Its a critical literature review of what is the standard and sustainable form of construction for the element and the impacts of the sustainable form (Cross Laminate Timber). (1) In its standard form, its function,
performance, requirements, components, materials. (2) Sustainable form, ways to make the standard form more sustainable or an alternative form which is more sustainable. (3) Impacts of sustainable form pros, cons,
cost, energy, time and health and safety.