Work's been quite kind lately. I wasn't really taken off any projects, but my jobscope for one is significantly reduced, while another proj went dormant. Doing minimal design and some project admin for this building. I'm quite glad to see it through, from when it was still at 20% structural works, to it's near TOP state today... The office's 1st curtain wall project too...! Above is a model pic of the entrance, and below, a pic taken from site. Guess it is something different from what we usually see...


Stuck around during the HS inspection for this project as well. Things to prepare during your HS inspection... 1) Drawings, NOAs, Waivers... 2) M&E Coordinator, Electrician and HS Supplier from your Contractor side... 3) Before inspection, please conduct internal tests.

The test was pretty comprehensive... They check the internal finishes, dimensions, ironmongery, electrical points... And they even use a tiny magnet to check the stainless steel grade of the ventilation sleeves. They also need to see the PSB certification stickers (to be stuck on the door leaf and frame) and the A4 HS instruction sheet (to be pasted on the inside of the door leaf). Then the chalk test... basically rubbing chalk on the HS door frame, then shutting the door, and then opening it. If the rubber seal is well compressed against the door frame when closed, the chalk should stain the black rubber seal of the door leaf, as shown in the pic below.

After that, they unscrew one of the ventilation sleeve and install this capping plate with two air nozzles that allows you to pump air into the HS. Once above 30 PA (not too sure about the unit, must check... but the quantity is 30), they will hold for 45 seconds. If the pressure falls below 20, you fail. The most common problem that causes leakage is that the silicon grouting in the electrical conduits are not done properly. See the air pump equipment and pressure gauge below.