Home building guide · Structure

Joist

One of a series of parallel horizontal members that support a floor or ceiling.

Joist: illustration
Illustration

What it is

Joists span between beams or walls and carry the floor boards or ceiling above. They are common in timber and steel construction. In traditional Madras terrace roofs, wooden joists carry the brick-and-lime roof.

Key points

  • Timber, steel or precast concrete
  • Spaced evenly across the span
  • Depth depends on span and load
  • Common in older and lightweight construction

Why it matters

Most new Chennai homes use RCC slabs instead, but you will meet joists in older homes and in renovation work.

How Elamentt handles it

When we renovate older homes, we check existing joists for rot, termites and sagging before planning new loads.

Next step

See it on your
own plot.

Our studio turns your plot size into a plan, a 3D model built stage by stage, and a list of the cement, steel, bricks and sand it needs. Or ask an engineer.