SINTEF Building and Infrastructure confirms that. Moelven Modules

Transcription

1 SINTEF Certification No Issued first time: Revised: Amended: Valid until: Provided listed on SINTEF Building and Infrastructure confirms that Moelven Modules has been found to be fit for use in Norway and to meet the provisions regarding product documentation given in the regulation relating to the marketing of products for construction works (DOK) and regulations on technical requirements for building works (TEK), with the properties, fields of application and conditions for use as stated in this document 1. Holder of the approval Moelven ByggModul AS P.O.Box 163 NO-2391 Moelv 2. Product description 2.1 General Moelven Modules are prefabricated timber housing modules connected on site to form larger buildings. Each module is made of floor-, wall- and roof elements manufactured and assembled in the factory. The modules are based on traditional timber frame building structures with standard member spacing c/c 600 mm, internal lining and mineral wool insulation. External building parts include also water vapour control layer, wind barrier and cladding or roofing. The roof design is a cold and ventilated construction. A separate roof structure may also be installed on site. Module width and length are customised to each building project. The modules are made in widths from 2,5 m to 4,2 m, and lengths up to approx. 15 m. Internal room height is from 2,4 m to 2,8 m, with a total module height from 2,9 m to 3,5 m. Modules which are linked together may have open long and/or short sides. Connecting modules and assembling tight joints are done on site. The modules may be supplemented on site with a separate roof structure above the module roof, including compact non-ventilated roof structures with parapets. This approval covers the standard design of the construction system, i.e. wall, roof and floor structures, including wet room design, joints between building sections and connection to foundations. Specifications of incorporated materials and components are shown in Table 1. The approval does not cover surface materials, supplementary components and structures like foundations, stairs, windows and doors, balconies, roofs built on site, electrical installations and ventilation systems. Fig. 1 Principle of Moelven Modules with several housing modules connected on site. The modules may be supplemented with a separate roof structure on top Construction details like roof eaves, gutters and drainage pipes are neither covered by the approval, but must be specified separately for each individual building project. 2.2 Construction design and details The principle design of the module elements is shown in clause and fig Table 1 shows the specifications for the individual materials and components. Construction and assembly details are described in more detail in Standard Construction Details for Moelven Modules belonging to SINTEF Technical Approval The set of construction details which at any time is filed at SINTEF Building and Infrastructure constitutes a formal part of the approval. SINTEF is the Norwegian member of European Organisation for Technical Assessment, EOTA, and European Union of Agrément, UEAtc Contact person, SINTEF: Jon Lundesgaard Author: Jon Lundesgaard Phone: certification@sintef.no Copyright SINTEF Byggforsk Page 1 of 10

2 SINTEF Technical Approval - No Page 2 of 10 Table 1 Material specifications for Moelven Modules Specification Material/component (Material dimensions not specified here must be as indicated in the product description or in the set of construction details) Structural components Structural timber grade C18 or C24 according to EN / EN 338 for structural Timber purposes, otherwise C14. Moisture content max. 18 % - Glulam GL30c and split gluelam GL28c according to EN Glued laminated timber - Glulam type BN-beam according to SINTEF Technical Approval Studs Iso3 studs according to SINTEF Technical Approval 2610 Panels/boards 22 mm particleboard for flooring in compliance with EN 13986, formaldehyde class E1. The Subfloor panels shall satisfy the structural requirements in EN 12871, including maximum 2,0 mm deflection under 1 kn point load Wood based panels according to EN to strengthen wall fastenings according to Strengthening panels in wet rooms TEK 10 ( 12-9) Panels for sound insulating floors 36 mm Hunton Silencio according to SINTEF Technical Approval 2330 Ceiling Min. 16 mm Forestia particleboard type P5 according to EN or