UK Purple Guide · SGSA · ADB Building Regs

Crowd management,calculated and documented.

Run UK-compliant capacity calculations for outdoor and indoor events, then build a complete Crowd Management Plan from a battle-tested template — with AI-suggested wording for every field.

82
ppm/m flow rate (level)
8m
outdoor evac time
2.5m
indoor ADB
−1
largest exit discount

Capacity calculator

Add zones with sqm and density, or pull from ADB floor space factors. Stack up exit width × flow rate × evac time. The largest exit is automatically discounted.

CM Plan builder

A guided 7-section form mirroring the ESS template. RAMP analysis, DIM ALICED matrix, normal + emergency conditions for every phase.

Word & PDF export

Export your finished plan as a .docx that matches the template structure, plus a PDF capacity report for the safety advisory group.

Outdoor

Purple Guide · SGSA

Greenfield, street and arena events. Flow rates 65–82 ppm/m, evacuation windows from 3.5 to 8 minutes depending on terrain, profile and management.

capacity = width × flow × time − largest_exit
Indoor

Approved Document B

Building Regulations 2010 ADB. Floor space factors per occupancy type (standing, dining, exhibition…), plus exit width sized at 80 ppm/m with the largest exit assumed unavailable.

area_cap = sqm ÷ floor_space_factor

Ready to plan an event?

Create your first event, run the capacity calculator, then generate the CM Plan.