Public buildings carry a burden private ones do not: they are judged in person, for decades, by people who did not choose to be there. Every surface we left exposed is a surface we could not fix later.
Board-formed concrete is a rehearsal problem
Four thousand square metres of exposed board-formed concrete means the structure is also the finish. There is no cladding to hide behind and no second attempt on a pour.
We ran a sample panel programme for four months before the first structural pour — board species, form-release, pour rate, vibration discipline, and how each of those decisions read under the actual daylight of the actual site. The architect rejected eleven panels. The twelfth became the standard.
Then we froze the mix design and the crew. Same batching plant, same gang, same sequence for the duration. Consistency of finish comes from consistency of process, not from inspection.
The vault under the reading room
Beneath the public floors sits a manuscript archive holding ±1 °C and ±5% relative humidity — conditions closer to a laboratory than a basement.
That meant a watertight box built and tested before any archive systems arrived, redundant close-control HVAC on separate power, gas suppression instead of sprinklers, and a 30-day stability soak test before a single document was moved in.
A library can reopen after a leak. An archive cannot un-ruin a manuscript.
Daylight without heat
The reading halls are daylit to a 2.1% average daylight factor, which sounds like a comfort target and is really an energy one — every lux from the sun is a lux you are not paying for.
Getting there in Qassim without cooking the readers meant external shading tuned per elevation from the daylight model: deep horizontal louvres south, vertical fins west, and clear glazing north where the sun never reaches.
Opening day was fixed
The municipality announced the public opening before we were structurally complete. That is a normal risk on civic work and it is not negotiable once announced.
We protected the date by pulling joinery and shelving forward into the archive soak-test window, so two workstreams that would normally run in sequence ran in parallel behind a hoarding. The library opened on the announced day.