CERTIFICATE OF APPROVAL No CF 574. Sika Deutschland GmbH

CERTIFICATE OF APPROVAL No CF 574 This is to certify that, in accordance with TS00 General Requirements for Certification of Fire Protection Products The undermentioned products of Kornwestheimer Strasse 107, D-70439, Stuttgart, Germany. Tel: 0049 7042 109 259 Fax: 0049 7042 109 261 Have been assessed against the requirements of the Technical Schedule(s) denoted below and are approved for use subject to the conditions appended hereto: CERTIFIED PRODUCT Sika Unitherm Steel W30 TECHNICAL SCHEDULE TS15 Intumescent Coatings for Steelwork Signed and sealed for and on behalf of CERTIFIRE Sir Ken Knight Issued: 1 st October 2007 Chairman - Management Council Page 1 of 13

1. This approval relates to the use of Sika Unitherm Steel W30 for the fire protection of I-shaped and hollow steel sections. The precise scope is given in Tables 1 to 10 which show the total dry film thickness of Sika Unitherm Steel W30 (excluding primer and top sealer) required to provide fire resistance periods in accordance with BS476: Part 21: 1987 of 15 minutes up to 60 minutes for differing sections and section s. 2. This certification is designed to demonstrate compliance of the product or system specifically with Approved Document B (England and Wales), D of the Technical Standards (Scotland), Technical Booklet E (N. Ireland). If compliance is required to other regulatory or guidance documents there may be additional considerations or conflict to be taken into account. 3. The products are approved on the basis of: i) Initial type testing. ii) A design appraisal against TS15. iii) Certification of quality management system to ISO 9001: 2000. iv) Inspection and surveillance of y production control. v) Audit testing. 4. The data referring to three-sided fire exposure of beams relate to beams supporting concrete floor slabs. Separate consideration is required where this is not the case. 5. The data shown is applicable to steel sections galvanised or blast cleaned to Swedish Standard SA2.5 or equivalent and primed with a suitable and compatible primer. Specifications of surface preparations, primers and top sealers is available from Sika Deutschland GmbH whose responsibility is to ensure that Sika Unitherm Steel W30 is compatible for use in respect of both ambient and fire conditions. The total dry film thickness of primer and top sealer together should not exceed 0.1. 6. The data for I-section beams, I section columns and hollow columns at design temperatures of 620 o C, 550 o C and 520 o C respectively is applicable to horizontal, vertical, flexural and compression members supporting loads up to the maximum design loads specified in BS449: Part 2. For other design temperatures it should be confirmed it is acceptable to utilise these temperatures prior to using the data for approval purposes. 7. The approval relates to on going production. Product and/or its iediate packaging is identified with the manufacturers name, the product name or number, the CERTIFIRE name or name and mark, together with the CERTIFIRE certificate number and application where appropriate. 8. The data shown in the tables are based on an assessment which complies with the criteria for acceptability now incorporated within the Certifire scheme. 9. The assessment considered steel design temperatures in the range 500 o C to 700 o C. Page 2 of 13 Signed Issued: 1st October 2007

Sika Unitherm Steel W30 Table 1: I- Columns/Beams 500 o C 15 minutes 30 minutes 320 0.175 200 0.173 245 0.238 290 0.303 is intumescent only 205 0.180 250 0.245 295 0.310 210 0.187 255 0.252 300 0.319 215 0.194 260 0.259 305 0.328 220 0.202 265 0.267 310 0.337 225 0.209 270 0.274 315 0.346 230 0.216 275 0.281 320 0.355 235 0.223 280 0.288 240 0.231 285 0.296 Page 3 of 13 Signed Issued: 1st October 2007

