A World of Solutions TM Falgout Canal Floodgate Structure Unbalanced Forces and Proposed Solutions October 2013

1 A World of Solutions TM Falgout Canal Floodgate Structure Status – Project is in preliminary engineering phase – Estimated completion is mid November 2013 Meeting Goals – Present findings of unbalanced load calculations – Discuss proposed methodology of engineering structure to accommodate unbalanced forces – Receive feedback from CPRA & proceed with preliminary design

A World of Solutions TM 2 Falgout Canal Floodgate Structure Unbalanced Force - Landing Structure

A World of Solutions TM 3 Falgout Canal Floodgate Structure Unbalanced Force in Landing Structure Global Stability Analyses Results Load Case Required Safety Factor for Global Stability Calculated Safety Factor for Global Stability Computed Unbalanced Force to Meet Criteria (lbs/ft.) Water to Top of Wall (EL.+18’) ,700 Still Water Level (EL.+15’) ,000

A World of Solutions TM 4 Slope/W Analysis Falgout Canal Floodgate Structure

A World of Solutions TM 5 Site Plan Falgout Canal Floodgate Structure

A World of Solutions TM 6 Group 2013 Analysis Falgout Canal Floodgate Structure

7 A World of Solutions TM Falgout Canal Floodgate Structure 1.Global Stability Analysis – Calculate factor of safety and failure surface using vertical water pressure only – Apply a resisting force until factor of safety meets criteria 2.Design Structure to Resist Unbalanced Load – Option 1 – Widen barge structure (Analyzed in Slope/W) – Option 2- Use cutoff wall, landing piles and receiving structure together (Analyzed in Group 2013 by Ensoft)

8 A World of Solutions TM Falgout Canal Floodgate Structure 1.Analyze global stability for SWL 2.Determine unbalanced force and failure plane EL 3.Perform preliminary design of gate landing foundation and receiving structure w/o unbalanced forces 4.Apply unbalanced force to gate landing foundation – Unbalanced force resisted by gate foundation alone 5.Apply static hydraulic forces to receiving structure w/o soil above failure surface – Hydraulic force resisted by receiving structure alone 6.Apply unbalanced force and hydraulic force to combined gate foundation and receiving structure – Unbalanced force + Hydraulic force resisted by gate foundation and receiving structure together Unbalanced Forces Outline

A World of Solutions TM 9 Falgout Canal Floodgate Structure Unbalanced Force

A World of Solutions TM 10 Falgout Canal Floodgate Control Structure Analyses Summary SWLTOW Analysis Case Δ (in)Pile Shear (K) Pile Bending Stress (Ksi) Δ (in)Pile Shear (K) Pile Bending Stress (Ksi) Rec./Hydraulic Landing W/ Unbalanced Force Landing + Rec. Hydraulic Load Landing + Rec. Hydraulic+ Unbalanced Load SWL Unbalanced Force187 KTOW Unbalanced Force722 K SWL Hydraulic Force1,730 KTOWL Hydraulic Force2,250 K

A World of Solutions TM 11 Conclusion Falgout Canal Floodgate Control Structure Unbalanced force can be resisted by cutoff wall combined with landing piles together Unbalanced force can be resisted by cutoff wall combined with landing piles together Hydraulic force can be resisted by the receiving structure Hydraulic force can be resisted by the receiving structure The connection of the cutoff wall and the landing piles together and the transfer of forces between the landing foundation and the receiving structure is by a pile cap at landing piles and/or through the gate structure. The connection of the cutoff wall and the landing piles together and the transfer of forces between the landing foundation and the receiving structure is by a pile cap at landing piles and/or through the gate structure.

A World of Solutions TM 12

A World of Solutions TM 13 Braced Wall Design