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CE 5306
The Design Buckling Strength (W- sec
(1) Design Condition
Design code AISC-14 LRFDSection size Steel W-profle W14*74
50 A!Unr!ced "ength
!0
!0
!0
E#ecti$e "ength
1
1
1
"#$ Fle%&r#l '&c(ling #)o&t -#%is +,7741
0,5+17.
!5,!105
44,+07
")$ Fle%&r#l '&c(ling #)o&t /-#%is ,751
1.1,!77
44,54.5+
.74,04!7
"c$orsion#l '&c(ling #)o&t -#%is 4++0,51
4,775.
7+,+047
"d$ Loc#l '&c(ling 1!,.++!4
!5,4!!!!
0,0415!
1
1
Steel 2#teri#l"F3$"(si$
L%"t$
L3"t$
Lz"t$
%
3
z
(3) C!lcul!te %&n
3L6r3
Fe "(si$
Fcr "(si$
8n "(ips$
%L6r%
Fe "(si$
Fcr "(si$
8n "(ips$
Fe "(si$
Fcr "(si$
8n "(ips$
) 6t
96t:
S;R"F36<$
;s
;#
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; 1
9e Design '&c(ling Strengt9 44,+07%&n (ki's)
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tion)
() !teri!l &ro'erties
< "(si$ !000= "(si$ 11!00
!1,.+,04
!,4.
75
14
50
,.7
10,1
0,7.50,45
9 "in$ 11,44
>on slender
>on slender
er2 pro?ect- )3 Srik!r*
A "in!$r% "in$
r3 "in$
I% "in4$
I3 "in4$
C: "in+$
@ "in4$)
"in$
t "in$t: "in$
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CE 5306
The Design Buckling Strength (WT- Secti
(1) Design Condition
Design Code AISC-14 LRFDSection Size Steel W - profle W 1!*.1
50 A!Unr!ced "ength
!0
!0
!0
E#ecti$e "ength
1
1
1
"#$ Fle%&r#l '&c(ling #)o&t -#%is 7.,+..5!
4+,!!47
1,747
+.,.7
")$ Fle%&r#l '&c(ling #)o&t /-#%is +.,5714
+0,.711
5,455!
7+!,+05
"c$Loc#l '&c(ling 10,+5574
15,!07.
0,0415!1
1; 1
9e design )&c(ling strengt9 +.,.7
Steel #teri#l "F3$ "(si$
L% "t$
L3 "t$
Lz "t$
%
3
z
(3) C!lcul!te %&n
3L6r3
Fe "(si$
Fcr "(si$
8n "(ips$
%L6r%
Fe "(si$
Fcr "(si$
8n "(ips$
) 6t
96t:
S;R"F36<$;s
;#
%&n (ki's)
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on)
() !teri!l &ro'erties
< "(si$ !000= "(si$ 11!00
!,,5
,05
!
!!1
4,.
,!!
1
1,!!0,705
9 "in$ 10,7.
>on slender
>on slender
er2 8ro?ect - )3 Srik!r*
A "in!$r% "in$
r3 "in$
I% "in4$
I3 "in4$
C: "in+$
@ "in4$)
"in$
t "in$t: "in$
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CE 5306
The Design Buckling Strength ("- Section)
(1) Design Condition
Design Code AISC-14 LRFDSection size Steel L- profle L 4**16!
50 A!Unr!ced "ength
L"t$ !0
L6r 101,0!!5.0+45
!.,075155
!,70471.5.+
+,+51+1.+4
Loc#l '&c(ling l6t +,4 >on Slender
0,0415!!74
1
1; 1
+,+51+!
Steel #teri#l "F3$ "(si$
(3) C!lcul!te %&n
Fe "(si$
Fcr "(si$
8n "(ips$
S;R"F36<$
;s
;#
9e design '&c(ling Strengt9 "8n$ "ips$
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() !teri!l &ro'erties
< "(si$ !000= "(si$ 11!00
,!51,!4
0,.5.
5,0!
!,04
0,!55
0,!.1
l "in$ 4
t "in$ 0,+!5
er2 8ro?ect- )3 Srik!r*
A "in!$r% "in$
r3 "in$
I% "in4$
I3 "in4$
C: "in+$
@ "in4$
)
"in$
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CE-5306
Section Di+ensions
Design Code AISC-14 LRFD
0,5 in
!0 in
0,75 in9 in< !000 (si
+ (si
+ (si
0 t
1
Built U' Section &ro'erties
A 4,+!5
+55,
+++,.
1+,+ in
4,. in
4.!,7+
57,5
@ !,+
!+0041,+7
5,!!!745+5+
1150,7+507
0,0001!547+
Check ,or l!nge !nd We slenderness
!0 0,!!!
10,7.5!7.01.
!.,.!10+0Fl#nge is non-co2p#ct
104 0,.44!7
10+,7174.7.
1+1,7717047+
t
)
t:
F3":$
F3"$
L)
C)
in!
I% in4
I3 in4
r%
r3
S% in
% in
in4
C: in+
rts
<60,7*F3
@*c6S%*9o
B (c
Bp
Br
B: (c
Bp:
Br:
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We) is co2p#ct,
Check ,or Section &l!sticit.
1.,!!7+5.t
47,7!.+!4.4t
Section is pl#stic
Checking the /eur!l criteri!
15,!4(ips,in
17417,1+(ips,in
DI60E (ips
15,!4(ips,in
17417,1+(ips,in
155.,!51(ips,in
1400,45!7.7(ips,in
>o WL'
AL<E(ips,in
he Design leur!l Strength
Lp
Lr
p
n
p
n
Fcr
n
Gn
n
Gn
n
Gn
n
Gn
n
Gn
n
Gn
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er2 8ro?ect - '3 Srik!r*
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121*16(ips,in
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CE-5306
Section Di+ensions
1 in
10 in
0,75 in9 50 in< !000(si
50 (si
50 (si
0 t
1
Built U' Section &ro'erties
A .,75
1+1!,1
1++,..
