5mm thick steel. Warrington Fire Research Centre number C System assessment to comply with BS476 part in relation to internal fire. Stability = 240 minutes Integrity = 240 minutes Insulation = 15 minutes The Building Regulations 2000 Approved Document L2 April 2002 The above achieves 0.35 W/m 2 K in accordance with Approved Document L2 April Firewall Systems 23

24 4 Hour 1 Hour Insulation 4 Hour Integrity Structural Liner Tray This system can be used for an external or internal partition wall, sited within 1 metre from a relevant boundary. It is suitable for partitions. Assessment of fire resistance refers to cladding system which must be supported at base or by a fire rated eaves beam. The assessment refers to non-loadbearing walls. The cladding system carries no vertical load other than its own dead weight. Installation of this system to be in accordance with approved document B (Fire Spread) in the Building Regulations Liner Tray Corus Panels and Profiles HL600/130 Structural Liner Tray. Insulation Rockfibre insulation 80mm x 100kg/m 3. Insulation Rockfibre insulation 50mm x 23kg/m 3. Fastener 5.5mm diameter by 45mm long selfdrilling fastener e.g. SD3-T15-5.5x45. Side Stitching Side stitching in web at tray interlocks 400mm maximum centres. Insulation Rockfibre insulation, minimum 30mm thick 100kg/m 3 nominal density. Outer Cladding Corus Panels and Profiles External Cladding 0.5mm thick steel. Warrington Fire Research Centre number C System assessment to comply with BS476 part in relation to internal fire. Stability = 240 minutes Integrity = 240 minutes Insulation = 60 minutes The Building Regulations 2000 Approved Document L2 April 2002 The above achieves 0.35 W/m 2 K in accordance with Approved Document L2 April Firewall Systems

25 4 Hour 15 Minutes Insulation 4 Hour Integrity Quilt Insulated Double Skin Firewall (horizontal/vertical inside rail) This system is intended for use as an external wall, sited at least 1 metre from a relevant boundary. It is not suitable for partitions. Assessment of fire resistance refers to cladding system which must be supported at base or by a fire rated eaves beam. The assessment refers to non-loadbearing walls. The cladding system carries no vertical load other than its own dead weight. Installation of this system to be in accordance with approved document B (Fire Spread) in the Building Regulations Insulation 160mm foil faced rockfibre. (WFRC number C43554). Lining Panel Corus Panels and Profiles colorcoated galvanised steel 0.4/0.7mm thick. The Building Regulations 2000 Approved Document L2 April 2002 Contact Corus Panels and Profiles Technical Department for information on the insulation thickness needed for this system to meet part L requirements. Warrington Fire Research Centre number: C Horiztonal, C Vertical. Sheeting Rail Sheeting rails supplied by others, to be 150mm minimum for 160mm foil faced rockfibre. The rail is not fire protected so a facility for expansion is required. For thicker insulation increase rail depth accordingly. Top Hat 1.60mm or 2mm zinc coated steel top hat section 45mm deep by Corus Panels & Profiles. To be fixed with self drilling/self tapping fasteners, 2 at each sheeting rail. Outer Cladding Corus Panels and Profiles colorcoated galvanised steel 0.5/0.7mm thick. Can be fitted horizontally as shown or fitted vertically directly onto rail. Construction Notes - Horizontal All fixings and components to be steel. All joints in the insulation to be overlapped by 100mm and aluminium pins used to prevent joints from separating. Fix insulation to rails in accordance with insulation manufacturers recommendations (note that the cladding sheet does not pin insulation to rails in this system). Outer sheet to be stitched at 450mm centres. Lining panel does not require stitching when rockfibre insulation is used. Construction Notes - Vertical All fixings and components to be steel. All outer sheet side laps must be stitched at no more than 600mm centres. Lining panel does not require stitching with rockfibre insulation is used, otherwise to be stitched at 300mm. System assessment to comply with BS476 part in relation to internal fire. Stability = 240 minutes Integrity = 240 minutes Insulation = 15 minutes Firewall Systems 25