Table 1continued: I- Columns/Beams 500 o C 45 minutes 60 minutes 65 0.180 190 0.500 25 0.326 120 0.739 70 0.199 195 0.526 30 0.348 125 0.761 75 0.217 200 0.553 35 0.370 130 0.783 80 0.236 205 0.579 40 0.391 135 0.804 85 0.254 210 0.605 45 0.413 140 0.826 90 0.273 215 0.632 50 0.435 145 0.848 95 0.291 220 0.658 55 0.457 150 0.870 100 0.310 225 0.684 60 0.478 155 0.891 105 0.321 230 0.711 65 0.500 160 0.913 110 0.331 235 0.737 70 0.522 165 0.935 115 0.342 240 0.763 75 0.543 170 0.957 120 0.352 245 0.789 80 0.565 175 0.978 125 0.363 250 0.816 85 0.587 180 1.000 130 0.373 255 0.842 90 0.609 185 1.022 135 0.384 260 0.868 95 0.630 190 1.043 140 0.394 265 0.895 100 0.652 195 1.065 145 0.405 270 0.921 105 0.674 200 1.087 150 0.416 275 0.947 110 0.696 205 1.109 155 0.426 280 0.974 115 0.717 160 0.437 285 1.000 165 0.447 290 1.026 170 0.458 295 1.053 175 0.468 300 1.079 180 0.479 305 1.105 185 0.489 is intumescent only Page 4 of 13 Signed Issued: 1st October 2007

Table 2: I- Columns/Beams 550 o C 15 minutes 30 minutes 320 0.175 220 0.175 255 0.213 290 0.250 Page 5 of 13 Signed Issued: 1st October 2007 225 0.180 260 0.218 295 0.256 230 0.185 265 0.223 300 0.261 235 0.191 270 0.229 305 0.267 240 0.196 275 0.234 310 0.272 245 0.202 280 0.240 315 0.278 250 0.207 285 0.245 320 0.283 45 minutes 60 minutes 90 0.180 205 0.429 60 0.215 155 0.750 95 0.196 210 0.437 65 0.263 160 0.769 100 0.213 215 0.445 70 0.310 165 0.788 105 0.229 220 0.453 75 0.358 170 0.808 110 0.245 225 0.460 80 0.405 175 0.827 115 0.261 230 0.468 85 0.453 180 0.846 120 0.278 235 0.476 90 0.500 185 0.865 125 0.294 240 0.484 95 0.519 190 0.885 130 0.310 245 0.492 100 0.538 195 0.904 135 0.318 255 0.526 105 0.558 200 0.923 140 0.326 260 0.553 110 0.577 205 0.942 145 0.334 265 0.579 115 0.596 210 0.962 150 0.342 270 0.605 120 0.615 215 0.981 155 0.350 275 0.632 125 0.635 220 1.000 160 0.358 280 0.658 130 0.654 225 1.019 165 0.365 285 0.684 135 0.673 230 1.038 170 0.373 290 0.711 140 0.692 235 1.058 175 0.381 295 0.737 145 0.712 240 1.077 180 0.389 300 0.763 150 0.731 245 1.096 185 0.397 305 0.789 190 0.405 310 0.816 195 0.413 315 0.842 200 0.421 320 0.868 is intumescent only. Columns that are loaded to the maximum permissible design load.

Table 3: I- Columns/Beams 600 o C 15 minutes 30 minutes 320 0.175 275 0.175 300 0.202 280 0.180 305 0.207 285 0.185 310 0.213 290 0.191 315 0.218 295 0.196 320 0.223 45 minutes 60 minutes 125 0.180 225 0.391 50 0.177 160 0.614 130 0.196 230 0.398 55 0.196 165 0.636 135 0.213 235 0.405 60 0.215 170 0.659 140 0.229 240 0.412 65 0.234 175 0.682 145 0.245 245 0.419 70 0.253 180 0.705 150 0.261 250 0.425 75 0.272 185 0.727 155 0.278 255 0.432 80 0.291 190 0.750 160 0.294 260 0.439 85 0.310 195 0.773 165 0.310 265 0.446 90 0.329 200 0.795 170 0.317 270 0.453 95 0.348 205 0.818 175 0.324 275 0.459 100 0.367 210 0.841 180 0.330 280 0.466 105 0.386 215 0.864 185 0.337 285 0.473 110 0.405 220 0.886 190 0.344 290 0.480 115 0.424 225 0.909 195 0.351 295 0.486 120 0.443 230 0.932 200 0.358 300 0.493 125 0.462 235 0.955 205 0.364 305 0.500 130 0.481 240 0.977 210 0.371 310 0.507 135 0.500 245 1.000 215 0.378 315 0.514 140 0.523 250 1.023 220 0.385 320 0.520 145 0.545 255 1.045 150 0.568 260 1.068 155 0.591 265 1.091 is intumescent only. Page 6 of 13 Signed Issued: 1st October 2007

