DoWT-B Quick Start Guide
DoWT-B Quick Start Guide
DoWT-B Quick Start Guide
February 2010
The Designing out Waste Tool for Buildings (DoWT-B) is a freely accessible online resource that will help you to: identify opportunities to design out waste in buildings projects; record design solutions pursued to reduce material consumption or wastage; calculate the impact of these solutions, including savings in project costs, waste to landfill and embodied carbon; compare the performance of different projects / alternative designs; and provide an indicative waste forecast for your Site Waste Management Plan (SWMP).
The Tool is available at http://nwtool.wrap.org.uk/, and should be used in conjunction with WRAPs Designing out Waste Guide: a Design Team Guide for Buildings, available at www.wrap.org.uk/designingoutwaste. The Tool can be used iteratively during outline design, as different options will become relevant as the design is developed. An indicative waste forecast requires only outline project data and can be completed in 1020 minutes. Subsequent analysis of design solutions and their impacts will require more input from the design team, depending on project size. This time and effort can result in significant financial savings and environmental benefits. Users: When: Inputs: Cost: Benefits: Design team architect RIBA stage A to C Basic project details (GIFA etc) Design team thinking on options to design out waste and their effects Short amount of time needed to complete analysis Tool is free to use Identify top opportunities for waste reduction and cost saving at an early stage enabling design team to focus effort Provide input for an outline Site Waste Management Plan Include potential savings in tender specification so that tender prices can reflect design decisions Use results to demonstrate Corporate Responsibility
The 4 steps below explain how to use the Designing out Waste Tool for Buildings, including a diagram to illustrate the user journey. If you would like more detailed guidance on using the Tool, you can download the DoWT-B Full User Guide from the Download options menu in the Tool.
1. Getting started
Create an account
You can use your existing Net Waste Tool login details if you have an account. Otherwise, complete the basic registration form on the Login screen at http://nwtool.wrap.org.uk/. You will receive an auto-generated email welcoming you to the Tool. You can begin using the Tool immediately after registering.
View/edit assumptions
The Tool will now take you to the View/edit assumptions screen. The Tool has applied a default specification to your project, based on the project and building type. If you select a mixed use project, the Tool will assume different finishes to suit each type of use. You can change the specification for any element. The Tool can only apply one specification per element (other than for services). When the project specification has been developed in more detail, you may choose to generate a more accurate waste forecast using the Net Waste Tool.
Project performance
If you decide to select solutions to reduce material consumption and/or waste in the design, the next screen Solutions & impacts allows you record these solutions and their impacts on project costs and waste to landfill. The Solutions & impacts screen provides the following functions: Project log the table at the top of the screen lists the building elements, and shows their estimated material consumption and wastage. The table also provides a record of the number of design solutions and impacts that have been recorded for each element. Performance the left-hand section of the screen shows the material consumption and wastage estimates by material type. Solutions this section can be used to record design solutions. You should choose the correct element and design principle that relate to your solution. All of the solutions for the selected element will be recorded in the table below. Impacts after recording each design solution, you can enter the impacts as prompted by the Tool. The impacts you record will be different for each design principle; for example, solutions recorded under Design for Reuse and Recovery will require you to enter your proposed quantity of reclaimed material to be for that element.
Project comparison
If you would like to compare the performance of different designs or specifications, you can generate a Project Comparison report. To do this, you first need to create different projects that you can compare. You may choose to do this by creating new projects from scratch, or (more likely) by creating alternative versions of an existing project using the Use as Template function on the My Projects screen. You can then select the projects you want to compare and click on Compare Projects Report.
The DoWT-B and the Net Waste Tool have a common landing page and utilise the same registration details. However, projects cannot be transferred from one tool to another. The Net Waste Tool is designed to be used once project quantities are available, and therefore requires more input data than the DoWT-B. Waste forecast details from the DoWT-B and the Net Waste Tool cannot be directly generated as a Site Waste Management Plan; however, results from spreadsheet reports can be cut and pasted into the project Site Waste Management Plan.
4. User journey
Register/login
Disclaimer: WRAP, Cyril Sweett and Solstice Associates believe the content of this guide and the associated Tool to be correct as at the date of writing. However, factors such as prices, wastage rates and levels of recycled content are subject to change and users of the Tool should check with their suppliers to confirm the current situation. The guide and Tool do not claim to be exhaustive, nor do they claim to cover all relevant products and specifications available on the market. While steps have been taken to ensure accuracy, WRAP cannot accept responsibility or be held liable to any person for any loss or damage arising out of or in connection with this information being inaccurate, incomplete or misleading. It is the responsibility of the potential user of a material or product to consult with the supplier or manufacturer and ascertain whether a particular product will satisfy their specific requirements. The listing or featuring of a particular product or company does not constitute an endorsement by WRAP and WRAP cannot guarantee the performance of individual products or materials. For more detail, please refer to WRAPs Terms & Conditions on its web site: www.wrap.org.uk.