MARKET 09 · SOUTHEAST ASIA
Indonesia: constant humidity, volcanic dust and a short steel life if the coating is wrong.
The Indonesian house runs wet almost all year. Coating and ventilation dominate; snow is irrelevant and wind is moderate except on exposed coasts.
Volcanic dust settles on film and in gutters. It is not a structural load at normal depths, but it is a maintenance load: blocked outlets overflow, and overflow finds the weakest joint. Outlet count and gutter fall should be generous.
| Item | Requirement | Effect |
|---|---|---|
| Coating | hot-dip, sealed cuts | service life |
| Gutter | generous fall, cleanable | blockage |
| Vent | high side openings | humidity |
| Cover | UV film | grade |
| Anchors | concrete-in where soil is soft | type |
Tanjung Priok and Tanjung Perak are the two main gates; Belawan serves Sumatra. Fittings should travel inside the tube bundles — cartons go missing in humid yards and the crew stops for a bag of clips.
One specification line that saves a frame
“All cut ends and field cuts to be touched in with zinc-rich coating, and the touch-in material to be supplied with the order.” It costs almost nothing and it is the difference between two seasons and ten.
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