Home · Guides
Guides
Four short references. They describe practice. They do not reproduce BSI or ISO text.
What a CDE is
A single agreed place for information, not a brand of software.
The four states
WIP, Shared, Published, Archive — and the mistake each one invites.
ISO 19650 in plain English
Information management duties, not a modelling tutorial.
File naming that survives federation
Why the folder is not the name, and what to agree before the first upload.
Information requirements
OIR, AIR, PIR and EIR — who each one is for.
Standards these tools do not replace
ISO 19650, Eurocodes, BS 7671, BS 5975, CIRIA, DMRB.
Mechanical calculations
Pump and shaft power, then the manufacturer curve.
Pipework velocity
A straight-pipe velocity and head loss.
Pad bearing pressure
Why average pressure is not a foundation design.
Electrical limits
What Ohm, voltage drop and three-phase power skip.
Temporary works
A hydrostatic bound is not a BS 5975 design.
Infrastructure runoff
Where the rational method stops.
Common calculations
The everyday set, and the check each one refuses.
Structural logic
Stress, section, deflection and Euler, with the worked figures.
Fluid logic
Velocity, Reynolds number, head and pump power as one chain.
Electrical logic
From resistance to kVAr, still short of BS 7671.
Weight and heat
Plate, rebar, expansion and UAΔT.
Setting-out logic
Slope, stairs, curve and gears.