Correction for Prestress Final Project problems (will always be updated) :
1. Es (for prestressing tendon) = 186 GPa or 186.000 MPa
2. Use 4 (four) girders for main bridge design, otherwise each girder wouldn't support the loads

You can download my presentation video from 4 shared through this link : http://www.4shared.com/file/uHFSxrzc/Presentasi_Ariel.html
The video is better than the streaming ones.

Final Project release,

I am gladly presenting to you pre-stress final project which will requires all of your understanding about the design process in service and ultimate condition, checking stress, optimize the design, layout the cable, technical drawing, and a lot more.
The problem is uploaded at http://www.4shared.com/office/IsqJcqhT/Soal_TUBES_SI_4215_sem_II_2011.html, you can download it anytime and anywhere.
Please feel free to discuss the problem in this blog or you can discuss it in class.

Good luck and do your best.
Ariel A.Suselo

Great presentation today,

Good job for all the members of SEAMOLEC recording team, coordinators, and participants.
The presentation for Beasiswa Unggulan for Fast Track Program went very well today. Both of offline and online presentation brought a lot of new point of views in our science and technology development. Through this event, I am motivated to be more innovative in my on going research. The research surely must provide answer and accommodate real problems in field. Those answer and accommodation should be applied effectively and efficiently.
A lot of our videos are uploaded and can be observed directly from http://justin.tv/seamolec_sms2. Mine can be seen in http://justin.tv/seamolec_sms2/b/312998015. (The presentation is in Indonesian)
In my presentation, I mention the research progress I've done until now. By this post and through my presentation video, I hereby invite all of you, especially who majoring at Civil Engineering, to closely observed my presentation and discuss it in details with me.
Each of your idea will substantially important for my research and I will gladly respond for each of your idea.
It's my first streaming video, I hope you all will understand why I obviously nervous in my presentation, but I'm sure that I am well prepared and definitely good looking in that suit :).

It's good to know a better technology in information media.

Ariel A.Suselo

First assignment released digitally,

I am gladly presenting to you, especially for course's attendants, third assignment problems and bonus problems. This assignment was designed mainly to calculate losses in prestressing tendon, checking stresses, Magnel optimization curve, and its concept in order to get full comprehension in simple serviceability design.
Both of these problems can be downloaded through links below:
http://www.4shared.com/office/eCODoWOY/TUGAS_KECIL_3-12.html
and
http://www.4shared.com/office/Tnc77eW9/Pertanyaan_Bonus_Tugas_3.html
Password may be needed to be able to download it,
Password : prestress
Please feel free to discuss the problems in this blog or weekly assistance meeting on next Friday.

Good luck and try to do it by yourself.

Ariel A. Suselo

Second Entry,
I am getting used to this...

Firstly, I want to share my research progress this week. Last week, I've consulted about my research proposal. My preliminary design had been finished, but need to be checked with several items in our building codes (SNI). These items include details in reinforcement, modals involvement in analysis, and specific requirements for wall design which can resist severe earthquake excitation. So, my next 2 weeks schedule is about completing both of analysis and design details.

Meanwhile, I become an assistant for undergraduate course namely "Perilaku Struktur Beton Prategang" (Prestressed Concrete Behavior). This course mainly discusses about the design and behavior of concrete when prestress force is applied in order to resist service loads (both of dead and live load). This technology is more advance that conventional method which the tensile forces/stresses is not independently resisted by concrete and reinforcement, but also the prestressing tendon/steel.

I've been told that it is a good idea to post this course assistance process to add something new in my blog. This process include assignment question bank and some discussion about course's problems.

So, through this entry, I welcome all of this course's attendants to freely discuss this course problems.
I am thinking about attaching our assignment problem in this blog to introduce my new blog and research.

This is it,
Ariel A. Suselo

First Blog Entry - Introduction

I am Rookie in Blogging World,

Thanks to Beasiswa Unggulan from DIKTI  so that I can learn how to share my ideas digitally via this blog.
In order to fulfill my mandatory responsibility as one of scholarship recipient, I have to report my daily or weekly activities related to my research for my thesis completion.

Actually, this first entry is considered to be late because the research was initially started few weeks ago, but I'll try to explain my research as clear as possible.

My major is Civil Engineering (ITB) and my specialty is at structural engineering. My first research is about modelling and analyzing building under an earthquake excitation. It is compiled as my Final Project in my Undergraduate Program. I think my self lucky to get an expert to be my mentor in my research. He is known as one of Building Trustee Committee in Jakarta. Recently, he is also involved in bridge collapse in Kutai Kartanegara as one of experts. His name is known as Prof. Bambang Budiono.
My Final Project was focused at analyze methods for High Rise Building under earthquake excitation. Building structure was modeled mathematically in a certain software. This model is analyzed with a new method in Indonesia namely Modal Pushover Analysis (MPA). This method is pioneered by Anil K. Chopra, a Professor in UC Berkeley. This method needs additional procedures which differentiate from existing procedure. These additional procedures include the use of governing modals (model's dynamic characteristic), response combination, and its comparison with the most "exact" analyzing method known as Non Linear Response History Analysis (NL RHA). This "exact" analyzing method is considered exact because it uses non linearity in material and elements behavior and earthquake excitation history to be the most considerable dynamic load with high statistic uncertainty.

Apparently, my next research was a development from my Final Project research, but it is focused in non linearity behavior in Wall Element. My next research will be mainly used in modelling wall behavior in building under lateral load (include earthquake forces). Until this week, my research is at preliminary design for building model with wall element as one of lateral resisting element. The design is still at elastic region.   This design will be analyzed with performance based method namely pushover analysis to find the non linear behavior performance, especially in the wall element.

I am interested to bring my model into experimental stage for my future research.

This is it for my first entry...
Ariel A. Suselo
(Rank : Rookie)