Study Guide 3 Construction Safety

Study Guide 3 Construction Safety Work-zones safety confined spaces have poor ventilation and have limited __________ ️️egress Hazards include: ️️poor air quality explosions fire electrocution moving machinery parts ________ inform workers about potential hazards or unsafe practices. ️️caution signs __________ are identified by a triangular shaped reflective yellow-orange and red emblem. ️️slow moving vehicles _______ are used across wall openings or as barriers around floor openings to prevent falls. ️️Railings You should not enter an area with red warning barricades unless you are _______ to, even if you are alert and aware of the hazards, and proceed with extreme caution. ️️Authorized Danger signs are usually: ️️black red white Infectious agents that create a real or potential health risk are known as: ️️Biological hazards The basic color used for caution sign is: ️️yellow An permit entry must contain all of the following information: ️️required protective equipment a list of authorized entrants air quality test results _________ must be posted at the entrance of the confined space throughout the work process ️️Confined space entry permits Entry into a confined space begins________ the entrance of the confined space ️️your body passes through The first symptom in an environment with a slight lack of oxygen is: ️️fast breathing and heartbeat An _______atmosphere can be just as hazardous as an oxygen deprived atmosphere. ️️Oxygen enriched The test for potential toxic contaminants should be done after testing ___________ ️️oxygen flammable gases The type of construction hazard that can bury a worker alive is___________ ️️engulfment In confined space operations, the worker that is responsible for knowing first aid and cpr is the _______ ️️rescue worker The type of rescue that usually done by a confined space attendant is a ________ ️️non-entry rescue The air in a confined space is usually tested by using ️️test meters Electrical shock is a hazard you may encounter during an _______ ️️excavation Ladders used as exits from trenches must be located within _______ in any trench that is over_________ ️️25ft 4-feet deep There must be a minimum of ______ between the edge of the excavation any equipment tools or spoils. ️️2-feet `__________ from nearby construction equipment can contribute to the collapse of the trench walls unless they are sloped properly or shored competently. ️️Vibrations A trench is a narrow excavation made below the surface of the ground in which the depth is greater that the width and the width does not exceed___________ ️️15 feet The type of protection that may be specified under soft soil conditions in deep excavation (deeper than 20-feet) and in excavations near building foundations would be an ___________ ️️engineered vertical shoring systems (like slurry walls) If you are not certain of the structural quality of the soil you are about to excavate the soil type should you assume you are dealing with is_________ ️️Type C Soil _________ in excavations is created by supporting the walls of the excavation or trench to prevent their movement and collapse. ️️Shoring Trenches ______ deep or greater require that the protective system be designed by a _________ or be based on tabulated data prepared and/ or approved by a ___________ ️️20-feet registered professional engineer registered professional engineer _________ in the excavation is created by cutting the walls of the excavation or trench back to an angle. ️️Slopping The minimum slope for an excavation or trench with Type C soil is a ________ ️