Table 4: I- Beams 620 o C 15 minutes 30 minutes 320 0.175 280 0.176 295 0.189 310 0.202 285 0.180 300 0.193 315 0.206 290 0.184 305 0.197 320 0.210 45 minutes 60 minutes 140 0.180 235 0.378 64 0.176 195 0.633 Page 7 of 13 Signed Issued: 1st October 2007 145 0.193 240 0.386 65 0.180 200 0.650 150 0.206 245 0.394 70 0.202 205 0.667 155 0.219 250 0.401 75 0.223 210 0.683 160 0.232 255 0.409 80 0.245 215 0.700 165 0.245 260 0.416 85 0.267 220 0.717 170 0.258 265 0.424 90 0.288 225 0.733 175 0.271 270 0.432 95 0.310 230 0.750 180 0.284 275 0.439 100 0.326 235 0.767 185 0.297 280 0.447 105 0.342 240 0.783 190 0.310 285 0.454 110 0.358 245 0.800 195 0.318 290 0.462 115 0.373 250 0.817 200 0.325 295 0.470 120 0.389 255 0.833 205 0.333 300 0.477 125 0.405 260 0.850 210 0.340 305 0.485 130 0.421 265 0.867 215 0.348 310 0.492 135 0.437 270 0.883 220 0.356 315 0.500 140 0.453 275 0.900 225 0.363 320 0.508 145 0.468 280 0.917 230 0.371 150 0.484 285 0.933 155 0.500 290 0.950 160 0.517 295 0.967 165 0.533 300 0.983 170 0.550 305 1.000 175 0.567 310 1.017 180 0.583 315 1.033 185 0.600 320 1.050 190 0.617 is intumescent only. Beams with concrete slabs that are loaded to the maximum permissible design load.

Sika Unitherm Steel W30 Table 5: I- Columns/ Beams 650 o C 15 minutes 30 minutes 320 0.175 320 0.175 Table 5 continued: I- Columns/ Beams 650 o C 45 minutes 60 minutes 190 0.180 260 0.301 70 0.180 200 0.500 195 0.189 265 0.310 75 0.199 205 0.523 200 0.197 270 0.326 80 0.217 210 0.545 205 0.206 275 0.342 85 0.236 215 0.568 210 0.215 280 0.358 90 0.254 220 0.591 215 0.223 285 0.373 95 0.273 225 0.614 220 0.232 290 0.389 100 0.291 230 0.636 225 0.241 295 0.405 105 0.310 235 0.659 230 0.249 300 0.421 110 0.320 240 0.682 235 0.258 305 0.437 115 0.330 245 0.705 240 0.267 310 0.453 120 0.340 250 0.727 245 0.275 315 0.468 125 0.350 255 0.750 250 0.284 320 0.484 130 0.360 260 0.773 255 0.293 135 0.370 265 0.795 140 0.380 270 0.818 145 0.390 275 0.841 150 0.400 280 0.864 155 0.410 285 0.886 160 0.420 290 0.909 165 0.430 295 0.932 170 0.440 300 0.955 175 0.450 305 0.977 180 0.460 310 1.000 185 0.470 315 1.023 190 0.480 320 1.045 195 0.490 is intumescent only. Page 8 of 13 Signed Issued: 1st October 2007

Table 6 : I- Columns/ Beams 700 o C 15 minutes 30 minutes 320 0.175 320 0.175 Table 6 continued: I- Columns/ Beams 700 o C 45 minutes 60 minutes 205 0.174 265 0.248 95 0.180 210 0.434 210 0.180 270 0.254 100 0.196 215 0.442 215 0.186 275 0.260 105 0.213 220 0.450 220 0.192 280 0.267 110 0.229 225 0.459 225 0.199 285 0.273 115 0.245 230 0.467 230 0.205 290 0.279 120 0.261 235 0.475 235 0.211 295 0.285 125 0.278 240 0.483 240 0.217 300 0.291 130 0.294 245 0.492 245 0.223 305 0.298 135 0.310 250 0.500 250 0.230 310 0.304 140 0.318 255 0.533 255 0.236 315 0.310 145 0.327 260 0.567 260 0.242 320 0.324 150 0.335 265 0.600 155 0.343 270 0.633 160 0.351 275 0.667 165 0.360 280 0.700 170 0.368 285 0.733 175 0.376 290 0.767 180 0.384 295 0.800 185 0.393 300 0.833 190 0.401 305 0.867 195 0.409 310 0.900 200 0.417 315 0.933 205 0.426 320 0.967 is intumescent only. Page 9 of 13 Signed Issued: 1st October 2007