26 4 Hour 30 Minutes insulation 4 Hour Integrity Fire exposure to both faces This system is intended for use as an external wall or partition. Assessment of fire resistance refers to cladding system which must be supported at base or by a fire rated eaves beam. The assessment refers to non-loadbearing walls. The cladding system carries no vertical load other than its own dead weight. Installation of this system to be in accordance with approved document B (Fire Spread) in the Building Regulations Insulation 60mm rockfibre 23kg/m 3 nominal density. Fire Source Fire Source Rockfibre Fire Barrier Strip 50mm x 12mm. Sheeting Rail Sheeting 150mm minimum. Outer Cladding Corus Panels and Profiles external sheet. Insulation 60mm rockfibre 23kg/m 3 nominal density. Lining Panel Corus Panels & Profiles colorcoated galvanised steel 0.4/0.7 mm thick. Construction Notes All side laps to be stitched at 450mm centres. Warrington Fire Research Centre number C System assessment to comply with BS476 part in relation to internal fire. Stability = 240 minutes Integrity = 240 minutes Insulation = 30 minutes 26 Firewall Systems

27 Building Regulations Firewall Building Regulations The Building Regulations Approved Document B edition provides guidelines on acceptable forms of fire resistant structures encompassing construction, material performance, means of escape and appropriate active fire control techniques. These are categorised in the following requirements: B1 Means of escape B2 Internal Fire Spread (linings) B3 Internal Fire Spread (structure) B4 External Fire Spread B5 - Access & Facilities for the Fire Service All of these stipulations require close design integration in order to establish effective building fire containment systems and suitable evacuation procedures. Whilst for the purpose of this brochure it is impractical to cover all the conditions contained within this document, Requirements B2 and B4 are the most relevant when considering the use of steel cladding systems. The following information has been produced as a guide to highlight some of the basic criteria. B2 - Internal Fire Spread (linings) Requirement: (1) To inhibit the spread of fire within the building, the internal linings shall:- (a) resist the spread of flame over their surfaces; and (b) have, if ignited, a rate of heat release which is reasonable in the circumstances. Classification of Linings Location Class Small rooms of area not 3 more than 4m 2 in a residential building and 30m 2 in a non-residential building Other rooms. Circulation 1 spaces within dwellings Other circulation spaces, 0 including the common area of flats and maisonettes Taken from Document B2, Section 7, Table 10 References BRITISH STANDARDS B5476 Fire Tests on Building Materials & Structures Part 3: External Fire Exposure Roof Test Part 4:1970(1984) - Non-Combustibility Test for Materials Part 6: Methods of Test for Fire Propagation for Products All Corus Panels and Profiles cladding products manufactured from Corus organic coated steel meet Classification 0. A description as to how this classification is obtained can be found within the British Standard 476 section of this brochure. B4 - External Fire Spread Requirement: 1) The external walls of the building shall resist the spread of fire over the walls and from one building to another, having regard to the height, use and position of the building. 2) The roof of the building shall resist the spread of fire over the roof and from one building to another, having regard to the use and position of the building. Fire resistance standard: The external walls of the building should have the appropriate fire resistance given in Table A1, Appendix A of Approved Document B (2000 edition). This table stipulates specific provisions of test for fire resistance of elements of structure stating required method of exposure, integrity and insulation periods based on the distance from a relevant boundary. Table A1 refers to Table A2 which in turn gives a specific breakdown of fire resistance periods for buildings in certain purpose groups, building heights and whether sprinklered or not. For example, an external non-loadbearing wall on an industrial unit up to 20m from ground level requires a minimum fire resistance period of 90 minutes (nonsprinklered) with an insulation period of 15 minutes. All certified/assessed built up Corus Panels and Profiles Firewall systems achieve 4 hours integrity and 15 minutes insulation and therefore would satisfactorily meet this criteria. External Services: The external surfaces of walls should meet the provisions laid out in Diagram 36 of Part 7: Methods for Classification of the Surface Spread of Flame of Products Part 11: Method for assessing the Heat Emission from Building Materials Part 22: Methods for determination of the Fire Resistance of non-loadbearing elements of Construction Requirement B4, Section 12. A brief summary of this diagram is tabulated below: Provisions for external landscaping of walls Building Distance from Height Boundary All Corus Panels and Profiles cladding products manufactured from Corus organic coated steel meet Classification 0. A description as to how this classification is obtained can be found within the British Standard 476 section of this brochure. External Wall Construction: Classification <20m <1m 0 <20m >1m No provision >20m <1m 0 >20m >1m For the initial 20m index I should not exceed 20. Areas above 20m the classification should be 0 It must be noted that even though the provisions for external surfaces may have been satisfied, on buildings that are in excess of 15m above ground level the insulation material used in the external wall construction should be of limited combustibility. All insulation specified for use within Corus Panels and Profiles firewall systems can be deemed non-combustible in accordance with BS476 Part 4 and would therefore meet the criteria of this stipulation. British Standard 476 provides an acceptable framework for meeting these requirements within the U.K. and focuses on test related physical measurement in order to establish fire rated performance for steel cladding systems. Reference is made to this standard in Approved Document B sections B2 to B4 - Internal and External Fire Spread. THE BUILDING REGULATIONS 2000 APPROVED DOCUMENT B EDITION B1 Means of Escape B2 Internal Fire Spread (Linings) B3 External Fire Spread (Structure) B4 External Fire Spread B5 Access & Facilities for the Fire Service Firewall Systems 27

