Gamcorp (Melbourne) Pty Ltd A.C.N 141 076 904 A.B.N 73 015 060 240www.gamcorp.com.au melbourne@gamcorp.com.au

Suite 4, 346 Ferntree Gully Rd, Notting Hill VIC 3168 Tel: 03 9543 2211 Fax: 03 9543 4046

Our Ref: 1850

3 September 2015

Xiamen Antai New Energy Tech. Co., Ltd.Room 402, No.21 Wanghai Road, Software Park IISiming District, Xiamen, China 361008

Array Frame Engineering Certificate

Installation of Tilt mounted solar array frame on tin roofGamcorp (Melbourne) Pty Ltd, being Structural Engineers within the meaning of Australian Building Regulations, have carried out a structural design check of the Xiamen Antai New Energy Tech. Co., Ltd. solar tilt frame for the use within Australia. The design check has been based on the information provided by Xiamen Antai New Energy Tech. Co., Ltd.

We find the Installation of tilt solar array frame on tin roof to be structurally sufficient for Australian use based on the following conditions:

• Wind Loads to AS/NZ1170.2:2011 Admt 3-2012• Wind Region A, B, C, D• Wind Terrain Category 2 & 3• Wind average recurrence interval of 200 years region A and B• Wind average recurrence interval of 500 years region C and D• Maximum Building height 20 m• Timber with joint type classification J5 and J6 are excluded from this certification• Maximum tilt angle 1o to 60o to the horizontal• Max. Solar Panel Dimensions 1640×992• Regional Wind speed:

Wind Zone A B C D

Wind Speed (m/s) 43 52 69 88

Refer to attached summary table for interface spacing.Construction is to be carried out strictly in accordance with the manufacturers instructions. This work was designed in accordance with the provisions of Australian Building Regulations and in accordance with sound, widely accepted engineering principles.

Yours faithfully,Gamcorp (Melbourne) Pty Ltd

Martin Gamble Milan Bjelobrk Managing Director MIEAust, CPEng, NPER 2210984,MAICD RPEQ 12090, RBP EC-38461, NT BPB 139671ES

ISO 9001:2008 Registered Firm Certificate No: AU1222

Structural Design Documentation

Tilt System Interface Spacing TableAccording to AS/NZS 1170.2-2011 Amdt 3-2012

Within Australia

For: Xiamen Antai New Energy Tech. Co., Ltd.

Job Number: 1850Date: September 3, 2015

Terrain Category 2

Gamcorp (Melbourne) Pty LtdConsulting Structural & Civil Engineers

A.C.N 141 076 904A.B.N 73 015 060 240

www.gamcorp.com.au melbourne@gamcorp.com.au

Suite 4/ 346 Ferntree Gully Rd, Notting Hill VIC 3168. Tel: 03 9543 2211 Fax: 03 9543 4046

COPYRIGHT: The concepts and information contained in this document are the property of Gamcorp (Melbourne) Pty Ltd. Use or copying of this document in whole or in part without the written permission of Gamcorp constitutes an infringement of copyright.

LIMITATION: This report has been prepared on behalf of and for the exclusive use of Gamcorp (Melbourne) Pty Ltd’s Client, and is subject to and issued in connection with the provisions of the agreement between Gamcorp (Melbourne) Pty Ltd and its Client. Gamcorp (Melbourne) Pty Ltd accepts no liability or responsibility whatsoever for or in respect of any use of or reliance upon this report by any third party.

Client Name

Job No: 1850

Client: Xiamen Antai New Energy Tech. Co., Ltd.

Project: Solar Array Tilt System Spacing Table

Address: Within Australia

Australian StandardsAS 1170. 2011 – Structural Design Actions

Part 0 – General Principles

Part 2 – Wind Actions

AS 1664.1 – Aluminium structures - Limit state design

Wind Terrain Category: WTC2

Designed: B.C

Date: Sep-15

Part 1 – Permanent imposed and other actions

Suite 4/ 346 Ferntree Gully RdNotting Hill VIC 3168

Tel: 03 9543 2211Fax: 03 9543 4046

melbourne@gamcorp.com.auwww.gamcorp.com.au

ISO 9001:2008 Registered FirmCertificate No: AU1222

ISO 9001:2008 Registered FirmCertificate No: AU1222 Page 1 of 5

Client: Xiamen Antai New Energy Tech. Co., Ltd. Job: 1850Project: SolarRoof Interface Spacing Table Date: Sep-15Address: Within AustraliaDesigned: B.C

