Sources

Sources

Every dimension the house is generated from is below, with its class and its citation. This is the project’s honesty layer, and it is given a room of its own because a smooth 3D render implies a precision the sources do not have.

The dimensions

Bibliography

• sellato-1989 · reference

  Sellato, B., Hornbill and Dragon: Arts and Culture of Borneo (Elf Aquitaine, Jakarta / Kuala Lumpur, 1989).

• waterson-1990 · ethnography

  Waterson, R., The Living House: An Anthropology of Architecture in South-East Asia (Oxford University Press, Singapore, 1990).

• schiller-1997 · ethnography

  Schiller, A., Small Sacrifices: Religious Change and Cultural Identity Among the Ngaju of Indonesia (Oxford University Press, New York, 1997).

• depdikbud-kalteng · reference

  Departemen Pendidikan dan Kebudayaan, Arsitektur Tradisional Daerah Kalimantan Tengah (Proyek Inventarisasi dan Dokumentasi Kebudayaan Daerah, Jakarta).

Which of these matters most

Nearly every dimension on this page is the author’s own. What the provenance bar does not say is whether that matters. Each row below is computed by rebuilding the house: one dimension is pushed 20%, and the house is measured to see how far it follows. Nothing is estimated — the figures are the difference between two runs of the generator.

1. 1shareLength6.72 mlength of the house
2. 2bilikDepth1.08 mwidth of the house
3. 3samiDepth0.92 mwidth of the house
4. 4ridgeRise0.68 mridge height
5. 5floorHeight0.58 mfloor height
6. 6wallHeight0.48 mridge height

If only one dimension could be surveyed, this is the one. This is sensitivity, not uncertainty: it shows what moves, not how likely the value is to be wrong. The 20% is itself the author’s choice.

Invariants

There is no measured drawing yet, so correctness rests on structural truth. These checks fail the build.

• pass
  Bilateral symmetry about The members running the whole length of the house mirror about its middle

  40 points (5 of 189 parts); largest mirror deviation 0.00 mm.

• pass
  Every tenon contained in its mortise

  101 pasak, takik and tumpu joints; every one engaged.

• pass
  No joint spans more than one stage

  Every joint engages two parts from the same stage or from consecutive ones.

• pass
  Stage ordering, and nothing below ground

  189 parts, every one bearing on something already standing or on the ground.

• pass
  Mesh integrity: indices, triangles, normals

  288 triangles; indices in range, none degenerate, every normal unit length.

• pass
  Every household’s share is equal, and there is always one fewer partition than households

  8 shares of 4.20 m each, divided by 7 partitions. This is not a large house divided up; it is a row of equal shares. Note that no mirror check is made here: a house grown from one end is genuinely not symmetric along its length, and picking an axis that happens to pass would state something untrue.

• pass
  This building has no characteristic size: its length is a census, not a proportion

  From 3 households to 20 the length-to-width ratio runs from 1.3 to 8.4 — 6.7 times — while the width, the floor height and the ridge height do not move at all. Each household adds exactly one share and adds nothing else. It is the only check in this project that passes by showing a proportion failing to hold.

• pass
  One floor, continuous end to end, under both the bilik and the gallery

  One plane 33.60 m long. This is one building rather than a row of houses touching — which is what separates it from a village.

• pass
  The sami is never walled: the part that belongs to everyone cannot be claimed

  A gallery 4.60 m deep, open along all 33.60 m of the house, enclosed only by a rail 0.77 m high. It is nearly as deep as the private room behind it, and that ratio is the statement.

• pass
  One way up, and it is at the end the house did not grow from

  One hejot at z = -14.70 m. Tumbuh ke hilir: the house lengthens at the other end, so the way in stays where it has always been through the building’s whole history. At night the log is pulled in.

• pass
  A gable: the ridge runs the whole length of the roof

  A ridge of 36.20 m, the same length as its eave, so the two ends stand vertically instead of falling inward. The third distinct form out of one primitive — a stepped hip, a pyramid, and now a gable.

• pass
  Shingle courses lap with no bare band, from the eave to the ridge

  36 courses over 7.16 m of slope; smallest lap 2.8%. Split shingles need a greater lap than a thatched roof, because what leaks is the joint.

• pass
  Every part declares the dimensions it came from

  189 parts, every one tagged. By least-sourced input: 0 measured, 0 canon, 189 interpolated.

• skipped
  Checked against a measured drawing of a real house

  Skipped. No measured drawing has been wired in, so there is nothing to compare against. This check will not be made to pass by weakening it.

What a check is preventing

Ten green rows are not a reason to believe anything. So one check is run against a house built to break it, and what is printed below is that check’s own verdict rather than a description of it.

The two strongest checks in this pack cannot be broken by pushing any single dimension — a length that is not a proportion stays not a proportion whatever the numbers are, and the bilik wall stands exactly on the gallery boundary by construction. Both are tested directly in the test file, against their own arithmetic. What is shown here compares two genuinely independent numbers: a shingle roof does not leak through its shingles, it leaks at the joints between them, and the only thing holding water out there is how far each course laps the one below. Take the lap away and the roof is still made of exactly that much ironwood, over exactly the same rafters, and it stops covering itself.

The second house is never rendered. It is built during the build, failed, and thrown away.

This bar moves as real surveys are wired in. That movement is the project's progress metric.