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' � CHECIQJST FOR BUILDINGS WfTH MASONRY DCIFRIOR WAI 1 S <br /> ... � i�-_, . , � <br /> 20.5.8 LINTELS AND BEAMS SPANNING OPENINGS <br /> Lintei Acting Alone: '� <br /> , . Extend 4 inches past each side ot opening .................................... ✓ , <br /> Precast-1 story and top story of 2 story,Table 205P1 ............................ � <br /> i ' Precast—bottom story of 2 story w/wood tloor,Table 205P2 ........................ �c/.4 I <br /> Precast—bottom story ot 2 story w/hollowcore floor,Table 205P3 .................... ,U,0 <br /> Corttinuous Bond Beam Acting as Lintel: <br />� 1 story and top story of 2 story,Table 205Ri .. ................................ ,(/,0 , <br /> I' Bottom story of 2 story w/wood iloor,Table 205R2 .............................. .(/A <br />�� , Bottom story ot 2 story w/hollowcore floor,Table 205R3 ............... ........... � , , <br /> Bond Beam Combined with LiMel:� � . • <br /> 1 story and:top'story of 2 story,Table 20557 .................................... __� . ' <br />: Bottom story of 2 atory w/wood iloor,Table 205S2 ............................... <br /> Bottom story of 2 story w/hollowcore floor,Table 20553 .......................... Li /Q _ ' <br /> 206 CEIUNG SYSTEMS <br /> 206.1 Ceiting Diaphragms(req'd when endwall stops at ceiling) <br /> 206.3 Gypsum ceiling dlaphragm at sidewall, Fig.20C� ......................... ...... �_ <br /> Gypsum ceiling diaphragm at endwall, Fig.2066,206C ................. ......... ,t/,n <br /> Ptywood ceiling diaphragm,Table 206D, Fig.206E ...... ..... ....... .......... .. ;;.�_ <br />, Piywood ceiling diaphragm at endwall, Fig.206F ................ . . ........... .. �_ <br /> Plywood ceiling diaphragm at sidewall, Fig.206G ......... ... .... .... ... ........ �lR <br /> 206.4 � Ceiling diaphragm akemates (Tables 206H,J, fQ . . ..... ... .. ....... . . ..... . .. �/ <br /> ' 207 ROOF SYSTEMS - <br />'i 207.1 RAFfER.IOIST FRAMING SYSTEMS <br /> Rafters:Group II sized per NFPA span tables (24 in o.c.max.) ........ . ... ... .. . .. . . �/A <br /> Ridge Board:ac min.cut depth of rafter .. ............ . .. .. ... . . ..... ....... . . /l.11 <br /> Collar Beam: 1x6 every third rafter pair ............ .............. ........ ..... ,G',� <br /> 2072 TRUSS FRAMING SYSTEMS <br /> Trussdesign perTPl spec . ... .. .. .. ................ ...... . . ... . ..... ... . . �i <br /> Designs to indicate wind speed, height and uplift ......... ... . . . .. .. ... . .... . . .. v <br /> . ' Maximum truss spacing at 24 inches... ..... . ................ . .. .. . . ...... . . . ✓ <br /> Girder trusses designed as drag struts ... .. . . .. ...... . . . . . ... . . . . . .. . ........ ✓ <br /> , Group II lumber tor top chords . . .... .. . . ... . . ..... ..... . . . . . . . . . . . . ..... .. . V <br /> . Step-down hip system used tor hip roof(Fig.207FQ ........ ....... . . .. ... .. . ... .. � <br /> 207.3 � ROOF SHEATHING <br /> 15/32 Exposure 1 GD plywood or 1/2-inch particleboard min. ... .. . . . . . . . . ... . . .. . . c� <br /> Typical tasteners:8d common or galv. box at 6 inches throughout . . . . . . . .. ... .... . . ✓ <br /> - 8d ring shank in roof zone 3 and 110 mph,and wfth Group III lumber in 100 mph zone . . . _ /�R <br /> 4in nail spacing at gable endwall/gable truss . .. ... ... .. . . . . .. .. . .. . .. ...... . . . ,(/A� <br /> 12-in intermediate spacing in roof zone 1 and 90�mph........ ..... . ... ... . .... . . . -r/LI <br /> 12-in intermediate spacing using Group II lumber in 100 mph zone . . . . .. . . . ... . .... . .(/4 <br /> After•as required for stronger diaphragm per 207.5 .......... . .. . . . ... . . . ....... . �JA <br /> 207.4 BRACING <br /> '� Add blocking at 4 ft o.c. 1 st 2 traming spaces'rf no ceiling diaphragms . . . . .. . . . . .... . �_ <br /> 207.5 I ROOF DIAPHRAGM <br /> _ � Calculate sidewall diaphragm capacity: - <br /> . ; A = Table 207C capacity B = Ceiling ht.factor <br /> ,, C = W/L D = root slope tactor <br /> � Adjusted capacity =AxBxCXD . . . . . . . . .. . . . . . . ..... . . . . . . . . . . . . . . . . ..... .. . I O � <br /> � B adj. cap. > 180.upgrade roof sheathing per S8C .. . . . . . ... . .. . . . . . . . . . . . .. . . . /f•/J <br />�I � H adj.cap. < 180,difterent sheathing ok at nail pattem in 207.3 . ... . . . . . . .. . . . . . . . i.;� <br /> � Calculate endwall and i�terior shearvvall diaphragm capacity: <br /> �, A =Table 207D capacity B = clg. ht/8 <br /> �° C = 0.82 tor 1 story bldg.only <br /> ' Adjusted capacity =Ax8 (xC tor 1 st. only) . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . � <br /> It adj.cap. > 240,upgrade roof sheathing per SBC . . . ... . . . . . . . . . . .. . . .. .. . . . . . .U.9 <br /> K adj.cap. < 240,dif(erent sheathing ok at nail pattern in 207.3 . .. . . . . . . . . .... . . . . . tiA <br /> g HRRC CHECKLIST::9/93 <br />