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Masonry Garden Walls

             326   CHAPTER NINE








                                                                                  ENGLISH BOND
                                                                                  WITH EVERY
                                                                                  OTHER HEADER
                                                                                  BRICK OMITTED



                                                                                  ENGLISH BOND




               FIGURE 9-13
             English bond pattern screen wall with headers omitted to form pierced wall.



                                                        joints reduce the wall’s flexural stability
                       NOMINAL                          against wind loads and prevent the use of
                       2"    2"
                                                        joint reinforcement. An 8-in.-brick screen
                                                        wall should probably be limited to a maxi-
                                                        mum height of about 6 ft., with solid piers or
                                                        pilasters spaced about every 8 ft. The cours-
                                                        ing in the panel should overlap the coursing
                                     3 5 /8", NOMINALLY 4"
                                                        in the pier for maximum stability (Figure
                                                        9-4). Regardless of the exact design of a brick
                                                        screen wall, the bond pattern should pro-
                                                        vide continuous vertical paths for distribut-
                                                        ing loads to the foundation (Figure 9-14).
                                                           Clay screen tiles are decorative units
                                                        used to build masonry screen walls (Figure
               FIGURE 9-14                              9-15). These units are often available in
              ovide adequate mortar bedding for load distribu-  both cream-colored and red clays and pat-
             tion in brick screen walls.                terns that vary among different manufactur-
                                                        ers. Although no longer widely available,
                              these special units can create a unique wall design. A running bond pat-
                              tern which interlocks the individual units is stronger than a stack bond
                              pattern (Figure 9-16). Walls made from screen tile should not exceed 6
                              ft. in height, and they should be connected to piers or pilasters every 12
                              ft. or so with galvanized metal ties laid in the bed joints.



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