equivalent Internal sheathing 12 mm OSB/3 according to EN in wet room walls Roof sheathing in flat roofs Min. 16 mm Forestia particleboard type P7, or min. 15 mm OSB/3 according to EN Panels in walls between modules 9 mm OSB/3, according to EN Panels in sound insulating walls 9 mm OSB/3, according to EN mm gypsumboard type E H2 according to EN Underside of modules, over - 9 mm Moelven Vänerply treated with basilit against surface fungus foundations mm particleboard type P5 or P7 according to EN mm OSB/3 panels according to Wall underlay sheathing 15 mm Gyproc Protect F gypsumboard (depending on fire resistance requirements) On top of modules, facing Min. 12 mm particleboards type P5 according to EN modules above Insulation materials - CE-marked mineral wool according to EN with declared thermal conductivity λd = 0,032 W/mK for external building structures and λd = 0,038 W/mK for other structures Thermal insulation - Mineral wool with declared thermal conductivity λd = 0,035 W/mK for fire separation structures, or rock wool with λd = 0,037 W/mK Air and moisture barriers Water vapour control layer 0,15 mm polyethylene film with SINTEF Technical Approval 9 mm gypsum boards type E H2 according to EN or 9 mm OSB/3 according to EN 13986, with tape over joints and connections Wind barrier The wind barrier layers shall have a total water vapour resistance sd 0,5 m, and an air permeability of max. 0,05 m³/m²hpa - 1,2 mm Protan SE PVC roofing membrane according to SINTEF Technical Approval 2010, or equivalent according to EN ,0 mm Protan Takfuktsperre PVC transport membrane on modules without a permanent Roofing external roof structure Compact roofs are covered on site with Protan SE roofing membrane according to SINTEF Technical Approval 2010 (or equivalent according to EN 13956) Claddings and linings 19 mm timber cladding with vertical board on board, or vertical or horizontal double rebated External cladding boards, class 1 according to EN and class 1 according to SN TS mm foliated particleboards type P1 according to EN 13986, formaldehyde class E1-12,5 mm gypsumboard type A and R according to EN 520 Internal lining - 15 mm Gyproc GF 15 Protect or 15 mm gypsumboard type F according to EN mm painted fibreboards type MBH according to EN and SINTEF Technical Approval 2038 Fastening Nails and screws according to EN The fasteners shall have adequate corrosion Mechanical fasteners protection. Fasteners for external use shall minimum be hot dipped according to EN ISO 1461 or have equivalent corrosion protection Plate connectors Hot dipped steel plates with holes - Bostik 700/750 PVAc glue between subfloor and joists Glue - Bostik Startack ST glue for roofing membrane - Bostik Startack Golv- & vegglim BVD for vinyl flooring

3 SINTEF Technical Approval - No Page 3 of 10 Table 1 (continued) Material/component Sealants Specification (Material dimensions not specified here must be as indicated in the product description or in the set of construction details) - Bostik 820 acryl sealant - Bostik Maxibond - Fibo Seal in wet room panel joints Tape Siga Wigulf 100/150 and Siga Sicrall 60 according to SINTEF Technical Approval Wire net Steel wire net ("chicken net"), width 0,9 m, gauge 1,0 mm, fixed with 50 mm long staples under joists to support mineral wool Flooring Vinyl Tarkett IQ Granit according to EN 649 Linoleum Tarkett Veneto XF according to EN 686 Wet rooms Wall panels Fibo-Trespo wall panels according to SINTEF Technical Approval 2289 Floor panels MDF panels with 5 mm x 8 mm grooves facing down Floor and wall membranes Membranes according to the requirements in ETAG 022 and according to Norwegian environmental requirements Water pipes Høiax according to SINTEF Technical Approval Waste water pipes Rehau according to SINTEF Product Certificate 0397 Floor gully Veiser Seres PP gully according to SINTEF Product Certificate 0441 Sealant - Bostik Maxibond - Fibo Seal Miscellaneous Water vapour control layer penetration details Elastic support pads Sealing foam (windows) Glava or DAFA products Sylomer, Stepisol or equivalent (support pads between modules) Soudal NV Flexifoam 2.3 External wall elements Fig. 2 shows the principle design of external walls. Thermal insulation, water vapour control layer and internal lining are installed in the factory, partly after the elements are assembled to modules. 