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The Types of Bridges

the main types of bridges with details

Bridges are essential when it comes to passing all kind of gaps/spans for civil engineers so the types of bridges as well. When we have discussed any kind and any types of bridges there can be complications especially with the less experienced civil engineers, even I had confusions in the past, moreover if English is not your native language it can be more confusing. These days I am preparing some documentation about my professional engineering career and I have found these drawings. They are showing clearly the types of the bridges in the simplest way.

The drawing above shows the 4 main types of bridges, even LOADs, SUPPORT and COMPRESSION Points.

The 4 Main Types of Bridges:

  1. Beam Bridges: This type of bridges are mostly chosen also cost effective based on the performance. Can be built in different spans based on the design. Especially chosen for the ease of construction.
  2. Truss Bridges: You will remember them from the western movies, the railroad bridges … 🙂 But be careful about the maintenance part.
  3.  Arch Bridges: Visually my favourite but the foundations need to be firm. Commonly used in the old world by the Roman Empire especially for water transportation, I have seen marvellous stone arch bridges.
  4. Suspension Bridges: If you have to pass long spans this is the type you are going to use but not cost friendly as beam bridges.

The drawing below shows more detailed bridges like floating bridges, bascule bridges and etc.

My main purpose is to make a small base for engineers looking for types of the bridges, at least having an idea about them.

We can use more detailed drawings and bridges but my aim is to keep the list as simple and less confusing as it can be.

The List of Bridges

2nd Dispute Boards Seminar

Attend to a Dispute Board Hearing

Do you want to attend a Dispute Board Hearing!. Alone, the Dispute Adjudication Boards (DABs) term is frightening the construction professionals…. But now you have a chance to attend to a mock dispute board hearing. 

one of my projects there was millions of dollars (literally) disputed amount that was basically the result of the different point of views to the works executed and of course interpretation of the Contract. But at the end, millions of dollars were on the table waiting for a resolution. I was telling myself “just the total amount of the basic interest rate and man hours spend for the disputed works could start and finish a middle scale construction project”. As a result, I witnessed myself how costly and time-consuming can be for those kinds of unresolvable disputes. 

Last years, I got a chance to attend a training by UAE Society of Engineers  called “Arbitration in Construction under FIDIC Contracts”. In the training, I learnt the fundamentals about disputes, arbitration, boards, and etc.. Moreover main differences between Arbitration and Dispute Adjudication.  But I was curious to see a live Dispute Board Hearing after the training…

Couple of days before I got an invitation mail from Dispute Boards MENA which was calling (me) for 2nd Dispute Borads Mena Seminar. At the end, I will have the chance to attend a Dispute Board Hearing even it is mock. If I would stay in Emirates up to meeting date which I don’t know yet. But if I am around,  I will definitely attend Mock Dispute Board Hearing. 

Besides, as indicated in the programme one-hour Networking will be another advantage of the day for you.

Part of the invitation mail which is self-explanatory: 

The seminar will consist of an introduction to DABs followed by a mock dispute board hearing during where listed DB MENA practitioners will take on the roles of the Contractor, the Engineer and the DAB. Specifically, the Contractor will present his case to the DAB and the Engineer will respond on behalf of the Employer. Having heard both cases, the DAB will give a decision and share the reasons for reaching it.

Details for the Mock Dispute Board Hearing: 

Date: Wednesday 13th April 2016
Time:
6:30pm – 7:00pm – Networking and Refreshments
7:00pm – 8:00pm – Mock DAB Hearing
8:00pm – 8:30pm – Q&A
Venue: Conference Centre, Block 1, Dubai Knowledge Village. A car park is located directly across the road from the Conference Centre for those driving to the venue.
Presenting the Mock DAB Hearing:
Representing the Contractor: Andy Hewitt
Representing the Engineer: Gordon Clark
Representing the DAB: TBA
Fees: Dispute Boards MENA is a non-profit initiative. We, therefore, ask for a fee of AED 100 per person to cover the costs of running the event.

