| 摘要 |
PURPOSE: A channel base of a large distribution board including an earthquake-proof frame is provided to stand vibration which is acted in an orthogonal direction to the direction in parallel to the ground. CONSTITUTION: A bottom body part(12) is parallel to a body part(22) and is fixed to the ground(50). A reinforcing support part(14) is extended from both sides to the upper side along the longitudinal direction of the bottom body part and is combined with the support piece along the longitudinal direction. |
