I’ve always been a believer in using checklists all my working days, and I have written several columns here over the years directed towards different checklists (e.g., December 2016). Staying with this theme, here is a first start for a design engineer and mechanical coordinator accessibility checklist. This list addresses sheet metal access doors, access through gypboard walls, and gypboard ceilings. In addition, this list would include horizontal and vertical assess to equipment and/or components, as well as headroom: