Perhitungan Kuda Kuda

7/24/2019 Perhitungan Kuda Kuda

1/41

PERHITUNGAN GORDING

1 DATA PERENCANAAN

Jarak Gording = 1.22 m

Jarak kuda - kuda = 4 m

Jarak batang tarik (trekstang) = 1.3333333m

Jenis penutup atap = Genteng

Sudut kuda - kuda = 35

2 DAA !"#$%& ' 15.5.2.4*5

+ = 11 kg,m A& AJA

A = 13./ 0m2

= 5.2 0m3

= 1/. 0m3

% = 4/

% = //.2 0m4

3 DATA PEMBEBANAN

eban genteng = 5

(termasuk usuk dan reng)

eban gording = 11 kg,m

Dipakai ' 15.5.2.4*5

4 BEBAN MATI

eban genteng = 1 kg,m

(6arak gording .genteng)

eban Gording = 11 kg,m2kg,m

!enambung (17) = .2 kg,m

/.2 kg,m

5 BEBAN HIDUP

eban peker6a dan a8at (!) = 15 kg

6 BEBAN ANGIN

= 25

9oe:sien angin tekan == .3

9oe:sien angin ;isap = -.4

< tekan = koe tek. angin 6.gordin

= .3

= /.15 kg,m

< ;isap = koe tek. angin 6.gordin

= -.4

o

0m4

kg,m2

>D&

ekanan angin , m2 kg,m2

.2 ? - .4


2/41

= -12.2 kg,m

7 REAKSI PEMBEBANAN ARAH X

a. Akibat Beba Mati

"@ =

= .5 /.2

= 12/.5 kg

ma =

= .125 /.2

= /.5 kg m

b. Akibat Beba Hi!"#

"@ =

= .5 15

= 245.5 kg

ma =

= .25 15

= .4 kg m

0. Akibat Beba A$i

"@ =

= .5 /.15

= 1.3 kg

ma =

= .125 /.15

= 1.3 kg m

% REAKSI PEMBEBANAN ARAH &

a. Akibat Beba Mati

"@ =

= .5 /.2

= 3.2 kg

ma =

= .125 /.2

= 1./ kg m

b. Akibat Beba Hi!"#

"@ =

= .5 15 = 5.3 kg

ma =

= .25 15

= 2. kg m

' KOMBINASI PEMBEBANAN

= 1.2 >D& B 1.

1,2 >D&

'os ? &

1, >D&

Sin ? &2

1,2 >&&

'os ? &

1,4 >&&

Sin ? &

1,2 < tekan &

1, < tekan &2

1,2 >D&

Sin ? &,3

1, >D&

Sin ? &,32

1,2 >&&

Sin ? &,3

1,4 >&&

Sin ? &,3


3/41

= 1/.3 B 13.

= 21.323 kg m

= 21323.54 C mm

= 1.2 >D& B 1.

= 12.11 B 45.

= 5. kg m

= 5.4/2 C mm

1( KONTRO) TEGANGAN

PPBBi 1'%4

= 2132.354

5.2

= 4.

= /3.3

= /3.3 E i6in

11 KONTRO) )ENDUTAN

Be*!a+a*ka PPBBi 1'%4, Ha- 1(6 Pa+a- 15.1 A/at 1

% = 21 pa

1,25.& = 1. 0m

+ =

= 4./ kg,m

= .4/ kg,0m

+ =

= 45.4 kg,m= .454 kg,0m

! =

= 122./ kg

= 1.22/ kg,0m

! =

= . kg= . kg,0m

Me$0it"$ -e!"ta $*!i$

= 5 B 134 % . % 4 % . %

= 5 .4/ 25B

34 21 4/

=.13

14152.32B

12/

kg,0m2

ma(i6in) =

>D&

'os ?

>D&

Sin ?

>&&

'os ?

>&&

Sin ?

