Guides · Bedroom · 14 min read · Updated September 2026

Beams and corners

A beam over the bed is the complaint practitioners hear most often, and the one with the plainest explanation. What the tradition says about beams, blades and corners, the house of beams it was written in and the one beam it honoured, the remedies in order with what each costs, the ceiling heights the codes and the research give, and where the perceptible case ends.

Oriented NW 309°

Metal

Fig. 01 A room under exposed beams. The tradition’s question is not whether there are beams but which one crosses the bed.

Sharp and heavy things aimed at a body are the one place where the tradition, the interior designer and plain physical intuition agree without much argument. A beam across the bed, the edge of a column beside the desk, the corner of a wardrobe pointing at the pillow: every manual names them, most people already dislike them, and the remedies are the same in every school. The disagreement is only about range, and this guide says where the line falls.

Three shapes

These are interior applications of a landform logic. The classical texts read a cutting ridge or a sharply eroded spur as bad ground, and the beam and the column edge are that reading brought indoors, at the scale of furniture. The transmission is real but it is not literal: there are no bulkheads in the Zangshu. The interior codification is much more recent, and the specific remedies most Western readers know arrived through Lin Yun’s teaching in the 1980s, as Rossbach recorded it.

The house of beams

The rule was written in houses that were nothing but beams. A Chinese timber house carried its roof on a frame of columns and cross-beams, stacked one above another to the ridge, with the purlins running along the house and the rafters across, all of it exposed, so that a person lying in any room looked up at a ceiling of timber crossing in two directions. A rule against sleeping under a beam could not have meant every beam. It meant the beam that crossed the sleeper at the head or the chest, close enough to press, and above all it meant one beam in particular: the ridge beam, dongliang, the highest and longest timber in the house and the one on which, in the carpenters’ reckoning, the house depended.

Tradition · Raising the ridge

The ridge beam was raised with a ceremony, shangliang, and the ceremony tells you what the tradition thought a beam was. The day was chosen from the almanac; the beam was wrapped in red cloth, painted with the eight trigrams or the taiji, and hung with charms, coins and a pair of chopsticks; firecrackers were let off as it went up, and the carpenters were fed. Knapp’s survey of the folk beliefs of the Chinese house records the rite from province to province, and Ruitenbeek’s study of the carpenters’ manual gives the spells that went with it. A beam was not an inert thing to the people who wrote the rule; it was the house’s spine, charged at its raising, and a body lying under it lay under something alive. The manuals’ dislike of the beam over the bed is the other face of the ceremony: respect kept the ridge above the hall, where people stood, and away from the bed, where they lay.

The beam

Fig. 01 A beam over the bed, in section. Left: the bed under the beam, which crosses the sleeper at the chest, the arrangement every manual names first. Right: the bed moved so that the beam is clear of it. Where the bed cannot move, the manuals prefer the beam along the body to the beam across it, and a false ceiling, canopy or fabric to nothing. The section shows what the objection is to: the seen mass overhead, not anything structural. A beam behind plaster is no beam at all in this reading, which is why hiding it is treated as a real remedy.

The position singled out in nearly every source is the beam across the sleeper’s head or chest. The remedies, in the order the manuals and ordinary reasoning agree on, and the order of what they cost:

Move the bed out from under it. Universally recommended, requires no belief in anything, and the only remedy that changes the situation rather than its appearance. It costs an afternoon.
Turn the bed so that the beam runs along the body rather than across it. The lesser evil in most accounts, and the one small rooms usually allow; a line along a sleeper is not the line over the chest the manuals single out. An afternoon.
Hide it. A false ceiling, a canopy, a tester, fabric stretched below the beam. The tradition treats concealment as a real mitigation, and the perceptual case supports it: what is felt is the seen mass overhead. A carpenter.
Symbolic remedies. Two bamboo flutes hung at an angle under the beam, a red cord, an uplight aimed at it. These belong to one school, and they leave the beam where it was. Nothing, which is what they do.

Fig. 02 The remedies for a beam over the bed, in order, each a plan of the same room with the beam hatched across it. A: move the bed out from under the beam, the only remedy that changes the situation rather than its appearance; here the bed takes the side wall and the beam crosses the floor. B: turn the bed so that the beam runs along the body rather than across it, the lesser evil most small rooms allow, because a line along a sleeper is not the line over the chest the manuals single out. C: hide it, with a canopy, a tester or a false ceiling below the beam, drawn as the dashed field over the bed; the tradition treats concealment as a real mitigation and the perceptual case agrees, since what is felt is the seen mass overhead. D: the Black Sect’s cure, two bamboo flutes hung under the beam with red ribbon, drawn ghosted with the bed where it was; it is a genuine part of that school’s practice and no part of classical feng shui, which would move the bed. The room is two metres eighty-five by two and a half, the beam twenty-five centimetres wide at forty centimetres from the head wall, where a bulkhead most often falls in a converted flat. The order is the manuals’, and it is also the order of cost: A and B cost an afternoon, C a carpenter, and D nothing, which is what it does.

