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Structural Masonry Systems
Grouted Cavity Wall System (A Case Study)
Skagit County Administration Building - South Wall
Court view looking south.
Brick was the natural material for this public building because of these qualities:
- Relationship to existing brick County Buildings.
- Permanence.
- Ease of maintenance.
- Flexibility of small units in construction of a round wall.
- Noise reduction of the double wythe wall at a busy intersection.
- Thermal insulating qualities of double wythe wall at South exposure.
- Speed of construction. The double wythe brick wall proved to be a faster and more efficient building method than a similar poured concrete wall.
- Aesthetic interest and scale of the long west wall uninterrupted by openings and close to pedestrians. To increase the variety in the brick at close range, flash marks made by cross stacking in the kiln introduced shades of color and texture.
Detailed Description ofCavity Wall
Brick:
- Standard brick, 3-1/2 x 71/2 x 2-1/2 actual face dimension. Selection limited to middle color range.
Some special shapes.
- Type M for reinforced brick.
Type S for veneer.
- 3/8" stuck flush with stick and wet sponged.
Grout: 2500 psi; reinforcing grout poured in lifts 4' or less as exterior and interior brick walls are completed.
- 2 coats of clear water repellent.
The NW Masonry Guide Table of Contents
Masonry Institute of Washington
Washington State Conference of Mason Contractors
