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ie327f05mid

# ie327f05mid - [E 327 MIDTERM(FaUS NAME have neither given...

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Unformatted text preview: ' [E 327 - MIDTERM (FaUS) NAME- have neither given nor received aid on this exam- {signed and dated: There are 5 problems on 4 pages worth 100 points. The last 2 pages contains formulas, which you may tear off. Closed bookfnotes. Show work for partial credit. Clearly state any assumptions you make. Please place the final answer in the space provided. 1) (24 pts) Many ofthe techniques developed For manufacturing industries can also be used for service industries. Consider sanitation workers who collect garbage bags left at the curbside for 8 hours a day. In a typical 2—person team, one worker drives the truck, while the other walks the street, picking up the bags and dumping them into the truck (the lip of which is 50 inches from the ground). Typically the worker lines up with the bag (see picture), picks it up by the tied top, twists 90° to lift it above the lip and then drops it in. Assume one garbage bag per household (with a limit of 20 lbs to protect the workers), a distance of 7’0 feet between properties, and a walking speed of3 mph. mm a) (10) Find RW’L and L]? o O Q ' o a :' Win-1 _ L. be Winn 1 lWr— ~ mitt 16H - l m . - - -~ D _..’j'”‘“ _— "2 at. tit. . W i - it} bag _ J i x j Jim/3's Li bv' Ii 1' " “iii-it" h -w i Q“ 0mm : S i [Ctr-E?) ( I ~ .m—s £65) a M . in egg) 0 n “(at or.) _' RWL it}? 5'— NO oils? . ' Si (.523) t. :9 Ill, t‘SeXVlIZB (H75) H l i .h r: ... "1 A F .. ﬂ _ an: W?" 33W» '3 01%.? t: ﬁfty-2w: viv- h} (6) Describe/diagram the anatomical point ofeoricern or site ol'potcntia] injury for this type of analysis. .. .4 ‘ If” k_ I — - ' . . —« rm (“I bi I! / '33 : are: ._ . . .‘f L041) ’ H V ‘ . '2- 5 .5; K.__“ r- , _ _. . _ .. f . F ,1 ,rr;£‘___ ‘ ' ,. :1”:- "I. paQ‘i Stuart Home :‘wtvtéM (we Lt-QE-rlllé. owl—i- u, ma so in rams. some»: __ was 6425. +2 Extra Credit e What is the LSISJ compressive force For the worker? C) (7)1"low can you improve the job so as to make it acceptable with current standards, not decrease productivity, or increase the workforce? Show the resultant LI. .1 . LIL; bL; {Ix ‘ . I II‘ I 'n/L’l 5'?) C i Z I J« 1 i L 2.. '9 iii?) .ih-Utxit -' - r . . J.“ J” n") :9 01'“ r'. J) RIVA/tin" L'L’i'i’Qm—iﬂ) l?le rim "4'" " H Met t;- ttaa? he . , tel—tot: it: HHZV IQM 3‘ (skagltfll)t.t’~%l( or. a) 2 .36.“: raj a wiqu ti :: 520 -._~.,_/ ct or. 0% 2) (23 pts) a) (5) The following neise exposures were recorded for J. Smith at ABBA, lnc. over his 8-hr work day: 1.5 hours in the press area at 95 dBA I ,_I __u I, I Bhours in machining at 90 dBA : + Q}. ._ I: “in 4t 7.: (I. [e (D 0.5 hour lunch at 60 dBA 1 ' T; L] ‘6 (is 1 hour in indin r at 92 dbA , ., .~ ~ ’ gr 5 new so twill: -* 2 hours in assembly at 90 dBA ls this exposure acceptable according to OSHA? What is the dose exposure? b) (2-) As an IE, how would you measure/document this‘.J SDQQIUD Ila/{ad M Lo 0 3t Home l c) (3) What is the resultant time-weighted average noise for the S-hr day? .. I. w -. we 3 its: migrant) +9 0 w (1 J d} (4) What is the likely result if J. Smith is continually exposed to such noise levels? Be specific about the physiological changes in the car. i I I , _ ' _. Haunts toss Dar To DAM/tat (JP/794152 (i=2: 3 me cages/av (JF- ‘ ‘ (:(iIQf/‘I e) (4) How would you document this"? Be specific. U Sf git-brig, 0 anfi‘PI l .3 my :. [(153 (he ale/m? 82% mm tissue-c gm" em, l) {5) 'l'he press area has 5 identical machines. ABBA is considering either adding or I'cn‘lowng presses so as not to exceed the acceptable noise dose exposure lot .|. Smith. What is the resulting number of machines in the press area to accomplish this? 1 1-; as; E J to”; .m ode-tilde :1? 1n: "‘37 Legit”; .ttbc IX b ,IOIC a ____ ._ ..._ _ _..-- 2 S. I____.I.S:_.__.___.__I_I . ,v 3 (OJ-,3) {I g I; “I ﬂogI [S III IO ‘60 "i C? o 33 ~_~. (0&1? , 0 [it tol'lkl III) LLI/IIIﬂ—w III .‘ O y I. ﬁt, ﬁeld'- 1’ I _I If I .I‘ (i I Hi; M _ .II— —III-- __ _.. , —-— _ .._. _I_I_I_I__I __ I I II D I ‘ If: I 1 - l-f g! _.. (1‘3 *- ‘ t Cl + I; F ﬁll? ttt‘thgffot‘ tr“ machines M 3) (l0 pts) a} {4) You are installing lighting for the reading ofbooks and newspapersirt'flieil iving area o't‘a senior citizens” home. The rooms have a drab paint scheme (reﬂectance 25%). What is the recommended level of illumination? 0 st?" Catt; a we; t- 6 u a s {:39 l 2- IQFF :? 4 t A m:- a) -+ l , SPEED :5 O ﬂotsam-r t b) (3) Assume that you will use the typical tungsten light bulb (similar to a point source oi‘light). What should be intensity of the light source ifit will be placed 3 feet above the reading area? leaﬂet at: (90%;: 400 Illumination . 'L at l c) (3) How much of a reduction in the intensity can be obtained if the lamp is lowered 1 foot? .' . l,.-- c ,“t w, t , - (CL 2 “)0 pt 2 .. '{00 23‘]; -“ - b 5:6 /o 9’0 I'Educlmni_ ________________ .. ([6 c ) 4) (25 pts} The worker shown below is grinding clown the sharp metal edges resulting fmm punching out the metal frame for 1-1] printers. The printer weights '15 lbs, the grinder 5 lbs, and she moves both about to get into the various nooks and crannies of th housing. What are specific concerns that you see as an ergonomist and how would you correct these. Provide specific work design principles and! or use diagrams or pictures to show redesigns. Concernlproblem Solution a) "He'll—ERINMUWE’GK; leb'PtQI‘JU/NQ- U36“ @217 [Firms/c C) :Q S‘Pt—‘Ztiﬂr L 7r 0 7?! 120219??- * e '* '- " s . ﬁd-L/WL/n— titer“ b) FWLMNL"; ’9 H9 GQ/tvocz IDOL 7386/ t c) 5 He U men A”; Duo}? Cw L” OLA/{.472 Lit/0E (Z— .5 Mm“ Des-t (A) Bit-77573 Hﬂﬂ DZ (i... W t' FEM/it}? 6'4 {2:3 C [U 5R!)- #063 a) LMm S7“ ﬁLFi-Rl ‘O/U s N or A ﬂott.--t-n M2 r”? ‘ oH—i QE‘WWW MM [4962i W as . pee-now ' .- H H 5' /H/o663'?—- ‘ {{iQ é‘Q/h/Or-Xi 9mm 0M 6' 0]) 3M5»th to z) / For? "0 or W /‘5mm/D J‘z‘oo z. Marc: ﬁrms/o , 772 r J} a, 5) (18 pts.) Accuweather is considering hiring Bill as a new weather forecaster. However, they would like to compare his forecasting skill with their veteran Bob. The following results were obtained during the month of November: Bob correctly picked 10 out of 15 rainy days, and 13 out of 15 non-rainy days. Bill correctly picked 11 out of 15 rainy days, and ll out of 15 non-rainy days. a) (2) What is Bob‘s false alarm rate‘:J taﬂ LL {he 3,0? ,bg'} am; If/ c) (3) Which forecaster is more conservative? Why? {5058 HtTB) \l FR c) (5) Which forecaster is the most accurate? Why? Be specific with numbers; ) 80% mg “girlﬂﬁmrwues Bi‘Lt Wing ﬁ'ﬂﬁtﬁ‘x Bop}; if {mm d) (5) What is (13 for Bill? I a“ I p I I, II/E—e “ ﬁr”)? “5 oi - “3-H: 2-3 :1 LT“); mag-wail MRL are: it} HR: w emanate W3 +'l Extra Credit — What is the ofﬁcial name of our laboratory room? ...
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ie327f05mid - [E 327 MIDTERM(FaUS NAME have neither given...

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