For more information website of the Dispute Boards MENA: http://www.disputeboardsmena.com/

For Registering the event: https://www.eventbrite.com/e/2nd-dispute-boards-mena-seminar-how-dispute-boards-save-time-and-money-on-construction-projects-tickets-21600080422

Cloud Based Data Preservation System for Construction Sites

NAS Drive for Construction Flowchart
NAS Drive for Construction Flowchart

The real topic is Cloud  Based Data Preservation System for small and medium size construction sites also I should admit that I have leaded this system to be set-up at my previous job with our IT Guy(s). System have served very well with a short learning curve and absolutely no data have been lost.
This is the introduction report for the system for Higher Management so there is no how-to on technology detailed it is brief summary.
If you want to learn more I will try to reply your questions;

INTRODUCTION
Computers are part of our work environment. But in the world an issue is getting importance day by day; Data preservation and data management. At this article it is gonna be challenge and try to resolve the data preservation and management with basics of cloud storage
WHAT IS CLOUD STORAGE FOR THIS ARTICLE AND WHY
The general definition of cloud storage is; “Cloud storage is a model of networked online storage where data is stored in virtual pools of storage which are generally hosted by third parties.” For our article cloud storage is networking your storage both with Site offices and main office and also with headquarters of SOMA.
In over all the world at site offices especially in road construction internet connection would be problem and unstable internet connection with the effect of online users at the same time effects data transition from/to the main office negative.So for the local data storage devices and synchronization between sites we can work on webular datas as local data or vice-verse.
The main advantage of the Cloud storage is providing users with immediate access to a broad range of resources infrastructure of other branch organization via a web service and use the data like local in a budget solution.
SYSTEM COMPONENTS AND DEFINITIONS
Network-attached storage (NAS)
NAS is file-level computer data storage connected to a computer network providing data access to heterogeneous clients. NAS not only operates as a file server, but is specialized for this task either by its hardware, software, or configuration of those elements. NAS is often made as a computer appliance – a specialized computer built from the ground up for storing and serving files – rather than simply a general purpose computer being used for the role.
The NAS drive that will be selected shall have Raid property and has minimum two hard drives backing up each other simultaneously and the capacity depends on the targeted documentation system.
Network Connected computers with Internet Connection
SYSTEM STRUCTURE
In general all departments computers are attached to the central network as well as NAS drives for all the places. The sync. Directories shall be selected from the selected computers and sync. Settings will be done by IT personnel.
Also at the general view the NAS drives will be connected with each other and transmit data with each other.
System shall be designed as individual clouds. Site branch offices and Main site office will have its own NAS drive that is pre-programmed by the IT technician(s) of company based on the flowchart above.
For the Main HQ even if it is figured as a NAS drive is attached to the network it can be on a server manner or another way that IT Department rely on.

How to Build Speed Humps

Speed Hump construction

I should admit that I am a bit obsessed with speed humps, especially as a civil engineer how to build speed humps which I see a lot of speed humps which are just built without any projection nor calculation; some too short, some too high and some with so short intervals that I saw three speed humps built side by side which you feel you are on the off road and etc.; But in total making me annoying.

So I tried to gather various sources together and prepare a reference; here is how to build speed humps by specifications and standards; Read More

Engineering in the Ancient World

Engineering in the Ancient World Book Cover1Lets talk about the ancient world and especially “Engineering in the Ancient World” through a book named as same as the topic which I have read recently which have enlightened me about some topics especially hydraulic engineering.

Especially the topic “Water supplies and engineering” was my favorite as it answered many questions in my mind about engineering in ancient times. For example the explanation of how they bored water tunnels from different locations and connecting each nearly without any Read More

List of Turkish Technical Consultancy Companies

For years I am working with international projects with multinational teams/companies. Some of the projects I stepped into from the scratch and realized that the companies have issues in a new market/country as to build up team, collaboration with local laws – legislation and also codes, specifications, standards and etc.

