Date post: | 07-Aug-2018 |
Category: |
Documents |
Upload: | sher-afgan |
View: | 228 times |
Download: | 0 times |
of 19
8/20/2019 Lecture 5 - Gravity Load Design.ppt
1/50
1
Villanova University Dept. of Civil & Environmental Engineering
CEE 4606 - Capstone IIStructural Engineering
CEE 4606 - Capstone IIStructural Engineering
Lecture 5 – Gravity LoadDesign (art !"
8/20/2019 Lecture 5 - Gravity Load Design.ppt
2/50
2
Villanova University Dept. of Civil & Environmental Engineering
CEE 4606 - Capstone IIStructural Engineering
Outline1. Review of Progress Report #1 Presentations
. I!C Concrete "esign Reuire$ents
%. !ea$ & One 'a( Sla) "esign4. Sla) *+ic,ness Consierations
. /oa Pat+ an ra$ing Possi)ilities
6. Connection & nal(sis Issues
2. Seis$ic "etailing Reuire$ents
3. 'or, *as,s
8/20/2019 Lecture 5 - Gravity Load Design.ppt
3/50
3
Villanova University Dept. of Civil & Environmental Engineering
CEE 4606 - Capstone IIStructural Engineering
Progress Report #1 Co$$ents
Overall5 a ver( goo o)
Co$$ents on presentations7
8 *i$ing goo
8 "on9t worr( a)out t+e intro stu: ne;tti$e
8
8/20/2019 Lecture 5 - Gravity Load Design.ppt
4/50
8/20/2019 Lecture 5 - Gravity Load Design.ppt
5/50
5
Villanova University Dept. of Civil & Environmental Engineering
CEE 4606 - Capstone IIStructural Engineering
I!C Concrete "esign Reuire$ents I!C C+apter 1@
Ai$ics CI %13 Coe
8 I!C 000 version )ase on 1@@@ CI %13
8 I!C 00% will use 00 version of CI%13
irst seven sections >1@01 8 1@02?correspon to CI %13 C+apters 1 to2
8/20/2019 Lecture 5 - Gravity Load Design.ppt
6/50
6
Villanova University Dept. of Civil & Environmental Engineering
CEE 4606 - Capstone IIStructural Engineering
I!C Concrete "esign Reuire$ents Section 1@03 gives speciBc
$oiBcations to CI %13
8 "eals wit+ $eatD of CI Coe Sections 1@0@ 8 1@16 eal wit+
specialie areas8 Sec. 1@10 8 Seis$ic "esign
Reuire$ents8 Sec. 1@1 8 nc+orage to Concrete
Fet to ,now t+is ocu$ent===
8/20/2019 Lecture 5 - Gravity Load Design.ppt
7/50
7
Villanova University Dept. of Civil & Environmental Engineering
CEE 4606 - Capstone IIStructural Engineering
/oa Pat+ G ra$ing Issues !uiling ra$e S(ste$
8 ra$e for gravit( loa
8 S+ear walls for lateral loa
Consier support of t+ec+apel gravit( loas7
8 '+ere o t+e colu$ns goH
8 '+at )ea$s o I neeH
8 ow o I esign $( sla)H
8/20/2019 Lecture 5 - Gravity Load Design.ppt
8/50
8
Villanova University Dept. of Civil & Environmental Engineering
CEE 4606 - Capstone IIStructural Engineering
!ea$ & One 'a( Sla) "esign
Review 'e presu$a)l( ,now +ow to o
t+e following fro$ CEE %47
8 Design a rectangular #eam ofun$no%n crosssection si'e
8 Design a rectangular #eam of $no%n
crosssection si'e8 Design a simply supported one %ay
sla#
8/20/2019 Lecture 5 - Gravity Load Design.ppt
9/50
9
Villanova University Dept. of Civil & Environmental Engineering
CEE 4606 - Capstone IIStructural Engineering
!ea$ & One 'a( Sla) "esign
Review 'e presu$a)l( ,now +ow to o
t+e following fro$ CEE %47
8 Design a #eam for positive moment
8 Design a #eam for negative moment
8 Design a dou#ly reinforced #eam
(#eam %it) compressionreinforcement"
8 Design a #eam for s)ear
8/20/2019 Lecture 5 - Gravity Load Design.ppt
10/50
10
Villanova University Dept. of Civil & Environmental Engineering
CEE 4606 - Capstone IIStructural Engineering
"esign of Continuous !ea$s an
Sla)s Jou ,now +ow to
esign cross-sections for positive
or negative $o$ent Reinforce$ent
follows t+e $o$entiagra$
'+( continuousspansH8 *oments
8 De+ections
*wo Si$ple Spans
Continuous over Center Support
Gap
δ
δ
Μ
Μ
8/20/2019 Lecture 5 - Gravity Load Design.ppt
11/50
11
Villanova University Dept. of Civil & Environmental Engineering
CEE 4606 - Capstone IIStructural Engineering
"esign Ao$ents >Knifor$ "ist.
