- Project plans
- Project activities
- Legislation and standards
- Industry context
Last edited 10 Aug 2018
A component is a constituent part of a building (or other built asset) which is manufactured as an independent unit, subsystem or subassembly, that can be joined or blended with other elements to form a more complex item. Generally, components are ‘self-contained’ and sourced from a single supplier, typically the complete unit provided by that supplier rather than its constituent parts.
Where a component is a bespoke item, it may be necessary to prepare a component drawing. Where a component is an off-the-shelf-product or a commonly-used element, a component drawing may already exist that can be re-used.
Component drawings provide detailed information about the individual units. They may be drawn at large scales such as; 1:10, 1:5, 1:2, 1:1, and so on. They may include information such as component dimensions, construction, tolerances, and so on. They may include references to the relevant parts of the specification providing information about materials and the minimum acceptable quality.
It is important that component drawings do not duplicate information included in separate specifications as this can become contradictory and may cause confusion.
Component drawing numbers may be prefixed by the letter C.
 Find out more
 Related articles on Designing Buildings Wiki
- As-built drawings and record drawings
- Assembly drawing.
- CAD layer.
- Concept drawing.
- Design drawings.
- Detail drawing.
- Electrical drawing.
- Engineering drawing.
- Exploded view.
- General arrangement drawing.
- Geometric form.
- Installation drawing.
- Orthogonal plan.
- Plumbing drawing.
- Scale drawing.
- Shop drawing.
- Section drawing.
- Technical drawing.
- Types of drawing.
- Working drawing.
Featured articles and news
Brokenshire launches an implementation plan for the recommendations made by Dame Judith Hackitt.
BSRIA publication provides guidance about the capture and analysis of big data.
Gove launches a waste and resources strategy for England.
Only 9% of construction workers are 24 or younger.
Blighting local areas, preventing investment and and encouraging anti-social behaviour.
Sharing knowledge about the conservation of the built and historic environment.
CIOB launches a call to improve quality in the built environment.
Vastint gets permission for a 6.6 hectare site to support the expansion of Leeds’ city core.
One of the Isle of Man’s best 1960s buildings.
Using renewable energy in developing countries - QSAND and Loughborough University Research collaboration.
From frost damage to sulphate attack, common causes of defects in brickwork.