Building Standards Code Update Project Mitigating the Consequences of Flooding Presentation to the C

1
Building Standards Code Update Project
Mitigating the Consequences of Flooding
Presentation to the Central Valley
FloodProtection Board Ricardo Pineda, P.E.,
CFM, Floodplain Management Branch ChiefBrian
Walker, P.E., BSCUP Project Engineer
2
Meeting Objective Agenda

• Purpose To Provide the Board an Update on
  Project and Schedule
• Highlights of Building Standards Code Update
  Project (BSCUP)
• Schedule
• NRA and CBSC Submittal Packages
• Identify Next Steps

3
Health and Safety Code 50465

• 50465. (a) On or before January 1, 2009, the
  Department of Water Resources shall propose for
  adoption and approval by the California Building
  Standards Commission updated requirements to the
  California Building Standards Code for
  construction in areas protected by the facilities
  of the Central Valley Flood Protection Plan where
  flood levels are anticipated to exceed three feet
  for the 200-year flood event. The amendments to
  the California Building Standards Code shall be
  sufficient to reduce the risk of flood damage and
  protect life, safety, and the construction in
  those areas.
• (b) Before the department proposes the
  amendments to the California Building Standards
  Code required pursuant to subdivision (a), the
  department shall consult with the Central Valley
  Flood Protection Board, the Division of the State
  Architect, and the Office of the State Fire
  Marshal.

4
Collaboration Engagement

• The DWR Building Code Team has Briefed and
  Obtained input from
• Technical Advisory Committee (TAC) members in 5
  Meetings
• FloodSAFE Executive Management Team 5 Times
• Central Valley Flood Protection Board twice
• The Public - 4 Workshops
• Five State Agencies

5
Technical Advisory Committee (TAC) Participants

• CVFPB (Central Valley Flood Protection Board)
• DSA (Division of the State Architect)
• SFM (Office of the State Fire Marshal)
• HCD (Department of Housing and Community
  Development)
• BSC (Building Standards Commission)
• SWRCB (State Water Resources Control Board)
• CBIA (California Building Industry Association)
• AIA (American Institute of Architects California
  Council)
• SEAOC (Structural Engineers Association of
  California)
• OSHPD (Office of Statewide Health Planning and
  Development)

• FMA (Floodplain Management Association)
• USACE (U.S. Army Corps of Engineers)
• NFPC (National Flood Proofing Committee)
• NFIP (National Flood Insurance Program)
• MWH Consulting
• PBSJ Consulting
• IWC (Inter-West Consulting)
• CSBC (City of Stockton Building Division)
• SJBD (San Joaquin Building Department)
• Other organizations and agencies were contacted

6
BSCUP Highlights

• PROJECT DEVELOPMENT FLOW CHART (IN BRIEF)
• FLOOD THREATS TO PEOPLE
• OCCUPANCY GROUPS RELATED TO PEOPLE
• FINAL PROPOSED CODE UPDATE

7
Prioritization for 2009 Code Cycle
8
Flood Threats to People

• The proposed Code update for the upcoming Code
  cycle primarily increases public safety for
  persons who cannot or do not evacuate region
  prior to flood
• Future Code updates should address damage
  reduction of buildings more completely

9
Flood Threats to People (2)

• Four Chief Threats were previously identified
  to be addressed this Code cycle
• BC Team determined that 1 and 2 can be
  accomplished now
• Chief Threats 3 and 4 require significant
  coordination and input or research. Recommend
  addressing next cycle

1
2
3
4
(from Process Flow Chart)
10
Occupancy Groups Related to People

• Building Occupancy Groups are selected to best
  address risk of vulnerable dependent persons.
  These groups are Educational, Residential
  Institutional
• Additional benefit to average homeowner in
  Residential buildings
• DWR can expand scope in future Code cycles
• R-3 ( R-3.1) and E are the appropriate OGs to
  propose as Mandatory Code to address risk of
  vulnerable dependent persons and maximize
  adoption of proposal to Code

(from Process Flow Chart)
11
What Types of Buildings are Included?

• Mandatory
• Schools (Group E)
• Single family homes (Group R-3)
• Residential care facilities with 6 or fewer
  clients (Group R-3.1)
• Voluntary
• Medical, care facilities, and assisted living
  facilities (Group I)
• Remainder of Group R, such as hotels and
  apartments

12
2009 Proposed Code Update

• The proposal, if adopted, will minimize likely
  and mortal danger to persons who otherwise may
  not have a Flood Evacuation Location
• The Flood Evacuation Location requirements are
• Designed to allow flexibility and creativity (see
  examples)
• Appropriately restrictive (e.g. minimum sizing,
  egress, etc)
• Consistent with existing Code requirements
  regarding accessibility (i.e., ADA) requirements
• Cost Conscious

13
Example 1
Single Story Residential with Five Options,
Depending on Flood Water Depth. (There is only 1
Water Depth at a Particular Site)
WSEL200
WSEL200 represents the Water Surface
Elevation for the 200-year Flood Event. Design
Options Available will Always depend on Flood
Depth.
14
Example 2Evacuation Location on Residential
Roofs or Attics
15
Example 3 Use FEMA/NFIP Approach
Elevate one-story home above a garage or
storage space. Technically, this is a two-story.
This approach is required if in the FEMA mapped
100-year floodplain Significantly minimizes
threat to persons (who could not evacuate region
had to be home) and home damage.
16
Example 4
The owner may feel more comfortable evacuating to
a flat terrace or balcony than on rooftop or in
attic. This rooftop Evacuation Location can
often serve as amenity.
17
Example 5If a Single-Story is Desired but it
Would Be Fully Inundated

• If local Building Official and other necessary
  officials (e.g., RD or LD manager) sign off on
  Alternate Means of Protection plan offered by
  Owner/Developer of a Single-Story Planned
  Community, for example, then a Multi-Story
  Community Center may serve as the Evacuation
  Location.
• Some Considerations
• Planned Community is Not Close to Levee
• Homes are Close to Community Center
• Robust Hazard (Flood) Warning System in Place

18
Example 6
19
ScheduleMust Submit toCBSC byJuly 1, 2009
20
SCHEDULE - BUILDING STANDARDS CODE UPDATED
PROJECT
The CBSC 2009 Annual Code Adoption Cycle Begins
July 1, 2009. Proposals that are Adopted Become
Effective January 1, 2011.
21
Natural Resource Agency (NRA)California
Building Standards Commission(CBSC)Submittal
Packages
22
NRA CBSC Submittal Packages

• The Submittal Packages are Identical and Include
• DWR Directors Decision Memo
• Proposed Code Update (Express Terms), 3 Parts
  (by Occupancy Group)
• Narrative Document to Explain Code
• Initial Statement of Reasons
• 9-Point Criteria
• Supporting Documentation
• Example Illustrations of Buildings Meeting
  Proposed Requirements

23
Next Steps

• The BC Team to Submit Packages to
• NRA on Wednesday, May 20th
• CBSC by May 27th (Courtesy Review)
• CBSC by June 30th (Official Submittal)

Beginning July 1, 2009, the BC Team Continues
Carrying Proposal in the CBSC Code Adoption
Cycle.
24
Questions or Comments?
For more information http//www.water.ca.gov/flo
odsafe http//www.water.ca.gov/BuildingCodeUpdate
25
Mitigating the Consequences of Flooding
California Building Standards Code Update Project
THANK YOU