FEMA P55 Coastal Construction Manual, Fourth Edition - Mad Cad

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Volume II DESIGNING THE BUILDING 9 COASTAL CONSTRUCTION MANUAL Figure 9-6. Example load path for case study building 9-5
9 DESIGNING THE BUILDING Volume II Figure 9-7. Connection of the roof sheathing to the roof framing (Link #1) is significantly greater than that provided by a smooth shank nail. Additional strength can be added by using ring shank nails, also called deformed shank nails. The grooves and ridges along the shank act as wedges, giving the nail more withdrawal strength than a typical smooth shank nail. Fastener attachment requirements for roof sheathing to roof framing are available in building codes and design standards and are presented in terms of nailing schedules dependent on nail diameter and length, framing spacing, specific gravity of framing lumber, and wind speed. Common assumptions for calculating nailing schedules to resist wind uplift are provided in Example 9.1. Minimum roof sheathing attachment prescribed in building codes and reference prescriptive standards is 6 inches o.c. at panel edges and 12 inches o.c. in the field of the panel. EXAMPLE 9.1. ROOF SHEATHING NAIL SPACING FOR WIND UPLIFT Given: Find: • Refer to Figure 9-7 • Wind speed = 150 mph (700-year wind speed, 3-sec gust), Exposure Category D • Roof sheathing = 7/16-in. oriented strand board (OSB) • Roof framing specific gravity, G = 0.42 • 8d common nail has withdrawal capacity of 66 lb/nail per the NDS 1. Nail spacing for the perimeter edge zone for rafter spacing of 16 in. o.c. 2. Nail spacing for the perimeter edge zone for rafter spacing of 24 in. o.c. 9-6 COASTAL CONSTRUCTION MANUAL
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Coastal Construction Manual Princip
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All illustrations in this document
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PREFACE Volume II Chapter 8 - Site-
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1 CHAPTER TITLE Contents COASTAL CO
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Volume II CONTENTS Chapter 9. Desig
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Volume II CONTENTS Chapter 11. Desi
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Volume II CONTENTS 12.5 Water and W
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Volume II CONTENTS 15.4.1 Evaluatin
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Volume II CONTENTS Figure 9-10. Roo
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Volume II CONTENTS Figure 11-3. Hou
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Volume II CONTENTS Figure 11-47. Da
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Volume II CONTENTS Chapter 15 Figur
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Volume II CONTENTS Table 10-9. Adva
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Volume II CONTENTS Example 8.4. Flo
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1 CHAPTER TITLE COASTAL CONSTRUCTIO
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Volume II PRE-DESIGN CONSIDERATIONS
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8 DETERMINING SITE-SPECIFIC LOADS V
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12 INSTALLING MECHANICAL EQUIPMENT
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13 CONSTRUCTING THE BUILDING Volume
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14 MAINTAINING THE BUILDING Volume
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Volume II RETROFITTING BUILDINGS FO
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1 CHAPTER TITLE Acronyms COASTAL CO
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Volume II ACRONYMS H HMA Hazard Mit
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Volume II ACRONYMS T TMS The Masonr
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GLOSSARY Volume II Basement - Under
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GLOSSARY Volume II Conditions Great
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GLOSSARY Volume II F Federal Emerge
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GLOSSARY Volume II G Gabion - Rock-
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GLOSSARY Volume II Location - The l
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GLOSSARY Volume II O Open foundatio
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GLOSSARY Volume II Risk tolerance -
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GLOSSARY Volume II safe living cond
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GLOSSARY Volume II Z Zone A - Under
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INDEX Volume II Building envelope,
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INDEX Volume II stillwater flood de
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INDEX Volume II Floodborne debris d
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INDEX Volume II I IBHS (see Insuran
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INDEX Volume II date of constructio
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INDEX Volume II Seawall, 7-7, 7-17,
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INDEX Volume II velocity pressure,
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FEMA P55 Coastal Construction Manual, Fourth Edition - Mad Cad

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