Table 7: Hollow Columns - 15 Minutes () Required for a Design Temperature of Factor up to m -1 500 o C 520 o C 550 o C 590 o C 650 o C 700 o C 320 0.264 0.264 0.264 0.264 0.264 0.264 is intumescent only. Table applies to circular and rectangular sections. A temperature of 520 o C is applicable to sections loaded to the maximum permissible design load. Page 10 of 13 Signed Issued: 1st October 2007

Table 8: Hollow Columns - 30 Minutes () Required for a Design Temperature of Factor up to m -1 500o C 520 o C 550 o C 590 o C 650 o C 700 o C 135 0.264 0.264 0.264 0.264 0.264 0.264 140 0.273 0.264 0.264 0.264 0.264 0.264 145 0.285 0.264 0.264 0.264 0.264 0.264 150 0.298 0.264 0.264 0.264 0.264 0.264 155 0.310 0.264 0.264 0.264 0.264 0.264 160 0.322 0.276 0.264 0.264 0.264 0.264 165 0.335 0.287 0.264 0.264 0.264 0.264 170 0.347 0.299 0.264 0.264 0.264 0.264 175 0.359 0.310 0.264 0.264 0.264 0.264 180 0.372 0.321 0.264 0.264 0.264 0.264 185 0.384 0.333 0.264 0.264 0.264 0.264 190 0.396 0.344 0.264 0.264 0.264 0.264 195 0.408 0.356 0.264 0.264 0.264 0.264 200 0.421 0.367 0.264 0.264 0.264 0.264 205 0.433 0.379 0.264 0.264 0.264 0.264 210 0.445 0.390 0.264 0.264 0.264 0.264 215 0.458 0.401 0.270 0.264 0.264 0.264 220 0.470 0.413 0.290 0.264 0.264 0.264 225 0.491 0.424 0.310 0.264 0.264 0.264 230 0.511 0.436 0.330 0.264 0.264 0.264 235 0.532 0.447 0.350 0.264 0.264 0.264 240 0.553 0.459 0.370 0.274 0.264 0.264 245 0.574 0.470 0.390 0.292 0.264 0.264 250 0.594 0.488 0.410 0.310 0.264 0.264 255 0.615 0.506 0.430 0.328 0.264 0.264 260 0.643 0.524 0.450 0.346 0.264 0.264 265 0.672 0.543 0.470 0.363 0.264 0.264 270 0.700 0.561 0.485 0.381 0.264 0.264 275 0.728 0.579 0.499 0.399 0.264 0.264 280 0.757 0.597 0.514 0.417 0.264 0.264 285 0.785 0.615 0.528 0.434 0.264 0.264 290 0.813 0.658 0.543 0.452 0.264 0.264 295 0.842 0.700 0.557 0.470 0.264 0.264 300 0.743 0.572 0.485 0.264 0.264 305 0.785 0.586 0.499 0.264 0.264 310 0.828 0.601 0.514 0.287 0.264 315 0.615 0.528 0.310 0.264 320 0.636 0.543 0.333 0.264 is intumescent only. Table applies to circular and rectangular sections. A temperature of 520 o C is applicable to sections loaded to the maximum permissible design load. Page 11 of 13 Signed Issued: 1st October 2007

