LT Method 3.0, An Energy Design Tool for Buildings in Southern Europe, is the one described here. This version was used in the ZEPHYR European Architectural Design Competition.
The LT Method is available through Cambridge Architectural Research Ltd, and The Martin Centre for Architectural and Urban Studies, University of Cambridge.
The users manual provides a step by step guide to using LT, including examples. Further, the material included and discussed herein should be sufficient to serve as an effective LT users manual.
The LT Method is a manual method, requiring the use of a pencil and calculator; entering values taken from the drawings and the LT Curves, on to the LT Worksheet.