2.4 Walls between modules Fig. 3 shows the principle design of walls for installation towards an adjacent module. Walls between modules may have a different design due to sound insulation or fire requirements, see cl Extra studs are installed beside wall openings and for supporting loads from upper structures according to specific structural design for each individual building mm double rebated timber 36 x 173/198 mm (or mm) 4 cladding studs + mineral wool 2 19 mm ventilated space 5 Water vapour control layer 3 9 mm OSB or gypsum board 6 Internal lining Fig. 2 Principle design of external walls. The walls may have 175, 200 or 250 mm thick insulation. External timber cladding may also be board on board vertical cladding or double rebated vertical boards on 28 mm battens and 9 mm counterbattens 1 Min. 22 mm air space 3 36/48 x 98 mm studs mm mineral wool 2 9 mm OSB board 4 Internal lining Fig. 3 Principle design of walls between modules. The walls may have an additional internal lining layer for better sound insulation and fire resistance performance, see table 2

4 SINTEF Technical Approval - No Page 4 of Partition walls inside modules Fig. 4 shows the principle design of partition walls inside modules. 1 36/48 x 68/98 mm studs + 70/100 mm mineral wool 2 Internal lining Fig. 4 Principle design of walls inside modules. The walls may have also have more than one internal lining layer 2.6 Floors Fig. 5 shows the principle design of floors over foundations. The floor elements have longitudinal main beams (edge beams) on each side, and transvers floor joists. Beams and joists are designed according to structural calculations for the relevant loads and span in each individual case mm particleboard 7 PVC transport membrane (may be kept as permanent layer) 2 48 x 225 mm glulam joist c/c 600 mm 8 12 mm particleboard mm mineral wool 9 36 x 198 mm ceiling joists 4 9 mm moisture resistant particleboard mm mineral wool 5 13 mm battens mm particleboard 6 36 mm sill installed on site Fig. 6 Example of horizontal section between two modules 1 Edge beam 5 13 x 98 mm sill 2 Flooring 6 Joist support 3 22 mm particleboard 7 9 mm moisture resistant particleboard 4 36 x 223 mm timber joists mm mineral wool 8 13 mm batten Fig. 5 Principle design of module floor. Also 270 mm high beams and joists are used, with equivalent mineral wool thickness. On the underside may also 9 mm gypsum board or plywood be used Fig. 6 shows example of principle design of module roof and the double structure forming the horizontal separation between two modules. The upper part is equivalent to the design shown in fig. 5. Fig. 7 shows the horizontal separation between two modules with fire resistance REI mm particleboard 7 48 x 198 mm ceiling joists C24 c/c 600 mm 2 48 x 225 mm glulam joist 150 mm Glava Proff 35 mineral 8 c/c 600 mm wool mm mineral wool 9 48 x 48 mm timber battens C24 c/c 300 mm 4 9 mm OSB / Glava wind barrier mm Gyproc GF Protect gypsumboard 5 25 mm spacing mm foliated particleboard 6 12 mm particleboard Fig. 7 Horizontal section between two modules with fire resistance REI 60

5 SINTEF Technical Approval - No Page 5 of 10 Fig. 8 shows the principle design of floors under attic rooms. Modules for houses with roof structures built on site are delivered without a roofing membrane and built-up slope, but with a transport membrane for temporary protection. Fig. 10 shows the principle design of compact roofs with thermal insulation placed on top of the load-bearing structure. The roof design has internal water drainage. The prefabricated roof element is only partially insulated with fixed fire insulation since most of the thermal insulation is positioned on top of the roof structure. The thermal insulation is installed on site after the assembling of modules. Roofing with PVC or bitumen based membrane is installed on site, slope min. 1 / Edge beam 6 Joist support 2 PVC transport membrane 7 12 x 70 mm particleboard strip 3 12 mm particleboard 8 Wire net when EI 30 is required 4 36/48 x 198 mm ceiling joists mm mineral wool Water vapour control layer 5 50 mm mineral wool mm foliated particleboard Fig. 8 Principle design of floors under attic rooms. Rock wool insulation is required in certain cases, see table Roof elements Fig. 9 shows the principle design of flat roofs. Longitudinal main beams (edge beams) and secondary transvers beams are designed according to structural calculations for the relevant loads and span in each individual case. 1 Two 67 x 48 mm battens 8 36 x 223 mm beams mm mineral wool 2 67 x 223 mm edge beam 9 50 mm mineral wool 3 PVC roofing membrane 10 Beam support 4 16 mm moisture resistant particleboard 11 Wire net 5 48 x 20/70 battens for roof slope 12 Water vapour control layer 6 Ventilated space mm foliated particleboard 7 Wind barrier Fig. 9 Example of flat, ventilated roof design. Total thermal insulation thickness may vary from 225 mm to 325 mm, depending on thermal loss calculations for each individual house. Rock wool insulation is required in certain cases, see table 2 1 Roofing (installed over parapet) mm moisture resistant particleboard 2 12 mm particleboard installed on site 13 Taped joint 3 Transport membrane x 248 mm edge beam 4 Thermal insulation installed on site x 248 mm beam 5 9 mm OSB mm foliated particleboard 6 48 x 148 mm sill 17 Min. 300 mm wide mineral wool 7 Parapet element installed on site mm mineral wool 8 9 mm gypsum board x 48 mm battens c/c 0,4 m 9 19 mm batten mm foliated particleboard mm cladding 21 Water vapour control layer x 148 mm sill Fig. 10 Compact roof design. Total thermal insulation thickness may vary from 200 mm to 400 mm, depending on thermal loss calculations for each individual house

6 SINTEF Technical Approval - No Page 6 of 10 Insulation thickness is according to energy calculations for each individual project. Parapets are delivered as separate elements, supplemented on site with cladding, insulation, roofing, flashing etc. The transport membrane on top of the modules is used as water vapour control layer in the finished roof. 3. Fields of application Moelven Modules may be used in hazard class 1 6 in fire class 1 and 2. The modules are applicable for removal and reuse other places. Moelven Modules are placed on basement or perimeter wall foundations, see cl Properties 4.1 Structural performance Load-bearing structures are calculated specifically for each individual building project. Each module is structurally designed according to EN and EN 1991, including national annexes for Norway. The structural design of wall and roof elements may also be done with reference to Building Research Design Guide Timber walls in low rise houses and Timber rafters. 4.2 Reaction to fire 11 mm Huntonit fibreboard and 12 mm Forestia Ferdigvegg boards are classified D-s2,d0 according to EN ,5 mm gypsum board type A and R shall be classified A2- s1,d0 in structures where fire resistance is required. Glava insulation is classified A1 according to EN Fire resistance 12 mm Forestia Ferdigvegg boards are classified K 210 according to EN Screw length min. 30 mm with max. spacing 200 mm. 11 mm Huntonit fibreboard are classified K 210 according to EN Screw length min. 30 mm with max. spacing 150 mm. Fire resistance for walls, floors and roofs are shown in table 2. The performances are based on calculations according to Brandsäkra trähus v3, Building Research Design Guide and fire resistance testing. Design load capacity for accidential action fire at the given fire resistance duration is shown as Design load capacity/bending moment capacity during fire. Design load capacity shall be checked towards design accidential action fire. Design load capacities for walls are given as centric axial loads per meter wall length. Design load capacities for floors are given as bending moment per joist. Fire resistance is given for one-sided fire exposure from the inside. Minimum screw length for board installation shall be according to the manufacturer's instructions. Specifications of length and spacing of fasteners are given in the control description related to the approval. Table 2 Fire resistance and load capacities for building structures Buidling structure External wall, fig. 2 (YV1, YV2, YV3): - 12 mm Forestia Ferdigvegg /11 mm Huntonit board - 36 x 173/198/(198+48) mm studs, grade C18-175/200/250 mm Glava insulation with density min. 16 kg/m³ - Wind barrier felt, 9 mm OSB-board or gypsum board GU - 19 mm air space - 19 mm timber cladding Wall height max 2,5 m Equivalent fire resistance REI 45 1) Design load capacity/bending moment capacity during fire 15 kn/m wall length Non load-bearing inner wall, fig. 4 (IBV1, IBV2, IBV3, IBV4): - 12 mm Forestia Ferdigvegg /11 mm Huntonit board - 36 x 68 mm studs grade C18-70 mm Glava insulation with density min. 12 kg/m³ - 12 mm Forestia Ferdigvegg / 11 mm Huntonit board. EI 30 2) - Double partition wall, fig. 3 (BIV1): - 12 mm particle board / 11 mm fibereboard according to EN 13986, density min. 680 kg/m³ - 36 mm x 98 mm studs, grade C mm glass wool insulation with density 15 kg/m³ - 9 mm OSB board according to EN 13896, min. density 550 kg/m³ - Air space, etc. Wall height 2,5 m REI 15 2) EI 30 2) 20 kn/m wall length

