The short video presentation below outlines some of the issues involved with taking off quantities for below ground drainage.

Every year families of swifts make their long and perilous journey from Africa to nest in the eaves of my house as they have done for over 100 years.

For a number of reasons, it may not be possible to measure and describe every item of work and/or materials. Non-quantifiable items can be accommodated in a number of ways.