The assessment is based on the following fire test from SINTEF NBL as.:

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2 Page 2 of 7 The assessment is based on the following fire test from SINTEF NBL as.: /1/ Fire test report no : Fire test of steel columns and HSQ-beams, corrugated steel roof element and concrete slab insulated with PAROC FPS 17 fire protection boards, according toen , dated REMARKS: Please note this is not an approval, but shall be considered as an assessment for use together with the above mentioned reference, when applying to the authorities for classification before date of review. After this date, we should review the assessment before use. The assessment is based on experience from fire testing and the information supplied. Any changes in the specification of the products will invalidate this assessment. SINTEF NBL recommends the assessment to be returned for review after a period of 2 years, to consider any available additional data, or changes in the fire procedures. CONTENT Page PRODUCT...3 FIRE PROTECTION OF CONCRETE STRUCTURES...3 RESULTS FROM FIRE TEST...3 ASSESSMENT...7

3 PRODUCT Page 3 of 7 The assessed product has the trade name Protecta A-plate in Norway. Protecta A-plate is marketed in Norway on the basis of SINTEF Product Documentation issued to Protecta AS. Protecta A-plate is identical to PAROC FPS 17 produced by PAROC AB, Sweden. All test- and assessment reports on Paroc FPS 17 from SINTEF NBL are issued to Paroc AB. PAROC FPS 17 is a mineral wool board with density kg/m 3. Material specifications are described in detail in /1/. FIRE PROTECTION OF CONCRETE STRUCTURES Fire technical design of concrete structures may be carried out according to Norwegian Standard NS The load bearing capacity in fire is determined e.g. from the amount of reinforcing bars, distribution and position of bars in the concrete cross section and the concrete cover i.e. the distance from the surface of the concrete to the steel bars (axis distance). The concrete cover acts as fire protection of the steel bars. Normally the fire design is made from an assumption of a critical steel temperature of 5 o C for normal reinforcement and 35 o C for prestressed reinforcement. In given situations, e.g. when a concrete floor is requested upgraded to higher fire resistance in connection with change of use of a building, an inadequate concrete cover may be substituted by a different fire protective material. It is easier to install a fire proofing than to increase the concrete cover. The fire proofing to be used as replacement for inadequate concrete cover must be handled as a insulation system, comprising an insulating product (boards) and a method of installation and securing of the boards for the required fire resistance time. It is a requirement that the insulation and the installation technique have at least the same fire resistance as the design fire resistance of the slab. This means that if the required fire resistance is 12 minutes, the insulation and the installation technique must be documented for at least the same fire resistance. RESULTS FROM FIRE TEST One fire test is carried out on a 2 thick reinforced concrete slab made of normal density concrete with PP-fibres. The purpose of the PP-fibres was to avoid spalling and maintain an unchanged cross section of the slab throughout the fire test. The fire test was carried out according to EN with standard fire exposure. The concrete slab was 35 long and 9 wide. Exposed length of the slab was divided in three fields, each of length 1, with different fire protection. Paroc FPS 17 mineral wool boards for fire protection of concrete is documented for 12 minutes fire exposure with board thickness 2 and fasteners of concrete anchors of type 6x6mm Fix- Hülse and 8,5mm x 3 x 1,5mm steel washers from Würth. Two principles of fastening of the 2 boards with Fix-Hülse/washers were tested (see Figure 1):

4 Page 4 of 7 2 boards with bolt distance cc 4 and bolts in butt-joints (mid field) 2 boards with bolt distance cc 3 and bolt positions 5 from edge (left field) Figure 1 Positions of bolts for fastening of Paroc FPS 17 boards below the concrete slab. (From /1/). Each of the fields was instrumented with 1,5mm encapsulated thermocouples embedded in the concrete. The positions for the thermocouples were aimed at being equal for the three fields for direct comparison of effect of fire protection compared to bare concrete cover. See Figure 2. Figure 2 Positions of thermocouples in the concrete slab in different distances from exposed surface. The position of the thermocouple rack is in the centre of each field with/without fire protection. A full description of the fire test is given in /1/. Measured temperatres are shown in Figure 3-5.

5 Page 5 of 7 2 concrete slab of normal density concrete mm Paroc FPS 17 (uninsulated slab) Figure 3 Temperatures measured in concrete without fire protection ( Paroc FPS 17). 2 concrete slab of normal density concrete 2 Paroc FPS 17 - end bolts and distence cc Figure 4 Temperatures measured in concrete protected with 2 Paroc FPS 17 and bolt distance cc 4 and bolts in butt joints.

6 Page 6 of 7 2 concrete slab of normal density concrete 2 Paroc FPS 17 - bolt distence cc Figure 5 Temperatures measured in concrete protected with 2 Paroc FPS 17 and bolt distance cc 3 and bolt position 5 from edge. Figure 6 shows a comparison of the two fields with 2 Paroc FPS 17. The dotted lines show the measured temperatures behind the installation with bolt distance cc 3 and bolt position 5 from edge. 2 concrete slab of normal density concrete 2 Paroc FPS Figure 6 Comparison of the two fields with 2 Paroc FPS 17. The dotted lines show the measured temperatures behind the installation with bolt distance cc 3 and bolt position 5 from edge.

7 Page 7 of 7 ASSESSMENT The results from the fire test showed that an installation technique with common bolts in the buttbutt joints is not to be recommended. In the fire test one of the boards slipped out of one of the joint bolt fasteners, and was hanging from the central bolt laying open the concrete surface. This is visible in the measured surface temperature for in Figure 4 and 6. The fire test also shows that 2 PAROC FPS 17 prevents the temperature on the concrete surface behind the fire proofing from reaching more than approximately 24 o C during a 12 minutes fire exposure. In Figure 7 measured temperature (dotted line) on the surface of the concrete behind a 2 board (from Figure 5) is combined with the measured temperatures in the unprotected concrete. The figure shows that 2 Paroc FPS 17 corresponds almost to 6 concrete for 6 minutes exposure and more than 7 concrete for 12 minutes exposure as tested here. 2 concrete slab of normal density concrete Comparison of 2 Paroc FPS 17 and uninsulated slab Behind 2 board Figure 7 Comparison of unprotected and protected concrete slab. SINTEF NBL is of the opinion that 2 Paroc FPS 17 boards, secured with 6x6mm Fix-Hülse bolts and washers with bolt distance cc 3 and bolt position 5 from edges, may be used as fire protection of all reinforced concrete slabs (floors) for required fire resistance up to 12 minutes, where the concrete cover of the reinforcement steel bars are inadequate. It is a prerequisite that the slab in other respects is designed according to relevant construction standard.