Field notes
What we find on Singapore roofs
Measurements, standards and the failures we keep meeting. Written for building managers, consultants and engineers who have to act on the findings.
All
Standards
Earthing
Maintenance
Electrical
One earth reading tells you nothing. A run of them tells you everything.
Why the commissioning baseline matters more than the number you measured today.
New rooftop plant changes your protection system. Nobody tells you that.
Solar arrays, antennas and replaced cladding all alter the system, and none arrive with a review.
Most damaging transients arrive on the data line, not the power supply.
Coordinating Type 1, 2 and 3 devices — and the telecom entry path everyone forgets.
The five defects we find on almost every first audit.
Loose clamps, lost test joints, painted-over bonds, missing separation, undocumented additions.
Rolling sphere, protective angle or mesh — how the method gets chosen.
A plain explanation of the three placement methods in SS 555-3 and when each one applies.
“Can you do this?” is a licensing question before it is a technical one.
How operating voltage and approved load decide which class of LEW can take responsibility.
One note a month. Findings, not marketing.
Written for people responsible for a building, not for a newsletter list.