/oaing? Si$ple Spans
8 w/G3
Continuous Spans8 nal(sis far $ore co$plicate
8 '+at t(pe of B;it( o we actuall( +aveH
8 Aust consier e:ects of patterneloaing
8 or$ation of plastic +inges allows for$o$ent reistri)ution
8/20/2019 Lecture 5 - Gravity Load Design.ppt
12/50
12
Villanova University Dept. of Civil & Environmental Engineering
CEE 4606 - Capstone IIStructural Engineering
"esign Ao$ents 8 Continuous Spans
'e +ave four anal(sis options
8 Elastic nal(sis >prefera)l( S*"?
8 Elastic nal(sis wG Ao$entReistri)ution
8 ppro;i$ate ra$e nal(sis
8 CI ppro;i$ate Ao$ent CoeLcients See AcCor$ac te;t C+apter 1%
8/20/2019 Lecture 5 - Gravity Load Design.ppt
13/50
13
Villanova University Dept. of Civil & Environmental Engineering
CEE 4606 - Capstone IIStructural Engineering
Sla) *+ic,ness Consierations
'+at governs t+e t+ic,ness of a sla)H
8 ,le-ural trengt)
8 )ear 8 De+ections
Ksuall(5 eMections will govern t+et+ic,ness reuire$ents for a one-wa( sla)
8 Sie sla) )ase on eMection reuire$ents8 C+ec, s+ear
8 "esign reinforce$ent for Me;ure
8/20/2019 Lecture 5 - Gravity Load Design.ppt
14/50
14
Villanova University Dept. of Civil & Environmental Engineering
CEE 4606 - Capstone IIStructural Engineering
Sla) *+ic,ness Consierations
Review AcCor$ac te;t5 C+. >servicea)ilit(? an C+. % >one-wa(
sla)s? Review notes fro$ CEE %45
lectures on one-wa( sla) esign
an servicea)ilit( CI Sec. @...1
8/20/2019 Lecture 5 - Gravity Load Design.ppt
15/50
15
Villanova University Dept. of Civil & Environmental Engineering
CEE 4606 - Capstone IIStructural Engineering
Sla) *+ic,ness Consierations>suc+ t+at we o not nee to co$pute
eMections? or si$pl(-supporte )ea$s5 total )ea$
ept+ N+9 $ust )e at least /G16
8 / !0 ft. long simply supported #eam must #eat least !1 in. deep.
or si$pl(-supporte one-wa( sla)s5 totalsla) t+ic,ness N+9 $ust )e at least /G0
8 / !2 ft. long simply supported one%ay sla#must #e at least 0 in. deep.
Jou will +ave to loo, up ot+er values===
8/20/2019 Lecture 5 - Gravity Load Design.ppt
16/50
16
Villanova University Dept. of Civil & Environmental Engineering
CEE 4606 - Capstone IIStructural Engineering
Sla) *+ic,ness Consierations
So$et+ing to ,eep in $in.
