Steel Door Inc.

Standard Steel Doors and Frames for Modular Masonry Construction

SDI 110-09

The Module

Definition:

The size of any individual part, taken as a unit of measure for regular proportion. A basic unit of measure adopted by the building industry as 4 inches.

Concept:

The use of a standard modular dimension common to building products such as masonry improves finished buildings and structures in the following ways:

  • Increased accuracy, legibility, and simplicity of contract documents.
  • Added aesthetic flexibility induced by small unit standardization, allowing freedom of architectural design.
  • Increased flexibility of finished structure through lower modification, addition, and renovation costs.
  • Reduced overall material and labor costs by facilitating the use of standard practices and definable operating procedures.
  • Interchangeability of materials is facilitated by the ability to substitute modular components.
  • Estimating and takeoff simplified.
  • Detailing and drawing coordination between trades and specialties simplified by small size standard grid.

Dimensions:

Concrete masonry units (CMU) have been standardized to a nominal 8″ high and 16″ long module.

Modular bricks have been standardized to a nominal 2 2/″ high and 8″ long module, therefore 6 bricks correspond to the modular size of CMU. This relationship is clearly shown on the following pages.

Frame Installation in Cast-In-Place Concrete Walls

While the use of hollow metal frames in cast-in-place concrete walls is a common construction practice, the SDI does not recommend the inclusion of the frame as part of the process of pouring the wall. Instead, a roughopening should be blocked out no less than 3/16″ (4.8 mm) larger than the frame on all three sides. For example the opening for a 3′0″ x 7′0″ standard frame with 2″ faces would be 3′ 4-3/8″ x 7′ 2-3/16″ minimum. The installer is responsible for anchoring the frame per the manufacturer’s installation instructions, shimming and aligning as necessary.

Wrap Around Frame

6' 8" Door or 8' 0" Door

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Wrap Around Frame

7' 0" Door

Butt Type Frame

7′ 0″ Door with 4″ Header or 7′ 2″ and 7′ 10″ Doors with 2″ Header

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