Steel Buildings in Europe

Part 5: Detailed Design of Trusses 5 - 4 A A L On this plan view, main trusses are drawn in blue: their span L is the long side of the column mesh. The secondary trusses have a shorter span A (distance between main trusses). This arrangement is currently used for “saw tooth roofs”, as shown on the vertical section:  Main beams are trusses with parallel chords  Secondary beams (green) have a triangular shape. in red, members supporting the north oriented windows Figure 1.4 General arrangement 3 1.3 Different shapes of trusses A large range is available for the general shapes of the trusses. Some of the commonly used shapes are shown in Table 1.1.