Tilt System Interface Spacing Table for Tin Roof

Type of Rail Rail IIType of Interface ATL-TYN-56Solar Panel Dimension 1640 mm x 992 mmTerrain category 2

Tilt Angle (Φ) – 1°≤ Φ <15°Building Height – H (m)

H≤10

Internal Internal Internal

A 1232 1435 1188 1383 1163 1354

B 1145 1333 1058 1285 1000 1258

C 394 591 357 536 338 507

D 244 367 222 332 210 314

Tilt Angle (Φ) – 15°≤ Φ< 30°

Building Height – H (m)H≤10

Internal Internal Internal

A 850 1151 771 1110 728 1086

B 581 871 527 790 498 747

C 196 294 178 267 168 252

D 122 183 110 166 104 157

Tilt Angle (Φ) – 30°≤ Φ< 60°Building Height – H (m)

H≤10

Internal Internal Internal

A 631 946 572 858 541 811

B 431 647 391 587 370 555

C 146 219 132 198 125 187

D 90 136 82 123 77 116

Wind Region 10<H≤15 15<H≤20

Interm-ediate Zone

Interm-ediate Zone

Interm-ediate Zone

Wind Region 10<H≤15 15<H≤20

Interm-ediate Zone

Interm-ediate Zone

Interm-ediate Zone

Wind Region 10<H≤15 15<H≤20

Interm-ediate Zone

Interm-ediate Zone

Interm-ediate Zone

ISO 9001:2008 Registered FirmCertificate No: AU1222 Page 2 of 5

Client: Xiamen Antai New Energy Tech. Co., Ltd. Job: 1850Project: SolarRoof Interface Spacing Table Date: Sep-15Address: Within AustraliaDesigned: B.C

Tilt System Interface Spacing Table for Tin Roof

Type of Rail Rail IIIType of Interface ATL-TYN-56Solar Panel Dimension 1640 mm x 992 mmTerrain category 2

Tilt Angle (Φ) – 1°≤ Φ <15°Building Height – H (m)

H≤10

Internal Internal Internal

A 1193 1389 1150 1339 1126 1311

B 1108 1290 1058 1244 1000 1218

C 394 591 357 536 338 507

D 244 367 222 332 210 314

Tilt Angle (Φ) – 15°≤ Φ< 30°Building Height – H (m)

H≤10

Internal Internal Internal

A 850 1114 771 1074 903 1052

B 581 871 527 790 498 747

C 196 294 178 267 168 252

D 122 183 110 166 104 157

Tilt Angle (Φ) – 30°≤ Φ< 60°Building Height – H (m)

H≤10

Internal Internal Internal

A 631 946 572 858 700 1050

B 431 647 391 587 370 555

C 146 219 132 198 125 187

D 90 136 82 123 77 116

Wind Region 10<H≤15 15<H≤20

Interm-ediate Zone

Interm-ediate Zone

Interm-ediate Zone

Wind Region 10<H≤15 15<H≤20

Interm-ediate Zone

Interm-ediate Zone

Interm-ediate Zone

Wind Region 10<H≤15 15<H≤20

Interm-ediate Zone

Interm-ediate Zone

Interm-ediate Zone

ISO 9001:2008 Registered FirmCertificate No: AU1222 Page 3 of 5

Client: Xiamen Antai New Energy Tech. Co., Ltd. Job: 1850Project: SolarRoof Interface Spacing Table Date: Sep-15Address: Within AustraliaDesigned: B.C

Tilt System Interface Spacing Table for Tin Roof

Type of Rail Rail IVType of Interface ATL-TYN-56Solar Panel Dimension 1640 mm x 992 mmTerrain category 2

Tilt Angle (Φ) – 1°≤ Φ <15°Building Height – H (m)

H≤10

Internal Internal Internal

A 980 1141 945 1100 925 1077

B 911 1060 878 1022 860 1001

C 394 591 357 536 338 507

D 244 367 222 332 210 314

Tilt Angle (Φ) – 15°≤ Φ< 30°Building Height – H (m)