28 British Standard 476 British Standard 476 BS476 is the recognised standard referred to in the Building Regulations and provides a framework for meeting fire performance requirements within the U.K. This standard concentrates on test related physical measurement in order to establish the fire rating performance of elements/ constructions. The most relevant in relation to Corus Panels and Profiles organic coated steel cladding products/systems can be highlighted as follows:- BS476 Part 3: External Fire Exposure Roof Test Roofs are graded according to the resistance they offer to external fire (e.g. from an adjacent building or compartment). This is measured in terms of penetration and flame spread. The U.K. Building Regulations designate pitched roofs using profiled sheets produced from galvanised steel or organic coated steel as Classification AA, the highest designation possible. Therefore, it can be satisfied that roofs constructed with Corus Panels and Profiles topsheet profiles in accordance with manufacturer s instructions will achieve this rating. Note: This standard has been withdrawn by the British Standards Institution but continues to be cited in the Building Regulations. The relevant test method has therefore been included as an annex within BS5427: 1996 Code Of Practice for the use of Profiled sheet for roof and wall cladding on buildings. BS476 Part 4: Non-Combustibility Test for Materials All insulation products specified for use within Corus Panels and Profiles firewall systems achieve non-combustible classification and therefore meet the requirements laid down within Approved Document B4 Section 12, External Wall Construction. BS476 Part 6: Methods of Test for Fire Propagation for Products This test determines the contribution a material makes to the fire and is measured in terms of heat contributed over a period of twenty minutes. This is expressed as an index of performance I together with subindices i1, i2 and i3 which are assessed from empirical formulae. These sub-indices relate to heat contributed over shorter time periods. Organic coated steel Corus Panels and Profiles cladding products with for example PVC, PVF2 and lining enamel type finishes have an index I not exceeding 12 qnd a sub-index i1 (heat contributed in the first 3 minutes) not exceeding 6. BS476 Part 7: Methods for Classification of the Surface Spread of Flame of Products This test grades material into classes 1 to 4 according to the rate of flame spread across it s surface. All Corus Panels and Profiles cladding products produced from Corus organic coated steel achieve Class 1 - the highest grade offering the best resistance to spread of flame. The Building Regulations have a higher Classification defined as Class 0, which combines results from BS476 Parts 6 and 7. A class 0 surface must have a Class 1 result from BS476 Part 7 and a maximum index I of 12 and maximum sub-index i1 value of 6 from BS476 Part 6. Therefore, a Corus Panels and Profiles cladding has a finish that achieves Class 0 spread of flame in accordance with the Building Regulations. BS476 Part 11: Method for assessing the Heat Emission from Building Materials A material which is deemed noncombustible in accordance with BS476 Part 4 automatically complies with the requirements laid down for limited combustibility in accordance with BS476 Part 11. This standard adopts a similar test methodology to BS476 Part 4 but uses a different method for the calculation of results. All insulation products specified for use within Corus Panels and Profiles firewall systems achieve non-combustible classification in accordance with BS476 Part 4 and would therefore meet the limited combustibility classification. BS476 Part 22: Methods for determination of the Fire Resistance of non-loadbearing elements of Construction This standard concerns itself with the exposure of fire on one or both faces of the wall construction, the growth of which is designed to simulate a real fire occurrence i.e. in terms of speed of temperature rise, flashover point and eventual temperature peak. Definitions of fire resistance are met in the context of two criteria: Integrity: The time taken before failure of the wall system to satisfactorily prevent the passage of flames and hot gases in accordance with the test procedures laid down in this standard. Insulation: This must be non-combustible and restrict the transmittance of heat from the source of the fire to the unexposed face of the wall construction. Point of failure is deemed when the mean temperature on the unheated side of the construction exceeds 140 C above ambient or when the temperature of any surface point across the unexposed face reaches 180 C above the initial ambient. Tables A1 and A2 in Appendix A of Approved Document B (1992 edition) stipulate actual requirements which can vary from 1/2 hour integrity to 2 hours. Scottish regulation requirements can vary from 1/2 hour integrity to 4 hours. A comprehensive range of Corus Panels and Profiles wall cladding systems have been developed and certified/assessed to BS476 Part 22. These offer a range of insulation performance from 15 minutes to the more stringent 1 hour requirement laid down for partitional/separating walls. These are shown in the System Illustrations/Specifications Section of this brochure. A quick reference table has also been included and can be found on the inside front cover. Updating Fire Requirements As a result of the ongoing programme for the revision of British standards it is inevitable that some will be withdrawn yet will still remain being cited by the Building Regulation Approved Documents. It is therefore recommended that designers review standards and approved documents for current status. 28 Firewall Systems

