All of these hazard categories are described in detail in OSHA’s CFR 1926 Support Q-Concrete and Masonry Construction. If you’re going to spend a lot of time in concrete construction, you need to be intimately familiar with this OSHA standard. It’s extremely important. A cubic yard of concrete weighs approximately 3,000 pounds. Workers who pour, pump, vibrate concrete may face hazards from stooped postures. Risk Description: Prolonged bending of the back during the pouring, pumping and vibrating of concrete can cause injury to muscles, nerves, discs and ligaments of the low back.

Risk Description: Working in kneeling or squatting posture while finishing concrete can increase forces in the knee. The cumulative effects of kneeling or squatting may lead to knee injuries such as bursitis or osteoarthritis and in some cases may contribute to low back pain. Pumping  Concrete Violent ejection of concrete from hose at first moment of delivery. Struck by concrete which may cause body injuries; falls onto the deck or off the edge of the deck. No warning given prior to starting or re-commencing the pour.