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CH5LATEX

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`.ZYIAIpRiPNcK`XTdQ` ƒAN?MSE
B
Ballast
weight WB
3 ft
W
1000 lb
c.g.
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š Ipbc"TONcIpK8›
Ÿy
5ft
œ3ft
1000 lb
žx
cg
¡
WB
2ft
¢ W1
œ3ft
2ft
¢ W2
¢W
‘“’(”–•–—™˜ D E?F
£Lw¤
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^,NcPAtr`}m*alQYTktvQSQYKfTdV"Q(MizzlIpRiTOMSE
A
B
10 ft
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š Ipbc"TONcIpK8›
5 ft
­y
5 ft
®x
¬cg
R ªA
W
‘“’”U•|— š DAE©¤
B
£Lw&£
R «B
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`XKP^h`LWXQ(`.] RiQSQalIAP"m*PN‹`LoLRd`L^§IL]¨TdVQMim M“TdQS^E
Shelf brace
A
B
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š Ipbc"TONcIpK8›
­y
®x
RAx
R ªAy
‘“’”U•|— š DAE¥£
£Lwpw
R«
B
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y
¹R x
»Mo
cg
ºw
x
¹Ry
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£LwD
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tvQSN?opVM–Dbca=E
(0,-2,3) z
(0,0,3)
Ã(0,2,3)
y
x
4 ft.
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š Ipbc"TONcIpK8›
ÄFBD of Sign
T1
ÄFBD of Beam
T2
T3
10 lb
x
1 ft
T1
1.5 ft
‘“’”U•|— š DAE©D
£Lw&É
z
2 ft
T4
È2 ft TÆ Ç3ft
5
Å
A
z
A ®x
1.5 ft
.5 ft
A ­y
­y
T2
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] RiQSQBjkalIAP"mhPN‹`XopRd`L^ÍIL]¨TdVQMObc`La=E
1m
A
B
C
4m
35°
65°
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Ô
ÒT
y
1m
65o
B
Õ
Ó
ÖC
x
Ñ50N
‘“’”U•|— š DAE¥É
2m
£Lw×
35o
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P"N‹`LopRO`L^E
F
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Ü
y
F
Fx
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Fy
£Lw&Ý
Û
x
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alI}ƒ‚tuVN?Z[VnV{`XM–`.^q`LMOMuIL]âDLÀ.WoE
c.g.
15°
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P"QYTdQYRO^,NcKQYM6N?TSE
Ü
y
0.2
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x
N
F
‘“’(50)(9.81)kg
”U•|— š DAE¥Ý
£Lw&å
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z
0.3
m
0.3
m
0.4m
m
0.3
A
y
B
x
0.2 m
0.4 m
0.2 m
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š Ipbc"TONcIpK8›=s6VNcMNcM`–opI I PN?KTOROI PZ~TdNcILK(TOIUMim M“TdQS^,MTOV{`XTROQYä "NcROQv^qILROQ0TdV{`LK
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£&DLÀ
FBD of Sign
T1
ï.2m ï.2m
100 N
FBD of Beam
T2
T3
Å
î0.3m Tzì
4
0.3m
®x
í0.2m
T
í0.3m
‘“’”U•|— š 1DAE¥å
£&DAF
TÆ5
í0.4m
í
0.3m
0.2m
T ë2
­y
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V`LM|`g^q`LMiM6IL]rFÀ.WoE
,
b
c.g.
c
B
1000 N
a
20°
Motor
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š Ipbc"TONcIpK8›
­y
òb
ña
Ax
x
A­y
ó
W
o
20
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£&Dp¤
M
F¬c
ó
o
20
n8 $L# !ô¨,=<c
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9 ft
8 ft
4 ft
c.g.
A
C
B
D
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ú
ùC øcg
÷A
Fýx
û
û
ü
y
x
4ft
4ft
70lb
F1
1ft
3ft
z
50lb 60lb
F2
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|ç ILTdQ,TdV{` TTOVQSMiQ`LROQh`Lbcb²z{`XRd`Lb?bcQSb²] IpRiZSQYMMOIntJQ*QBƒAz!QYZYT.TdInV{`}_pQ*ILKb?mÂTktvI
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£&DL£
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F ¤
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ILR
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£&DXw
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‡qE
20 ft
B
A
‘“’”U•|— š D E?F¤
š Ipbc"TONcIpK8›  N?ROMiTPRO`tæTOVQq] RiQSQ*alI P"mÂPN‹`XopRd`L^E‚s`LWNcKo„^,Ip^,QSK&TdM`LalIp"T
zlIpN?KTr˾m N?SQ bcP"M
þr
1 é“F}À&êSé DLÀpÀ&ê é wêSé ¤LÀpÀ&ê Š¤LÀL‡ ILR
‡ ¤LF À é DLÀpÀpÀ 5ÝpÀpÀ&ê ¤LåpÀ.bca 10 ft
10 ft
4 ft
Ax
A ­y
Æ500 lb
‘“’”U•|— š D E?F¤
200 lb
By
ç|Q~ƒ T|MO^±TOVQ2] IpROZYQSMuNcK‚TOVQhPN?ROQSZ~TdN?IpK‚mAN?QSb?PM
þ Ú À
ILR
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ILR
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£&DpD
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5m
A
2m
4m
B
cg
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3m
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A
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A
cg
B
6m
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(200. 9.81)
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