Balance weight block installation position is not accurate, will cause the boom and the balance arm balance torque deviation is too large, easily lead to instability of the tower crane.
平衡重块安装位置不准确，会造成起重臂与平衡臂平衡力矩偏差过大，轻易造成塔吊失稳。
2
Assembly equipment and assembly method differs as span, weight and installation height of girder.
钢梁的跨度、量和安装高度不同，适合的吊装机械和吊装方法亦随之而异。
3
As against an inlet manifold engine of the same power, the turbo engine requires a smaller installation space and as such has a better power-weight ratio.