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JRR Engineering, Inc. <br />18609 76th Ave. W., Suite B �L'&Gl - C'O <br />� Lynnwood, WA 98Q37-4149 <br />� <br />�a25� sy�-sioa � �, I�. ls� �,a5z c„��r � <br />Cfent: SCHEN, L.LC. PfOjeCt Locat1011: �Varies, Plan 1256 Dupiex-No Garac <br />JGary Merrifl'i �� �esign calculations are for 85 mph wind exposure �- <br />� �P.O. Box 364 --�-- and 25 psf snow load. Do not use or depend upon these� <br />�MRNSVIIIP UJA 98270 � I these calculaBons for more severe wind exposure or snow h <br />ode: ASCE 7-05 / IDC 2006 � I� I _f <br />Lat. Des. Parameters: Site Class. D, (SS): 1.25 �ead Loads: Roof & Ceiling load 15 psf <br />�Exposure:j � B Floor load 10 psf � <br />Windspeed (mph): 85 Exterior wall load 8 psf (surface area)_, <br />ILive Loads: Snow Load (ps�: 2� Interior wall load 10 ps! (Floor area) _ <br />Floor Load (ps�: 40 <br />I Lim. Attic Sta. (ps�: 20 <br />Assumed Soil Values per 2006 IBC: Soil Bearing: 2000 psf (Contractor shall notify Engineer if _ <br />� _ testing indicatEs bearing capacil iy s lower than 2000 ps� <br />lind Design: �Ps=Kzt').'Iw P.,o (Simpiified Wind Load ��e:thod, Sec. 6.4, Eq. 6-1) <br />Where; �. , Adjustment Factor varies over height 8 exposure (Fig. 6-2) _ <br />Iw = 1 r(Table 6-1) <br />I _ P63o, Varies with roof pitch and building zone (Figure &-2) <br />I I Kzt = 1 Topog. Factor (6.5.7, Fig. 6�), equal to 1.0 for flat terrain <br />A B C D A � B I c I u <br />Ps30 14.4 2.3 ' i 0.4 � 2.4 Ps30 11.5 � -5 9 � i.8 -3.5 <br />0-15' Ps 1�.4 2.3 j '.0.4 j 2.d 0-15' Ps 11.5 5.9 7.6 -3.5 <br />15'-20' Ps 14.4 2.3 10.4 2.4 15'-20' Ps 11.5 -5.9 _� 7.6 I -�.5 <br />20'-25' Ps 14.4 2.3 � 10.4 2.4 20'-25' Ps 11.5 ��5.9 i 7.6 3.5 <br />25'-30' Ps 14.4 2.3 10.4 � 2.4 25'-30' P� 11.5 j Q � 7.6 3.5 <br />0o nse in 1': ` 6 I" � __ ao nse in 1': 0 �" I <br />Horizontal Pressures Horizontal Pressures <br />A B C D A B C D <br />Ps30 14.4 � 2 3 10.4 � 2.4 Ps30 1 i.5 I _5.9 7.6 � -3.5 <br />0-15' P� 14.4 2.3 10.4 �_ 2.4 0-15' Ps I 11.5 -5.9 7.6 � -3.5 <br />15'-20' Ps 14.4 2.3 10.4 I 2.4 15'-20' Ps 11.5 -5.9 7.6 i -3.5 <br />ZO'-25' Ps 14.4 2.3 I 10.4 � 2.4 20'-25' Ps 11.5 � -5.9 � 7.6 'I -3.5 <br />ZS'-30' Ps 14 4� 2 3 10.4 I 2.4 25'-30' Ps 11.5� -5.9 � 7.6 � -3.5 <br />� - , �_ - <br />Seismic Design: V= Cs'Vt� !(Erdiv. l.at. Force Des_per ASCt 7-05, Sec 12.8) _ <br />F� i (Table 11.4-1) _�Sos = Des. Spectral Resp. Accel. Param. (Sec. ' �K. � <br />Sos' 0.833 (Eq. i L4-3; �, D= Si;e Classification (Section 11.4.2) p�wo _, fty <br />_ IE = 1 �Table 11.5-1) �Fa & Fv = Siie Co��. (?2bla 11.4-1 &11.4-2 Q P 1- <br />R=j 6.5 I(Table12.2-1) V=SeismicBaseShesr(Eq.t2,8-I)___ � <br />Cs IE`SoslR (Eq. '12.is-2) �W = EHechve Seismic Weight (Sec. 127.Z; �, <br />--�----- � <br />� = Redundancy Factor (1.0<p<•1.3) (Sec. 12.3.42) _� I _ ,pv Z 'ta9 _g4 k <br />-�- � I I Thereiore; I V= I 0.128 W � <br />Prepared by: JCM oN��.�� � � <br />Chi�cked by: RKR Project N2me: Plan 1256 Duplex Ne Ga:eyO �</' <br />/ EXPIRES �6 L;j�'2�; <br />Project No.: 07-68F 12/19/2007 Page 1 pt � <br />