CARBON ANALYSIS FINDINGS

Total Embodied Carbon

The tiny home is mainly composed of structurally insulated panels (SIPs) with it accounting for the walls, ground floor and roof. The total EC based on the EC calculations from The Inventory of Carbon and Energy (ICE) excluding transport is 5948.374 Kg of CO2. The site holds 25 tiny homes meaning the EC for all the tiny homes would be 148,709.35 Kg of CO2.

Using concrete mixed with fly ash will reduce the total embodied carbon (TEC) of one tiny home to 5467.841Kg of CO2, reducing the EC by 480.89 Kg. With a total of 25 tiny homes, it would be a total of 136,696.03 Kg of CO2. Comparing the two, using a lower carbon concrete for the foundation will reduce the TEC for 25 tiny homes by 12,013.32 Kg of CO2.

The carbon emissions to transport the materials, based on a standard semi-trailer truck is 249Kg of CO2 per lorry. One transport truck is able to hold materials for 3 tiny homes excluding the concrete for the foundation.

Therefore to transport the 25 tiny homes needed for the site would take 9 trucks to transport the necessary amount of materials for all the tiny homes which would be 2241Kg of CO2 one way and 4482 Kg of C02 two ways.

The total embodied carbon for 25 tiny homes including the transportation emissions for both ways is 141,178.03 Kg of CO2 or 141.178 tonnes of CO2. In the UK, the average masonry house takes between 50 and 80 tonnes of CO2 to build, therefore the TEC of all tiny homes including transportation is equal to building 2-3 average masonry homes in the UK.

CO2 Transmission Emission Calculation

Mileage x Tonnes = Tonne-Miles

70m x 22 = 1540 tonne-miles

Weight-based Truck Emission x Tonne-Miles

161.8 x 1540 = 249,172g of CO2 or 249kg of CO2