Coastal Construction Manual - National Ready Mixed Concrete ...

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INVESTIGATING REGULATORY REQUIREMENTS 5 designations; and BFE contours throughout the SFHA. FIRMs in coastal areas may also show the LiMWA. Communities can use the information provided in FIS reports and FIRMs to manage SFHA development. At the same time, FEMA uses the FIS and FIRMs to establish insurance premiums for houses and other buildings. The information pertaining to the BFE and the flood zone at the building site are of particular importance for a coastal construction project. 5.2.3 Minimum Regulatory Requirements The floodplain management ordinances or laws adopted by communities that participate in the NFIP must meet or exceed the minimum NFIP regulatory requirements set forth at Title 44 of the Code of Federal Regulations (CFR) Section 60.3 (44 CFR § 60.3). Community floodplain management regulations include requirements in the SFHA that apply to new construction, substantially improved buildings, and substantially damaged buildings in both Zone A and Zone V. Additional requirements apply to new subdivisions and other development in the SFHA. The minimum NFIP requirements for new construction, substantially improved, and substantially damaged buildings affect the type of foundation that can be used, establishes the required height of the lowest floor to or above the BFE, establishes the criteria for the installation of building utility systems, requires the use of flood damage-resistant materials, and limits the use of the area below the lowest floor. In recognition of the greater hazard posed by breaking waves 3 feet high or higher, FEMA has established minimum NFIP regulatory requirements for Zone V buildings that are more stringent than the minimum requirements for Zone A buildings. Therefore, the location of a building in relation to the Zone A/Zone V boundary on a FIRM can affect the design of the building. In that regard, it is important to note that if a building or other structure has any portion of its foundation in Zone V, it must be built to comply with Zone V requirements. The following sections summarize the minimum NFIP requirements (for the exact wording of the regulations, refer to 44 CFR § 60.3): Section 5.2.3.1 describes the minimum requirements that apply throughout the SFHA. Sections 5.2.3.2 and 5.2.3.3 describe requirements specific to Zone A and Zone V, respectively. 5.2.3.1 Minimum Requirements in All SFHAs WARNING Communities participating in the NFIP are encouraged to adopt and enforce floodplain management ordinances or laws more stringent than the minimum requirements of the NFIP regulations. For example, some States and communities require that buildings be elevated above rather than simply to the BFE. The additional elevation is referred to as freeboard (see Figure 5-4). Check with local floodplain managers and building officials concerning such requirements. WARNING The guidance in this <strong>Manual</strong> was not specifically developed for manufactured housing. For NFIP requirements concerning manufactured housing, refer to 44 CFR Section 60.3 and FEMA P-85, Protecting Manufactured Homes from Flood and Other Hazards, A Multi-Hazard Foundation and Installation Guide (FEMA 2009a). The minimum NFIP floodplain management requirements for all SFHAs affect buildings, subdivisions and other new development, new and replacement water supply systems, and new and replacement sanitary sewage systems. These requirements, set forth at 44 CFR § 60.3(a) and (b), are summarized in Table 5-1. COASTAL CONSTRUCTION MANUAL 5-7
5 INVESTIGATING REGULATORY REQUIREMENTS Table 5-1. General NFIP Requirements Activity New <strong>Construction</strong>, Substantial Improvement, and Repair of Substantially Damaged Buildings New Subdivisions and Other New Developments New and Replacement Water Supply Systems New and Replacement Sanitary Sewage Systems General NFIP Requirement in All SFHAs • Communities shall require permits for development in SFHAs and shall review permit applications to determine whether proposed building sites will be reasonably safe from flooding. • Buildings shall be designed (or modified) and anchored to prevent flotation, collapse, and lateral movement resulting from hydrodynamic and hydrostatic loads, including the effects of buoyancy. • Buildings shall be constructed with materials resistant to flood damage. • Buildings shall be constructed with methods and practices that minimize flood damage. • Buildings shall be constructed with electrical, heating, ventilation, plumbing, and air conditioning equipment and other service facilities that are designed and/or located to prevent water from entering or accumulating within their components during flooding. • Communities shall obtain and reasonably use any BFE and floodway data available from other sources for SFHAs for which the FIRM does not provide BFEs or floodways. • Communities shall review proposals for subdivisions and other new developments to determine whether such proposals will be consistent with the need to minimize flood damage within flood-prone area. • Proposals for new subdivisions and other new developments greater than 50 lots or 5 acres, whichever is less, and for which BFEs are not shown on the effective FIRM shall include BFE data. • Public utilities and facilities, such as sewer, gas, electrical, and water systems for new subdivisions and other new developments shall be located and constructed to minimize or eliminate flood damage. • Adequate drainage shall be provided for new subdivisions and new developments to reduce exposure to flood hazards. • New and replacement water supply systems shall be designed to minimize or eliminate infiltration of flood waters into the systems. • New and replacement sanitary sewage systems shall be designed to minimize or eliminate infiltration of flood waters into the systems and discharges from the systems into flood waters. • On-site waste disposal systems shall be located to avoid impairment to them or contamination from them during flooding. Floodplain management regulations apply to new construction, substantially improved buildings, and substantially damaged buildings located within the SFHA. FEMA has two resources to assist State and local officials with NFIP requirements: FEMA P-758, Substantial Improvement/Substantial Damage (SI/SD) Desk Reference (FEMA 2010a) and the FEMA P-784 Substantial Damage Estimator (SDE) software (FEMA 2010b). FEMA P-758 is intended to be used by local officials responsible for administering local codes and ordinances, including requirements related to substantial improvement and substantial damage. It also is intended for State officials who provide NFIP technical assistance to communities. FEMA P-758 provides practical guidance and suggested procedures to implement the NFIP requirements for substantial improvement and repair of substantial damage. 5-8 COASTAL CONSTRUCTION MANUAL