!0,. in
!,075 in
+50,4
744,7
@ 7,5+
10.75
!,55+.+
.!.,5714
0,000!!
Check ,or l!nge !nd We slenderness
!0 0,4+41
,151+1!
!4,0.1Fl#nge is non-co2p#ct
1, 1,7...54
0,55!7
17,!74!
t
)
t:
F3":$
F3"$
L)
C)
in!
I% in4
I3 in4
r%
r3
S% in
% in
in4
C: in+
rts
<60,7*F3
@*c6S%*9o
B (c
Bp
Br
B: (c
Bp:
Br:
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We) is non-co2p#ct
7,!17t
!0,011t
Section is pl#stic
7!1.,5(ips,in
4+,+5(ips,in
DI60E (ips
7!1.,5(ips,in
4+,+5(ips,in
!+71,0!(ips,in
!4047,11(ips,in
!.+,0(ips,in
!15.7,4.(ips,in
he Design leur!l Strength
Lp
Lr
p
n
p
n
Fcr
n
Gn
n
Gn
n
Gn
n
Gn
n
Gn
n
Gn
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er2 8ro?ect - '3 Srik!r*
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3326*65(ips,in
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CE 5306
Section Di+ensions
1 in
10 in
0,75 in9 50 in< !000(si
50 (si
50 (si
!5 t
1
Built U' Section &ro'erties
A .,75
1+1!,1
1++,..
!0,. in
!,075 in
+50,4
744,7
@ 7,5+
10.75
!,55+.+
.!.,5714
0,000!!
Check ,or l!nge !nd We slenderness
!0 0,4+41
,151+1!
!4,0.1Fl#nge is non-co2p#ct
1, 1,7...54
0,55!7
17,!74!
t
)
t:
F3":$
F3"$
L)
C)
in!
I% in4
I3 in4
r%
r3
S% in
% in
in4
C: in+
rts
<60,7*F3
@*c6S%*9o
B (c
Bp
Br
B: (c
Bp:
Br:
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We) is non-co2p#ct
7,!17t
!0,011t
Section is el#stic
7!1.,5(ips,in
4+,+5(ips,in
!,!17+(ips
1510,05(ips,in
15!,75(ips,in
!+71,0!(ips,in
!4047,11(ips,in
!.+,0(ips,in
!15.7,4.(ips,in
he Design leur!l Strength
Lp
Lr
p
n
p
n
Fcr
n
Gn
n
Gn
n
Gn
n
Gn
n
Gn
n
Gn
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er2 8ro?ect - '3 Srik!r*
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135*240422254(ips,in
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CE 5306
Section Di+ensions
1,5 in
!5 in
0,75 in9 7! in< !000(si
50 (si
50 (si
45 t
1
Built U' Section &ro'erties
A 10!
11!70,
0+,5+
,!. in
+,1. in
01!,54
!4!,!5
@ 7,54
5!75+5
+,0!07
.!.,5714
0,00017
Check ,or l!nge !nd We slenderness
!0 0,!..+75
,151+1!
!4,0.1l!nge is non-co+'!ct
1! 1,.5+41
0,55!7
17,!74!
t
)
t:
F3":$
F3"$
L)
C)
in!
I% in4
I3 in4
r%
r3
S% in
% in
in4
C: in+
rts
<60,7*F3
@*c6S%*9o
B (c
Bp
Br
B: (c
Bp:
Br:
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We is non-co+'!ct
!1,.+07t
5,5!1t
Section is inel!stic
ielding
1+!11!,5(ips,in
14501,(ips,in
"TB
4.,+107(ips
1!0+!,4(ips,in
10.+!,1(ips,in
"B
1!0+,(ips,in
10..4,!(ips,in
W"B
!55,4+(ips,in
!+5,.!(ips,in
he Design leur!l Strength
Lp
Lr
p
n
Fcr
n
Gn
n
Gn
n
Gn
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er2 8ro?ect - '3 Srik!r*
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65*41522455(ips,in
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CE 5306
Section Di+ensions
0,5 in
!0 in
0,75 in9 in< !000(si
50 (si
+ (si
45 t
1
Built U' Section &ro'erties
A 10!
11!70,
0+,5+
,!. in
+,1. in
01!,54
!4!,!5
@ 7,54
5!75+5
+,0!07
1150,74
0,000!
Check ,or l!nge !nd We slenderness
!0 0,!!!
10,7.5!.
!.,.!1l!nge is non-co+'!ct
104 0,.44!7
10+,7175
1+1,77!
t
)
t:
F3":$
F3"$
L)
C)
in!
I% in4
I3 in4
r%
r3
S% in
% in
in4
C: in+
rts
<60,7*F3
@*c6S%*9o
B (c
Bp
Br
B: (c
Bp:
Br:
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We is non-co+'!ct
Check ,or El!sticit.
!5,7+1t
+5,.41!!t
Section is inel!stic
Check ,or leur!l Criteri!
ielding
11+7!1(ips,in
10504.,(ips,in
"TB
50,1+404(ips
715,!+(ips,in
.74!1,74(ips,in
"B
55,.(ips,in
.5.1.,04(ips,in
W"B
>o WL' (ips,in
AL<E(ips,in
he Design leur!l Strength
Lp
Lr
p
n
Fcr
n
Gn
n
Gn
n
Gn
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er2 8ro?ect - '3 Srik!r*
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45414*0225015(ips,in
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