New Build Maths with Class 5

Our new build site manager, Barry, kindly provided Class 5 with plans for the foundation works to the new build.  We decided to calculate the volume of the newly dug trenches in order to calculate an estimated cost of concrete to build the foundations, the number of lorry loads of concrete which would be required to fill the trenches and an estimation of the time it would take to complete the job.  Real-life maths in action!