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- Er.perience Las shown [hat the following credi[s should normally <br /> bc applied for [iie occupancies listed: <br /> aaellings*, apartments, and dormi[ories -25% <br /> • Hospitals -Z�� <br /> Elementary school� -20X <br /> Junior and Senior high schools -15X � <br /> Open parking garages -25X � <br /> *vhen applying the standard method. � ' <br /> For other occupancies, good �udgment should be used, and the � <br /> percentage increase or decrease will not necessarily be the same for I <br /> alZ buildings that are in the same general category - for example , <br /> "Colleges and Universities": this could range from a 25Z decrease � <br /> for buildings used only as dormitories to an increase for a chemical � <br /> laboratory. Even when considering high schools, the decrease should <br /> be less if they have extensive shops. <br /> It is expec[ed that in co�nercial buildings no percentage increase <br /> or decrease for occupancy will be epplied :n most of the fire flow de- <br /> tex�inations. In general, percentage increase or decrease wi21 not be <br /> , a[ the limits of + 25%. <br /> EXPOSURES <br /> When de[ermining exposures it is necessary to understand that <br /> the exposure percentage increase for a fire in a building (x) ex- <br /> posing ano[her building (y) does nat necessarily equal the percentage <br /> increase vhen the fire is in building (y) exposing building (x) . The <br /> Guide gives the maximum possible percentage for exposure at specified <br /> distances. Nowever, these maximum percentages should not be used for <br /> all exposures at those distances. In each case the percentage applied <br /> should reflect the actual conditions but should not exceed the per- <br /> centage listed. <br /> The maximum percen[age for the separations listed generally <br /> should be used if the exposed building mee[s all of the following <br /> conditions: <br /> a. Same type or a poorer type of construction than the <br /> fire buildi::g. <br /> b. Same or �reater height than the fire building. I <br /> c. Con[ains unprotected exposed openings. <br /> d. Unsprinklered. � <br /> C , -7- <br />