Guideline for Sunshades Spec, Design Requirements & Std Drawings Version 1.0

GU-631 Page 7 Dec 2009

2.2.1 General

As Sunshades are specifically designed to protect equipment from solar radiation, their sizes are directly related to the angle of the sun during the most intense period of this solar radiation. Accordingly, the equipment that needs to be shaded shall be within the boundaries and angles shown in Figure 1 below:-

North Side 85 from the horizontal

South Side 70 from the horizontal

East & West Sides 50 from the horizontal

SUNSHADE ROOF SUNSHADE ROOF

50O50O70O85ONORTH SOUTH EAST WEST

GL

EQUIPMENT TO BE SHADED

SUN

Figure 1

It should be noted that the angle shall be taken from the underside and around the perimeter of equipment to be protected and not ground level. Also, shading can be increased by installing side cladding; however a design check against the extra wind forces need to be made.

2.2.2 Materials

All materials required for Sunshades shall comply with the relevant Standards listed in Section 1.4.2 of this specification Guideline.

2.2.3 Design

All Sunshades designs shall be in accordance with the relevant Standards listed in Section 1.4.1.of this specification Guideline.

2.2.3.1 Steel Structure

The steel structures, both with and without integral lifting facilities shall be designed in accordance with EN 1993 (or Eurocode 3).