8 Jour $aterial properties=
8 *+ese ta)les are )ase on nor$alstrengt+ concrete
8 Jou $a( wis+ to consier creative wa(sto aust ta)les for (our low concretestrengt+
3int4 )in$ a#out %)at t)e $ey concretematerial property related to de+ections is
8/20/2019 Lecture 5 - Gravity Load Design.ppt
17/50
17
Villanova University Dept. of Civil & Environmental Engineering
CEE 4606 - Capstone IIStructural Engineering
/oa Pat+ G ra$ing Possi)ilities
ow we can )egin to evelop afra$ing plan for our structure
8 *(pical practice on site is a in. t+ic, sla)8 'e +ave a $et+oolog( to eter$ine +ow
far a sla) of a given t+ic,ness can span
8 "o our $aterial properties +ave an(
e:ectH
/et9s loo, at a plan view of t+e two-stor( section
8/20/2019 Lecture 5 - Gravity Load Design.ppt
18/50
18
Villanova University Dept. of Civil & Environmental Engineering
CEE 4606 - Capstone IIStructural Engineering
/n Q 10. ft.
/n Q 1.0 ft.
/n Q 14. ft.
/n Q 2.0 ft.
)in$ %e6ll need some additional framing mem#ers7
Note: columns
automatically
placed at each
wall end or
corner
8/20/2019 Lecture 5 - Gravity Load Design.ppt
19/50
19
Villanova University Dept. of Civil & Environmental Engineering
CEE 4606 - Capstone IIStructural Engineering
ra$ing Concepts
/et9s use asi$ple e;a$plefor ouriscussion
Colu$n spacing8 %0 ft. on center
*+in, a)outrelating it to (ouresign as weiscuss
Plan
8/20/2019 Lecture 5 - Gravity Load Design.ppt
20/50
20
Villanova University Dept. of Civil & Environmental Engineering
CEE 4606 - Capstone IIStructural Engineering
ra$ing Concepts
'e can Brstassu$e t+at
we9ll +ave $aorgirers runningin one irectionin our one-wa(
s(ste$
Plan
8/20/2019 Lecture 5 - Gravity Load Design.ppt
21/50
21
Villanova University Dept. of Civil & Environmental Engineering
CEE 4606 - Capstone IIStructural Engineering
ra$ing Concepts
If we span)etween girers
wit+ our sla)5t+en we +ave aloa pat+5 )ut ift+e spans are
too long
Plan
8/20/2019 Lecture 5 - Gravity Load Design.ppt
22/50
22
Villanova University Dept. of Civil & Environmental Engineering
CEE 4606 - Capstone IIStructural Engineering
ra$ing Concepts
'e will nee tos+orten up t+e
span wit+aitional )ea$s
Plan
8/20/2019 Lecture 5 - Gravity Load Design.ppt
23/50
23
Villanova University Dept. of Civil & Environmental Engineering
CEE 4606 - Capstone IIStructural Engineering
ra$ing Concepts
!ut we nee tosupport t+e loa
fro$ t+ese new)ea$s5 so wewill neeaitional
supporting$e$)ers
Plan
8/20/2019 Lecture 5 - Gravity Load Design.ppt
24/50
24
Villanova University Dept. of Civil & Environmental Engineering
CEE 4606 - Capstone IIStructural Engineering
ra$ing Concepts
ow we +ave avia)le plan
/et9s t+in, )ac,t+roug+ our loapat+ now toientif( our
+eirarc+(D of$e$)ers
Plan
8/20/2019 Lecture 5 - Gravity Load Design.ppt
25/50
25
Villanova University Dept. of Civil & Environmental Engineering
CEE 4606 - Capstone IIStructural Engineering
ra$ing Concepts
One-'a( Sla)>continuous?
!ea$s8 Interior >*-)ea$s?
8 E;terior >/-)ea$s?
Firers
8 Interior >*-)ea$s?8 E;terior >/-)ea$s?
Plan
8/20/2019 Lecture 5 - Gravity Load Design.ppt
26/50
26
Villanova University Dept. of Civil & Environmental Engineering
CEE 4606 - Capstone IIStructural Engineering
ra$ing Concepts
ote t+at )( runningt+e one-wa( sla) int+is E' irection5 we
are actuall( $a,ingt+e E' running )ea$sour $aor girers
*+e S running )ea$s si$pl( transfer t+e
loa out to t+esegirers >or irectl( toa colu$n?
