Coastal Construction Manual - National Ready Mixed Concrete ...

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4 SITING Figure 4‐9. Example of parcels well-suited to coastal development in Louisiana SOURCE: USGS Figure 4‐10. Example of parcels difficult to develop (mixed-use marina/ townhouse development) Development in both circumstances should satisfy planning and site development guidelines such as those listed in Table 4-2 (adapted from recommended subdivision review procedures for coastal development in California [California <strong>Coastal</strong> Commission 1994]). Development of raw land in coastal areas should consider the effects of all hazards known to exist and the effects of those hazards on future property owners. Similarly, such development should consider local, State, or Federal policies, regulations, or plans that will affect the abilities of future property owners to protect, transfer, or redevelop their properties (e.g., those dealing with erosion control, coastal setback lines, postdisaster redevelopment, landslides, and geologic hazards). 4-14 COASTAL CONSTRUCTION MANUAL
SITING 4 Table 4‐2. Planning and Site Development Guidelines for Raw Land Development of Raw Land in <strong>Coastal</strong> Areas: Summary of Site Planning and Subdivision Guidelines DO determine whether the parcel is suitable for subdivision or should remain a single parcel. DO ensure that the proposed land use is consistent with local, regional, and State planning and zoning requirements. DO ensure that all aspects of the proposed development consider and integrate topographic and natural features into the design and layout. DO avoid areas that require extensive grading to ensure stability. DO study the parcel thoroughly for all possible resource and hazard concerns. DO identify and avoid, or set back from, all sensitive resources and prominent land features. DO consider combining subdivision elements, such as access, utilities, and drainage. DO account for all types of erosion (e.g., long-term erosion, storm-induced erosion, erosion due to inlets) and governing erosion control policies when laying out lots and infrastructure near a shoreline. DO consider existing public access to shoreline and resource areas. DO incorporate setbacks from identified high-hazard areas. DO use a multi-hazard approach to planning and design. DO involve a team of experts with local knowledge, and a variety of technical expertise and backgrounds. DON’T rely on engineering solutions to correct poor planning decisions. DON’T assume that omissions in planning requirements can be corrected during site development. DON’T rely on relocation or restoration efforts to replace resources impacted by poor planning decisions DON’T overlook the effects of infrastructure location on the hazard vulnerability of building sites and lots. DON’T overlook the effects to surface and groundwater hydrology from modifications to the parcel. DON’T plan development on beaches or dunes, on ridge lines or on top of prominent topographical features, on steep slopes, or in or adjacent to streams. DON’T forget to consider future site and hazard conditions on the parcel. DON’T assume that engineering and architectural practices can mitigate all hazards. 4.5.1 Road Placement near Shoreline Based on studies and observations of previous coastal development patterns and resulting damage, there are several subdivision and lot layout practices that should be avoided. The first of these is placing a road close to the shoreline in an area of small lots. In the case of an eroding shoreline, placing a road close to the shoreline and creating small lots between the road and the shoreline results in buildings, the roadway itself, and utilities being extremely vulnerable to erosion and storm damage, and can lead to future conflicts over shore protection and buildings occupying public beaches. Figure 4-11 is a view along a washed-out, shore-parallel road in Garcon Point, FL, after Hurricane Ivan in 2004. Homes WARNING Proper lot layout and siting of building along an eroding shoreline are critical. Failure to provide deep lots and to place roads and infrastructure well away from the shoreline ensures future conflicts over building reconstruction and shore protection. COASTAL CONSTRUCTION MANUAL 4-15
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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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Page 131 and 132: IDENTIFYING HAZARDS 3 Jarrell, J.D.
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Page 137 and 138: SITING 4 The geographic region or
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Page 153 and 154: SITING 4 Figure 4‐18. Coastal lot
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5 INVESTIGATING REGULATORY REQUIREM
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FUNDAMENTALS OF RISK ANALYSIS AND R
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ACRONYMS Volume I CFR CRS CZM CZMA
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ACRONYMS Volume I NAVD NBC NEHRP NF
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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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