The sticks referred to the framing and the bricks referred to the exterior wall.
Steel framing is used exclusively for commercial construction and has been for many years.
Now residential contractors are beginning to use steel because steel has many advantages over wood products. Steel is lighter than wood by 60 percent and is a 100 percent recyclable. Steel is dimensionally stable eliminating the settling associated with other framing products reducing air infiltration and lowering utility bills. Steel comes in any length shape, size and thickness. Wood is undefined and has flaws, rots, is weak when wet, steel will not warp, crack, twist, bow, shrink, or swell and that leads to a more stable home.