7 SINTEF Technical Approval - No Page 7 of 10 Table 2 (cont.) Buidling structure Double partition wall, fig. 3 (BIV1): - 12 mm Forestia Ferdigvegg /11 mm Huntonit board / 12,5 mm gypsum board type A - 48 mm x 98 mm studs, grade C mm Glava insulation with density 13 kg/m³ - 9 mm OSB according to EN with min. density 550 kg/m³ - Air space, etc. Wall height 2,4 m Double partition wall, fig. 3 (BIV4): - 12 mm particle board / 11 mm fibereboard according to EN 13986, density min. 680 kg/m³ - 12,5 mm gypsum board type A with density min. 600 kg/m³ mm glass wool with min. density 15 kg/m³ - 48 x 98 mm studs grade C24, top- and bottom sill 48 x 98 mm - Air space, etc. Wall height 2,5 m Double partition wall, fig. 3 (BIV5, BIV6): - 11 mm Huntonit board / 12,5 mm gypsum board type A with density min. 600 kg/m³ - 15 mm Gyproc GF 15 Protect F - 68 x 98 mm studs and sills, grade C mm Glava Proff 35 Plate with density 15 kg/m³ - 9 mm OSB/3 board with densitey min. 600 kg/m³ - 22 mm air space - 9 mm OSB/3 board with min. density 600 kg/m³ - 68 x 98 mm studs and sills, grade C mm Glava Proff 35 Plate with density 15 kg/m³ - 15 mm Gyproc GF 15 Protect F - 11 mm Huntonit board / 12,5 mm gysum board type A with density min. 600 kg/m³ Wall height 2,7 m Floor, fig. 6 (E1, E2, E3, E6): - 12 mm particleboard min. 680 kg/m³ - Wire net mm glass wool, density min. 15 kg/m³ - 36 mm x 198 mm joists, grade C24-12 mm particleboard, density min. 500 kg/m³ - Air space - 9 mm particleboard, density min. 500 kg/m³ - 36 mm x 223 mm joists, grade C mm glass wool, density min. 12 kg/m³ - 22 mm particleboard, density min. 500 kg/m³ Floor, fig. 6 (E4, E5 og E7): - 12 mm Forestia Ferdigvegg, density 680 kg/m³, installed with Senco nails 50 x 2,1 mm c/c 100 mm, or 12,5 mm gypsum board type A min. 600 kg/m³, installed according to the manufacturer's instructions with min. 50 mm long fasteners - 15 mm Gyproc GF15 Protect, installed with gypsum screws 3,9 x 45 mm c/c 100 mm along edges and c/c 150 mm at middle of the board - 48 mm x 48 mm battens, grade C24, c/c 300 mm, installed with nails 3,1 x 90 mm mm Glava Proff mm x 148 mm joists, grade C24, c/c 600 mm - 12 mm Forestia Vegg Standard, density 660 kg/m³ - Air space mm Glava mm x 225 mm BN glulam joists, c/c 600 mm - 22 mm Forestia Gulv Standard, density 700 kg/m³. Equivalent fire resistance REI 30 2) EI 30 2) REI 30 2) REI 60 2) REI 30 3) R 30 3) R 60 3) REI 60 3) Design load capacity/bending moment capacity during fire 16,2 kn/m wall length 32 kn/m wall length 25 kn/m wall length 6,0 knm per floor joist (compression or tensile stress on fire exposed side) Design not governed by capacity at fire 4)

8 SINTEF Technical Approval - No Page 8 of 10 Table 2 (cont.) Buidling structure Floors under attic rooms, fig. 8 (T4): - 12 mm particleboard, min. 680 kg/m³, installed with min. 23 mm length - Wire net, fastened with min. 50 mm length - 50 mm rock wool, min. 50 kg/m³ mm glass wool, min. 15 kg/m³ - 36 mm x 198 mm structural timber, grade C24-12 mm particleboard, min. 500 kg/m³ Ventilated roof, fig. 9 (T1): - 12 mm particleboard, min. 680 kg/m³, installed with min. 23 mm length - Wire net, fastened with min. 50 mm length mm rock wool, min. 50 kg/m³ (limitation in calculation method) mm glass wool, min. 15 kg/m³ - 36 mm x 223 mm structural timber, grade C24 - Wind barrier felt Equivalent fire resistance REI 15 3) EI 15 3) REI 30 3) EI 30 3) Design load capacity/bending moment capacity during fire 7,4 knm per floor joist (compression or tensile stress on fire exposed side) 5,8 knm per floor joist (compression or tensile stress on fire exposed side) Ventilated roof, fig. 9 (T1): - 12 mm particleboard, min. 680 kg/m³, installed with min. 23 mm length - 15 mm gypsum board type F according to EN 520, min. 600 kg/m² - Wire net, fastened with min. 50 mm length mm glass wool, min. 15 kg/m³ - 36 mm x 223 mm structural timber, grade C24 - Wind barrier felt REI 30 3) EI 30 3) 4,8 knm per floor joist (compression or tensile stress on fire exposed side) 1) One sided fire exposure from the inside 2) One sided fire exposure 3) One sided fire exposure from the underside. This is the most critical situation for the floor structure. Fire exposure from the top side of the roof must be specifically assessed in each individual project. 