نظرًا لاتجاه القوى في العنصر 1 نحو المفصل، يصبح المفصل مضغوطًا، بينما تبعد القوى في العنصر 4 عن المفصل مما يجعل العنصر 4 مشدودًا.
As the force in member 1 is towards the joint, the member is under compression, the force in member 4 is away from the joint so the member 4 is under tension.