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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

DimensionValueClassWhat it means
guardRadius0.36 mIf 20% out: 0.07 mInterpolatedRadius of the guard disc. A plank is cut to its own size and the post through it is whatever it is — so the overhang that stops a rat is the difference between the two rather than a figure of its own. Written as an overhang first, which made the disc grow with its post and the check on it a restatement that could not fail. The sources agree the disc is there and that it stops rats; none gives a size. So a defence whose whole efficacy is a difference, with both figures invented.No source
guardThickness0.07 mMoves no measurementInterpolatedThickness of the guard disc.No source
guardDrop0.55 mMoves no measurementInterpolatedHow far the disc sits below the granary floor. It has to be lower than the hood’s eave: a guard hidden inside the roof cannot be inspected by anyone, and more to the point, a hood falling past it becomes the way round that it exists to close. Written as 0.34 m first, which put it inside the hood.No source
guardFacets20Moves no measurementInterpolatedFacets on the guard disc. Drawing resolution rather than a dimension of the building.No source
postSection0.16 mIf 20% out: 0.02 mInterpolatedSection of a post. Slim — and that is part of the defence: a stout post shrinks the overhang of the disc above it until it is no longer any use.No source
postSpacing1.85 mIf 20% out: 0.37 mInterpolatedSpacing between posts.No source
stoneHeight0.24 mIf 20% out: 0.05 mInterpolatedHeight of the stone a post foot stands on.No source
stoneWidth0.40 mMoves no measurementInterpolatedWidth of that stone.No source
floorHeight2.00 mIf 20% out: 0.40 mInterpolatedHeight of the granary floor above the ground. High enough for a person to sit and work beneath it, which is what happens.No source
floorThickness0.07 mMoves no measurementInterpolatedThickness of a board floor.No source
storeHeight1.25 mIf 20% out: 0.25 mInterpolatedHeight of the store. Nobody can stand up in it, and nobody needs to: what is kept there is rice, and rice goes in from above.No source
storeInset0.10 mMoves no measurementInterpolatedHow far the store’s walls sit inside the line of the posts.No source
wallThickness0.05 mMoves no measurementInterpolatedThickness of a board wall.No source
hatchWidth0.60 mMoves no measurementInterpolatedWidth of the opening at the end of the store, where rice goes in and comes out.No source
ridgeRise2.50 mIf 20% out: 0.50 mInterpolatedRise of the ridge above the store floor.No source
eaveDrop0.28 mIf 20% out: 0.06 mInterpolatedHow far the eave falls below the store floor. An eave that drops past its own floor is what makes this form read as a hood rather than as a roof — but it has to stop above the rat guards, because a hood falling past them becomes a way round.No source
eaveReach1.55 mMoves no measurementInterpolatedReach of the eave from the axis, measured horizontally.No source
hoodBelly0.70Moves no measurementInterpolatedHow far the hood’s side bellies outward from a straight line between the ridge and the eave. Zero gives an ordinary hip; this figure is what makes the curve.No source
hoodSteps9Moves no measurementInterpolatedHow many levels are used to approximate that curve. Drawing resolution rather than a dimension of the building — but it has to be large enough that the curve reads as a curve rather than as a stair, and the check requires each step to be steeper than the one below it.No source
ridgeHalf0.22 mMoves no measurementInterpolatedHalf-length of the ridge at the top of the hood. Not zero: the top is a short line rather than a point.No source
rafterSection0.07 mMoves no measurementInterpolatedSection of a rafter.No source
raftersPerSide5Moves no measurementInterpolatedRafters on each face.No source
thatchCourseDepth0.20 mMoves no measurementInterpolatedExposed depth of one course of thatch.No source
thatchThickness0.08 mMoves no measurementInterpolatedHow far a course stands proud of the one below.No source
thatchLap0.45Moves no measurementInterpolatedThe share of a course the course above laps.No source
thatchBed0.04 mMoves no measurementInterpolatedClearance between the frame and the first course.No source
seatHeight0.42 mMoves no measurementInterpolatedHeight of the sitting platform beneath the granary, where there is one.No source
seatThickness0.06 mMoves no measurementInterpolatedThickness of that platform’s boards.No source
jointEngagement0.30Moves no measurementInterpolatedDepth of the tested joint engagement, as a share of the smaller member.No source
postSeat0.30Moves no measurementInterpolatedDepth of the dish in the stone the post foot seats into.No source
desaScale1.24Moves no measurementInterpolatedSize of a village lumbung relative to a household one. That the village’s is larger is sourced; how much larger is the author’s.No source
builtForRice1Moves no measurementCanonThis building is for rice, not for people. There is no storey in it a person could stand up in, and in a Sasak yard it is routinely the most carefully made thing standing. The other eleven in this project scale their care to the standing of the people inside; this one scales it to the value of what is stored, and the people sit underneath.Sumarni, N. K., “Lumbung Padi Sasak: Bentuk, Fungsi dan Makna”, Jurnal Arsitektur Zonasi (2018).
guardOnEveryPost1Moves no measurementCanonEvery post carries one disc just below the floor, and it has exactly one job: a rat climbing the post cannot get past it. It is the only element in this project aimed at something other than a person — and it only works if there is no other way up, so what the check tests is the absence of one.Departemen Pendidikan dan Kebudayaan, Arsitektur Tradisional Daerah Nusa Tenggara Barat (Proyek Inventarisasi dan Dokumentasi Kebudayaan Daerah, Jakarta).
noOtherWayUp0Moves no measurementCanonZero other paths from the ground to the store floor. No ladder left leaning, no raking brace touching both, no wall reaching down past the disc — and the hood’s own edge stops above it too. A rat guard with a bamboo pole beside it is not a guard, and neither is one covered by its own roof.Departemen Pendidikan dan Kebudayaan, Arsitektur Tradisional Daerah Nusa Tenggara Barat (Proyek Inventarisasi dan Dokumentasi Kebudayaan Daerah, Jakarta).
hoodFallsPastTheFloor1Moves no measurementCanonThe eave falls past the floor of the store. This form reads as a hood rather than a roof precisely because its edge sits below the plane it protects.Departemen Pendidikan dan Kebudayaan, Arsitektur Tradisional Daerah Nusa Tenggara Barat (Proyek Inventarisasi dan Dokumentasi Kebudayaan Daerah, Jakarta).
seatedOnStone1Moves no measurementCanonThe post feet stand on stones and are not buried — which closes a path to termites as well as to rats.Waterson, R., The Living House: An Anthropology of Architecture in South-East Asia (Oxford University Press, Singapore, 1990).
granaryRow1Moves no measurementCanonLumbung stand in a row in the compound alongside other granaries and the dwellings. The most carefully made building in the yard is not the one people sleep in, and that only reads when the others are in view.Departemen Pendidikan dan Kebudayaan, Arsitektur Tradisional Daerah Nusa Tenggara Barat (Proyek Inventarisasi dan Dokumentasi Kebudayaan Daerah, Jakarta).
neighbourSpacing6.00 mMoves no measurementInterpolatedSpacing between lumbung along their row. The only figure left for the neighbours: everything else is this granary itself, read off the layout being drawn, because a neighbouring lumbung is a lumbung.No source

