---
title: "Half-Inch Trim (240)"
created: 2026-07-01
updated: 2026-07-01
type: concept
status: compiled
namespace: pattern-language
pattern_number: 240
pattern_name: "Half-Inch Trim"
source_repository: https://github.com/zenodotus280/apl-md
source_url: https://github.com/zenodotus280/apl-md/blob/master/Patterns/Half-Inch%20Trim%20%28240%29.md
license_note: Non-commercial reuse with attribution; see namespace README and source LICENSE.md.
related_patterns:
  - "Soft Inside Walls (235)"
  - "Lapped Outside Walls (234)"
  - "Box Columns (216)"
  - "Perimeter Beams (217)"
  - "Floor-Ceiling Vaults (219)"
  - "Frames as Thickened Edges (225)"
  - "Ornament (249)"
  - "Warm Colors (250)"
---

# Half-Inch Trim (240)

> Source pattern from the abridged `apl-md` corpus. Use as a design reference and constraint seed; do not treat as commercial-clean training data.

### Problem
>Totalitarian, machine buildings do not require trim because they are precise enough to do without. But they buy their precision at a dreadful price: by killing the possibility of freedom in the building plan.

### Solution
>Wherever two materials meet, place a piece of trim over the edge of the connection. Choose the pieces of trim so that the smallest piece, in each component, is always of the order of 1/2 inch wide. The trim can be wood, plaster, terracotta…

### Related Patterns
... and this pattern finishes the joints between [[Soft Inside Walls (235)]], or [[Lapped Outside Walls (234)]] and the various floors and vaults and frames and stiffeners and ornaments which are set into the walls: [[Box Columns (216)]], [[Perimeter Beams (217)]], [[Floor-Ceiling Vaults (219)]], [[Frames as Thickened Edges (225)]], and [[Ornament (249)]].

In many cases, you may be able to use the trim to form the ornaments - [[Ornament (249)]]; and trims may occasionally be colored: even tiny amounts can help to make the light in a room warm - [[Warm Colors (250)]].

---

> [!cite]- Alexander, Christopher. _A Pattern Language: Towns, Buildings, Construction_. Oxford University Press, 1977, p. 1112.
> #APL/confidence/high
>
> #APL/Construction-Patterns/Interior-Details