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 Achmad Rizki Hidayatullah (1441320088)

Bayu Pratama (1441320100)

Hidayatur Rahmatillah Arifin (1441320119)

Nurul Intan Munawarah (1441320007)

KELOMPOK 1

STRUKTUR RANGKABATANG

(METODE RITTER)

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Contoh Soal Tentukanlah besar

gaya batang (metodekestibu) akibat bebanyang dipikul struktur

tersebut

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∑MG = 0-P ! " # $%& ! " ' P" ! = 0

- ! " # " $%& ' 0 ! = 0

$%& = = "* k+

∑M% = 0

P" ! # P* ! " ' $G& ! " = 0

0 ! # , ! " - " $G& = 0

$G& = = k+

 

PENYELESAIAN

LIKETHI

Men/ari $eaksi

sin = = 01202

/os = = 01202

 

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Potongan a-a 

S* sin ! # $%& ! * = 0

S* ! 01202 ! # = 0

S* = -1"4 k+ ( Tekan)

∑M5 = 0-S ! * (/os # sin ) - $

= 0-S (01202 # 01202) ' "*

-1,, S = "*

S = -1"4 k+ ( Tekan)

∑MC = 0

-S* ! * ' S ! sin ! = 0

-* S* # 1"4 ! 01202 !

S* =S = "" k+ Tarik

 

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Potongan b-b- * ! ' " ! 0-""1 ' S" ! 1,, =

S" = -1"4 k+ ( Tekan

∑M3 = 0S" ! * ' P ! * ' S" ! sin

* S" ' ! * # 1",

= 0S" = = -,12 k+ ( Tek

∑M5 = 0

-P ! * ' S, ! * (/os #

S" ! * = 0

- ! * ' S, ! * (1,,) #

* = 0= = -

 

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Potongan c-c∑M6 = 0

-P ! # $%& ! ' S, ! *

- ! # "* ! ' *S, =

S, = = 0 k+ ( Tarik)

∑MC = 0

-S4 ! * (/os # sin ) '

= 0

-S4 (1,,) ' 0 = 0S4 = = -2102" k+ ( Teka

 

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Potongan d-d∑M7 = 0

P* ! * ' S ! * ' $G& ! * =

, ' S ' = 0

S = -4 k+ ( Tekan)

∑M8 = 0

S, ! * # S ! * (/os #

= 0

0 # S (1,,) = 0S = -2102" k+ ( Tekan)

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Potongan e-e-  ! ' 2 ! P* ! * = 0

4 ! S2 (1,,) ' , = 0

S2 = = -1*, k+ ( Teka

∑MG = 0-S ! - S4 ! * ' S2 ! !

04 ! - S4 ! * # 1*, !

= 0

S4 = = 1 k+ ( Tar ∑M8 = 0

S4 ! * # S ! * (/os #

0

1 # S (1,,) = 0= -

 

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Potongan f-f∑MG = 0

-S4 ! * ' S ! *(/os # s

-1 ' S (1,,) = 0

S = -*1,*4 k+ ( Tekan)

∑M9 = 0

$G& ! * # S0 ! * (/os #

0 # S0 (1,,) = 0

S0 = -*1,*2 k+ ( Tekan

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Nomer batang Besar gaya batang (N)

 Tarik (#) Tekan (-)

S! - -1"4

S" - -1"4

S# - -1"4

S$ - -14

S% - -2102"

S& - -2102"

S' - -1*,

S - -*1,*4

S - -*1,*4

S!* - -*1,*2

S!! - -4

S!" - -,12

S!# ""1 -

S!$ 0 -

S!% 1 -

 

 TABEL KESIMPULAN

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KELOM