Web application for building ventilation calculator

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Remote (anywhere)
Freelance / Casual

We are in the process of developing a web-based calculator which will allow the user to find the pressures on a building resulting from wind loads and how this will be impacted by the use of ventilation systems. The calculator then works out the cost savings that can be realised by the use of effective ventilation.

The initial engineering design has been completed, and the next stage is to develop the web application around the engineering data. A lot of preliminary work on the design of the web pages has been completed.

Requested by
Robert D.
Joined Oct 2016
Submitted 7 Oct 2016 at 03:12
Expired 2 years ago
Average bid $6,392.06

R-International Trading Co

Hello Robert,

I am Gautam from RITC. We are a typical company with experts from different domains working together as a team for greater good of our customers. We have over 10 yearsโ€™ experience in designing and developing complex software including websites.

I have gone through your requirement and discussed with our team of experts (engineers from different backgrounds including IT).

We came to conclusion that your requirement needs both engineers and IT people.

We would like to know more details about your project before we bid for it.

Our engineers can understand more about your project then they can explain it to our IT people who can design and develop your website exactly as you want it.

Our engineers have experience in understanding concepts like Beaufort scale, shearing force, bending movement, torsional movement, compression, tension, etc.

Hoping for a positive response soon.




Deliver in 15 days
CJ Software Solutions

Hi Robert,

I have plenty of experience in building web based calculators, my most recent project was with My Property Tools, https://www.mypropertytools.com.au/tools/affordability-calculator it's an affordability calculator for potential home buyers. Another is their home loan calculator - https://www.mypropertytools.com.au/tools/home-loan-calculator.

I have also built the Australia's first online robo advice health check calculator for InvestSMART, https://www.investsmart.com.au/portfolio-manager/get-started. Follow through the wizard and you will get your personalised financial health check score for your investment portfolio.

There isn't a lot of information in your descripton for me to give much of an accurate estimate but I have listed my hourly rate.

Regards, Charles

Estimated 1 hour
[Deleted user]

Hi Robert,

I am a web designer & developer operating my own business for the past 5 years. I would be more than happy to assist you in developing your application. I am also completing a degree in mathematics so I'll understand the functionality of the formulas. After seeing the full scope of the project I can give you an estimate of the hours that will be needed.

Estimated 1 hour
Perceptive Mind

Hi Robert,

What you're after sounds straight forward and simple, the quote I've put here is initial and depends on the design but it would cover off what you're after in regards to the equations. Feel free to have a look at my previous work and testimonials on my website: http://perceptivemind.com.au

Kind regards, Nick

Deliver in 10 days
SZI Technology Pty Ltd

Hi Robert.

I am freelance developer based in Sydney. I specialise in developing software for the steel building market in particular portal frame desine and quotation. I have extensive experience working with engineer's in the area of wind loading on portal fram buildings using AS-NZS 1170-2. I have also worked in Europe on similar systems using euro code and British standards. All my work revolves arround working with engineer's to design software products both desktop and web based for my clients all over Australia and New Zealand.

From my understanding you want to calculate the positive and negative internal wind presure in a structure and then be able design an appropriate ventelation system to negate these pressures as much as possible to achive a more cost efective building design. Naturally for a nation wide deployment you would need to consider cyclonic regions (C and D) as well as non cyclonic alregions (A and B) anolg with other factors such as terrain categories, topography and so on.

This is a field where i have worked in for the past 14 years and have a proven track record in terms of completed software products which i can show you.

I have many questions about the project so I would appreciate it if you could contact me on 0424117225 or shazad@szit.net to discuss further. If you require me to sign and NDA prior to any detailed discussions this is not a problem.


Shazad Inayat

Estimated 10 hours

Hi Robert,

I am based in Sydney and it is good to hear that If I can help your application builds,

I have done so many web based project done including WP, custom CMS, insurance calculator and cusotmised web site as well. Use Zend, symfony and laravel mostly.

I do not think it is hard for me and deliver you as quick as possible If, the design works are already done.

Hope I can hear from you to discuss further details.