Six ceilings called a beam

Fig. 03 Six ceilings the manuals lump together as a beam, each in section with a bed under it, and what the site does about each. A, the downstand: one deep structural beam across the room, the case the manuals mean and the one the bed should leave, by moving out from under it or turning so the beam runs along the body. B, exposed joists: many shallow timbers evenly spaced, which is a ceiling and not a beam, and which a sleeper reads as a texture rather than a line; the manuals themselves slept under them for two thousand years. C, the coffered ceiling, a grid of shallow beams all over, the tradition’s own ceiling in every hall it built and no fault at all. D, the sloping ceiling of an attic, low on one side, where the answer is the head to the high side and nothing else. E, the false beam, hollow timber added for the look in the last century’s cottages and pubs, which can come down in an hour or stay, since it carries nothing and the research on ceiling height finds no effect from a line that is not low. F, the boxed duct, a pipe or a flue cased in plasterboard, which is a downstand in everything but structure and is treated as one, with the extra rule that nothing that carries water or gas should run over a pillow. The research the beams guide cites, Meyers-Levy on ceiling height and Vartanian on curved and rectilinear rooms, is about the height and the shape of the whole ceiling, not about single members; the site reads the manuals’ beam as the case where a member lowers the ceiling over a sleeper by a hand or more.

The manuals say beam and the household looks up and sees one of six things, and the sheet above sorts them, because the remedies above are for one of the six and a waste for the others. The downstand, a single deep structural beam across the room, is the case the manuals mean: it lowers the ceiling over the sleeper by a hand or more along one line, and it is the case the bed should leave, out from under it or turned along it. Exposed joists are the opposite case that looks the same to a nervous reader: many shallow timbers, evenly spaced, which is a ceiling and not a beam, the ceiling the tradition itself slept under in every timber house it built, and which a sleeper reads as a texture rather than a line; a room of joists needs nothing. The coffered ceiling, a grid of shallow beams all over, is the tradition’s own ceiling in every hall of the furniture essay and no fault at all, and a household that has been sold a cure for it has been sold a cure for a hall. The sloping ceiling of an attic is a beam in section and not in kind: the answer is the head to the high side and the feet to the low, which the levels guide gives with the heights, and nothing hung anywhere. The false beam, a hollow timber added for the look in the last century’s cottages and pubs, carries nothing and can come down in an hour; where it is low over a bed it is treated as a downstand, and where it is not it is decoration, since the research on ceilings, Meyers-Levy on height and Vartanian on shape, finds its effects in the height and the form of the whole ceiling and not in a line that is not low. The boxed duct, a pipe or a flue cased in plasterboard, is a downstand in everything but structure and is read as one, with the one rule the tradition did not need and the plumber adds: nothing that carries water or gas should run over a pillow, because the day it leaks it leaks onto a face. A household that can name its ceiling from the sheet knows whether it has a beam at all, and most, by the sheet, do not.

The corner

Plan 04 A corner aimed at the sofa: the line of the edge, the seat moved off it, the edge softened A chimney breast projects from the left wall and its edge points across the room. The ghosted sofa sits in the line of the edge; the solid sofa is moved off it, against the top wall with the door in view, and a plant stands in front of the corner. The same drawing serves a column, the end of a partition or the corner of a tall wardrobe.

The chimney breast, the structural column, the end of a partition wall and the corner of a tall wardrobe are the interior corners. The tradition reads each as an edge with a line, and asks that nobody sleep, sit or work in that line. The remedies in order: move the seat or the bed out of the line; soften the edge, by rounding it, by standing a plant in front of it, by hanging a curtain or a textile down it; screen it, with a bookcase or a folding screen between the edge and the seat. The range at which a corner counts is short: the manuals’ own examples are an arm’s length from a pillow or a chair, and a corner across the room is a corner the eye has stopped reading as an edge.

Where the honest split falls

Inside a room the case is perceptible: a body can feel a beam a metre above it and see an edge an arm’s length from its shoulder. Outside, the tradition extends the same word to the corner of a building across the street, a road aimed at the front door, a pylon, a roof ridge, and asks for screening, planting or a deflecting device at the boundary. The reading is old and internally consistent with the landform logic it comes from, and the outside page gives it its due.

Checklist

Nothing structural across the bed, the desk chair or the main seat
If a beam cannot be avoided, along the body rather than across it
Hide what cannot be moved: false ceiling, canopy, fabric
Two metres thirty of ceiling over most of the room; two metres under anything that crosses a stair
Out of the line of a wall edge, a column or a furniture corner; round, plant or screen what stays
Symbolic cures named as such
Outside the window, screen for the view, not for the arrow