+ . &FPx . L


4/41

= .13 1.1 B

= .211 B .1

= .21 0m

= 5 B 134 % . % 4 % . %

= 5 .454 533333333.33333B

34 21 //.2

=.13

345/.434/1B

232

= .13 1.1 B

= .242 B .1

= .24 0m

+e0i$$a 2

= .45 B .

= .15

= .32 0m

aka 2

= .32 0m E :6in = 1.

+ . &,3F ! . &,3

= HI B I


5/41

PPIUG 1'%3

TABE) BAA

B

B PPBBi 1'%4

PPIUG 1'%3

)RD 0a- 4

25 1.22

25 1.22

x

y

px


6/41

Akibat Beba Mati

.1/ 4

.54 1

.1/ 4

.54 4

4

1

Akibat Beba Mati

.54 1.3333333

.54 1.

.54 1.3333333

.54 1.3333333

>&& B . > 1 U =

qy

4.5 mM

D

Dx ma

41,57

2 Mx m

15,59

22.25

qx

4.5 mM

D

Dx

14

2 M

2

22.25

p

yx


7/41

B 14.4 2 U =

3 U =

U =

>&& 4 U =

5 U =

U =

B 5.4/

1/.

B 2/2./3

= 1 HARUS DI CEK OK

1 1.22/ 4

4 21 4/

.235/.251432

12/

kg,0m2

kg,0m215.00


8/41

.2 .

1 . 21333333.3333333

4 21 //.2

.21354445./32335

232

.2 .1

HARUS DI CEK OK0m


9/41


10/41

Akibat Beba Hi!"#

Akibat Beba Hi!"# Akibat Be

Kombinasi beban Arah x Arah y

1.4 D = 127.196311 14.13

=

g

x =

kgm

4.5

py

M

D

0.17

0.34

0.68 p

Mpx max =

17,02 kgm

Dpx max =

34,05 kg

max =

,31 kg

max =

4,78 kgm

4.5

px

M

D

0.51

2.05

4,10 p

Mpx max =

51,07 kgm

Dpx max =

200,48 kg


11/41

1.2 D + 0.5 L = 152.043642 26.4533452

1.2 D + 1.6 L = 246.683754 58.0000492

1.2 D + 1.6 L + 0.8 = 261.323754 58.0000492

1.2 D + 1.3 + 0.5 L = 175.833642 26.4533452

0.9 D + 1.3 = 193.616462 46.3679191

0.9 D - 1.3 = -30.0783483 -28.1970176

tegangan tekan max =-637,38 kg/cm2

7.50 tegangan tarik max =

+637,38 kg/cm2


12/41


13/41


14/41

a A$i

qangin tiup

4.5 mM

D

Dx tiup max

= 34,05 kg

2 Mx tiup max =

17,02 kgm

22,42


15/41


16/41


17/41

PERHITUNGAN BATANG TARIK TREKSTANG8

1 REAKSI PEMBEBANAN KE ARAH SUMBU X

"@ beban mati = 12/.5 kg

"@ beban ;idup = 245.5 kg

"@ beban angin = 1.3 kg B

"@t = 35.5 kg

9 KOMBINASI PEMBEBANAN

" = 1.2 >D& B 1. >&& B . >

= 155. B 3/3.1/ B 14.4

= 53.54 kg

3 DIMENSI TREKSTANG

= "

A

A = "

= 35.5

14

= .2

d = 4 A

= 4 .23.14

= .5 0m bu8atkan

K . 0m = mm

0m2

A = 1,4 d2


18/41


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20/41


21/41

1 Pebebaa t*ek+ta$

!ma = + .& B ! n =

n

dengan

+ = beban merata ara; & = 6arak antar kuda - kuda

n = 6um8a; pembagian trekstang

! = beban ;idup

maka

!ma = + .& B !

n

= 25/.51 B .4

3

= .524 B .4

= 12.54 kg

2 Dimensi trekstang

,

= 1.22 , 3

= .4

= ar0an .41

= 33.2

= .55 = .31

aka " = n . !ma

= 3 12.54

.55

= /2/./5 kg

&uas dimensi trekstang

= 14

A = "

= /2/.//

14

= .4

d = 4 A

= ./ dibu8atkan

tan ? =

?o

sin ? 0os ?

sin ?