Pls also check my profile: https://au.linkedin.com/in/songdanny

Deliver in 10 days
anjeko software

Hi Robert, I am freelancer PHP developer with 20+ experience. I can assist you and develop this web database application using PHP/MySQL database to be used for all your future requirements in this calculation algorithm. I developed complex PHP calculation application for financial and sport purposes. Feel free to ask me questions you are considering my bid. Final quote will done after providing full details.

Deliver in 25 days

Hi Robert,

We have team of skilled web application developers who have delivered complex projects. I would like to discuss with you this project. Please add me on skype: harrysathe

Regards Harry

Deliver in 90 days
SDR Soloutions

Its hard to give an exact quote with out knowing the exact requirement. With a little more information I can provide you the estimated hours

Estimated 99 hours
Bode Contagion

Hi Robert,

We have a small set of developers with skills across all relevant disciplines - frontend, backend and database, with a focus on Laravel and all your listed tech. At this early stage, it is impossible to give you a precise quote, but we understand that you not only require a calculator but also a web application that sits around it. Please send us a message where we can discuss your project in greater detail.

Kind regards,


Deliver in 28 days
Whitetower Digital

We've built a calculator for financial companies before as well as projection calculators for Hitachi. We would love to have the opportunity to work on another one with you. We're based in Sydney and would work on the calculator with PHP technologies.

Deliver in 25 days
Blitzo Studio

Hi Robert,

We are Sydney based company and can definitely provide the solution you are after. Our specialisation in mobile,software and web application is something that proves to you we are the right team for this project. If you would likr to discuss further please email us your contact detail and I more than happy to discuss with you the project. Our email is info@blitzo.com.au

Deliver in 15 days

The time and effort depend on the complexity of the project. However, we have a team including 5 year experience working software engineers. Thus, we are confident that we can full-fill your requirement.

Deliver in 45 days

We have a complete team of 22 Staff located on the Gold Coast, QLD. I would need more details to quote this correctly and your expected timeline and start date. We have a lot of experience building custom calculators, frameworks etc.

Deliver in 60 days
Nick Marden Design

Hi Robert,

Sounds like a great project! I'm an experienced freelance web developer, with over 10 years of professional experience. I have a passion for simple & intuitive design and development.

I have built a similar project for a client before. They are a mining engineering company and I built a calculator to work out evaporation rates of water on mine site roads. It was built to include graphs, reporting etc.

The above project along with others can be seen on my portfolio at http://www.nickmarden.com.

I look forward to hearing from you.

Thanks, Nick.

PS - Quote is inclusive of GST

Deliver in 40 days
Blitzm Systems

Hi Robert,

We are software engineers that provide high quality sofware through refined process. We are actively developing our continuous integration, automated testing and deployment processes. Blitzm has recently delivered mobile apps and web applications for engineering companies in the medical and energy monitoring spaces.

We can review your system designs and assist with user experience design if required. We can develop, test, deploy and also manage your hosting and system operations.

Have a look at our website http://blitzm.com.au and please contact us at info@blitzm.com

Deliver in 60 days

Dear Robert,

We have built online calculators for financial and non financial clients.

One of our recent work is http://www.knowyourbones.org.au/. This online calculator gives initial bone health estimate report. This platform was built using HTML5 / Open Source technologies and deployed to Azure Cloud. You can click on Start Assessment and see the quality of work done. We will delivery same for you.

I prefer we work together to come up with estimates and cost. I am based in North Sydney. Happy to discuss in person.

Hear from you soon.

Regards, Babar Ali

Deliver in 90 days

Is there a project brief available so I can review the requirements.

Active Capital IT

Hi Robert,

We've built tools for telecom companies to monitor their and optimise their networks in the past and we should be able to highlight selected projects that are similar to yours. You can check out our site at acit.com or drop me a line at iqbal@acit.com and we can talk about your project. If you're in Sydney we can catch a cup of coffee or we could arrange for a Skype / GotoMeeting session where I want to be able to highlight our capabilities, understand the problems that we're trying to solve and come up with a quick ballpark after which we can agree on how to move forward.

Furthermore we have public liability and professional insurances and we've worked with a diverse range of clients both local and international.

Best Regards,


Last updated 2 years ago