Fig. 01 / Project 09 of 10 / Point cloud
Local grid / 1 : 400
Alder Court HousingPortland, 2025
- Area
- 8 900 m²
- Year
- 2025
- Structure
- Timber
- Status
- Complete
Fig. 02 / Drawing set / Plan, section, elevation, axonometric
Fine lines drawn from the model / point cloud on the last tab
Drawn fromthe same model.
Every drawing below comes from the model the building was built and scanned against, with its grid, levels and the dimensions the site team worked to.
Fig. 03 / Scan vs design / As built against as drawn
Grey under 3 mm / blue over 8 mm
The building,against its drawing.
Drag the handle to compare the design with the latest scan. Each point is coloured by how far the built surface sits from the drawn one.
4 mm / East elevation cladding rails, reset to gridline 7
Fig. 04 / Construction / Survey to handover
All milestones complete
Construction timeline
- Survey / Done
- Foundations / Done
- Structure / Done
- Envelope / Done
- Handover / Done
- Survey
- Foundations
- Structure
- Envelope
- Handover
Aug 2022 to Sep 2025 / 37 months
Fig. 05 / Credits / Team
Everyone who built it
Credits
- Client
- Alder Court Housing Cooperative
- Structure
- Cascade Mass Timber Engineering
- Services
- Willamette Building Systems
- Contractor
- Fenwick and Rowe Builders
- Scan imagery
- Norrvik
Fig. 06 / Narrative / What the model found
About 200 words
About the project
- Client
- Alder Court Housing Cooperative
- Location
- Portland / United States
- Sensors
- 318
Alder Court is a six-storey mass timber housing cooperative in Portland, Oregon: 96 homes around a planted court, with shared workshops on the ground floor. Floors and walls are cross-laminated timber from Oregon mills, the stair cores are concrete, and every home has windows on two sides.
Halfway through the facade, the cladding contractor and the timber erector disagreed about whose tolerance had run out on the east elevation. The weekly scan settled it in an afternoon: the panels were true to within 4 millimetres, and the cladding rails had been set out from the wrong gridline. Since the cooperative moved in, 318 sensors have tracked timber moisture, acoustics and indoor air in every stair and in twelve of the homes, reporting to the model every fifteen minutes.
Fig. 07 / Energy / 24 months monitored
kWh per m² per month / dashed line is the target
Energy use,month by month.
- Last 12 months
- 45 kWh/m²
- Monthly target
- 3.9 kWh/m²
- Months at or under target
- 07 / 12
- Embodied carbon
- 164 kgCO2e/m²
| Period | Measured |
|---|---|
| Oct 24 | No data |
| Nov 24 | No data |
| Dec 24 | No data |
| Jan 25 | No data |
| Feb 25 | No data |
| Mar 25 | No data |
| Apr 25 | No data |
| May 25 | No data |
| Jun 25 | No data |
| Jul 25 | No data |
| Aug 25 | No data |
| Sep 25 | No data |
| Oct 25 | 3.6 kWh/m² |
| Nov 25 | 4.3 kWh/m² |
| Dec 25 | 4.9 kWh/m² |
| Jan 26 | 5.1 kWh/m² |
| Feb 26 | 4.7 kWh/m² |
| Mar 26 | 4 kWh/m² |
| Apr 26 | 3.5 kWh/m² |
| May 26 | 3 kWh/m² |
| Jun 26 | 2.8 kWh/m² |
| Jul 26 | 3 kWh/m² |
| Aug 26 | 3.1 kWh/m² |
| Sep 26 | 3 kWh/m² |
Fig. 08 / Materials / Structural mass
Share by weight, as built
| Material | Share |
|---|---|
| Timber | 54% |
| Concrete | 26% |
| Glass | 10% |
| Steel | 6% |
| Other | 4% |
Fig. 09 / Lessons learned / Carried into the next model
03 entries
- L01Lesson learnedA weekly scan ends a site dispute faster than any meeting.
- L02Lesson learnedHomes open on two sides needed no mechanical cooling in the first summer.
- L03Lesson learnedTimber moisture settled at 12 percent within six months of handover.
