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<br />c <br /> <br />Cross Construction Services, Inc. <br />@ 2011 DEMOLITION SAFETY PLAN <br />CROSS CONSTRUCTION SERVICES. INC. <br /> <br />10. This will suffice to break the unit and release the pre-stress; if not, a sand bag screen, <br />timbers, or a blast mat as a screen will be erected around the ends and demolition <br />commenced, taking care to clear the area of any personnel. The end blocks will be <br />heavily reinforced and difficult to break up. <br /> <br />19. MONOLITHIC STRUCTURES <br /> <br />1. The advice of the professional engineer experienced in pre-stressed work will be sought <br />before any attempt is made to expose the tendons or anchorages of structures in which <br />two or more members have been stressed together. <br /> <br />2. It will usually be necessary for temporary supports to be provided so the tendons and the <br />anchorage can be cautiously exposed. In these circumstances it is essential that <br />indiscriminate attempts to expose and de-stress the tendons and anchorages not be <br />made. <br /> <br />(: <br /> <br />3. In the case of progressively pre-stressed structures, it is essential to obtain the advice of a <br />professional engineer, and to demolish the structure in strict accordance with the <br />engineer's method of demolition. <br /> <br />4. The stored energy in this type of structure is large. In some cases, the inherent properties of <br />the stressed section will delay failure for some time, but the presence of these large <br />prestressing forces will cause sudden and complete collapse with little warning. <br /> <br />20. WORKING IN CONFINED SPACES <br /> <br />1. Cross Construction Services, Inc. often comes in contact with confined spaces when <br />demolishing structure at industrial sites. <br /> <br />2. These confined spaces can be generally categorized in two major groups: those with open <br />tops and a depth that restricts the natural movement of air, and enclosed spaces with <br />very limited openings for entry, <br /> <br />3. Examples of these spaces include storage tanks, vessels, degreasers, pits vaults, casing, <br />and si105. <br /> <br />4. The hazards encountered when entering and working in confined spaces are capable of <br />causing bodily injury, illness, and death. <br /> <br />5. Accidents occur among workers because of failure to recognize that a confined space is a <br />potential hazard. <br /> <br />18 <br />