twenty four masonry construction: beams & columns Office Hours Masonry Beam & Wall Design Masonry Design Masonry Standards Joint Committee

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1 ARCHITECTURAL STRUCTURES: FOR, BEHAVIOR, AND DESIGN DR. ANNE NICHOLS SUER 013 lecure weny our Oice Hour link o poed chedule onry conrucion: e & colun onry Conrucion 1 Lecure 4 Archiecurl Srucure F009n onry Conrucion F009n onry Deign onry Sndrd Join Coiee ACI, ASCE, TS ASD (+epiricl) liner-elic ree LRFD dded in 00 reerenced y IBC unreinorced llow enion in lexure reinorced - ll enion in eel wll re lo in copreion onry Conrucion Inernionl onry Iniue (Brin Trile) onry Be & Wll Deign reinorceen incree cpciy & duciliy onry Conrucion 3 1

2 onry Deign i no he yield re i he re in he onry STRAIN STRESS onry eril uni one, rick, concree lock, cly ile d grou uni n.. /n T = C = ()/ BIA Teknoe 17 erie onry Conrucion 4 d onry Conrucion 5 Nionl Concree onry Aociion onry eril orr wer, onry ceen, nd, lie ype: A S O N W O R K higher rengh 500 pi (ve.) ediu high rengh 1800 pi ediu rengh 750 pi ediu low rengh 350 pi low rengh 75 pi Nionl Concree onry Aociion onry eril rer grou ill void nd ixe rer pri ued o e rengh, ire rein Ryn-Brigg Aocie Nionl Concree onry Aociion onry Conrucion 6 onry Conrucion 7

3 onry eril oiure reince wehering index or rick ond nd deiling expnion or hrinking ro wer provide conrol join prpe, corner, long wll prpe wih no conrol join Allowle onry Sree enion - unreinorced only onry Conrucion 8 onry Conrucion 9 onry Wll enion norl o ed join enion prllel o ed join No llowed in SJC code WALLS Allowle onry Sree lexure F = 1/3 (unreinorced) F = 0.45 (reinorced) her, unreinorced onry F v = pi her, reinorced onry /Vd 0.5: F v = 3. 0 /Vd 1.0: F v =. 0 onry Conrucion 10 rong uni wek uni onry Conrucion 11 Archiecurl Srucure 3

4 Allowle Reinorceen Sre enion ) Grde 40 or 50 F = 0 ki ) Grde 60 F = 3 ki c) Wire join F = 30 ki *no llowed incree y 1/3 or coinion wih wind & erhquke did eore 011 SJC code Reinorceen, d grou uni n.. ou C : F=0: T = C = ()/ SJC: F = 0 ki, 3 ki or 30 ki y ype A ρd i =F (llowle) he oen cpciy i liied y he eel A j onry Conrucion 1 onry Conrucion 14 Lecure 3 Archiecurl Srucure III ARCH 631 F010n Reinorceen, d grou uni ou T : n.. F=0: A T = C = ()/ 0.5 d jk onry Linel diriued lod ringulr or rpezoidl i =F (llowle) he oen cpciy i liied y he eel SJC F =0.33 onry Conrucion 15 Lecure 3 Archiecurl Srucure III ARCH 631 F010n onry Conrucion 14 4

5 Sregy or R Flexurl Deign o ize ecion nd ind reinorceen ind knowing nd y ize ecion or oe < ge k, j d jf ge & d in nice uni ize reinorceen (r ize & #): A need o e ized or her lo check deign: A F F 0. 5d jk F Ulie Srengh Deign LRFD like reinorced concree ueul when e her i high iproved inelic odel ex. erhquke lod 1 c c T C onry Conrucion 15 onry Conrucion 16 onry Colun nd iler u e reinorced onry Colun nd iler conidered colun when /<3 nd h/>4 i widh o wll i hickne o wll lender i 8 one ide h/ 5 need ie eccenriciy y e required onry Conrucion 17 onry Conrucion 18 5

6 onry Colun llowle xil lod h 0. 5 An 0. 65AF 1 h/r r 70r 0 5. An 0. 65AF h h/r > 99 onry Wll (unreinorced) llowle xil ree h 70r F F r h h/r 99 h/r > 99 h = eecive lengh r = rdiu o gyrion A n = eecive re o onry = eecive re o colun reinorceen F = llowle copreive re in colun reinorceen onry Conrucion 1 Lecure 4 F011n onry Conrucion 0 Deign onry colun nd wll F onry Conrucion 1 h/r < 99 h/r > 99 F 1.0 nd h F r 70r F 0 5. h F (unreinorced) F Deign onry colun nd wll - loding wind loding eccenric xil lod virul eccenriciy, e 1 h onry Conrucion e o V w e 1 e o V w e 1 e w virul eccenriciy 6

7 Deign onry colun nd wll wih rer wll reinorceen uully cener nd ineecive in copreion F provided F d grou uni n.. BENDING STRESS AXIAL STRESS C = ()/ = /A /n T = or equiliriu: F C T Deign Sep Knowing Lod 1. ue liiing re uckling, xil re, coined re. olve or r, A or S 3. pick ril ecion 4. nlyze ree 5. ecion ok? 6. op when ecion i ok onry Conrucion 3 onry Conrucion 4 Finl Ex eril y li: ye coponen & level deign coniderion equiliriu - F & uppor, rue, cle, e, pinned re, rigid re eril rin & re (E), eperure, conrin Finl Ex eril y li (coninued): e diriued lod, riury widh, V&, ree, deign, ecion properie (I & S), pich, delecion colun ree, deign, ecion properie (I & r) re, V &, -, eecive lengh wih join ine, connecion deign, enion eer deign onry Conrucion 6 onry Conrucion 7 7

8 Finl Ex eril y li (coninued): oundion ype izing & rucurl deign overurning nd liding deign peciic eel (ASD & LRFD) concree wood onry onry Conrucion 8 8