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Paving

                                                                                             307
                                                                                     PAVING



                                        3'-4"


                      8"       8"        8"       8"        8"






                                                                      12"  TREAD






                                     PAVERS LAID FLAT








                      8"       8"        8"       8"        8"





                                                                    ALTERNATE
                                                                    CORNER
                                                                    DETAIL





                                   PAVERS LAID ON EDGE

                                    TOP VIEW OF TREADS
                                                                   FIGURE 8-30

             Alternate tread layouts for brick steps.

             a leveling bed to compensate for minor irregularities in the base. If the
             soil is naturally well drained and stable, the sand bed for sidewalks
             and patios can be placed directly on the excavated subgrade. If the
             natural drainage is poor or the soil is soft, you will need a gravel
             drainage base below the sand bed. The required thickness of the gravel



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