Concentrated loads - removing or altering walls

Structure · Joists · printed page 51 (PDF page 52)

Book index entries

Concentrated Loads in Structures Loads – Concentrated in Structures Removing or Altering Walls – Concentrated loads Structural

Text in the illustration

flat roof deck
new built-up wood beam
roof rafters
wall studs
new built-up wood column
old stud wall removed and replaced with beam/column arrangement
floor joists
blocking required
steel beam
foundation wall
cross section
new column
concrete floor slab
new footing
footing
when a wall is removed, the uniform load on the beam is converted to a concentrated load that must be carried all the way down to the footings (see shaded area of illustration) watch for solid blocking to transfer the load from the column above to the beam, and a new column below the beam

Generated explanation

The cross section shows a wood-framed building with a flat roof, floor joists, a basement steel beam, foundation walls, and a concrete floor slab. Dashed lines indicate a removed stud wall, replaced by a new built-up wood beam and wood column. The highlighted load path passes from the new wood column through required solid blocking in the floor framing to the steel beam below. A new column beneath the steel beam carries this concentrated load to a new footing. The illustration emphasizes that replacing a uniformly supporting wall with a beam-and-column arrangement requires continuous support down to the footings.

Components

flat roof deck roof rafters wall studs built-up wood beam built-up wood column floor joists solid blocking steel beam basement columns foundation walls concrete floor slab footings

Materials

wood steel concrete

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