Understanding A4 Emissions in Life Cycle Assessment(LCA): The Journey to the Construction Site
When we talk about making construction more sustainable, most people think of energy-efficient buildings or eco-friendly materials. But sustainability begins long before the first brick is laid in fact, it starts on the road. That's where A4 emissions come in. In the Life Cycle Assessment (LCA) of building materials, the A4 stage refers specifically to the transportation of materials from the manufacturer or supplier to the construction site . It's a critical yet often underestimated piece of the environmental puzzle. What is the A4 Stage in LCA? LCA breaks down the life of a product into stages from raw material extraction to manufacturing, transportation, use, and end-of-life. The A4 stage is part of what's called the Construction Stage , which includes: A4 – Transport to the Construction site So, A4 focuses purely on the emissions generated from moving the product from the factory gate to the site wher...