Momen Sekunder Kolom Bergoyang (sway)

Pada kenyataannya elemen kolom yang mengalami gaya lateral (gempa,angin) akan mengalami pembesaran momen akibat defleksi lateral. Besarnya momen tambahan merupakan funsi dari beban gravitasi (P) dan defleksi lateral (delta), perilaku struktural tersebut biasa disebut dengan P-delta efek yang merupakan pengaruh global portal kolom. Besarnya defleksi lateral dilakukan secara bertahap dan berulang/iterasi.

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  selengkapnya dapat dilihat/download di dokumen (pdf) berikut : momen-sekunder-kolom-tunggal.pdf

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history of a boring town (maybe)

Cirebon (burning) City

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cofee break+reading[at]bookstore

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kampung-ku (kel. harjamukti)

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salam kangge Ibu, ntos sare nya wengi eiu.

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Dear brothers [go 'n jo] :) did you knows where's home?

satellite photos are taken from GoogleMaps, 2007
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thanks, rasanya seperti terbang kemarin (Sumatera-Jawa)

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the influence voices (1999-unknown)

 

        Metamorphosis - Ray Cappo,1995

Born selfish and ignorant
And my school gave me knowledge
But never any wisdom

And in addition the television programmed my brain
Through it's constant repetition
Misdirected infected with mundane roles and goals and heroes
And althought life really has purpose
I wasted my youth in a social circus

Told what is best for me
But I've seen their destiny
Our leaders ignominy
Reconfirm my concern to rearrange and change my life
I'll vowI'll vow right here
And now no more time wasting just edification purification
We can direct our future
This life, this life has no meaning
Unless we grow

I know there's no use for all this screaming
Unless we grow

Born foolish dull and shelf absorbed
But my life's dedicated to reformation and education
In a nation that thinks great pleasure is a Disney vacation
I never fit in to their system

I couldn't understand people
Wasting their time with so called love
And drugs and occupations
While outside the window is a crumbling nation
So I searched for sincerity and lost popularity
Well what do they want from me?
If I lost friends they never were my friends at all!
To find the real me through introspection

And austerity is my life's mission my ambition
I've got a vision to change my destiny
Things don't change - we must change

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Model Tumpuan Rangka Batang dan Pengaruhnya

Rangka Batang beserta portal 2D sederhana berikut,

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 ada beberapa pemodelan yg ditinjau yaitu:

• Simple supported (hinged-rolled)


• Simple supported (both hinged)


• Elastic stiffness (w/o column) Ktv,Kth


• Column supported (elastic foundation, Kt&Kr)

  Selengkapnya dapat dilihat/download : tinjauan-bebarapa-pemodelan-rangka-batang.pdf

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Susunan Beban Hidup untuk Penentuan Momen Rencana

Dalam peraturan perencanaan struktur gedung beton bertulang perlu beberapa peninjauan susunan beban hidup (Live Load Pattern) untuk menentukan momen rencana, Md (envelopes) hal ini perlu untuk dapat memastikan struktur aman dalam masa pakai bangunan. Akan ditinjaua portal bidang (sub-structuring) dengan asumsi tumpuan pada ujung kolom atas dan bawah adalah jepit (fixed), ditentukan bentang dan tinggi seperti diperlihatkan gambar.

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   Selengkapnya dapat dilihat/download di dokumen (pdf) berikut : tinjauan-susunan-beban-hidup.pdf

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