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STEP 1 - DEFINE DESIGN PARAMETERS STEP 11 - (CONTINUED) <br />A CONTACT LOCAL JURISDICTION FORALL PNWAETERS <br />8. DEFINE GOVERNING DESIGN CODE- SaECTONE <br />1. CAUFORNIA BULDING CODE (CBC) <br />1 INTERNATIONAL BUILDING CODE OBC) <br />1 INTERNATIONAL RES,DemAL CODE ORC) <br />4. FLORIDA BUILDING CODE (FBC) <br />CBC Wind Loads <br />DI,coon d Ballcwilld Speed(1) ..9E*pour' Core,/4 Lold 70 00 90 100 110 120 <br />B, Cor D Rail Sy'lm <br />Upward (2) 10 13 15 19 23 27 <br />0--d000000 <br />IBC, IRC and ASCE 7-05 WIND LOADS <br />130 <br />32 <br />0 1 0.11. 8/ 01 OTHER <br />C. DEFINE BASIC WIND SPEED (MPH) - SELECT ONE E CO"J0,4 <br />GOVERNING <br />JURISDICTION BASIC WIND SPEED (MPH)8 Roof Sys:em <br />IBC. IRC & <br />85 90 100 110 120 130 140 150 C Rod Sylt,rn <br />FBC <br />Cac 70 75 80 90 100 110 120 130 D Rod System <br />D.coon d Balic Whd Speed (MPH)(3) <br />1-d 85 90 100 110 120 1 <br />Upward 17 19 23 25 29 <br />Down'..rd 0 10' 12 13 15 <br />Up-d 2023283035 <br />00.7-8 10 12 14 15 18 <br />Up-d 24 27 34 38 43 <br />Do-m=d 13 14 17 10 22 <br />1. 1BC, IRC & FBC WIND SPEEDS ARE FOR 3-SEC GUST SPEED <br />2. CBC WIND SPEEDS ARE FOR FASTEST MILE SPEED <br />D. DEFINE 'BASIC DESIGN ROOF LOAD <br />1. ROOF LIVELOAD- SELECT ONE <br />a. 10 PSF <br />b. 20 PSF <br />2. ROOF SNOW LOAD - SELECT ONE <br />a. 0 PSF <br />b. 10 PSF <br />c 20 PSF <br />d. 30 PSF <br />e. 40 PSF <br />f 50 PSF <br />34 40 48 <br />18 21 <br />42 48 55 <br />21 25 29 <br />51 59 U <br />26 30 35 <br />C <br />Rg <br />(1) FASTEST MILE WlND SPEED 4 <br />(2) UPUFT PRESSURES MAY BE REDUCED BY 25 PERCENT FOR ENCLOSURES <br />LESS THAN OR EQUAL TO 10 FEET <br />(3) 3-SECOND GUST SPEED <br />F. DETERMINE APPUED DOWNWARD ROOF LOAD: <br />1. LOCATE APPROPRIATE TABLE FOR ROOF DEAD LOAD (DL k <br />USE DL = 2 PSF FOR COVERS WT,HOUT ROOANG.Imile,gli'§0 <br />USE DL = 12 PSF FOR COVERS WITH UP TO 10 PSF ROOFING <br />2. LOCATE APPROPRIATE ROW FOR APPLIED WIND PRESSURE <br />3. LOCATE APPROPRIATE COLUMN FOR APPLIED ROOF LOAD. <br />4. ™E NUMBER AT THE INTERSECTION OF THE APPROPIRATE ROWAND CLOUMN <br />IS ™E 'APPUED DOWNWARD ROOF PRESSURr.0· -21=11- <br />5. REPEAT FOR BOTH LIVE & SNOW LOADS. THE MAA APPLIED ROOF LOAD \»m:§FOR BOrH CASES 18 THE - APPL IED ROOF LOAD- USED IN DESIGN.%4.=&*0 <br />EXAMPLE <br />GIVEN:ti--.I.g. 55 PSF <br />E. DEFINE EXPOSURE CATEGORY - SELECT ONE <br />1. EXPOSURE B <br />2. EXPOSURE C <br />3. EXPOSURE D <br />NOTE: NOT REQUIRED FOR CBC JURISDICTION <br />STEP 11 - DETERMINE "APPLIED" LOADS <br />A SELECT APPROPRIATE TABLE BASED ON GOVERNING CODE. USE ASCE 7-02 FOR FBC. <br />8. LOCATE APPROPRtATE COLUMN FOR BASIC WIND SPEED. <br />C. LOCATE APPROPRIATE SECTION FOR WIND EXPOSURE. COMPONENT AND DIRECTION <br />OF APPLIED LOAD. <br />D. THE NUMBER AT THE INTERSECTION OF THE APPROPRIATE ROWS AND CLOUMN ARE THE <br />DESIGN UPWARD & DOWNWARD WIND LOADS. <br />E. ENTER DESIGN PRESSURE BELOW <br />1. ROOF LIVE LOAD (LL) <br />2. ROOF SNOW LOAD (SL) <br />3. ROOF WIND LOAD - UPWARD MUe) <br />4. ROOF WIND LOAD - DOWNWARD (Wldown) <br />U=10 PSF <br />SL = 20 PSF <br />Wldown = 10 PSF (IBC, 90 MPH EXP B) <br />SOLUTION:.j <br />THE PPLIED DOWNWARD ROOF LOAW 0 22 PSF. <br />APPLIED DOWNWARD ROOF LOADS <br />Appoid Mthd Applied Roof Loidi (Mmdnun of U- and Snow L oadi) - (p,4 <br />Pres:um U. Loado 8,10,40 Loid, <br />10 15 20 25 30 35 40 48 50 <br />012172227323742 47 52 mi101517n343944495459 <br />u n2222374247525762 * <br />20 28 28 28 41 45 50 58 60 65 <br />2535353547509586368 <br />30414141545659626772 A <br />35484848 60 63 6S 68 70 A i405454546769 n 7*n 7983 <br />45 81 61 61 73 78.78 81 83 88 88 - A P50 87 67 67 80 82 85 87 90 92 96 <br />55 74 74 74 88 89 , 91 94 96 96 101 o <br />60 80. 80 80 93 95. 98 100 103 105 108 -21 i1. As..„I Roof[)ead Loado¢201 <br />APPLIEd DOWNWARD ROOF LOAD <br />Appled Rod Load: (Mmanunn of Llve end Sr- Loadi) - (pef)A Uve Load•Snow Le*ds <br />10 15 20 25 30 35 40 45 50 55 <br />8,03/imm <br />ViI <br />lw, <br />lati <br />, 3/31/ f_-- * <br />CIVIL 'SU'f CALWOE» <br />P@EEA <br />0222732374247525762671025032«495459646974 | <br />--'-0 <br />Ed :18 qug:04.0,/0 <br />4057608368n <br />OATE51 64 66 69 72 77 W""01, <br />587on757880 <br />Nn79825487 <br />718386 88 91 93 <br />77 90 92 95 97 100 <br />84 96 99 101 104 106 ..0 <br />90 103 106 108 110 113 115 11/ <br />- Roof Deid Load of 12 pl LRP-3 <br />.... 5 0. 22 <br />1 <br />. <br />... <br />j