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The chart is not allowed to be used on the ACI exam.","Answer",{"name":66,"@type":61,"acceptedAnswer":67},"How is reported density (unit weight) of concrete calculated in the problems?",{"text":68,"@type":64},"The method uses the measure volume and the net mass of concrete to compute density in lb/ft³, based on the given formulas and the masses of empty and full measures.",{"name":70,"@type":61,"acceptedAnswer":71},"How do you calculate air content using the pressure meter and volumeter approaches?",{"text":72,"@type":64},"For the pressure meter, measured air content is adjusted using an aggregate correction factor. For the volumeter, initial and final readings, pints of alcohol used, alcohol content correction, and calibrated cups of water added are used to determine reported air content.","https://schema.org",{"og:url":32,"og:type":75,"og:title":10,"og:site_name":45,"og:description":12},"article",{"robots":77,"canonical":32},"index,follow",{"doc_id":79,"site_id":7},451518,1791125168,{"code":4,"msg":82,"data":83},"success",[84,88,92,95,100,105,109,114,119,122,126],{"id":22,"doc_module":4,"doc_module_name":25,"category_name":85,"show_sort_weight":86,"slug":87},"Story & Novel",90,"story-novel",{"id":26,"doc_module":4,"doc_module_name":25,"category_name":89,"show_sort_weight":90,"slug":91},"Literature",80,"literature",{"id":33,"doc_module":4,"doc_module_name":25,"category_name":29,"show_sort_weight":93,"slug":94},70,"exam",{"id":96,"doc_module":4,"doc_module_name":25,"category_name":97,"show_sort_weight":98,"slug":99},5,"Comic",60,"comic",{"id":101,"doc_module":4,"doc_module_name":25,"category_name":102,"show_sort_weight":103,"slug":104},6,"Technology",50,"technology",{"id":55,"doc_module":4,"doc_module_name":25,"category_name":106,"show_sort_weight":107,"slug":108},"Healthcare",40,"healthcare",{"id":110,"doc_module":4,"doc_module_name":25,"category_name":111,"show_sort_weight":112,"slug":113},8,"Research & Report",30,"research-report",{"id":115,"doc_module":4,"doc_module_name":25,"category_name":116,"show_sort_weight":117,"slug":118},9,"Religion & Spirituality",20,"religion-spirituality",{"id":117,"doc_module":4,"doc_module_name":25,"category_name":120,"show_sort_weight":117,"slug":121},"World Cup","world-cup",{"id":123,"doc_module":4,"doc_module_name":25,"category_name":124,"show_sort_weight":123,"slug":125},10,"Lifestyle","lifestyle",{"id":127,"doc_module":4,"doc_module_name":25,"category_name":128,"show_sort_weight":96,"slug":129},19,"General","general",{"code":4,"msg":82,"data":131},{"doc_id":79,"user_id":132,"nickname":42,"user_avatar":133,"doc_module":4,"category_id":33,"category_name":29,"doc_title":10,"doc_description":12,"doc_content":134,"file_id":135,"file_url":136,"file_type":137,"file_size":138,"view_count":55,"is_deleted":4,"is_public":22,"is_downloadable":22,"audit_status":22,"page_count":101,"language":139,"language_code":8,"site_id":7,"html_lang":8,"table_of_contents":140,"faqs":141,"seo_title":142,"seo_description":12,"update_tm":143,"read_time":144,"preview_page_count":4},1099529839202,"https://ap-avatar.wpscdn.com/davatar_a8503ba1806abce46bf441b54a3ca4cd","Concrete Field Testing Technician  \nOnline Homework  \nThe homework questions in this packet are similar to the ones found on the actual written exam. The attached formula sheet with an alcohol correction chart is provided to help you learn the calculations but is not allowed to be used on the ACI exam. Answers to the problems are given on the last page of the packetso that you may check your work.  \n1. Calculate the reported density of the concrete in lb/ft³.  \nKnown: Volume of Measure 0.250 ft³  \nMass of Empty Measure 7.45 lb  \nMass of the Measure + Concrete 45.58 lb  \n2. The total mass of all materials in a batch is 34,855 lb. If the density of the concrete is 146.6 lb/ft³, determine the yield for the batch in yd³.  \n3. For a yield of 9.8 yd³ and a design yield of 10.0 yd³, calculate the relative yield of the concrete.  \n4. If a batch of concrete used 6,000 lb of cement and produced a yield of 9.6 yd³, what is the cement content ofthe mix in lb/yd³?  \n5. A theoretical density for a concrete mixture is 150.7 lb/ft³. If the density of the concrete being produced at the jobsite is 142.5 lb/ft³, calculate the air content (%) of the concrete.  \nConcrete Field Testing Technician  \nOnline Homework  \n6. Calculate the reported density of the concrete.  \nMass of empty measure  7.80  lb  \nMass of full measure  45.64  lb  \nNet mass of concrete   lb  \nReported volume of measure  0.251  ft³ Reported density (unit weight)   lb/ft³  \n7. Calculate the reported air content (pressure meter) of the concrete.  \nMeasured air content  8.0  %  \nAggregate correction factor  0.4  % Reported air content   %  \n8. Calculate the reported air content (volumeter) of the concrete.  \nInitial meter reading  6.50   \nFinal meter reading  6.75   \nPints of alcohol used  2   \nAlcohol content correction    \nCalibrated cups of water added  0   \nReported air content    \n9. Calculate the reported density of the concrete in lb/ft³.  \nKnown: Volume of Measure 0.249 ft³  \nMass of Empty Measure 7.60 lb  \nMass of the Measure + Concrete 44.85 lb  \nConcrete Field Testing Technician  \nOnline Homework  \n10.The total mass of all materials in a batch is 38,600 lb. If the density of the concrete is 148.5 lb/ft³, determine the yield for the batch in yd³.  \n11. For a yield of 9.3 yd³ and a design yield of 9.0 yd³, calculate the relative yield of the concrete.  \n12.If a batch of concrete used 5,500 lb of cement and produced a yield of 9.3 yd³, what is the cement content ofthe mix in lb/yd³?  \n13.A theoretical density for a concrete mixture is 151.2 lb/ft³. If the density of the concrete being produced at the jobsite is 141.7 lb/ft³, calculate the air content (%) of the concrete.  \n14. Calculate the reported density of the concrete.  \nMass of empty measure  11.56  lb  \nMass of full measure  49.22  lb  \nNet mass of concrete   lb  \nReported volume of measure  0.248  ft³  \nReported density (unit weight)   lb/ft³  \n Concrete Field Testing Technician Online Homework  \n15. Calculate the reported air content (pressure meter) of the concrete.  \nMeasured air content  7.5  %  \nAggregate correction factor  0.3  %  \nReported air content   %  \n16. Calculate the reported air content (volumeter) of the concrete.  \nInitial meter reading  7.25   \nFinal meter reading  7.50   \nPints of alcohol used  3   \nAlcohol content correction    \nCalibrated cups of water added  0   \nReported air content    \n17. Calculate the reported air content (volumeter) of the concrete.  \nInitial meter reading  8.00   \nFinal meter reading  8.25   \nPints of alcohol used  4   \nAlcohol content correction    \nCalibrated cups of water added  2   \nReported air content    \n Concrete Field Testing Technician Online Homework Density (D) D = (Mc – Mm) / Vm = Wc / Vm  \nD = density (unit weight) of concrete (lb/ft3)  \nMc = mass of the measure filled with concrete (lb)  \nMm = mass of the empty measure (lb)  \nVm = volume of the measure (ft3)  \nWc = weight of the concrete  \nYield (Y) Y(yd3) = M / (D x 27)  \nY = volume of concrete produced pe","cbCaikZH7AIpcNLK","https://ap.wps.com/l/cbCaikZH7AIpcNLK","pdf",1125348,"English","# Online Homework\n## Density (Reported Unit Weight)\n## Yield and Relative Yield\n## Cement Content\n## Air Content Calculations\n## Isopropyl Alcohol Correction Table\n## Answers","[{\"question\":\"What tools or references are allowed for the practice homework?\",\"answer\":\"The packet provides a formula sheet and an attached alcohol correction chart to support learning calculations. The chart is not allowed to be used on the ACI exam.\"},{\"question\":\"How is reported density (unit weight) of concrete calculated in the problems?\",\"answer\":\"The method uses the measure volume and the net mass of concrete to compute density in lb/ft³, based on the given formulas and the masses of empty and full measures.\"},{\"question\":\"How do you calculate air content using the pressure meter and volumeter approaches?\",\"answer\":\"For the pressure meter, measured air content is adjusted using an aggregate correction factor. For the volumeter, initial and final readings, pints of alcohol used, alcohol content correction, and calibrated cups of water added are used to determine reported air content.\"}]","Concrete Field Testing Technician - Online Homework | PDF",1790735320,15]