Hi, I have calculate the clamp force, which mean that the tensile force acting on bolt when it clamped 2 or more surface together. Since the value of tensile force calculated is significantly higher. so I can't ignore it. If a box fastened by bolts and the box experiencing like 20 g forward /upward/downward force on its c.g, does the reaction forces on y-axis of each bolt should be added or minus with the clamp/tensile force of the bolt?