Viewpoint: How can we allow room for innovation in a competency focused profession?

This month's letters address the topics of floor loading, recycling materials and the importance of sketching skills, among others.

Steve Faulkner is impressed by a thought-provoking book which makes the case that all design firms should be using BIM in their projects.

Andy Leask sees a role for the professional institutions in creating an environment where all people – from junior staff to directors – feel comfortable discussing mental health issues with their peers.