4). Floor joists (upper part of the horizontal partition) will not be exposed to fire, not charred, and the load bearing capacity is not influenced by fire 4.4 Sound insulation Partition walls between modules shown in fig. 3, installed with minimum 22 mm free spacing, have an expected sound insulation performance R' w 48 db. With 48 mm x 98 mm studs and double layer of lining boards on each side the expected sound insulation is R' w 55 db. For horizontal partitions between modules as shown in fig. 5 and 6, installed according to the standard construction details, the expected sound insulation is R' w 52 db. The expected impact sound pressure level is L' n,w 58 db, providing vinyl flooring with soft backside (impact sound quality) or equivalent. To meet the requirements for impact sound insulation between housing units according to NS 8175 (L' n,w 53 db), the floors must be completed with parquet flooring and Silencio parquet underlay over a floating particleboard layer on an elastic support of soft fibreboards or stiff mineral wool. 4.5 Thermal insulation Table 3 shows thermal transmittance (U-values) for standard module structures, calculated according to EN ISO Table 3 U-values for Moelven Modules Structure Thermal insulation U-value thickness W/m mm K Floor over foundation ,18 0,16 1) 0,15 External wall ,22 2) 0,22 0,18 Roof 3) 225 0, ,13 1) Depending on type of structure 2) Wall with small timber section share 3) Compact roofs are insulated according to specific design for each individual building 4.6 Durability Because of limited roof ventilation, and depending on local weather conditions, ice and trapped water reducing the roofing life time must be expected for flat roofs. The modules are removable for use in other places.

9 SINTEF Technical Approval - No Page 9 of Environmental aspects 5.1 Chemicals hazardous to health and environment The components in the modules contain no hazardous substances with priority in quantities that pose any increased risk for human health and environment. Chemicals with priority include CMR, PBT or vpvb substances. 5.2 Effect on indoor environment The components in the modules are not regarded as emitting any particles, gases or radiation that have a perceptible impact on the indoor climate, or to have any significant impact on health. 5.3 Effect on soil, surface water and ground water The leaching properties of the components in the modules are evaluated to have no negative effects on soil or water. 5.4 Properties related to work environment Isocyanates may be released from non-cured polyurethane products (glue/sealants). Isocyanates are released when cured polyurethane/polyisocyanates are heated to C. Isocyanates may cause allergy and asthma. 5.5 Waste treatment / recycling Components shall be sorted as wood products, metal, gypsum, residual waste or other appropriate waste fractions, and delivered to an authorized waste treatment plant for material recovery, energy recovery, disposal and/or handled as hazardous waste. Non-cured liquid applied membranes, primers, glue and sealants is hazardous waste (see Avfallsforskriften). Such products shall be sorted on site as hazardous waste and delivered to an authorized treatment plant for hazardous waste. 5.6 Environmental product declaration No environmental product declaration (EPD) is issued for the modules. 6. Special conditions for use and installation 6.1 Structural design The following calculations/documentation shall be worked out specifically for each individual building structure and project: Structural design of roof structure Structural design of walls, including openings in module walls and beams over openings, side studs and separate columns Determination of floor joist dimensions according to the principles given in Building Research Design Guide Timber floors. Structural design and construction, or relevant SINTEF Technical Approvals for wood based joists. Structural design and specification of wind load anchoring, including installation description 6.2 Fire resistance design Specific construction details for connections between modules at floors, walls and roof must be worked out in cases where fire resistance is required. Penetrations of building structures with fire resistance must be done with components having equal fire resistance. Floors under attic rooms (fig. 8): For buildings in hazard class 4 and fire class 1 is 12 mm Forestia Ferdigvegg or 11 mm Huntonit board sufficient. For other buildings must the fire resistance be EI 30 in fire class 1 and EI 60 in fire class 2 for two-sided fire exposure (exposure from the top or the underside, but not simultaneously). 