H≤10

Internal Internal Internal

A 786 916 758 883 728 864

B 581 850 527 790 498 747

C 196 294 178 267 168 252

D 122 183 110 166 104 157

Tilt Angle (Φ) – 30°≤ Φ< 60°Building Height – H (m)

H≤10

Internal Internal Internal

A 631 946 572 858 541 811

B 431 647 391 587 370 555

C 146 219 132 198 125 187

D 90 136 82 123 77 116

Wind Region 10<H≤15 15<H≤20

Interm-ediate Zone

Interm-ediate Zone

Interm-ediate Zone

Wind Region 10<H≤15 15<H≤20

Interm-ediate Zone

Interm-ediate Zone

Interm-ediate Zone

Wind Region 10<H≤15 15<H≤20

Interm-ediate Zone

Interm-ediate Zone

Interm-ediate Zone

ISO 9001:2008 Registered FirmCertificate No: AU1222 Page 4 of 5

Client: Xiamen Antai New Energy Tech. Co., Ltd. Job: 1850Project: SolarRoof Interface Spacing Table Date: Sep-15Address: Within AustraliaDesigned: B.C

General NotesNote 1 All holes must be pre drilled, with minimum screw embedment of 35 mm into timber.

Note 2 Recommended screws Metal Purlins/Battens Fasteners to use1.2 mm – 2.4 mm 14g-10 TPI Teks screwsWood purlins and Rafter Fasteners to use

14g-10 TPI (T17s)

Note 3 Above Spacing calculated based on 1.5 mm steel purlin OR F17 HardwoodFor material thickness of 1.2 mm or for soft unseasoned timber spacings should bereduced by the following percentages. Material Thickness Region A Region B Region C Region D

Internal Internal Internal Internal

1.2mm thick purlin 20% 20% 20% 20% 20% 20% 20% 20%

12% 12% 12% 12% 0% 0% 0% 0%

Note 4 Minimum of two screws to be used to support each leg

Note 5 Roof structure supporting the solar array must be checked by qualified structural engineer for the new induced loads produced by the PV panels.

Note 6 Following components are satisfied to use according to AS1170.2011 Components Part Number DescriptionStandard Rail ATL-TYN-28 Antai Rail IILight Rail ATL-TYN-53 Antai Rail IIILight Rail CG-010 Antai Rail IV

Inter Clamp ATL-FWNY-09 Internal fixing between rail and Solar Panel

End Clamp ALT-TYN-14 End fixing between rail and Solar Panel

ATL-TYN-57 Adjustable back legs

Splice ATL-TYN-21 Rail Connection

ATL-TYN-56 Tin Roof interface

Note 7

Note 8 Splice connection must placed quarter length of the spacing of the L foot. No Splice connectionshould be placed at the centre of spacing or over the L foot.

Note 9 Figure 1: Shows building dimensions (b,h,d)

Figure 1

Pine and Hardwood (35mm embedment and above)

Interm-ediate Zone

Interm-ediate Zone

Interm-ediate Zone

Interm-ediate Zone

Timber Battens/Purlins

Adjustable tilt legs

Tilt System Interface

Terrain category 2 (TC2) refers to open terrain, including grassland, with well-scattered obstructions having heights generally from 1.5 m to 5 m, with no more than two obstruction per obstructions per hectare.

Structural Design Documentation

Tilt System Interface Spacing TableAccording to AS/NZS 1170.2-2011 Amdt 3-2012

Within Australia

For: Xiamen Antai New Energy Tech. Co., Ltd.

Job Number: 1850Date: September 3, 2015

Terrain Category 3

Gamcorp (Melbourne) Pty LtdConsulting Structural & Civil Engineers

A.C.N 141 076 904A.B.N 73 015 060 240

www.gamcorp.com.au melbourne@gamcorp.com.au

Suite 4/ 346 Ferntree Gully Rd, Notting Hill VIC 3168. Tel: 03 9543 2211 Fax: 03 9543 4046

COPYRIGHT: The concepts and information contained in this document are the property of Gamcorp (Melbourne) Pty Ltd. Use or copying of this document in whole or in part without the written permission of Gamcorp constitutes an infringement of copyright.

LIMITATION: This report has been prepared on behalf of and for the exclusive use of Gamcorp (Melbourne) Pty Ltd’s Client, and is subject to and issued in connection with the provisions of the agreement between Gamcorp (Melbourne) Pty Ltd and its Client. Gamcorp (Melbourne) Pty Ltd accepts no liability or responsibility whatsoever for or in respect of any use of or reliance upon this report by any third party.

