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CITY OF SANTA ANA <br />SPECIFICATIONS <br />PROJECT NO.: XX-XXXX <br /> PROJECT TITLE <br /> <br />15 <br />5-7 SAFETY <br />5-7.8 Steel Plate Covers <br />5-7.8.1 General <br />Add the following to this subsection: <br />When backfilling operation of an excavation in the travel way, whether transverse or longitudinal <br />cannot be properly completed within a work day, steel plate bridging with a non-skid surface and <br />shoring may be required to preserve unobstructed traffic flow. <br />5-7.8.2 Thickness <br />Add the following to this subsection: <br />For spans greater than five (5) feet-three (3) inches, a structural design for the steel plate <br />bridging shall be prepared by a California registered civil engineer and approved by the <br />Engineer. Steel plate bridging shall be designed for HS20-44 truck loading per Caltrans Bridge <br />Design Specifications Manual. The Contractor shall maintain steel plates with a non-skid surface <br />having a minimum coefficient of friction equivalent to 0.35 as determined by California Test <br />Method 342. The contractor may use standard steel plate with known coefficient of friction equal <br />or exceeding 0.35. <br />5-7.8.3 Installation <br />Add the following to this subsection: <br />The following shall apply: <br />1. Steel plate installation shall be recessed by milling existing pavement to set flush with <br />finish grade. <br />2. Steel plate shall fit snug and installed to operate with minimum noise. Bridging shall be <br />secured against displacement. <br />3. Steel plate used for bridging must extend a minimum of twelve (12") inches beyond the <br />edge of the trench. <br />4. The pavement shall be cold planned a depth equal to the thickness of the plate and to a <br />width and length equal to the dimensions of the plate. <br />Multiple steel plates shall be butted and tack welded as needed to secure plates 6” minimum. <br />The trench shall be adequate to support the bridging and the traffic load. Contractor shall be <br />responsible for determining whether shoring is necessary. The Contractor shall be responsible <br />for the appropriate selection and maintenance of the steel plates, and shoring. <br />Unless specified, steel plate bridging at any given location shall not exceed four (4) consecutive <br />working days in any given week. Backfilling of excavation shall be covered with a minimum of <br />three (3) inches of temporary layer of cold asphalt concrete. <br />505 E Central Ave <br />#B11/6/2024