Page 322 - Planning and Design of Airports
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280     Airp o r t  D e sign



             Type   Description  Longitudinal        Transverse
             A      Thickened   Use at intersections   Use at pavement feature
                    edge isolation  where dowels are not   intersections when the
                    joint       suitable and where   respective longitudinal
                                pavements abut       axis intersects at an
                                structures. Consider   angle. Use at free edge
                                at locations along a   of pavements where
                                pavement edge where   future expansion, using
                                future expansion is   the same pavement
                                possible.            thickness is expected.
             B      Hinged      For all contraction joints   Not used.
                    contraction  in taxiway slabs <9 in
                    joint       (230 mm) thick. For all
                                other contraction joints
                                in slabs <9 in (230 mm)
                                thick, where the joint is
                                placed 20 ft (6 m) or less
                                from the pavement edge.
             C      Doweled     May be considered for   May be considered for
                    contraction  general use. Consider   general use. Use on the
                    joint       for use in contraction   last three joints from a
                                joints in slabs >9 in   free edge, and for three
                                (230 mm) thick, where   joints on either side of
                                the joint is placed 20 ft   isolation joints.
                                (6 m) or less from the
                                pavement edge.
             D      Dummy       For all other contraction   For all other contraction
                    contraction  joints in pavement  joints in pavement.
                    joint
             E      Doweled     Doweled construction   Use for construction
                    construction   joints excluding isolation  joints at all locations
                    joint       joints.              separating successive
                                                     paving operations
                                                     (“headers”).
            TABLE 7-6  Pavement Joint Types


                 steel within the pavement, thickness design of CRCP is identical to
                 other rigid pavement types.
                    The advantages for placing steel in PCC pavements include:
                     1.  Reducing the number of required joints between slabs, result-
                        ing in decreased maintenance costs
                      2.  Prolonging service life when pavement is overloaded
                      3.  Reducing pavement deflection
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