Draft
In the construction industry, the word ‘draft’ might refer to:
- Drafting drawings. For more information see: Manual drafting techniques.
- Drafting documents, in particular legal documents such as contracts.
- A preliminary version of something such as a drawing or document, sometimes circulated for comment by others before a final version is prepared.
- Draughts. Draft is the US spelling of the UK ‘draught’, meaning a noticeable current of air inside a building that can make its occupants uncomfortable. For more information see: Draught.
NB The 2018 International Residential Code (IRC), published by the International Code Council (ICC) defines draft as: ‘The pressure difference existing between the appliance or any component part and the atmosphere, that causes a continuous flow of air and products of combustion through the gas passages of the appliance to the atmosphere.’
It defines induced draft as. ‘The pressure difference created by the action of a fan, blower or ejector, that is located between the appliance and the chimney or vent termination.’
And natural draft as. ‘The pressure difference created by a vent or chimney because of its height, and the temperature difference between the flue gases and the atmosphere.’
[edit] Related articles on Designing Buildings Wiki
Featured articles and news
Shortage of high-quality data threatening the AI boom
And other fundamental issues highlighted by the Open Data Institute.
Data centres top the list of growth opportunities
In robust, yet heterogenous world BACS market.
Increased funding for BSR announced
Within plans for next generation of new towns.
New Towns Taskforce interim policy statement
With initial reactions to the 6 month policy update.
Preparing for the future: how specifiers can lead the way
Effective specificationand the Future Homes Standard.
Heritage, industry and slavery
Interpretation must tell the story accurately.
PM announces Building safety and fire move to MHCLG
Following recommendations of the Grenfell Inquiry report.
Conserving the ruins of a great Elizabethan country house.
BSRIA European air conditioning market update 2024
Highs, lows and discrepancy rates in the annual demand.
50 years celebrating the ECA Apprenticeship Awards
As SMEs say the 10 years of the Apprenticeship Levy has failed them.
Nominations sought for CIOB awards
Celebrating construction excellence in Ireland and Northern Ireland.
EPC consultation in context: NCM, SAP, SBEM and HEM
One week to respond to the consultation on reforms to the Energy Performance of Buildings framework.
CIAT Celebrates 60 years of Architectural Technology
Find out more #CIAT60 social media takeover.
The BPF urges Chancellor for additional BSR resources
To remove barriers and bottlenecks which delay projects.
Flexibility over requirements to boost apprentice numbers
English, maths and minimumun duration requirements reduced for a 10,000 gain.
A long term view on European heating markets
BSRIA HVAC 2032 Study.
Humidity resilience strategies for home design
Frequency of extreme humidity events is increasing.
National Apprenticeship Week 2025
Skills for life : 10-16 February