Plan
8/20/2019 Lecture 5 - Gravity Load Design.ppt
27/50
27
Villanova University Dept. of Civil & Environmental Engineering
CEE 4606 - Capstone IIStructural Engineering
ra$ing Concepts
ow let9s go)ac, t+roug+
wit+ a slig+tl(i:erent loapat+
Plan
8/20/2019 Lecture 5 - Gravity Load Design.ppt
28/50
28
Villanova University Dept. of Civil & Environmental Engineering
CEE 4606 - Capstone IIStructural Engineering
ra$ing Concepts
'e againassu$e t+at
we9ll +ave $aorgirers runningin one irectionin our one-wa(
s(ste$
Plan
8/20/2019 Lecture 5 - Gravity Load Design.ppt
29/50
29
Villanova University Dept. of Civil & Environmental Engineering
CEE 4606 - Capstone IIStructural Engineering
ra$ing Concepts
*+is ti$e5 let9st+in, a)outs+ortening up t+esla) span )(running )ea$s into our girers.
Our one-wa( sla) will transfer ourloa to t+e )ea$s.
Plan
8/20/2019 Lecture 5 - Gravity Load Design.ppt
30/50
30
Villanova University Dept. of Civil & Environmental Engineering
CEE 4606 - Capstone IIStructural Engineering
ra$ing Concepts
'it+ t+isapproac+5 we +avealrea(esta)lis+e our+eirarc+(D
*+e onl(i:erence is in t+eirectionD of ourloa pat+
8 @0 egree rotationPlan
8/20/2019 Lecture 5 - Gravity Load Design.ppt
31/50
31
Villanova University Dept. of Civil & Environmental Engineering
CEE 4606 - Capstone IIStructural Engineering
ra$ing Concepts - Conclusions
Eit+er loa pat+ will wor,
In t+is case5 t+e( are ientical
'it+ a rectangular )a( >instea of asuare? )a(5 t+ere will )e ai:erence
*raeo: is usuall( in nu$)er ofsupporting $e$)ers vs. span ofsupporting $e$)ers
8/20/2019 Lecture 5 - Gravity Load Design.ppt
32/50
32
Villanova University Dept. of Civil & Environmental Engineering
CEE 4606 - Capstone IIStructural Engineering
*wo /oa Pat+ Options
8/20/2019 Lecture 5 - Gravity Load Design.ppt
33/50
33
Villanova University Dept. of Civil & Environmental Engineering
CEE 4606 - Capstone IIStructural Engineering
ra$ing Concepts - Consierations
or (our structure7
8 /oo, for a naturalD loa pat+
8 Ientif( w+ic+ colu$n lines are )estsuite to +aving $aor fra$ing$e$)ers >i.e. girers?
8 ssu$e walls are not t+ere forstructural support5 )ut consier t+att+e $a( +elp (ou in construction>for$ing?
8/20/2019 Lecture 5 - Gravity Load Design.ppt
34/50
34
Villanova University Dept. of Civil & Environmental Engineering
CEE 4606 - Capstone IIStructural Engineering
Connection G nal(sis Issues
'it+ continuous reinforceconcrete fra$ing s(ste$s5
connections are a $aor issue wit+respect to7
8 "etailing of reinforce$ent at t+ese
congeste areas8 ssu$ptions regaring B;it( of
)ea$s an sla)s
8/20/2019 Lecture 5 - Gravity Load Design.ppt
35/50
35
Villanova University Dept. of Civil & Environmental Engineering
CEE 4606 - Capstone IIStructural Engineering
Connection G nal(sis Issues
/et9s Brstconsier our
continuous one-wa( sla) >1Dstrip s+own?fra$ing into an
e;terior>spanrel? )ea$
Plan
8/20/2019 Lecture 5 - Gravity Load Design.ppt
36/50
36
Villanova University Dept. of Civil & Environmental Engineering
CEE 4606 - Capstone IIStructural Engineering
Sla)-E;terior !ea$ Connection
Sla) is a si; span continuous s(ste$
So$e B;it( at en of sla) ue to torsionalrigiit( of e;terior )ea$5 )ut w+at +appensw+en )ea$ an sla) crac,H
8 "o we want to count on B;it(H lso5 if we esign sla) for negative $o$ent
+ere5 we $ust evelop reinforce$ent >li,e acantilever?