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Coastal Construction Manual Princip
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All illustrations in this document
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1 CHAPTER TITLE COASTAL CONSTRUCTIO
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CONTENTS Volume I 2.2.7 Pacific Coa
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CONTENTS Volume I Chapter 4. Siting
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CONTENTS Volume I List of Figures C
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CONTENTS Volume I Figure 3-11. Figu
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CONTENTS Volume I Figure 3-53. Typi
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CONTENTS Volume I List of Tables Ch
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1 INTRODUCTION International (BOCA)
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1 INTRODUCTION TERMINOLOGY: DESIGN
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1 INTRODUCTION be indicated once th
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1 INTRODUCTION systems, application
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1 INTRODUCTION Zone V. Portion of t
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HISTORICAL PERSPECTIVE 2 Figure 2-1
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HISTORICAL PERSPECTIVE 2 2.2.2 Mid-
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HISTORICAL PERSPECTIVE 2 of continu
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HISTORICAL PERSPECTIVE 2 High winds
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HISTORICAL PERSPECTIVE 2 2.2.8 Hawa
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HISTORICAL PERSPECTIVE 2 1. Waves 1
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HISTORICAL PERSPECTIVE 2 access. Th
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HISTORICAL PERSPECTIVE 2 Foundation
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HISTORICAL PERSPECTIVE 2 corrosion
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HISTORICAL PERSPECTIVE 2 Failure to
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HISTORICAL PERSPECTIVE 2 Two other
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HISTORICAL PERSPECTIVE 2 FEMA (Fede
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IDENTIFYING HAZARDS 3 few thousandt
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IDENTIFYING HAZARDS 3 Figure 3‐3.
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IDENTIFYING HAZARDS 3 shoreline are
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IDENTIFYING HAZARDS 3 Table 3‐1.
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IDENTIFYING HAZARDS 3 Coastal storm
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IDENTIFYING HAZARDS 3 Figure 3‐7.
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IDENTIFYING HAZARDS 3 Figure 3‐11
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IDENTIFYING HAZARDS 3 Hardened buil
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IDENTIFYING HAZARDS 3 non-ductile c
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IDENTIFYING HAZARDS 3 the other haz
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IDENTIFYING HAZARDS 3 Land uplift i
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IDENTIFYING HAZARDS 3 3.3.4.7 Wildf
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IDENTIFYING HAZARDS 3 3.4.3 Waves W
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IDENTIFYING HAZARDS 3 3.4.4 Flood
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IDENTIFYING HAZARDS 3 one of erosio
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IDENTIFYING HAZARDS 3 Erosion durin
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IDENTIFYING HAZARDS 3 of the inlet
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IDENTIFYING HAZARDS 3 3.5.2.3 Erosi
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IDENTIFYING HAZARDS 3 and groundwat
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IDENTIFYING HAZARDS 3 3.5.2.5 Local
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IDENTIFYING HAZARDS 3 3.6.2 Flood I
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Page 201 and 202: FUNDAMENTALS OF RISK ANALYSIS AND R
Page 217 and 218: ACRONYMS Volume I CFR CRS CZM CZMA
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Volume I GLOSSARY Coastal A Zone -
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Volume I GLOSSARY DFE is identical
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Volume I GLOSSARY Flood Insurance S
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Volume I GLOSSARY Interior mechanic
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Volume I GLOSSARY Metal roof panel
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Volume I GLOSSARY Pressure-treated
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Volume I GLOSSARY the installation
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Volume I GLOSSARY V Variance - Unde
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Volume I INDEX Coastal A Zone, 1-10
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Volume I INDEX Effects of shore pro
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Volume I INDEX Siting consideration
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Volume I INDEX Coastal A Zone) Term
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Volume I INDEX Channelized flow, 3-
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Volume I INDEX U Uplift (land) (see
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FEMA P-55 Catalog No. 08352-1
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