Client Name

Job No: 1850

Client: Xiamen Antai New Energy Tech. Co., Ltd.

Project: Solar Array Tilt System Spacing Table

Address: Within Australia

Australian StandardsAS 1170. 2011 – Structural Design Actions

Part 0 – General Principles

Part 2 – Wind Actions

AS 1664.1 – Aluminium structures - Limit state design

Wind Terrain Category: WTC3

Designed: B.C

Date: Sep-15

Part 1 – Permanent imposed and other actions

Suite 4/ 346 Ferntree Gully RdNotting Hill VIC 3168

Tel: 03 9543 2211Fax: 03 9543 4046

melbourne@gamcorp.com.auwww.gamcorp.com.au

ISO 9001:2008 Registered FirmCertificate No: AU1222

ISO 9001:2008 Registered FirmCertificate No: AU1222 Page 1 of 5

Client: Xiamen Antai New Energy Tech. Co., Ltd. Job: 1850Project: SolarRoof Interface Spacing Table Date: Sep-15Address: Within AustraliaDesigned: B.C

Tilt System Interface Spacing Table for Tin Roof

Type of Rail Rail IIType of Interface ATL-TYN-56Solar Panel Dimension 1640 mm x 992 mmTerrain category 3

Tilt Angle (Φ) – 1°≤ Φ <15°Building Height – H (m)

H≤10

Internal Internal Internal

A 1417 1650 1345 1566 1291 1503

B 1316 1533 1249 1454 1199 1396

C 572 858 497 746 446 669

D 355 532 309 463 277 415

Tilt Angle (Φ) – 15°≤ Φ< 30°

Building Height – H (m)H≤10

Internal Internal Internal

A 1137 1324 1073 1256 962 1206

B 843 1229 733 1100 658 986

C 285 427 248 372 222 333

D 177 265 154 230 138 207

Tilt Angle (Φ) – 30°≤ Φ< 60°Building Height – H (m)

H≤10

Internal Internal Internal

A 916 1373 796 1194 714 1071

B 626 939 544 817 488 732

C 211 317 184 276 165 247

D 131 197 114 171 102 153

Wind Region 10<H≤15 15<H≤20

Interm-ediate Zone

Interm-ediate Zone

Interm-ediate Zone

Wind Region 10<H≤15 15<H≤20

Interm-ediate Zone

Interm-ediate Zone

Interm-ediate Zone

Wind Region 10<H≤15 15<H≤20

Interm-ediate Zone

Interm-ediate Zone

Interm-ediate Zone

ISO 9001:2008 Registered FirmCertificate No: AU1222 Page 2 of 5

Client: Xiamen Antai New Energy Tech. Co., Ltd. Job: 1850Project: SolarRoof Interface Spacing Table Date: Sep-15Address: Within AustraliaDesigned: B.C

Tilt System Interface Spacing Table for Tin Roof

Type of Rail Rail IIIType of Interface ATL-TYN-56Solar Panel Dimension 1640 mm x 992 mmTerrain category 3

Tilt Angle (Φ) – 1°≤ Φ <15°Building Height – H (m)

H≤10

Internal Internal Internal

A 1372 1597 1302 1516 1250 1455

B 1274 1484 1209 1408 1161 1352

C 572 858 497 746 446 669

D 355 532 309 463 277 415

Tilt Angle (Φ) – 15°≤ Φ< 30°Building Height – H (m)

H≤10

Internal Internal Internal

A 1101 1281 1045 1216 943 1167

B 843 1190 733 1100 658 986

C 285 427 248 372 222 333

D 177 265 154 230 138 207

Tilt Angle (Φ) – 30°≤ Φ< 60°Building Height – H (m)

H≤10

Internal Internal Internal

A 916 1373 796 1194 700 1050

B 626 939 544 817 488 732

C 211 317 184 276 165 247

D 131 197 114 171 102 153

Wind Region 10<H≤15 15<H≤20

Interm-ediate Zone

Interm-ediate Zone

Interm-ediate Zone

Wind Region 10<H≤15 15<H≤20

Interm-ediate Zone

Interm-ediate Zone

Interm-ediate Zone

Wind Region 10<H≤15 15<H≤20

Interm-ediate Zone

Interm-ediate Zone

Interm-ediate Zone

ISO 9001:2008 Registered FirmCertificate No: AU1222 Page 3 of 5

Client: Xiamen Antai New Energy Tech. Co., Ltd. Job: 1850Project: SolarRoof Interface Spacing Table Date: Sep-15Address: Within AustraliaDesigned: B.C

