SafetyCâu 580 / 700
Before a mobile crane makes a lift on a jobsite, which combination of practices BEST supports a safe lift?
a.Guess the load weight and lift quickly
b.Skip the load chart if the operator is experienced
c.Set outriggers on firm, level ground with proper pads and stay within the crane's rated load chart
d.Extend the boom fully to keep loads far from the crane
Giải thích
A safe lift requires the crane set on firm, level ground with outriggers fully deployed on adequate pads, and the load kept within the capacity shown on the rated load chart for that configuration. Option a and b abandon the engineering controls that prevent overloading and tip-over. Option d increases the load radius, which sharply reduces capacity and can cause tipping. Ground support, outriggers, and the load chart together keep the lift within safe limits.
Luyện miễn phí toàn bộ 700 câu hỏi — không cần đăng ký.
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