Principal works in the construction industry
According to approved document L of the building regulations, the term 'principal works' means:
| ...the work necessary to achieve the client's purposes in extending the building and/or increasing the installed capacity of any fixed building services. The value of the principal works is the basis for determining a reasonable provision of consequential improvements. |
Where, fixed building services are internal or external lighting systems (not emergency escape lighting or specialist process lighting), fixed systems for heating, domestic hot water, air conditioning or mechanical ventilation, or any combination of those systems.
And, consequential improvements are efficiency improvements consequential to changes to a building, required by regulation 28 of the Building Regulations to make the whole building comply with Part L of the Building Regulations.
[edit] Related articles on Designing Buildings Wiki
Featured articles and news
Conservation Principles for North Ireland
IHBC publishes response to consultation.
Budget 2022 - CIOB Ireland responds
Institute applauds funding initiatives but presses for additional retrofit and tax measures.
Electrotechnical sector prepares for All-IP networks
The switch from analogue to digital has begun.
The fourth industrial revolution is well underway.
IHBC COP26 virtual Conservation Helpdesk
Free online resource will offer guidance on conserving places and the planet during COP26.
Government allocates additional money for building new homes on derelict land.
Human centric goes beyond user friendly
Smart built environments can be designed around the requirements of real people.
Being practical about digital transformation
Consistency is at the core of realistic strategies.
CIOB's Art of Building photography competition
Entries being accepted until 20 November 2021.