6.3 Thermal insulation design Required thermal insulation shall be determined for each individual building project, and necessary improvement of the insulation performances given in cl. 4.5 shall be specified. 6.4 Foundations The modules shall be installed on foundations that meet the manufacturer's specific requirements concerning tolerances on dimensions, level and directional deviation, and have adequate protection against damage from excessive moisture. Moisture movement from the foundations to wood materials shall be prevented with a moisture proof membrane. Otherwise the principles shown in Building Research Design Guide Foundations with perimeter walls and ventilated crawl space shall be followed. 6.5 Windows and external doors It is presumed that windows and external doors installed in the modules have adequate air tightness, thermal insulation and climate resistance which are documented. 6.6 Installation on site The modules shall be installed according to the construction details shown in Standard Construction Details for Moelven Modules belonging to SINTEF Technical Approval 2220, and the specific designs mentioned in cl The modules shall be anchored to the foundations according to specific calculations for each individual delivery, or with reference to Building Research Design Guide Wind anchoring and bracing of low rise timber houses and Wind anchoring and bracing of light timber buildings. 6.7 Roof structure When modules are connected to form buildings wider than the module length, specific construction details shall be worked out to secure adequate ventilation of cold roof structures. 6.8 Wet rooms Wet rooms shall be designed and built according to TEK.

10 SINTEF Technical Approval - No Page 10 of Transport and storage The modules shall be protected during storage and transport with a protection of solid membrane on the roof and cm down along the walls. Extra temporary bracing during transport shall be used for modules with large openings. 7. Factory production control The modules are produced in Norway by: - Moelven ByggModul AS, Moelv, Norway - Moelven ByggModul Hjellum AS, Hjellum, Norway. The holder of the approval is responsible for the factory production control in order to ensure that the product is produced in accordance with the preconditions applying to this approval. The manufacturing of the product is subject to continuous surveillance of the factory production control in accordance with the contract regarding SINTEF Technical Approval. 8. Basis for the approval The approval is based on an assessment of the system's construction details, and performances verified in the following guides and reports: SP Fire Research AS. Brannteknisk prøving av bærende veggkonstruksjon i henhold til NS-EN :2012, report A dated (Fire resistance, double partition wall) SP Fire Research AS. Brannteknisk prøving av bærende veggkonstruksjon i henhold til NS-EN :2012, report B dated (Fire resistance, double partition wall) SP Fire Research AS, Brannteknisk prøvning av etasjeskiller i henhold til NS-EN :2014. Report dated SINTEF Technical Apptroval no Huntonit bygningsplater (reaction to fire) Forestia Performance declaration YT-03 Forestia Ferdigvegg, dated Commission Delegated Regulation no. 1291/2014, dated (fire resistance, boards) SINTEF NBL as, report no , dated (fire resistance, external wall) Nemko sertifiseringslisens nr. 649, dated (fire resistance, non loadbearing internal wall) Sweco. Lydteknisk etterprøving av nybygg, report dated SINTEF Byggforsk. Building Research Design Guide Timber frame walls SINTEF Byggforsk. Building Research Design Guide (Thermal insulation) SINTEF Byggforsk. Building Research Design Guide Timber frame walls. Thermal insulation and tightness SINTEF Byggforsk. Building Research Design Guide (Fire resistance 9. Marking Each module delivery shall be followed by a set of delivery documents which as a minimum include the name and address of the manufacturer, project identification, specific installation guides, and construction details comprising the relevant details in Standard Construction Details for Moelven Modules belonging to SINTEF Technical Approval The approval mark for SINTEF Technical Approval No may also be used. TG 2220 Approval mark 10. Liability The holder/manufacturer has sole product responsibility according to existing law. Claims resulting from the use of the product cannot be brought against SINTEF beyond the provisions of Norwegian Standard NS for SINTEF Building and Infrastructure Marius Kvalvik Approval Manager