Load path

A load path is the continuous route that building loads take from where they are applied, roof, floors, wind, occupants, down through the structure to the founding soil. Every load has to get to the ground, and a break anywhere in the path (a missing tie-down, an undersized beam, an unsupported strut) is a structural failure point.

The idea is simple but it governs everything structural: a load applied high up must be carried by a continuous chain of members and connections all the way down. For example, roof load goes rafters → beams/struts → walls or posts → footings → soil. Wind load (a lateral load) goes cladding → bracing → through the structure → into the footings and ground. The structure works only if every link, and every connection between links, can carry the load and pass it on.

There are really two load paths to keep continuous:

• the vertical (gravity) path: weights down to the footings, and
• the lateral path: wind and (in some areas) earthquake forces resolved into the bracing and down to the ground, including the uplift path that tie-downs hold against.

For a builder the practical points are that the engineer’s design assumes a continuous load path, so the things that look optional often are not: bracing, tie-down straps and bolts, the connections at each junction, the strut landing on something solid, the beam that picks up a removed wall. Cutting, omitting, or improvising any of them breaks the path. The classic renovation failure is removing a wall (a link in the path) without carrying its load elsewhere first. When in doubt, ask: where does this load go next, all the way to the ground?

Also known as: Load transfer path, structural load path.

Category: Structure / Principles.

Related

• Structural engineer
• Tie-down

See also

• Load-bearing wall

References

• Tie-down (Chalkline) (verified 2026-06-04)

---

Last updated: 2026-06-04. Verified: 2026-06-04. Quarterly review for currency.