Specifications include, but are not limited to: •Installation •Speed hump is to be constructed of asphalt top course, to a width 4 feet less than existing curb-to-curb width of pavement, leaving a 24-inch wide open area between outer most edge of speed hump and pavement edge for drainage purposes. •Use any method necessary to form parabolic shape and to achieve proper height of speed hump. One such proven method for forming parabolic shape of speed hump is to construct a template from minimum 16 foot long wooden 2x10, with center portion of bottom of template cut into basic parabolic shape of speed hump, leaving 2 foot flat area at each end of template. To stiffen and minimize any bending of template, attach metal channel for the length of top portion of template. •After initial placement of asphalt, before compaction and while asphalt is still fresh and pliant, form asphalt surface into basic parabolic shape using template. With flat ends of template resting on abutting pavement surface, drag or shimmy template across asphalt surface forming basic parabolic shape of speed hump. During compaction it may be necessary to remove excess or place additional asphalt material. Repeat template operation until speed hump is fully compacted and has achieved its proper height and shape. •Do not perform final rolling operation until required parabolic shape of each speed hump in turn has been verified in accordance with Subsection Construction Performance Standards. Seal transverse cuts on both side of the hump and longitudinal cut along the subside. •Permanent signage and pavement marking installation shall be the responsibility of the City of Pittsburgh. Contractor shall not open speed hump to traffic until installation of required warning signs is complete. If necessary, warning signs may be obtained from the Traffic Division at 2625 Liberty Avenue, Pittsburgh, PA 15222, and installed on temporary mounting until the Traffic Division can permanently install the signage.