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Category: Profile Lighting Building Regulations Effect on Lighting Design

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Building Regulations - Effect on Lighting Design

BUILDING REGULATIONS Part L2A - (New Buildings Other Than Dwellings) - Summary

The intention of these Approved Documents is to introduce measures which will focus the design in relation to energy conservation. In all cases, the building will have a PREDICTED rate of carbon emission and a TARGET rate. The predicted must not exceed the target. The design team will have to use a standard modelling device to ratify the performance of the building.

Part L2A

The effect on lighting is summarised below, it covers general lighting efficacy targets in office, industrial and storage areas in all building types. (Offices encompass all desk based tasks including school classrooms, seminar and conference rooms).

Target Initial Efficacy (TIE):- 45 luminaire-lumens/circuit-watt minimum over whole area.



Another way of considering the calculation is to compare the LOR of an individual luminaire to the LOR which would be needed to achieve the proscribed minimum efficacy (see typical tables below). Provided the luminaire has an LOR greater than that tabulated for the lamp configuration, then the scheme would comply.

Examples of LOR that meet TIE criteria of 45, 50 & 55 ll/cw with HF gear

TL5 Lamps

TLD Triphosphor Lamps

TCL Lamps

TCD/TCT Lamps

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Profile Lighting Services Ltd
Links Business Centre,
Raynham Road Bishop’s
Stortford
Herts
CM23 5NZ

Tel : +44 (0) 1279 757595
Fax : +44 (0) 1279 755599
 

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