1. Use of diagonals and consoles when building 2014-06 Altrad Balliauw – all sites (Look out for site-specific rules!) Floor length Diagonal length Single building Number of diagonals for floor load 150 kg/m² Number of diagonals for floor load 200 kg/m² Number of diagonals for floor load 300 kg/m² NP = not possible This also applies if there are several levels lying one above the other, whereby only 1 floor at a time may be loaded with the useful payload and a second level may only have half the payload. Building may not jeopardise the stability of the scaffolding, and may never take place on mobile scaffolding The number of diagonals must always be placed on both sides of the development. Floor0.73 m1.09 m1.57 m2.07 m2.57 m3.07 m Diagonal 0.73 m 111111 1.09 m 111111 1.57 m 111111 2.07 m 111111 2.57 m 111112 3.07 m 111122 Floor0.73 m1.09 m1.57 m2.07 m2.57 m3.07 m Diagonal 0.73 m 111111 1.09 m 111111 1.57 m 111111 2.07 m 111122 2.57 m 111222 3.07 m 1122NP Floor0.73 m1.09 m1.57 m2.07 m2.57 m3.07 m Diagonal 0.73 m 111111 1.09 m 111111 1.57 m 111111 2.07 m 111111 2.57 m 111122 3.07 m 111222

2. Multiple buildings Number of diagonals for floor load 150 kg/m² Number of diagonals for floor load 200 kg/m² Number of diagonals for floor load 300 kg/m² NP = not possible This also applies if there are several levels lying one above the other, whereby only 1 floor at a time may be loaded with the useful payload and a second level may only have half the payload. Building may not jeopardise the stability of the scaffolding, and may never take place on mobile scaffolding The specified number of diagonals must always be placed on 2 sections located next to each other, on the outside the numbers of the single buildings are used. Use of diagonals and consoles when building 2014-06 Altrad Balliauw – all sites (Look out for site-specific rules!) Floor0.73 m1.09 m1.57 m2.07 m2.57 m3.07 m Diagonal 0.73 m 111111 1.09 m 111111 1.57 m 111111 2.07 m 111122 2.57 m 11222NP 3.07 m 1122NP Floor0.73 m1.09 m1.57 m2.07 m2.57 m3.07 m Diagonal 0.73 m 111111 1.09 m 111111 1.57 m 111122 2.07 m 111222 2.57 m 1122NP 3.07 m 122NP Floor0.73 m1.09 m1.57 m2.07 m2.57 m3.07 m Diagonal 0.73 m 111111 1.09 m 111112 1.57 m 111222 2.07 m 1122NP 2.57 m 122NP 3.07 m 22NP

3. Consoles Console 0.39 m Console 0.73 m Load class in accordance with EN 12811-1 Use of diagonals and consoles when building 2014-06 Altrad Balliauw – all sites (Look out for site-specific rules!) Load classEvenly distributed load kN/m2 Pressure load kN (500mmX500mm) Pressure load kN (200mmX200mm) 10.751.51 2 1 32 1 4331 54.531 6631 Span L(m)Admissible load q[kN/m]*Load class (EN 12811-1) 3.075.00 kN/m25 2.576.00 kN/m26 2.077.50 kN/m26 Span L(m)Admissible load q[kN/m]*Load class (EN 12811-1) 3.072.08 kN/m23 2.572.60 kN/m23 2.073.36 kN/m24

4. Consoles Console 1.09 m without extra connection between the struts Console 1.09 m with connection between the struts using a beam Load class in accordance with EN 12811-1 Use of diagonals and consoles when building 2014-06 Altrad Balliauw – all sites (Look out for site-specific rules!) Load classEvenly distributed load kN/m2 Pressure load kN (500mmX500mm) Pressure load kN (200mmX200mm) 10.751.51 2 1 32 1 4331 54.531 6631 Span L(m)Admissible load q[kN/m]*Load class (EN 12811-1) 3.071.26 kN/m21 2.571.58 kN/m22 2.072.07 kN/m23 Span L(m)Admissible load q[kN/m]*Load class (EN 12811-1) 3.072.70 kN/m23 2.573.28 kN/m24 2.074.15 kN/m24