Table 9: Hollow Columns - 45 Minutes () Required for a Design Temperature of Factor up to m -1 500o C 520 o C 550 o C 590 o C 650 o C 700 o C 70 0.264 0.264 0.264 0.264 0.264 0.264 75 0.270 0.264 0.264 0.264 0.264 0.264 80 0.310 0.264 0.264 0.264 0.264 0.264 85 0.350 0.264 0.264 0.264 0.264 0.264 90 0.390 0.302 0.283 0.264 0.264 0.264 95 0.430 0.342 0.310 0.264 0.264 0.264 100 0.470 0.382 0.337 0.270 0.264 0.264 105 0.615 0.422 0.363 0.290 0.264 0.264 110 0.630 0.462 0.390 0.310 0.264 0.264 115 0.646 0.534 0.417 0.330 0.264 0.264 120 0.661 0.615 0.443 0.350 0.264 0.264 125 0.677 0.631 0.470 0.370 0.264 0.264 130 0.692 0.646 0.518 0.390 0.278 0.264 135 0.708 0.662 0.567 0.410 0.294 0.264 140 0.723 0.678 0.615 0.430 0.310 0.264 145 0.739 0.694 0.629 0.450 0.326 0.264 150 0.754 0.709 0.643 0.470 0.342 0.264 155 0.770 0.725 0.658 0.494 0.358 0.264 160 0.785 0.741 0.672 0.518 0.374 0.264 165 0.800 0.757 0.686 0.543 0.390 0.264 170 0.816 0.772 0.700 0.567 0.406 0.264 175 0.831 0.788 0.714 0.591 0.422 0.264 180 0.847 0.804 0.728 0.615 0.438 0.278 185 0.862 0.820 0.743 0.636 0.454 0.294 190 0.835 0.757 0.658 0.470 0.310 195 0.851 0.771 0.679 0.491 0.326 200 0.785 0.700 0.511 0.342 205 0.799 0.721 0.532 0.358 210 0.813 0.743 0.553 0.374 215 0.828 0.764 0.574 0.390 220 0.842 0.785 0.594 0.406 225 0.856 0.806 0.615 0.422 230 0.828 0.636 0.438 235 0.849 0.658 0.454 240 0.679 0.470 245 0.700 0.499 250 0.721 0.528 255 0.743 0.557 260 0.764 0.586 265 0.785 0.615 270 0.806 0.643 275 0.828 0.672 280 0.849 0.700 285 0.728 290 0.757 295 0.785 300 0.813 305 0.842 is intumescent only. Table applies to circular and rectangular sections. A temperature of 520 o C is applicable to sections loaded to the maximum permissible design load. Page 12 of 13 Signed Issued: 1st October 2007

Table 10: Hollow Columns - 60 Minutes () Required for a Design Temperature of Factor up to m -1 500o C 520 o C 550 o C 590 o C 650 o C 700 o C 55 0.581 0.576 0.563 0.554 0.547 60 0.599 0.589 0.563 0.554 0.547 65 0.618 0.602 0.563 0.554 0.547 70 0.637 0.615 0.576 0.554 0.547 75 0.655 0.628 0.589 0.554 0.547 80 0.674 0.641 0.602 0.554 0.547 85 0.692 0.654 0.615 0.554 0.547 90 0.711 0.667 0.628 0.566 0.547 95 0.729 0.680 0.641 0.579 0.547 100 0.748 0.693 0.654 0.591 0.547 105 0.766 0.707 0.667 0.603 0.547 110 0.785 0.720 0.680 0.615 0.558 115 0.804 0.733 0.693 0.627 0.570 120 0.822 0.746 0.707 0.639 0.581 125 0.841 0.759 0.720 0.651 0.592 130 0.859 0.772 0.733 0.664 0.604 135 0.785 0.746 0.676 0.615 140 0.798 0.759 0.688 0.626 145 0.811 0.772 0.700 0.638 150 0.824 0.785 0.712 0.649 155 0.837 0.798 0.724 0.660 160 0.850 0.811 0.736 0.672 165 0.863 0.824 0.749 0.683 170 0.837 0.761 0.694 175 0.850 0.773 0.706 180 0.863 0.785 0.717 185 0.797 0.728 190 0.809 0.740 195 0.821 0.751 200 0.834 0.762 205 0.846 0.774 210 0.858 0.785 215 0.796 220 0.808 225 0.819 230 0.830 235 0.842 240 0.853 245 0.864 is intumescent only. Table applies to circular and rectangular sections. A temperature of 520 o C is applicable to sections loaded to the maximum permissible design load. Page 13 of 13 Signed Issued: 1st October 2007