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Masonry Veneer



                                                   SKEWBACK      CROWN     EXTRADOS





                                                                                ABUTMENT
                                                    AXIS
                                                    SOFFIT
                                                      INTRADOS





                                                        SEGMENTAL ARCH
                                                     SKEWBACK

                                        DEPTH                    CAMBER







                                                             SPAN




                                                          JACK ARCH
                                                            DEPTH






                                                              RISE
                                                   ARCH AXIS
                                                                   SPRING LINE




                                                             SPAN



                                FIGURE 7-16
                              Arch terminology. (from Beall, Christine, Masonry Design and Detailing, 4th edition,
                              McGraw-Hill, New York).




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