Besides that presently in construction sector if you are at the client part, it will be needed for a technical consultant for sure. What I observed is; as the consulting business start to boom in the industry there started to be established lots of new consultancy firms but lots of them do not have a background for specializing the field of the business. As a result; reliable consultant is a must for my point of view and hard to locate in the market especially in 3rd world countries…

For the foreign companies which have project(s) in Turkey it is more critical to make the right choice that would affect all the project’s success so I wanted to share the List of Turkish Technical Consultancy Companies as below.

The list is generated due to the Association of Turkish Consulting Engineers and Architects (ATCEA) web site which seems the most reliable source.

FIDIC Silver Book & FIDIC Gold Book

FIDIC SIlver Book & FIDIC Gold Book

Within the EPC/Turnkey Based projects FIDIC Silver Book will be your guide.

As my last two projects were EPC based and the last one is PPP (Public-Private Partnership) Infrastructure-Highway project within a multinational joint venture private partnership side on the other hand and if you have in the same kind of project (These days most of the Gulf projects based on PPP) you will see that your project is differentiated between sides of the projects like as below.

PPP —> PVT – Authority —> PVT – EPC Contractor –> EPC Contractor – Subcontractors ( Design & Execution)

That  kind of structures could be really tough as a result of different needs of the parties in the different phases of the project and for this kind of  situations New FIDIC DBO (aka FIDIC Gold Book) could be your solution.

FIDIC DBO Similarities with other FIDIC Contracts

FIDIC DBO adopts the same format of existing FIDIC contracts (RED,Yellow, Silver, White Books) and further retains the style and most of the common definitions, paragraphs and structures that make FIDIC unique.
It’s function is found in clause 9 entitled ‘Design – Build’ which specially provides for necessary elements to administrate the design and build component.
New definitions specific to DBO projects have been included in the new form.
As an example; the definition of the ‘License Agreement’ to regulate the operation component of the agreement and corresponding authority of the Contractor. Another noteworthy definition is that of ‘Cost plus Profit’, although FIDIC provides for such a definition, we suspect that in its practical application, we would define parties amending such definitions to account for project specific definitions and exhaustive itemisation of the costs component to avoid doubt or miscommunication deficiencies.  Read More

FIDIC Red Book

Red Book

After a short break, lets continue with the FIDIC Guidelines. I got mails requesting the rainbow books for share.

Newbies of FIDIC, for a general overview please refer my previous post titled; FIDIC.

Our first Book is FIDIC Red Book, Conditions of Contract for Construction for Building and Engineering Works Designed by the Employer.

Below you can read FIDIC Red Book full version’s copy.

You can also buy FIDIC Red Book directly from FIDIC web site Read More

Engineering Highlights from the London Olympics

London Olympic Stadium

Olympic Games 2012 – London ended yesterday after the closing ceremony. There were many discussions on medals, countries, etc.

But another issue was the engineering highlights from the London Olympics and of course the civil engineering side of the games; Phases through design, plan & built, how they will manage, what is the plans after all.

I noticed an article on the “Scientific American” web site that tries to summarize London Olympic Games Buildings. As they mentioned within the slideshow, I want to repeat the question; “hosting the Olympic Games changes a city–even a metropolis as big and ancient as London”
My answer is yes it will change for London.

Finally, as a citizen of a long runner Olympic Games Host Nominee country we should have our lessons learned from London Olympics on our behalf. About 10 years ago we built an Olympic Stadium in Istanbul – Turkey but as a result of many mistakes(engineering[wind control], location, transportation, etc.) it is still idle after some disappointing efforts.

For A Tour of Engineering Highlights from the London Olympics [Slide Show] please click here. http://www.scientificamerican.com/slideshow.cfm?id=tour-engineering-highlights-london-olympics