CMU stair and elevator shaft wall

A 2-hour block shaft wall, reinforced and grouted, with furring and board on the room side.

A 2-hour block shaft wall, reinforced and grouted, with furring and board on the room side.

Layers, in order

#LayerThicknessSpacing
110 in block and mortar9 5/8 in
2Grout and reinforcing6 5/8 inat 8 in o.c.
31 5/8 in furring studs1 5/8 inat 16 in o.c.
41/2 in FC60 gypsum board1/2 in

Build steps

  1. Lay the block (Mason). Flashing and weep vents at the base course, then the block in mortar, course by course.
  2. Reinforce and grout (Mason). Joint reinforcement as the block rises, bars in the cells, bond beam, grout.
  3. Frame the furring (Framer). Tracks and furring studs off the wall.
  4. Hang the board (Drywall). Board screwed to the studs, ready for tape and paint.

Materials per 100 sf of wall

From the takeoff of Setout's sample building, across every wall of this type on the typical floors, after doors and windows are cut out. Use it to sanity-check a bid, not as a substitute for a takeoff.

MaterialPer 100 sf
#5 vertical rebar (ASTM A615 Gr 60), incl. laps205 lf
10" CMU block, lightweight ASTM C90, standard units104 ea
Interior 1/2 in FC60 gypsum85.3 sf
9 ga 2-leg joint reinforcement, 16" o.c., 10" wall83.7 lf
#5 bond beam rebar, 2 continuous (ASTM A615 Gr 60), incl. laps24.7 lf
1-5/8 in furring main tracks21.4 lf
1-5/8 in furring stud layout positions @ 16" o.c.9.6 ea
10" CMU block, lightweight ASTM C90, bond beam units8.3 ea
#5 jamb rebar at openings (ASTM A615 Gr 60), incl. laps5.3 lf
#5 x 5'-0" L-bars at slab, 48" o.c.3.3 ea
Portland cement for Type S mortar, 94 lb bags3.2 ea
Hydrated lime for mortar, 50 lb bags1.3 ea
Fine grout, 4,000 psi (ASTM C476)1.3 cy
Mason sand for mortar0.35 cy

See it in 3D

Every wall and floor in Setout opens as an exploded build-up like this one, layer by layer, with the steps to build it. Try it on the sample building, or see how a Setout takeoff works.

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