ŠĻą”±į>ž’ lnž’’’k’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’ģ„Į'` šæ$bjbj{P{P 1&::!’’’’’’¤šššš@@@T˜˜˜˜ ¤Tµw2ĢĢĢĢĢ«««4w6w6w6w6w6w6w$ēxhO{€Zw@«§«««ZwššĢĢŪow„„„«š8Ģ@Ģ4w„«4w„„bālŹ(@ųvĢĄ :ŪvÆŹ˜Ē¬pV4w…w0µwqöĻ{ć¦Ļ{¬ųvĻ{@ųv<««„«««««ZwZw‰«««µw««««TTTD ˜TTT˜TTTšššššš’’’’ Tech 045 Safety & Allowances Tips What is an "ergonomic injury"? Input from the recent ergonomics forums demonstrated to OSHA that there are a wide variety of opinions on how the Agency should define an ergonomic injury and that the definition adopted by OSHA depends on the context. Ergonomic injuries are often described by the term "musculoskeletal disorders" or "MSDs." This is the term of art in scientific literature that refers collectively to a group of injuries and illnesses that affect the musculoskeletal system; there is no single diagnosis for MSDs. As OSHA develops guidance material for specific industries, the agency may narrow the definition as appropriate to address the specific workplace hazards covered. OSHA will work closely with stakeholders to develop definitions for MSDs as part of its overall effort to develop guidance materials. Specific Allowances for Tech 045 Projects The following facilities layout safety-related allowances are not all-inclusive, but are provided to help you in your layout assignments in Tech 045. Refer to your books, other appropriate materials, or consult the instructor for any allowances not included here. Work height = elbow height +/- 2 inches Operator space = 3 feet X 3 feet (or 3 feet X width of workstation) Operator space should be 3 feet off the aisle for safety Having 3 feet from side to side of operator allows parts to be placed comfortably next to the operator If two people are working back to back then allow 5 feet between stations Workstation square footage = length X width of workstation Allowance for aisles, work in process etc. = workstation space X 150% Width of aisles running into trailers = 8 feet A semi trailer = 8 feet X 40 feet Small offices for clerks = 100 square feet per person Access for machine maintenance = 2 feet around the machine Parking for small cars = 8 feet X 15 feet per car Parking for medium car = 9 feet X 17.5 feet per car Parking for large cars = 10 feet X 20 feet per car Single lane driveways = 11 feet wide Double lane drive ways = 22 feet wide A parking lot = 250 square feet per number of parking spaces needed Personnel and security offices = 200 square feet per office About one personnel person per 100 employees About 1 security person per 300 employees Locker rooms = 4 square feet per employee Allow one toilet for every 20 employees One toilet = 15 square feet One washbasin = 15 square feet Entryway for toilet = 15 square feet One urinal = 9 square feet The number of washbasins = number of toilets Restroom should not be farther than 200 feet from employees Lunchrooms = 10 square feet per person Drinking fountains should not be farther than 200 feet from employees Each drinking fountain = 3 feet X 5 feet, or 15 square feet One way aisle for fork trucks = 4 feet wide Two-way aisle for fork trucks = 10 or (4+4+2) feet First aid rooms = 6 feet X 6 feet per room 500 employees justifies one nurse One nurse would require a 400-square foot area for patients’ needs Lounges are 25 square feet per driver or user Locker rooms should be = 4 square feet per employee Warehouse size = size of product X quantity manufactured daily X number of days’ supply Tool room or maintenance room = sum of all equipment in it X 200% Office space needs = number of office personnel X 20 square feet Office space for general managers & senior executives = 200 –300 square feet Office space for managers = 150 – 250 square feet Office space for supervisors = 100 – 200 square feet Office space for accountants = 75 – 150 square feet Office space for engineers 100 – 150 square feet Office space for clerks = 75 – 100 square feet Overall office space determination = 200 square feet X number of personnel For desks in one row, there should be 6 feet from the front of one desk to the front of the one behind it For desks in two or more where ingress and egress are confined to one side, 7 feet should be allowed from the front of one desk to the front of the desk behind it If employees are back to back, allow a minimum of 4 feet between chairs Inside aisles within desk areas should be from 3 to 5 feet wide Intermediate aisles = 4 feet wide Main aisles = 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