= " , A

?

A = 1,4 d2


22/41

= 1.( : ; 1(


23/41


24/41


25/41

3 b;


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28/41


29/41

PERHITUNGAN KUDA < KUDA

1 DATA PEMBEBANAN

entang kuda2 = 1.5 m

Jarak kuda2 (&k) = 4 m

Jarak gording = 2 m

Sudut kemiringan atap = 35

!enutup atap = Genteng

erat penutup atap = 5 PPIUG 1'%3

eban gording = 11 kg,m TABE) BAA

B37

$ = 24 pa SNI 9((9

$u = 3 pa

= 21

9 MENGHITUNG BEBAN

BEBAN MATI

erat atap = 4 kg

(+ &k & gording)

erat gording = 44 kg

(+ &k) B

444 kg

!enambung (17) = 44.4 kg B SNI 9((9

+t 4.4 kg

. ati ara; = 4. kg

. ati ara; = 2.13 kg

BEBAN HIDUP

eban peker6a L a8at = 1 kg

. Midup ara; = 1./2 kg

. Midup ara; = 5.3 kg

BEBAN ANGIN

= 25 )RD 0a- 4

9oe:sien angin tekan =

= .3

9oe:sien angin ;isap = -.4

< tekan = koe tek. angin &k &.gording

= .3 25

o

kg,m2

kg,0m2

ekanan angin , m2 kg,m2

.2 ? - .4


30/41

= kg

< ;isap = koe tek. angin &k &.gording

= -.4 25

= - kg

. Angin ara; = 4/.15 kg

. Angin ara; = 34.41 kg

AC A"AM N A"AM O Kbia+i #ebebaa

. A% 4. 2.13 Ara; = 5.4 =

. M%DP! 1./2 5.3 Ara; = 455.4 =

. ACG%C 4/.15 34.41

Pe*0it"$a #a=a$ beta$ k"!a < k"!a

Gambar Auto0ad

Tabe- #a=a$ bata$ k"!a < k"!a

N. A 8 H 8 > 8 D 8

1 1. 1.5 .5 2.12

2 1. 1.5 1.5 2.

3 1. 1.5 2.25 2.

4 1. 1.5 1.5 2.12

5 1. 1.5 .5

1. 1.5

Co atang arik atang ekan

A1


31/41

A2

A3

A4

A5

A

M1

M2M3

M4

M5

M

Q1

Q2

Q3

Q4

Q5

D1D2

D3

D4


32/41

4 2


33/41

4 2

kg

4 kg


34/41


35/41


36/41


37/41


38/41


39/41


40/41


41/41

Be*at +e!i*i k"!a < k"!a !itak+i* ) ? 5 8

6arak kuda2 ma = 2 kg

= 54.25 kg

= 2.13 kg

Be*at +e!i*i #e"t"# ata# $ete$8

simpu8 tenga; menerima beban

= 4 kg

simpu8 pun0ak menerima beban

= 4/ kg

simpu8 tepi menerima beban

= 2 kg

Beba akibat $*!i$

tiap simpu8 menerima beban= 44

tiap simpu8 menerima beban

=

Beba be*$"a

tiap simpu8 menerima beban

= 1 kg

Beba tia# +i#"- akibat beba ati !a be*$"a

!2 = !3 = !5 = !

5/.25 kg = kg

!1 = !

415.13 kg = 45 kg

!4

.25 kg = kg

tiap simpu8 tenga;menerima beban

tiap simpu8 tepimenerima beban

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Perhitungan Kuda Kuda