29 Acoustics Acoustic Systems Acoustic performance is an increasingly important functional area for steel roof and wall cladding systems. Whether it be reducing noise levels within a factory environment or eliminating nuisance from sound in residential areas, acoustic control is a significant aspect of steel cladding design. In recognition of this, Corus Panels and Profiles have conducted a number of live acoustic tests. The results have produced a broad range of systems that meet sound reduction and sound absorption standards frequently specified by industry today. Acoustic Systems 29

30 Introduction Acoustic Systems This section illustrates cladding assemblies designed to provide sound reduction and sound absorption. Both lining panel and structural liner tray systems are shown. The physical conditions under which the acoustic systems were tested are designed to match, as closely as possible, site assembly. However, test results achieved under laboratory conditions and actual site assembled results may vary for any given system. Differences in the levels of flanking sound transmission are quite often the reason for this. A software programme developed collaboratively by members of the MCRMA is available for acoustic system modelling and computer prediction. For acoustic requirements not met by the systems illustrated, please contact the Corus Panels and Profiles Technical Department, who will be pleased to model various constructions to produce a computer prediction to meet your needs. Corus Panels and Profiles also has experience in specialist acoustic systems for Power Station applications. Ryehouse, Killinghome and other similar projects has provided us with a successful track record in this field. Systems Tested for Sound Reduction Material Thickness Average SRI Rw (mm) (db) (db) SR3-LP SAR8-SLT Systems Tested for Sound Absorption and Reduction Material Thickness Average SRI Rw STC (mm) (db) (db) (db) SAR4-SLT PARAMOUNT * Structural Liner Tray - Perforation Pattern Standard Pattern * Predicted Results 5 mm mm 5 mm 5 mm Open Area = 36.4% Approx 60 o 6.3 mm 4.5mm diameter holes at 6.3mm triangular centre Pattern open area - 46% Above: Provincial Park, Sheffield. 30 Acoustic Systems

