Structural · E-22TPX

Column Block-Out and Slab Reinforcement Detail

Materials

Concrete Steel

Elements

Columns Floors / Slabs Expansion / Control Joints

Connections

Expansion / Slip Connection

About this detail

A structural concrete block-out surrounds a steel column with a minimum six-inch clearance, featuring alternating diamond-shaped control joints aligned with the slab-on-grade control joints. Interrupted slab reinforcement is replaced with additional bars equal in size and number, split equally to each side of the column with a minimum of one bar on each side and two-inch clearance to the edge of the block-out. Additional number four diagonal bars are placed at four sides at the mid-height of the slab. A half-inch expansion joint material spans the full depth of the slab from the top of the slab to the top of the footing. The block-out is filled with concrete no sooner than twenty-eight days after placing the slab on grade, and construction key joints are not required.

Members view this detail in full resolution, download the CAD files (SVG, PDF), and can adapt it in the built-in CAD editor — export DXF, DWG, or PDF.

Start membership

Similar details