8/20/2019 Lecture 5 - Gravity Load Design.ppt
37/50
37
Villanova University Dept. of Civil & Environmental Engineering
CEE 4606 - Capstone IIStructural Engineering
Sla)-E;terior !ea$ Connection
*(picalassu$ptions78 Si$ple support at
en8 o $o$ent in
sla) at en
8 Place so$ereinforce$ent attop of sla) tocontrol crac,ing
8 "esign e;terior
)ea$ for $ini$altorsion
8/20/2019 Lecture 5 - Gravity Load Design.ppt
38/50
38
Villanova University Dept. of Civil & Environmental Engineering
CEE 4606 - Capstone IIStructural Engineering
Connection G nal(sis Issues
ow let9sconsier our
)ea$-girer oints
Plan
8/20/2019 Lecture 5 - Gravity Load Design.ppt
39/50
8/20/2019 Lecture 5 - Gravity Load Design.ppt
40/50
40
Villanova University Dept. of Civil & Environmental Engineering
CEE 4606 - Capstone IIStructural Engineering
Sla)-E;terior !ea$ Connection
*(picalassu$ptions78 Si$ple support at
en8 o $o$ent in
)ea$ at en
8 Place so$ereinforce$ent attop of )ea$ tocontrol crac,ing
8 "esign e;terior
girer for $ini$altorsion
Vill U i i CEE 4606 C II
8/20/2019 Lecture 5 - Gravity Load Design.ppt
41/50
41
Villanova University Dept. of Civil & Environmental Engineering
CEE 4606 - Capstone IIStructural Engineering
nal(sis 8 One-'a( Sla) & *-!ea$s
or t+e si$ple ele$ents ust escri)e5w+ere supports are provie )( )ea$san girers5
8 Supporting ele$ents +ave so$e sti:ness5)ut it is fairl( s$all
8 ssu$ption of treating one-wa( sla)s an *-)ea$s as continuous )ea$s is vali
8 fra$e anal(sis is not neee since t+ere
are no colu$ns involve8 Si$ple anal(sis $et+os can )e use if all
assu$ptions are $et >i.e. CI $o$entcoeLcients?
Vill U i it CEE 4606 C t II
8/20/2019 Lecture 5 - Gravity Load Design.ppt
42/50
42
Villanova University Dept. of Civil & Environmental Engineering
CEE 4606 - Capstone IIStructural Engineering
Connection G nal(sis Issues
inall(5 let9s loo,at )ea$-colu$n
an girer-colu$n oints
*+ree situations7
8 Interior colu$n
8 E;terior colu$n
8 Corner colu$n
Plan
Vill U i it CEE 4606 C t II
8/20/2019 Lecture 5 - Gravity Load Design.ppt
43/50
43
Villanova University Dept. of Civil & Environmental Engineering
CEE 4606 - Capstone IIStructural Engineering
Interior Colu$n Connection
Firers fra$ing in to a colu$n78 Colu$ns will provie so$e rigiit(8 Ao$ents will epen upon
istri)ution of sti:ness
8 ra$e anal(sis is warrante toeter$ine t+ese $o$ents
8 Kn)alance loaing >patterne liveloa? $ust )e consiere
8 Foal7 "eter$ine $o$ents ingirers >t+e( will not necessaril()e eual?5 as well as a;ial loa &$o$ent co$)inations for colu$ns
!ea$Ggirer reinforce$ent$ust )e continuous t+roug+
oint
Plan
Μ 2 Μ
1
Μ cl
Μ cu
Vill U i it CEE 4606 C t II
8/20/2019 Lecture 5 - Gravity Load Design.ppt
44/50
44
Villanova University Dept. of Civil & Environmental Engineering
CEE 4606 - Capstone IIStructural Engineering
E;terior Colu$n Connection
Sa$e )asic situation78 Colu$ns will provie so$e rigiit(8 Ao$ents will epen upon
istri)ution of sti:ness
8 ra$e anal(sis is warrante toeter$ine t+ese $o$ents
8 Kn)alance loaing >patterne liveloa? $ust )e consiere
8 Foal7 "eter$ine $o$ents in girers>t+e( will not necessaril( )e eual?5
as well as a;ial loa & $o$entco$)inations for colu$ns