Tilt System Interface Spacing Table for Tin Roof

Type of Rail Rail IVType of Interface ATL-TYN-56Solar Panel Dimension 1640 mm x 992 mmTerrain category 3

Tilt Angle (Φ) – 1°≤ Φ <15°Building Height – H (m)

H≤10

Internal Internal Internal

A 1127 1313 1070 1246 1027 1196

B 1047 1219 994 1157 954 1111

C 572 858 497 746 446 669

D 355 532 309 463 277 415

Tilt Angle (Φ) – 15°≤ Φ< 30°Building Height – H (m)

H≤10

Internal Internal Internal

A 904 1053 858 999 824 959

B 840 978 733 928 658 891

C 285 427 248 372 222 333

D 177 265 154 230 138 207

Tilt Angle (Φ) – 30°≤ Φ< 60°Building Height – H (m)

H≤10

Internal Internal Internal

A 916 1157 796 1098 714 1054

B 626 939 544 817 488 732

C 211 317 184 276 165 247

D 131 197 114 171 102 153

Wind Region 10<H≤15 15<H≤20

Interm-ediate Zone

Interm-ediate Zone

Interm-ediate Zone

Wind Region 10<H≤15 15<H≤20

Interm-ediate Zone

Interm-ediate Zone

Interm-ediate Zone

Wind Region 10<H≤15 15<H≤20

Interm-ediate Zone

Interm-ediate Zone

Interm-ediate Zone

ISO 9001:2008 Registered FirmCertificate No: AU1222 Page 4 of 5

Client: Xiamen Antai New Energy Tech. Co., Ltd. Job: 1850Project: SolarRoof Interface Spacing Table Date: Sep-15Address: Within AustraliaDesigned: B.C

General NotesNote 1 All holes must be pre drilled, with minimum screw embedment of 35 mm into timber.

Note 2 Recommended screws Metal Purlins/Battens Fasteners to use1.2 mm – 2.4 mm 14g-10 TPI Teks screwsWood purlins and Rafter Fasteners to use

14g-10 TPI (T17s)

Note 3 Above Spacing calculated based on 1.5 mm steel purlin OR F17 HardwoodFor material thickness of 1.2 mm or for soft unseasoned timber spacings should bereduced as follows, Material Thickness Region A Region B Region C Region D

Internal Internal Internal Internal

1.2mm thick purlin 20% 20% 20% 20% 20% 20% 20% 20%

12% 12% 12% 12% 0% 0% 0% 0%

Note 4 Minimum of two screws to be used to support each leg

Note 5 Roof structure supporting the solar array must be checked by qualified structural engineer for the new induced loads produced by the PV panels.

Note 6 Following components are satisfied to use according to AS1170.2011 Components Part Number DescriptionStandard Rail ATL-TYN-28 Antai Rail IILight Rail ATL-TYN-53 Antai Rail IIILight Rail CG-010 Antai Rail IV

Inter Clamp ATL-FWNY-09 Internal fixing between rail and Solar Panel

End Clamp ALT-TYN-14 End fixing between rail and Solar Panel

ATL-TYN-57 Adjustable back legs

Splice ATL-TYN-21 Rail Connection

ATL-TYN-56 Tin Roof interface

Note 7

Note 8 Splice connection must placed quarter length of the spacing of the L foot. No Splice connectionshould be placed at the centre of spacing or over the L foot.

Note 9 Figure 1: Shows building dimensions (b,h,d)

Figure 1

Pine and Hardwood (35mm embedment and above)

Interm-ediate Zone

Interm-ediate Zone

Interm-ediate Zone

Interm-ediate Zone

Timber Battens/Purlins

Adjustable tilt legs

Tilt System Interface

Terrain category 3(TC3) refers to numerous closely spaced obstructions having heights generally from 3 m to 10 m. For example suburban housing or light industrial estates. Refer clause 4.2.1 of AS/NZS 1170.2-2011 Amdt 2-2012 for definition of Terrain category 3.