Tugas Baja Kel 1
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Transcript of Tugas Baja Kel 1
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Pen!ele0aian :
1. Perhitungan Pembebanan
a) "ean Lantai
•
"ean ati+ terdiri dari :- "ean Pelat = a L2 erat #elat
= 6 2 3* = *3 kg
- "ean alok anak = a erat alok anak
= 6 ' = 14 kg
PD = "ean Pelat 5 "ean alok anak
= *3 5 14
= **4 kg
• "ean idu#
"ean hidu# lantai = 2* kg7m'
PL = a L2 2*
= 6 2 2*
= ' kg
) "ean Ata#
• "ean ati+ terdiri dari :
- "ean .ording = a erat gording
= 6 6+1' = '684 kg
- "ean ata# gal9alum = a erat ata# gal9alum 7 o0 1* ;
= 6 1 7+, = 628116* kg
- $katan angin = a jarak gording mendatar ikatan angin
= 6 1 1
= 6 kg
PD = "ean gording 5 "ean ata# gal9alum 5 ikatan angin
= '684 5 62+116* 5 6
= 1,82' kg
• "ean idu#
"ean hidu# ata# = * kg7 titik PL = * kg
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2. Cek Keamanan Profil
a) Penam#ang "alok
- /ek Lentur
Dari SAP dida#at ha0il 0eagai erikut8
u = ma = 16,3+2' kg8m
Proil %& '*
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@ #> = '+6 ( Efy )1
2
@ # = '+6
(
200000
240
)
1
2
@ # = 14+*
@ r = 1 ( Efy )1
2=28,9
@ r> = *+ ( Efy )1
2=164,5
h
tw
**+'' 14+* #roil 0a!a# kom#ak
Da#at di0im#ulkan ah>a #roil %& '*
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- /ek .e0er
Dari SAP dida#at ha0il Fu = Fmak0 =122,+'2 kg
A> = d t> = '* = 23* mmG
= d H 2t = '* -2 11 = '24 mm
h7t> I 2+23 (?7!)172
'247 I 2+23 (2723)
36+46 I 63+66 + maka K9 = 1+ dan /9 = 1+
uat ge0er nominal
KFn = K9 +6 &! A> />
= 1 +6 23 23* 171
='*2+4 n
='*24 kg
Cek syarat keamanan
KFn M Fu
'*24 kg M 122,+'2 kg88888888888888888888888888888888888888888888888( aman terhada# ge0er)
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) Penam#ang "alok-olom
Dari SAP dida#at ha0il 0eagai erikut8
- Pro#erti Penam#ang olom
Proil %& '*
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$ = 111
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"adan: 7t =( '*-214)71 = '1+3 1+3, √(?7!) = 3'+1→ tidak
lang0ing
- egangan kriti0 tekuk-lentur
KL y
r y =
3000
38,774 = +'
KL x
r x=
6000
145,157 = 31+'' 3+1√(?7!) = 1'*+,
Fe =
π 2 E
( KL
r )
2 =π
2200000
(41,33)2=11*3+1* Pa
&r =0,658
(¿¿240/1155,32)¿
= +,1 &!
- egangan kriti0 tekuk-#untir
&e= π
2 EC w
( K 2 L) ²
5 .JQ1
I x+ I y
= π
2200000 x 2,302 x 10
11
(3000) ² 5 4 1,36*2Q
1
118,92×106
= 6*3+6*41 Pa F y
F e=
240
130,95 = +'6 2+2* erarti tekuk inela0ti0
&r =0,658
(¿¿240/654,66)¿
= +46 &!
- uat ekan Cominal
&r tekuk-lentur &r tekuk-#untir+ maka tekuk !ang terjadi adalah
#untir
Pn = &r A = +46 23 *264
= 14331+4 C
= 14331+4 kg
ΦPn = +, 14331+4
= ,62+', kg
ΦPn Pu
,62+', kg '*2'+,1 kg888888888888888888888888888888888888888888(aman
terhada# tekuk)
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- uat Lentur
n = # = B < !
B =