Bibliography

  • depdikbud-ntb · reference

    Departemen Pendidikan dan Kebudayaan, Arsitektur Tradisional Daerah Nusa Tenggara Barat (Proyek Inventarisasi dan Dokumentasi Kebudayaan Daerah, Jakarta).

  • sumarni-2018 · reference

    Sumarni, N. K., “Lumbung Padi Sasak: Bentuk, Fungsi dan Makna”, Jurnal Arsitektur Zonasi (2018).

  • waterson-1990 · ethnography

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

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. 1ridgeRise0.50 mridge height
  2. 2floorHeight0.40 mheight of the store floor
  3. 3postSpacing0.37 mpost spacing across
  4. 4storeHeight0.25 mheight of the store
  5. 5guardRadius0.07 moverhang of the guard
  6. 6eaveDrop0.06 meave height
  7. 7stoneHeight0.05 mridge height
  8. 8postSection0.02 moverhang of the guard

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 Symmetric about the ridge plane, x = 0

    1720 points; largest mirror deviation 0.00 mm.

  • pass
    Every tenon contained in its mortise

    10 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

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

  • pass
    Mesh integrity: indices, triangles, normals

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

  • pass
    Every post carries a disc, and every disc overhangs its post

    4 discs of 360 mm radius on posts of 160 mm, leaving 280 mm of overhang. The entire efficacy of this defence is that difference — and both figures are the author’s, because no source gives either.

  • pass
    Nothing else reaches from the ground to the store floor

    Zero parts cross the guard height at 1.69 m except the posts themselves; the sitting platform stops short of every post; and the hood’s edge stops 0.27 m above them, so the discs hang clear and can be seen. A rat guard with a bamboo pole beside it is not a guard — so half of this defence is about everything that is not the disc.

  • pass
    There is no storey in it a person could stand up in

    A store 1.25 m high. This building is for rice, and in a Sasak yard it is often the most carefully made thing standing — its care follows the value of what is stored rather than the standing of whoever stores it. The other eleven in this project scale it the second way.

  • pass
    Four posts or six, and nothing between

    4 posts, a lumbung keluarga. A lumbung on five posts is not a smaller one; it is a building this tradition does not make.

  • pass
    The eave falls past the floor of the store

    An eave at 1.96 m against a store floor at 2.24 m — 0.28 m below it. That is what makes this form read as a hood pulled over a box rather than a roof set on top of one.

  • pass
    The hood curves outward: every band is shallower than the one below it

    9 bands, from 79° at the eave to 56° at the top. Made from the same primitive as five earlier roofs with nothing but more levels — a curve is many steps, and what separates it from a faceted cone is that the pitch keeps changing, which a check that only counted levels would not know.

  • pass
    Thatch courses lap with no bare band, the whole way round the curve

    16 courses over 3.11 m.

  • pass
    Every part declares the dimensions it came from

    152 parts, every one tagged. By least-sourced input: 0 measured, 0 canon, 152 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 disc does not change. Its radius is the size of a plank, so a stouter post eats that overhang from the inside until there is none — and the rat guard becomes a collar flush with the timber it was meant to project beyond. Not one part of this granary looks weaker; the posts look sturdier. Twelve buildings, twelve rules that cannot be carried out — and what is particular here is the direction: the thing that defeats this defence is the first improvement a builder would reach for.

The house as built

pass160 mm / 280 mmpost section · overhang left

4 discs of 360 mm radius on posts of 160 mm, leaving 280 mm of overhang. The entire efficacy of this defence is that difference — and both figures are the author’s, because no source gives either.

Rear prow raised to 0.72 m

fail720 mm / 0 mmpost section · overhang left

the guard on tiang-0-0 does not overhang its post; the guard on tiang-0-1 does not overhang its post; the guard on tiang-1-0 does not overhang its post; the guard on tiang-1-1 does not overhang its post

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.