Load-bearing and non-load-bearing walls
Why the difference is invisible
Section titled “Why the difference is invisible”In a masonry house the load-bearing wall is thicker, and that shows through the finish. In a light gauge steel building both kinds of wall consist of steel sections and lining, often at a similar thickness.
The difference lies in the structural role, not in the appearance.
Where it actually differs
Section titled “Where it actually differs”Section and material thickness
Section titled “Section and material thickness”The sections of a load-bearing wall are thicker and often deeper. A partition can be built from drywall profile. Why not a drywall profile.
Restraint and screw fixing
Section titled “Restraint and screw fixing”In a load-bearing wall the spacing of the restraint and the screw pattern are designed values.
Anchorage
Section titled “Anchorage”The anchorage of a load-bearing wall, and of a bracing wall especially, is a designed connection to the foundation, with hold-down components. Hold-down anchorage.
Bracing role
Section titled “Bracing role”A wall can be “important” without carrying any vertical load: if it is part of the bracing system, it resists horizontal loads. Removing it is as serious as removing a load-bearing wall.
The practical consequence
Section titled “The practical consequence”Documentation is not optional
Section titled “Documentation is not optional”Since the difference cannot be seen, the drawings and the handover documentation are the only source. That is why they have to be kept. Handover documentation.
Alteration is always a question for the engineer
Section titled “Alteration is always a question for the engineer”Before demolishing a wall or cutting an opening, check what it does. This is not bureaucracy: removing a bracing wall affects the stability of the whole building. Later alterations.
Hanging things up is a different question
Section titled “Hanging things up is a different question”What you can hang on a wall does not depend on its load-bearing role but on where the fixing lands. What you can hang on the wall.
What to ask for at handover
Section titled “What to ask for at handover”A simple floor plan marking:
- which walls are load-bearing,
- which walls are part of the bracing system,
- where the anchorage points are,
- where the services run.
Those few pages save the owner decades of guesswork.
The point
Section titled “The point”“Non-load-bearing” does not mean “removable”. A bracing wall can be the key to stability while carrying not a gram of vertical load.