Kassel & Associates 9/29/2017 Change Order 2

Project: WFP Operations Building Seismic Retrofit -Rebid Change Order No.002 Change Order Effective Date: 9/15/17 a man door. The angle would have created a trip hazard at the doors. Additionally, because of the doors, there was no wall to attach the vertical leg of the angle. An FRP strip was designed and installed in lieu of the angle to avoid a tripping hazard and to mitigate the missing wall. Work Change Directive—No. 012 —Additional Labor to Investigate Non-Grouted Cells: WCD—No. 012 was agreed to in the lump sum amount of$744.00 and the addition of 1 -Working Day. Justification: - The design of the seismic strengthening required a minimum spacing of 4-feet for grouted cells and an average grout depth of 8-inches in the precast floor panels for the second floor of the Operations Building. After it was discovered that some cells were missing grout or only partially grouted, additional investigation of the cell grouting was required. The contactor provided equipment and labor to drill into the floor panels so the City could confirm the presence and depth of grout in the cells. Work Change Directive—No. 013 — Provide 4-inch Seismic Joints In Lieu of 3- Inch: WCD-013 was agreed to in the lump sum amount of$2289.00 and the addition of 1-working day. Justification: - The contract plans called for installing 3-inch diameter flexible seismic joints on the four vent pipes for the alum and polymer storage tanks. During construction, the vent piping was found to be 4-inches in diameter. WCD-013 provided a material only credit for the 3-inch diameter seismic joints and paid for the material only costs of the 4-inch diameter seismic joints. Work Change Directive—No. 014 Hollow Core Panel Grouting: WCD-014 is a lump sum revision of$7,340.87 and the addition of 10-working days. Justification: The contract drawings and recorded drawings, for the Operations Building, show the cells in hollow core floor panels to be grouted. It was discovered during construction, that the majority of the cells were either partially grouted or not grouted at all. The design of the seismic reinforcing was revised to account for the partially grouted or non-grouted cells. The anchor bolt installation was modified and empty cells in the floor panels were grouted. Work change directive covers the additional costs to modify the anchor bolts and grout the empty cells. Work change directive 014 is an extension of work change directive 003. The amounts paid in work WFP Operations Building Seismic Retrofit-Rebid September 15,2017 WO#UP3600 006363 -4