Ariston Pacific, Inc. 5/9/2016 - Laserfiche WebLink

I 1 The Contractor shall determine if girder bracing to control lateral bending during I 2 shipping is required and shall provide it if necessary. When bracing is required, the 3 Contractor shall submit a girder shipping plan with supporting calculations conforming to 4 the criteria specified below as a Type 2E Working Drawing. The Contractor shall 5 perform all bracing operations at no additional cost to the Contracting Agency. I6 7 Criteria for Girder Stresses and Stability for Handling, Shipping and Erecting: 8 Girder stresses and lateral stability shall conform to the requirements of the WSDOT 19 Bridge Design Manual LRFD (M23-50) including Sections 5.2.1.C, 5.6.2.C.2 and 5.6.3. 10 11 6-02.3(25)N Prestressed Concrete Girder Erection I 12 This section is revised to read: 13 14 Before erecting any prestressed concrete girders, the Contractor shall submit an I 15 erection plan as a Type 2E Working Drawing. The erection plan shall conform to the 16 Criteria for Girder Stresses and Stability for Handling, Shipping and Erecting in 17 Section 6-02.3(25)M. The erection plan shall provide complete details of the erection I 18 19 process including at a minimum: 20 1. Temporary falsework support, bracing, guys, deadmen, and attachments to 21 other Structure components or objects; I 22 23 2. Procedure and sequence of operation; 24 1 25 3. Girder stresses during progressive stages of erection; 26 27 4. Girder weights, lift points, lifting embedments and devices, spreaders, and I 28 29 angle of lifting cables in accordance with Section 6-02.3(25)L, etc.; 30 5. Crane(s) make and model, mass, geometry, lift capacity, outrigger size, and I 31 reactions; 32 33 6. Girder launcher or trolley details and capacity (if intended for use); and I 34 35 7. Locations of cranes, barges, trucks delivering girders, and the location of 36 cranes and outriggers relative to other Structures, including retaining walls and 37 wing walls. 1 38 39 The erection plan shall include drawings, notes, catalog cuts, and calculations clearly 40 showing the above listed details, assumptions, and dimensions. Material properties and I 41 Specifications, structural analysis, and any other data used shall also be included. 42 43 The concrete in piers and crossbeams shall reach at least 80 percent of design strength I 44 before girders are placed on them. 45 46 The Contractor shall hoist girders only by the lifting embedments at the ends, always I 47 keeping the girders plumb and upright. When the girders are to receive a cast-in-place 48 concrete deck, lifting embedments shall be removed after erection to provide a 49 minimum 214-inch clearance to the top of the deck. When the girders are not to receive 50 a cast-in-place concrete deck, lifting embedments shall be removed 1-inch below the 51 girder surface and grouted with an epoxy grout conforming to Section 9-26.3(1)A. 52 I I AMENDMENTS TO THE 2014 STANDARD SPECIFICATIONS BOOK Revised: 8/3/15