!ea$Ggirer reinforce$ent $ust)e evelope for negative$o$ent
Plan
Μ 1
Μ cl
Μ cu
Villano a Uni ersit CEE 4606 Capstone II
8/20/2019 Lecture 5 - Gravity Load Design.ppt
45/50
45
Villanova University Dept. of Civil & Environmental Engineering
CEE 4606 - Capstone IIStructural Engineering
Corner Colu$n Connection
*+is is essentiall( t+e sa$esituation as an e;teriorcolu$n
ote t+at w+ere we +ave)ea$s >not girers? fra$inginto colu$ns5 t+e sa$eprinciples appl(
8 owever5 t+ese $o$ents aret(picall( ver( s$all an willusuall( not control t+e esign
Μ 1
Μ cl
Μ cu
Plan
Villanova University CEE 4606 Capstone II
8/20/2019 Lecture 5 - Gravity Load Design.ppt
46/50
46
Villanova University Dept. of Civil & Environmental Engineering
CEE 4606 - Capstone IIStructural Engineering
nal(sis 8 Firers & !ea$s ra$ing Into
Colu$ns or t+ese ele$ents5 support is provie
)( colu$ns
Colu$ns +ave su)stantial sti:ness anwill attract so$e $o$ents8 ssu$ption of treating t+ese girers an
)ea$s as continuous )ea$s is not vali
8 fra$e anal(sis is neee to eter$ine t+eappropriate istri)ution of $o$ents
8 Elastic anal(sis is reco$$ene >S*"5PC!ea$?
Villanova University CEE 4606 Capstone II
8/20/2019 Lecture 5 - Gravity Load Design.ppt
47/50
47
Villanova University Dept. of Civil & Environmental Engineering
CEE 4606 - Capstone IIStructural Engineering
Seis$ic "etailing Reuire$ents for
Reinforce Concrete - Introuction I!C Section 1@10
CI %13-@@ C+apter 1
*+ese two sections5 toget+er5ientif( speciBc etailingreuire$ents relate to seis$ic
esign of concrete structures /evel of etailing reuire is )ase
on Seis$ic "esign Categor(
Villanova University CEE 4606 Capstone II
8/20/2019 Lecture 5 - Gravity Load Design.ppt
48/50
48
Villanova University Dept. of Civil & Environmental Engineering
CEE 4606 - Capstone IIStructural Engineering
'or, *as,s
"eter$ine Bnal loas on t+e structure8 Fravit( loas >ea5 live?
8 /ateral loas >seis$ic5 win?
*russ anal(sis on roof & esign of roof$e$)ers
"etailing of roof-to-structure connection
"evelop a loa pat+ >fra$ing plan? tosupport t+e gravit( loas associatewit+ t+e secon stor( c+apel
Villanova University CEE 4606 Capstone II
8/20/2019 Lecture 5 - Gravity Load Design.ppt
49/50
49
Villanova University Dept. of Civil & Environmental Engineering
CEE 4606 - Capstone IIStructural Engineering
'or, *as,s
/oo, into +ow t+e selection of Seis$ic"esign Categor( " will a:ect concreteesign etailing reuire$ents for (our
)ea$s5 colu$ns5 an sla) 'or, on esign of one-wa( sla)5 )ea$s5
an girers8 8e %ill discuss design for s)ear and torsion
ne-t time9
Villanova University CEE 4606 Capstone II
8/20/2019 Lecture 5 - Gravity Load Design.ppt
50/50
Villanova University Dept. of Civil & Environmental Engineering
CEE 4606 - Capstone IIStructural Engineering
ssign$ent for *uesa(
!. u#mit a detailed s$etc) s)o%ing your framing plan (load pat) for gravity loads" for t)e secondstory c)apel8 :dentify all columns; #eam; and girder locations; and
specify a sla# t)ic$ness
1. ummari'e on one s)eet )o% t)e selection ofeismic Design Category D %ill ac detailingre?uirements for your #eams; columns; and sla#
8 Don6t consider s)ear %alls for no% (t)ey %ill #e masonry"