31 Acoustic Systems Sound Reduction Index Measurement (1/3 octave) Sound Absorption Index Measurement (1/3 octave) Frequency SR3-LP LPC Paramount SAR8-SLT (Hz) C/95/5L/1721/1 System* AT/92/07 Test Frequency SAR4-SLT LPC Paramount (Hz) AT/92/07 System System Average SRI (db) Weighted SRI (db) * Predicted Results Extensive range of systems Acoustic Systems 31

32 Acoustic Systems Sound Reduction Lining Panel Systems SR3-LP Test reference C/94/5L/1721/1 test 1. Average SRI 39.7 ( Hz) 1/3 Octave Band Weighted SRI, R w 39.0 (BS5821:part1) Sound Reduction Index (db) /1 Test 2 (1/3 Octave) 0 50 Frequency(Hz) Insulation 100mm rockfibre insulation. 33kg/m 3 density. Sheeting Rail Sheeting rails supplied by others. Spacer 120mm deep spacer system. Outer Cladding 1000/32 external sheet, 0.55mm thick laid vertically. Lining Panel LP1000 lining panel, 0.40mm thick. Refer to tables on page 32 and 33 for axis increment frequencies Suitable for low humidity buildings. For high humidity buildings contact our Technical Department. The Building Regulations 2000 Approved Document L2 April 2002 Contact our Technical Department for information on the insulation thickness needed for this system to meet part L requirements. 32 Acoustic Systems

33 Acoustic Systems Sound Reduction and Absorption Paramount System Test reference AT/94/19(20) System 4. Weighted SRI, R w 30.3 db (predicted) Insulation 80mm rockfibre insulation. 24kg/m 3 density. Sound Absorption Coefficient AT 94/20 System 4 (1/3 Octave) Frequency(Hz) Sheeting Rail Sheeting rails supplied by others. Spacer 80mm deep spacer system. Outer Cladding Trisomet Composite panel, 40mm thick, (PIR core) 1000mm cover width, laid vertically. Lining Panel Perforated LP1000 lining panel, 0.4mm thick. Refer to tables on page 32 and 33 for axis increment frequencies U Value for this system is 0.24W/m 2 K. Suitable for low humidity buildings. For high humidity buildings contact our Technical Department. Acoustic Systems 33

34 Acoustic System Sound Reduction and Absorption Structural Liner Tray System SAR4-SLT Test reference AT/94/19/(20) System 2. Sound Reduction Graph: R w 35 db Average SRI: R w 35.5 db Sound Absorption Coefficient AT 94/20 System 2 (1/3 Octave) Frequency(Hz) 5000 Refer to tables on pages 32 and 33 for sound absorption and reduction axis incremental frequencies Suitable for low humidity buildings. For high humidity buildings contact our Technical Department. Insulation 130mm rockfibre insulation. 60kg/m 3 density. Liner tray Perforated HL600/130 structural liner tray 0.75mm thick. Cold bridge tape PVC Foam Tape. Outer Cladding 1000/32 external sheet, 0.55mm thick laid vertically. Sound Reduction Index (db) AT 94/19 System 2 (1/3 Octave) Frequency(Hz) 5000 The Building Regulations 2000 Approved Document L2 April 2002 Contact our Technical Department for information on the insulation thickness needed for this system to meet part L requirements. 34 Acoustic Systems

35 Acoustic Systems Sound Reduction Structural Liner Tray System SAR8-SLT Test reference AT/92/07. Sound Reduction Graph: R w 44 db Average SRI: R w 39.7 db Sound Reduction Index (db) AT 92/07 (1/3 Octave) 0 50 Frequency(Hz) Insulation 80mm rockfibre insulation. 23kg/m 3 density. Liner tray HL600/130 structural liner tray 1.00mm thick. Cold bridge barrier 50 x 12mm rockfibre Strip. (350Kg/m 3 density). Outer Cladding 1000/32 reversed external sheet, 0.55mm thick laid horizontally. Refer to tables on pages 32 and 33 for sound absorption and reduction axis incremental frequencies Suitable for low humidity buildings. For high humidity buildings contact our Technical Department. The Building Regulations 2000 Approved Document L2 April 2002 Contact our Technical Department for information on the insulation thickness needed for this system to meet part L requirements. Acoustic Systems 35