1. Council Bluffs Value Engineering Workshop
Industrial Park Levee Accreditation
Value Engineering Workshop
Kyle Tonjes, P.E.
Jared Olson, P.E.

2. Industrial Park Levee (IPL) Background Information and 2011 Flood Fight

3. Industrial Park Levee (IPL)
204+00
224+00
236+00
244+00 A B C D
253+00

4. Inland Flooding Between IPL and Federal Levee

5. IPL at Ameristar

6. IPL at Warren and Cargill

7. Levee Segment A Re-align levee for flood fight access
Original Study Recommendations:
Re-align levee for flood fight access
Armor riverward levee slope
Remove concrete barriers
Increase levee height (station )
Improve interior drainage and replace drainage pipes through levee
New Levee Alignment

8. Levee Segment B Remove concrete retaining wall and metal bin wall
Original Study Recommendations:
Remove concrete retaining wall and metal bin wall
Extend levee top landward
Raise earth embankment
Improve interior drainage and replace drainage pipe through levee

9. Levee Segment C Embankment protection Sheet pile wall
Original Study Recommendations:
Embankment protection
Sheet pile wall
Regrade levee slope to 3:1
Riprap to
normal high
river level
Gravel above normal high

10. Levee Segment D New levee alignment
Original Study Recommendations:
New levee alignment
Fill boat slip or construct floodwall on west side of boat slip
Blue line not animate. Check location of blue line. First build photos, fade out blue line

11. Value Engineering of Original Study

12. Proposed VE Work Plan TASK 1 TASK 2 TASK 3 PRE-WORKSHOP Deliverables:
Preparation Phase
Orientation Memo
Team Member Homework Research
Cost Estimating
Deliverables:
Detailed VE Workshop Agenda
Homework Assignments
TASK 1
VE WORKSHOP
Information Phase
Function Analysis Phase
Creative Phase
Evaluation Phase
Development Phase
Presentation Phase
Deliverables:
Preliminary VE Report
Oral debriefing to owner and designer
TASK 2
Deliverables:
Help owner/designer decide on VE Proposals’ disposition
Final VE Report
POST-WORKSHOP
Owner/Designer Review of VE Comments
Implementation Meeting
Preparation of Final Report
TASK 3

13. VE Team

14. Workshop: Information Phase
Activities
Presentation of original study background and findings by the City
Q & A discussion between workshop participants, City, and levee sponsors
Site tour with levee sponsors
Outcomes
Design Criteria: FEMA 44 CFR accreditation adequate vs. USACE ETL and inclusion in PL program
List of goals and expectations for the levee program
List of major issues as viewed by the sponsors
Task 2
VE Workshop

15. Workshop: Function Phase
Activities
Break down the project into basic functional
Outcomes
Five basic functions were identified for the levee project
Stabilize Embankment
Protect Embankment
Increase Freeboard
Prevent Backflow
Drain Stormwater
Task 2
VE Workshop

16. Workshop: Creative Phase
Activities
Brainstorming of ideas for each function group
Judgment of ideas is discouraged at this point, a wide range of ideas is sought
Not judging ideas immediately is difficult, but doing so keeps the creative process flowing
Outcomes
Development of a long list of ideas for each function group aimed at enhancing the original study proposals
At this point the list of ideas is raw, some items may be duplicated under multiple function groups, etc.
Task 2
VE Workshop

17. Workshop: Judging Phase
Activities
Develop screening criteria
Increase level of protection
Potential to minimize cost
Strong technical solution
Potentially acceptable to levee Sponsors and does not impact operations
Enhances O&M
Each VE Team member evaluates each idea based on screening criteria and votes for ideas that should be further considered
Members may also reject ideas that are not believed to satisfy a majority of the screening criteria
The facilitator then leads a discussion to resolve conflicts
Task 2
VE Workshop

18. Workshop: Judging Phase (Cont)
Outcomes
List of ideas that will be carried forward for further development and cost estimating
Ideas can be grouped and combined
Rejected items are dropped
Some items are judged to be equivalent to the original design (report)
Some ideas are classified as future design suggestions
Ideas that would normally be incorporated into or considered during a levee design
Ideas that had minor cost implications would be better known during detailed design
Cost implications were minor but have potential to affect O&M positively or negatively.
Task 2
VE Workshop

19. Workshop: Development Phase
Activities
Develop the concept for each chosen idea into a complete VE Proposal
Develop full proposal description and advantages and disadvantages
Estimate quantities
Estimate cost and compare to original study
Prepare sketches or other backup information to document the proposal
Group compatible proposals
Outcomes
List of fully developed VE proposals and the cost implications of each
The proposals were presented to the levee Sponsors and the City at the end of the Workshop
Task 2
VE Workshop

20. Major VE Proposals

21. High Ground Option
Certify Ameristar Hotel area as high ground (LOMR-F)
All areas where structural fill was placed to required height above 100-year WSE
Levee ties in at south and east sides of high ground
Eliminates concerns about utility locations
Will require verification that basement meets “flood-proofing” requirements

22. Other Proposals Reconstruct drainage pipes through levee
This is consistent with original study
Eliminate sheet pile toe wall along Ameristar in Segment C
Review of topographic survey and bathymetric survey shows 3:1 slope achievable without sheet pile
Seed riverward slopes in Segments A & B instead of armoring with gravel/cobble
Velocities appear low enough above normal high bank to not require slope protection beyond seeding
Do not move levee west in Segment A
Building clearances from levee toe adequate for 44 CFR 65-10

23. Discussion/Questions