An illustrative G+12 Riyadh business hotel: 176 rooms on eleven guest floors, with cooling plant on the roof and power, pumps and tanks at ground and basement level. Use the controls to show each system, go to a part of the building, or step through it. The equipment list below the views names every numbered point on the model.
Your browser can't show the 3D model. The drawing shows the same four systems in section: cooling from the roof, power, fire water and domestic water from the basement.
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What you are looking at
Cooling is made on the roof. Power and pumps sit in the basement. Risers in the core and stairs carry chilled water, power, sprinkler water and domestic water to every floor. A survey starts by tracing these four routes.
The example building
| Item | Illustrative value |
|---|---|
| Type | Business hotel, Olaya / King Fahd Road type. Not a real building. |
| Storeys | B2 + G + L1 podium + 11 typical guest floors + roof plant (G+12), about 52 m high |
| Rooms | 176 keys: 16 per floor on 11 guest floors (L2 to L12) |
| Podium | Lobby and all-day dining at ground, ballroom and meeting rooms above |
| Cooling | 3 air-cooled chillers of about 350 TR, 2 heat-recovery fresh-air units, 4-pipe fan coils with heating water from the roof heat pumps |
| Power | 13.8 kV SEC supply and 2 × 1,500 kVA transformers (in this example SEC's equipment: we work on the building side of the supply boundary), 1,250 kVA standby generator through an automatic transfer switch |
| Fire safety | Electric, diesel and jockey fire pumps; sprinkler and standpipe risers in both stairs; addressable fire alarm with voice evacuation and a fire command centre at the lobby |
| Water | About 250 m³ domestic and 300 m³ fire storage below ground; 2 × 25 m³ roof tanks with a booster set |
Your building