How to perform a constructability review

A constructability review looks at drawings through the eyes of the people who actually have to build it. Can this be built as designed? Are there access problems? Sequencing issues? Details that just won't work in the real world? This kind of review catches the problems that look fine on paper but fall apart in the field.

Who should attend a constructability review?

Constructability reviews need field experience, not just engineering knowledge:

What access and logistics issues should a constructability review catch?

A lot of buildability problems come down to getting materials and workers where they need to go:

• Can equipment actually fit through doorways and corridors?
• Is there crane or forklift access for heavy materials?
• Can workers get to the work area safely?
• Is there room to stage materials near where they'll be installed?
• Can finished work be protected while other trades are still working?
• Will temporary power and water be available where it's needed?

Why does installation sequence matter in a constructability review?

The order you build things matters a lot. Watch for these sequencing problems:

What tolerance and fit issues should a constructability review check?

A constructability review checks tolerances and fit because field dimensions rarely match the perfect geometry on the drawings:

• Are clearances realistic given normal construction tolerances?
• Is there room to adjust for field conditions?
• Can connections be made with standard tools and reasonable access?
• Can the specified tolerances actually be achieved with standard methods?
• Is there coordination space between systems that run close together?

What temporary works should a constructability review consider?

Construction needs temporary stuff that doesn't show up on the final drawings:

• Where will shoring and scaffolding go?
• Are there enough tie-off points for fall protection?
• Can formwork be installed and stripped given the structure shown?
• Is there room for temporary bracing during steel erection?
• Can temporary enclosures be set up for winter work?

Why does maintenance access belong in a constructability review?

Equipment needs to be maintained after construction is done. Check that:

• Filters can be changed without tearing out ceilings
• Access panels are shown for valves and dampers
• Equipment can be pulled out for replacement
• There's clearance for service and maintenance work
• Motor and pump pullout spaces are adequate

How should you document constructability findings?

Create documentation that actually leads to action: