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ICC IEBC Commentary 2021 1stptg

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International Existing Building Code and Commentary

Published By Publication Date Number of Pages
ICC 2021
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A practical tool that helps you to master the code you deal with every day! This comprehensive publication provides a convenient reference for regulations in the 2021 International Existing Building CodeÂŽ (IEBCÂŽ).

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PDF Pages PDF Title
1 2021 IEBCÂŽ CODE AND COMMENTARY
2 2021 IEBCÂŽ CODE AND COMMENTARY TITLE PAGE
3 COPYRIGHT
4 PREFACE
6 TABLE OF CONTENTS
8 CHAPTER 1: SCOPE AND ADMINSTRATION
GENERAL COMMENTS
PURPOSE
9 PART 1—SCOPE AND APPLICATION
SECTION 101 SCOPE AND GENERAL REQUIREMENTS
10 SECTION 102 APPLICABILITY
11 PART 2—ADMINISTRATION AND ENFORCEMENT
SECTION 103 CODE COMPLIANCE AGENCY
12 SECTION 104 DUTIES AND POWERS OF CODE OFFICIAL
17 SECTION 105 PERMITS
20 SECTION 106 CONSTRUCTION DOCUMENTS
24 SECTION 107 TEMPORARY STRUCTURES AND USES
SECTION 108 FEES
25 SECTION 109 INSPECTIONS
27 SECTION 110 CERTIFICATE OF OCCUPANCY
29 SECTION 111 SERVICE UTILITIES
SECTION 112 MEANS OF APPEALS
30 SECTION 113 VIOLATIONS
SECTION 114 STOP WORK ORDER
31 SECTION 115 UNSAFE STRUCTURES AND EQUIPMENT
32 SECTION 116 EMERGENCY MEASURES
SECTION 117 DEMOLITION
33 BIBLIOGRAPHY
34 CHAPTER 2: DEFINITIONS
GENERAL COMMENTS
PURPOSE
SECTION 201 GENERAL
SECTION 202 GENERAL DEFINITIONS
40 CHAPTER 3: PROVISIONS FOR ALL COMPLIANCE METHODS
GENERAL COMMENTS
41 PURPOSE
SECTION 301 ADMINISTRATION
42 SECTION 302 GENERAL PROVISIONS
44 SECTION 303 STORM SHELTERS
45 SECTION 304 STRUCTURAL DESIGN LOADS AND EVALUATION AND DESIGN PROCEDURES
46 COMMENTARY FIGURE 304.3(1) RISK CATEGORIES AND IMPORTANCE FACTORS
47 COMMENTARY FIGURE 304.3(2) DETERMINATION OF SEISMIC DESIGN CATEGORY USING THE INTERNATIONAL BUILDING CODE
COMMENTARY FIGURE 304.3(3) FEMA 356 REHABILITATION OBJECTIVES
48 COMMENTARY FIGURE 304.3(4) BASIC SAFETY OBJECTIVES (BSO)
49 COMMENTARY FIGURE 304.3(5) FEMA 356 REHABILITATION PROCESS
50 [BS] TABLE 304.3.1 PERFORMANCE OBJECTIVES FOR USE IN ASCE 41 FOR COMPLIANCE WITH FULL SEISMIC FORCES
51 [BS] TABLE 304.3.2 PERFORMANCE OBJECTIVES FOR USE IN ASCE 41 FOR COMPLIANCE WITH REDUCED SEISMIC FORCES
SECTION 305 IN-SITU LOAD TESTS
SECTION 306 ACCESSIBILITY FOR EXISTING BUILDINGS
52 COMMENTARY FIGURE 306.2 NEW AND EXISTING TURNING SPACE CRITERIA FROM 2017 ICC A117.1 SECTION 304.3.1
61 SECTION 307 SMOKE ALARMS
SECTION 308 CARBON MONOXIDE DETECTION
62 SECTION 309 ADDITIONS AND REPLACEMENTS OF EXTERIOR WALL COVERINGS AND EXTERIOR WALL ENVELOPES
BIBLIOGRAPHY
64 CHAPTER 4: REPAIRS
GENERAL COMMENTS
PURPOSE
SECTION 401 GENERAL
65 SECTION 402 BUILDING ELEMENTS AND MATERIALS
SECTION 403 FIRE PROTECTION
SECTION 404 MEANS OF EGRESS
SECTION 405 STRUCTURAL
68 SECTION 406 ELECTRICAL
69 SECTION 407 MECHANICAL
SECTION 408 PLUMBING
70 BIBLIOGRAPHY
72 CHAPTER 5: PRESCRIPTIVE COMPLIANCE METHOD
GENERAL COMMENTS
PURPOSE
SECTION 501 GENERAL
73 SECTION 502 ADDITIONS
74 COMMENTARY FIGURE 502.1 EXISTING BUILDING WITH ADDITION
76 SECTION 503 ALTERATIONS
COMMENTARY FIGURE 503.1 PROPOSED CORRIDOR EXTENSION
81 SECTION 504 FIRE ESCAPES
82 SECTION 505 WINDOWS AND EMERGENCY ESCAPE OPENINGS
84 COMMENTARY FIGURE 505.3.1 PROPOSED CORRIDOR EXTENSION
85 SECTION 506 CHANGE OF OCCUPANCY
87 SECTION 507 HISTORIC BUILDINGS
90 CHAPTER 6: CLASSIFICATION OF WORK
GENERAL COMMENTS
PURPOSE
SECTION 601 GENERAL
SECTION 602 ALTERATION—LEVEL 1
SECTION 603 ALTERATION—LEVEL 2
91 SECTION 604 ALTERATION—LEVEL 3
SECTION 605 CHANGE OF OCCUPANCY
SECTION 606 ADDITIONS
92 SECTION 607 HISTORIC BUILDINGS
94 CHAPTER 7: ALTERATIONS—LEVEL 1
GENERAL COMMENTS
PURPOSE
SECTION 701 GENERAL
95 COMMENTARY FIGURE 701.2 CONFORMANCE OF AN EXISTING WATER SUPPLY SYSTEM
SECTION 702 BUILDING ELEMENTS AND MATERIALS
96 COMMENTARY FIGURE 702.4 HEIGHT OF OPENING FROM FLOOR
97 SECTION 703 FIRE PROTECTION
98 SECTION 704 MEANS OF EGRESS
SECTION 705 REROOFING
100 SECTION 706 STRUCTURAL
101 COMMENTARY FIGURE 706.3.1 MASONRY PARAPET BRACE
SECTION 707 ELECTRICAL
SECTION 708 ENERGY CONSERVATION
102 BIBLIOGRAPHY
104 CHAPTER 8: ALTERATIONS—LEVEL 2
GENERAL COMMENTS
PURPOSE
SECTION 801 GENERAL
105 COMMENTARY FIGURE 801.1 RECONFIGURED SPACE
106 SECTION 802 BUILDING ELEMENTS AND MATERIALS
109 COMMENTARY FIGURE 802.2.2 SUPPLEMENTAL SHAFT AND FLOOR OPENING ENCLOSURE REQUIREMENTS
110 SECTION 803 FIRE PROTECTION
112 COMMENTARY FIGURE 803.2.2.1 EXAMPLE 803.2.2.1
115 SECTION 804 MEANS OF EGRESS
116 TABLE 804.4.1.1(1) STORIES WITH ONE EXIT OR ACCESS TO ONE EXIT FOR R-2 OCCUPANCIES
117 TABLE 804.4.1.1(2) STORIES WITH ONE EXIT OR ACCESS TO ONE EXIT FOR OTHER OCCUPANCIES
119 COMMENTARY FIGURE 804.4.3 MAIN ENTRANCE—GROUP A
120 COMMENTARY FIGURE 804.5.1.1 OCCUPANT LOAD AND TRAVEL DISTANCE
121 COMMENTARY FIGURE 804.5.2 DOOR SWING
122 COMMENTARY FIGURE 804.5.2.1 SUPPLEMENTAL REQUIREMENTS FOR DOOR SWING
126 COMMENTARY FIGURE 804.10.2 HANDRAILS
127 SECTION 805 STRUCTURAL
128 SECTION 806 ELECTRICAL
129 COMMENTARY FIGURE 806.4 RESIDENTIAL OCCUPANCY ELECTRICAL
130 SECTION 807 MECHANICAL
SECTION 808 PLUMBING
SECTION 809 ENERGY CONSERVATION
132 CHAPTER 9: ALTERATIONS—LEVEL 3
GENERAL COMMENTS
PURPOSE
SECTION 901 GENERAL
133 SECTION 902 SPECIAL USE AND OCCUPANCY
134 SECTION 903 BUILDING ELEMENTS AND MATERIALS
135 SECTION 904 FIRE PROTECTION
136 COMMENTARY FIGURE 904.1.1 HIGH-RISE BUILDINGS
137 COMMENTARY FIGURE 904.1.2 RUBBISH AND LINEN CHUTES
139 SECTION 905 MEANS OF EGRESS
SECTION 906 STRUCTURAL
141 SECTION 907 ENERGY CONSERVATION
142 CHAPTER 10: CHANGE OF OCCUPANCY
GENERAL COMMENTS
PURPOSE
SECTION 1001 GENERAL
143 SECTION 1002 SPECIAL USE AND OCCUPANCY
144 SECTION 1003 BUILDING ELEMENTS AND MATERIALS
SECTION 1004 FIRE PROTECTION
SECTION 1005 MEANS OF EGRESS
SECTION 1006 STRUCTURAL
146 SECTION 1007 ELECTRICAL
147 SECTION 1008 MECHANICAL
SECTION 1009 PLUMBING
148 SECTION 1010 OTHER REQUIREMENTS
SECTION 1011 CHANGE OF OCCUPANCY CLASSIFICATION
149 TABLE 1011.5 MEANS OF EGRESS HAZARD CATEGORIES
151 TABLE 1011.6 HEIGHTS AND AREAS HAZARD CATEGORIES
152 TABLE 1011.7 EXPOSURE OF EXTERIOR WALLS HAZARD CATEGORIES
153 BIBLIOGRAPHY
154 CHAPTER 11: ADDITIONS
GENERAL COMMENTS
PURPOSE
SECTION 1101 GENERAL
155 SECTION 1102 HEIGHTS AND AREAS
COMMENTARY FIGURE 1102.2 EXISTING BUILDING WITH ADDITION
156 SECTION 1103 STRUCTURAL
157 SECTION 1104 ENERGY CONSERVATION
158 CHAPTER 12: HISTORIC BUILDINGS
GENERAL COMMENTS
PURPOSE
SECTION 1201 GENERAL
159 SECTION 1202 REPAIRS
SECTION 1203 FIRE SAFETY
161 SECTION 1204 CHANGE OF OCCUPANCY
163 SECTION 1205 STRUCTURAL
SECTION 1206 RELOCATED BUILDINGS
BIBLIOGRAPHY
164 CHAPTER 13: PERFORMANCE COMPLIANCE METHODS
GENERAL COMMENTS
PURPOSE
SECTION 1301 GENERAL
169 EQUATION 13-1
EQUATION 13-2
170 EQUATION 13-3
EQUATION 13-4
EQUATION 13-5
171 COMMENTARY FIGURE 1301.6.2.2(1) ALLOWABLE AREA—SINGLE-OCCUPANCY BUILDING
172 COMMENTARY FIGURE 1301.6.2.2(2) ALLOWABLE AREA—MIXED-OCCUPANCY BUILDING
173 TABLE 1301.6.3 COMPARTMENTATION VALUES
174 TABLE 1301.6.4 SEPARATION VALUES
175 COMMENTARY FIGURE 1301.6.4.1(1) DWELLING UNIT SEPARATION
COMMENTARY FIGURE 1301.6.4.1(2) TENANT SEPARATION
176 TABLE 1301.6.5 CORRIDOR WALL VALUES
COMMENTARY FIGURE 1301.6.5.1(1) CORRIDOR WALL VALUES—CATEGORY A
177 COMMENTARY FIGURE 1301.6.5.1(2) CORRIDOR WALL VALUES—CATEGORY B
178 TABLE 1301.6.6(1) VERTICAL OPENING PROTECTION VALUE
TABLE 1301.6.6(2) CONSTRUCTION-TYPE FACTOR
EQUATION 13-6
179 TABLE 1301.6.8 AUTOMATIC FIRE DETECTION VALUES
180 TABLE 1301.6.9 FIRE ALARM SYSTEM VALUES
181 TABLE 1301.6.10 SMOKE CONTROL VALUES
183 TABLE 1301.6.11 MEANS OF EGRESS VALUES
184 COMMENTARY FIGURE 1301.6.11(1) MEANS-OF-EGRESS VALUES—CATEGORY B
COMMENTARY FIGURE 1301.6.11(2) MEANS-OF-EGRESS VALUES—CATEGORY A
185 TABLE 1301.6.12 DEAD-END VALUES
186 EQUATION 13-7
COMMENTARY FIGURE 1301.6.12.1(1) TYPICAL DEAD-END CORRIDOR
COMMENTARY FIGURE 1301.6.12.1(2) DEAD-END VALUES—CATEGORY B
187 COMMENTARY FIGURE 1301.6.12.1(3) DEAD-END VALUES—CATEGORY A
COMMENTARY FIGURE 1301.6.13(1) EXIT ACCESS TRAVEL DISTANCE VALUE—OCCUPANCY GROUP S-1
188 TABLE 1301.6.14 ELEVATOR CONTROL VALUES
COMMENTARY FIGURE 1301.6.13(2) EXIT ACCESS TRAVEL DISTANCE VALUE—OCCUPANCY GROUP B
COMMENTARY FIGURE 1301.6.13(3) EXIT ACCESS TRAVEL DISTANCE VALUE—OCCUPANCY GROUP R
189 TABLE 1301.6.15 MEANS OF EGRESS EMERGENCY LIGHTING VALUES
190 TABLE 1301.6.16 MIXED OCCUPANCY VALUESa
192 TABLE 1301.6.17 SPRINKLER SYSTEM VALUES
193 TABLE 1301.6.18 STANDPIPE SYSTEM VALUES
194 TABLE 1301.6.19 INCIDENTAL USE AREA VALUES
195 TABLE 1301.6.20 SMOKE COMPARTMENTATION VALUES
TABLE 1301.6.21.1 CARE RECIPIENT ABILITY VALUES
196 TABLE 1301.6.21.2 CARE RECIPIENT CONCENTRATION VALUES
TABLE 1301.6.21.3 ATTENDANT-TO-CARE RECIPIENTS RATIO VALUES
197 TABLE 1301.7 SUMMARY SHEET—BUILDING CODE
198 TABLE 1301.8 MANDATORY SAFETY SCORESa
TABLE 1301.9 EVALUATION FORMULASa
199 COMMENTARY FIGURE 1301.9 EXAMPLE OF EVALUATION FORMULAS
200 BIBLIOGRAPHY
202 CHAPTER 14: RELOCATED OR MOVED BUILDINGS
GENERAL COMMENTS
PURPOSE
SECTION 1401 GENERAL
203 SECTION 1402 REQUIREMENTS
206 CHAPTER 15: CONSTRUCTION SAFEGUARDS
GENERAL COMMENTS
PURPOSE
SECTION 1501 GENERAL
207 [BS] TABLE 1501.6 PROTECTION OF PEDESTRIANS
209 SECTION 1502 PROTECTION OF ADJOINING PROPERTY
210 SECTION 1503 TEMPORARY USE OF STREETS, ALLEYS AND PUBLIC PROPERTY
SECTION 1504 FIRE EXTINGUISHERS
SECTION 1505 MEANS OF EGRESS
211 SECTION 1506 STANDPIPES
SECTION 1507 AUTOMATIC SPRINKLER SYSTEM
212 SECTION 1508 ACCESSIBILITY
SECTION 1509 WATER SUPPLY FOR FIRE PROTECTION
214 CHAPTER16: REFERENCED STANDARDS
GENERAL COMMENTS
PURPOSE
215 COMMENTARY FIGURE 16 REFERENCED STANDARDS
216 ASCE/SEI
ASHRAE
ASME
ASTM
217 ICC
NFPA
218 UL
220 APPENDIX A: GUIDELINES FOR THE SEISMIC RETROFIT OF EXISTING BUILDINGS
CHAPTER A1: SEISMIC STRENGTHENING PROVISIONS FOR UNREINFORCED MASONRY – BEARING WALL BUILDINGS
GENERAL COMMENTS
221 SECTION A101 PURPOSE
SECTION A102 SCOPE
[BS] TABLE A102.1 ELEMENTS REGULATED BY THIS CHAPTER
SECTION A103 DEFINITIONS
223 SECTION A104 SYMBOLS AND NOTATIONS
224 SECTION A105 GENERAL REQUIREMENTS
225 SECTION A106 MATERIALS REQUIREMENTS
226 EQUATION A1-1
227 EQUATION A1-2
228 SECTION A107 QUALITY CONTROL
229 SECTION A108 DESIGN STRENGTHS
EQUATION A1-3
EQUATION A1-4
230 [BS] TABLE A108.1(1) STRENGTH VALUES FOR EXISTING MATERIALS
231 [BS] TABLE A108.1(2) STRENGTH VALUES OF NEW MATERIALS USED IN CONJUNCTION WITH EXISTING CONSTRUCTION
SECTION A109 ANALYSIS AND DESIGN PROCEDURE
232 SECTION A110 GENERAL PROCEDURE
EQUATION A1-5
233 [BS] TABLE A110.2 ALLOWABLE VALUE OF HEIGHT-TO-THICKNESS RATIO OF UNREINFORCED MASONRY WALLS
SECTION A111 SPECIAL PROCEDURE
234 EQUATION A1-6
235 [BS] FIGURE A111.4.1 ACCEPTABLE DIAPHRAGM SPAN
236 EQUATION A1-7
EQUATION A1-8
EQUATION A1-9
EQUATION A1-10
237 EQUATION A1-11
EQUATION A1-12
[BS] TABLE A111.5 HORIZONTAL FORCE FACTOR, Cp
EQUATION A1-13
EQUATION A1-14
238 EQUATION A1-15
239 EQUATION A1-16
EQUATION A1-17
SECTION A112 ANALYSIS AND DESIGN
EQUATION A1-18
EQUATION A1-20
240 EQUATION A1-21
EQUATOIN A1-22
[BS] FIGURE A112.2.2 ANALYSIS OF URM WALL IN-PLANE SHEAR FORCES
241 EQUATION A1-23
SECTION A113 DETAILED BUILDING SYSTEM DESIGN REQUIREMENTS
243 [BS] TABLE A113.6 MAXIMUM ALLOWABLE HEIGHT-TO-THICKNESS RATIO FOR PARAPETS
244 SECTION A114 WALLS OF UNBURNED CLAY, ADOBE OR STONE MASONRY
[BS] TABLE A114.1 MAXIMUM HEIGHT-TO-THICKNESS RATIO FOR ADOBE OR STONE WALLS
BIBLIOGRAPHY
246 CHAPTER A2: EARTHQUAKE HAZARD REDUCTION IN EXISTING REINFORCED CONCRETE AND REINFORCED MASONRY WALL BUILDINGS WITH FLEXIBLE DIAPHRAGMS
GENERAL COMMENTS
247 SECTION A201 PURPOSE
SECTION A202 SCOPE
248 SECTION A203 DEFINITIONS
SECTION A204 SYMBOLS AND NOTATIONS
SECTION A205 GENERAL REQUIREMENTS
249 SECTION A206 ANALYSIS AND DESIGN
255 SECTION A207 MATERIALS OF CONSTRUCTION
BIBLIOGRAPHY
258 CHAPTER A3: PRESCRIPTIVE PROVISIONS FOR SEISMIC STRENGTHENING OF CRIPPLE WALLS AND SILL PLATE ANCHORAGE OF LIGHT WOOD-FRAME RESIDENTIAL BUILDINGS
GENERAL COMMENTS
PURPOSE
259 SECTION A301 GENERAL
261 SECTION A302 DEFINITIONS
262 SECTION A303 STRUCTURAL WEAKNESSES
264 SECTION A304 STRENGTHENING REQUIREMENTS
265 [BS] FIGURE A304.1.3 TYPICAL FLOOR TO CRIPPLE WALL CONNECTION (FLOOR JOISTS NOT PARALLEL TO FOUNDATIONS)
267 [BS] FIGURE A304.1.4(1) TYPICAL FLOOR TO CRIPPLE WALL CONNECTION (FLOOR JOISTS PARALLEL TO FOUNDATIONS)
268 [BS] FIGURE A304.1.4(2) TYPICAL FLOOR TO MUDSILL CONNECTIONS
269 [BS] FIGURE A304.1.4(3) ALTERNATIVE FLOOR FRAMING TO CRIPPLE WALL CONNECTION
270 [BS] FIGURE A304.2.3(1) NEW REINFORCED CONCRETE FOUNDATION SYSTEM
271 [BS] FIGURE A304.2.3(2) NEW MASONRY CONCRETE FOUNDATION
272 [BS] TABLE A304.2.3(1) NEW REINFORCED CONCRETE FOUNDATION SYSTEM
[BS] TABLE A304.2.3(2) NEW MASONRY CONCRETE FOUNDATION
273 [BS] TABLE A304.3.1 SILL PLATE ANCHORAGE AND CRIPPLE WALL BRACING
274 [BS] FIGURE A304.3.1(1) SILL PLATE BOLTING TO EXISTING FOUNDATION
275 [BS] FIGURE A304.3.1(2) ALTERNATIVE SILL PLATE ANCHORING IN EXISTING FOUNDATION—WITHOUT CRIPPLE WALLS AND FLOOR FRAMING NOT PARALLEL TO FOUNDATIONS
[BS] FIGURE A304.3.1(3) ALTERNATIVE SILL PLATE ANCHOR TO EXISTING FOUNDATION WITHOUT CRIPPLE WALL AND FLOOR FRAMING PARALLEL TO FOUNDATIONS
276 [BS] FIGURE A304.3.1(4) SILL PLATE ANCHORING TO EXISTING FOUNDATION—ALTERNATIVE CONNECTION FOR BATTERED FOOTING
[BS] TABLE A304.3.2 SILL PLATE ANCHORAGE FOR VARIOUS LENGTHS OF SILL PLATE
278 [BS] FIGURE A304.4.1(1) CRIPPLE WALL BRACING WITH NEW WOOD STRUCTURAL PANEL ON EXTERIOR FACE OF CRIPPLE STUDS
279 [BS] FIGURE A304.4.1(2) CRIPPLE WALL BRACING WITH WOOD STRUCTURAL PANEL ON INTERIOR FACE OF CRIPPLE STUDS
280 [BS] FIGURE A304.4.1(3) PARTIAL CRIPPLE STUD WALL ELEVATION
281 [BS] FIGURE A304.4.2 FLOOR PLAN-CRIPPLE WALL BRACING LAYOUT
283 BIBLIOGRAPHY
286 CHAPTER A4: EARTHQUAKE RISK REDUCTION IN WOOD-FRAME RESIDENTIAL BUILDINGS WITH SOFT, WEAK OR OPEN FRONT WALLS
GENERAL COMMENTS
PURPOSE
287 SECTION A401 GENERAL
288 SECTION A402 DEFINITIONS
289 COMMENTARY FIGURE A402 OPEN FRONT WALL LINE—EXCESSIVE CANTILEVER CALCULATION
SECTION A403 ANALYSIS AND DESIGN
295 SECTION A404 PRESCRIPTIVE MEASURES FOR WEAK STORY
COMMENTARY FIGURE A404.1 SECTION A404 DEFINITIONS
297 SECTION A405 MATERIALS OF CONSTRUCTION
298 SECTION A406 CONSTRUCTION DOCUMENTS
299 SECTION A407 QUALITY CONTROL
BIBLIOGRAPHY
302 CHAPTER A5: REFERENCED STANDARDS
SECTION A501 REFERENCED STANDARDS
TABLE A501.1 REFERENCED STANDARDS
TABLE A501.1—continued REFERENCED STANDARDS
304 APPENDIX B: SUPPLEMENTARY ACCESSIBILITY REQUIREMENTS FOR EXISTING BUILDINGS AND FACILITIES
GENERAL COMMENTS
PURPOSE
SECTION B101 QUALIFIED HISTORICAL BUILDINGS AND FACILITIES
305 SECTION B102 FIXED TRANSPORTATION FACILITIES AND STATIONS
SECTION B103 DWELLING UNITS AND SLEEPING UNITS
306 SECTION B104 REFERENCED STANDARDS
[BE] TABLE B104.1 REFERENCED STANDARDS
308 APPENDIX C: GUIDELINES FOR THE WIND RETROFIT OF EXISTING BUILDINGS
GENERAL COMMENTS
PURPOSE
CHAPTER C1: GABLE END RETROFIT FOR HIGH-WIND AREAS
309 SECTION C101 GENERAL
SECTION C102 DEFINITIONS
SECTION C103 MATERIALS OF CONSTRUCTION
310 [BS] TABLE C103.3 MATERIAL SPECIFICATIONS FOR RETROFITSa
[BS] TABLE C103.5 NAIL AND SCREW REQUIREMENTS
311 [BS] FIGURE C103.5.3 FASTENER SPACINGS FOR LUMBER-TO-LUMBER CONNECTIONS OPERATING IN SHEAR PARALLEL TO GRAIN
SECTION C104 RETROFITTING GABLE END WALLS TO ENHANCE WIND RESISTANCE
[BS] FIGURE C104.1 BASIC GABLE END RETROFIT METHODOLOGY
313 [BS] TABLE C104.2 STUD LENGTH LIMITATIONS BASED ON EXPOSURE AND DESIGN WIND SPEED
[BS] FIGURE C104.2(1) TRUSS FRAMED GABLE END
314 [BS] FIGURE C104.2(2) CONVENTIONALLY FRAMED GABLE END L-BENT STRAP
[BS] FIGURE C104.2(3) TRUSS FRAMED GABLE END U-BENT STRAP
315 [BS] FIGURE C104.2(4) CONVENTIONALLY FRAMED GABLE END U-BENT STRAP
316 [BS] FIGURE C104.2.3 OMITTED HORIZONTAL BRACE
317 [BS] FIGURE C104.2.4(1) LADDER BRACING FOR OMITTED RETROFIT STUD (GABLE END FRAME)
318 [BS] FIGURE C104.2.4(2) LADDER BRACING FOR OMITTED RETROFIT STUD (CONVENTIONALLY FRAMED GABLE END)
319 [BS] FIGURE C104.2.5 ANCHOR BLOCK INSTALLATION
320 [BS] FIGURE C104.2.7 DETAIL OF RETROFIT TIE INSTALLATION
321 [BS] FIGURE C104.2.8(1) SPLICED HORIZONTAL BRACES
322 [BS] FIGURE C104.2.8(2) SPLICED HORIZONTAL BRACES
323 [BS] FIGURE C104.2.8(3) SPLICED HORIZONTAL BRACES
324 [BS] FIGURE C104.3 METHOD OF INSTALLING RETROFIT STUDS
325 [BS] FIGURE C104.3.4 NAIL PLATE FASTENING
326 [BS] FIGURE C104.3.8 RETROFIT STUD SPLICES
327 [BS] TABLE C104.4.1 ELEMENT SIZING AND SPACING FOR L-BENT RETROFIT METHOD
[BS] TABLE C104.4.2 ELEMENT SIZING AND SPACING FOR U-BENT RETROFIT METHOD
[BS] TABLE C104.5.1 SPACING OF GUSSET ANGLES
328 [BS] TABLE C104.5.2 SPACING OF LAG OR MASONRY SCREWS USED TO CONNECT SILL PLATE OF GABLE END WALL TO TOP OF THE WALL BELOW
330 CHAPTER C2: ROOF DECK FASTENING FOR HIGH-WIND AREAS
GENERAL COMMENTS
PURPOSE
331 SECTION C201 GENERAL
SECTION C202 ROOF DECK ATTACHMENT FOR WOOD ROOFS
[BS] TABLE C202.1.2 SUPPLEMENT FASTENERS AT PANEL EDGES AND INTERMEDIATE FRAMING
332 CHAPTER C3: REFERENCED STANDARDS
SECTION C301 REFERENCED STANDARDS
[BS] TABLE C301.1 REFERENCED STANDARDS
334 APPENDIX D: BOARD OF APPEALS
GENERAL COMMENTS
PURPOSE
SECTION D101 GENERAL
338 RESOURCE A GUIDELINES ON FIRE RATINGS OF ARCHAIC MATERIALS AND ASSEMBLIES
INTRODUCTION
PURPOSE
339 1 FIRE-RELATED PERFORMANCE OF ARCHAIC MATERIALS AND ASSEMBLIES
1.1 FIRE PERFORMANCE MEASURES
TUNNEL TEST RESULTS FOR EIGHT SPECIES OF LUMBER
340 1.2 COMBUSTIBLE CONSTRUCTION TYPES
2 BUILDING EVALUATION
2.1 PRELIMINARY EVALUATION
341 FIGURE 1 PRELIMINARY EVALUATION FIELD NOTES
342 FIGURE 2 PRELIMINARY EVALUATION WORKSHEET
343 2.2 FIRE RESISTANCE OF EXISTING BUILDING ELEMENTS
2.3 EFFECTS OF PENETRATIONS IN FIRE-RESISTANT ASSEMBLIES
3 FINAL EVALUATION AND DESIGN SOLUTION
344 3.1 THE EXPERIMENTAL APPROACH
3.2 THE THEORETICAL APPROACH
HARMATHY’S TEN RULES
346 ILLUSTRATION OF HARMATHY’S RULES
EXAMPLE APPLICATION OF HARMATHY’S RULES
348 3.3“ THICKNESS DESIGN” STRATEGY
3.4 EVALUATION OF DOORS
349 FIGURE 3 MODIFICATION DETAILS
350 4 SUMMARY
352 APPENDIX
INTRODUCTION
RESOURCE A TABLE OF CONTENTS
354 PURPOSE AND PROCEDURE
355 SECTION I – WALLS
FIGURE 1.1.1 MASONRY WALLS 0″ TO LESS THAN 4″ THICK
TABLE 1.1.1 MASONRY WALLS 0″ TO LESS THAN 4″ THICK
356 TABLE 1.1.1—continued MASONRY WALLS 0″ TO LESS THAN 4″ THICK
357 TABLE 1.1.1—continued MASONRY WALLS 0″ TO LESS THAN 4″ THICK
358 FIGURE 1.1.2 MASONRY WALLS 4″ TO LESS THAN 6″ THICK
TABLE 1.1.2 MASONRY WALLS 4″ TO LESS THAN 6″ THICK
359 TABLE 1.1.2—continued MASONRY WALLS 4″ TO LESS THAN 6″ THICK
360 TABLE 1.1.2—continued MASONRY WALLS 4″ TO LESS THAN 6″ THICK
361 TABLE 1.1.2—continued MASONRY WALLS 4″ TO LESS THAN 6″ THICK
362 TABLE 1.1.2—continued MASONRY WALLS 4″ TO LESS THAN 6″ THICK
363 TABLE 1.1.2—continued MASONRY WALLS 4″ TO LESS THAN 6″ THICK
364 TABLE 1.1.2—continued MASONRY WALLS 4″ TO LESS THAN 6″ THICK
365 FIGURE 1.1.3 MASONRY WALLS 6″ TO LESS THAN 8″ THICK
TABLE 1.1.3 MASONRY WALLS 6″ TO LESS THAN 8″ THICK
366 TABLE 1.1.3—continued MASONRY WALLS 6″ TO LESS THAN 8″ THICK
367 TABLE 1.1.3—continued MASONRY WALLS 6″ TO LESS THAN 8″ THICK
368 TABLE 1.1.3—continued MASONRY WALLS 6″ TO LESS THAN 8″ THICK
369 TABLE 1.1.3—continued MASONRY WALLS 6″ TO LESS THAN 8″ THICK
370 FIGURE 1.1.4 MASONRY WALLS 8″ TO LESS THAN 10″ THICK
TABLE 1.1.4 MASONRY WALLS 8″ TO LESS THAN 10″ THICK
371 TABLE 1.1.4—continued MASONRY WALLS 8″ TO LESS THAN 10″ THICK
372 TABLE 1.1.4—continued MASONRY WALLS 8″ TO LESS THAN 10″ THICK
373 TABLE 1.1.4—continued MASONRY WALLS 8″ TO LESS THAN 10″ THICK
374 TABLE 1.1.4—continued MASONRY WALLS 8″ TO LESS THAN 10″ THICK
375 TABLE 1.1.4—continued MASONRY WALLS 8″ TO LESS THAN 10″ THICK
376 TABLE 1.1.4—continued MASONRY WALLS 8″ TO LESS THAN 10″ THICK
377 TABLE 1.1.4—continued MASONRY WALLS 8″ TO LESS THAN 10″ THICK
378 FIGURE 1.1.5 MASONRY WALLS 10″ TO LESS THAN 12″ THICK
TABLE 1.1.5 MASONRY WALLS 10″ TO LESS THAN 12″ THICK
379 TABLE 1.1.5—continued MASONRY WALLS 10″ TO LESS THAN 12″ THICK
380 TABLE 1.1.5—continued MASONRY WALLS 10″ TO LESS THAN 12″ THICK
381 TABLE 1.1.5—continued MASONRY WALLS 10″ TO LESS THAN 12″ THICK
382 FIGURE 1.1.6 MASONRY WALLS 12″ TO LESS THAN 14″ THICK
TABLE 1.1.6 MASONRY WALLS 12″ TO LESS THAN 14″ THICK
383 TABLE 1.1.6—continued MASONRY WALLS 12″ TO LESS THAN 14″ THICK
384 TABLE 1.1.6—continued MASONRY WALLS 12″ TO LESS THAN 14″ THICK
385 TABLE 1.1.6—continued MASONRY WALLS 12″ TO LESS THAN 14″ THICK
386 TABLE 1.1.6—continued MASONRY WALLS 12″ TO LESS THAN 14″ THICK
387 TABLE 1.1.6—continued MASONRY WALLS 12″ TO LESS THAN 14″ THICK
388 FIGURE 1.1.7 MASONRY WALLS 14″ OR MORE THICK
TABLE 1.1.7 MASONRY WALLS 14″ OR MORE THICK
389 TABLE 1.1.7—continued MASONRY WALLS 14″ OR MORE THICK
390 TABLE 1.1.7—continued MASONRY WALLS 14″ OR MORE THICK
391 FIGURE 1.2.1 METAL FRAME WALLS 0″ TO LESS THAN 4″ THICK
TABLE 1.2.1 METAL FRAME WALLS 0″ TO LESS THAN 4″ THICK
392 TABLE 1.2.1—continued METAL FRAME WALLS 0″ TO LESS THAN 4″ THICK
393 TABLE 1.2.1—continued METAL FRAME WALLS 0″ TO LESS THAN 4″ THICK
394 TABLE 1.2.1—continued METAL FRAME WALLS 0″ TO LESS THAN 4″ THICK
395 FIGURE 1.2.2 METAL FRAME WALLS 4″ TO LESS THAN 6″ THICK
TABLE 1.2.2 METAL FRAME WALLS 4″ TO LESS THAN 6″ THICK
396 TABLE 1.2.2—continued METAL FRAME WALLS 4″ TO LESS THAN 6″ THICK
397 TABLE 1.2.3 METAL FRAME WALLS 6″ TO LESS THAN 8″ THICK
398 TABLE 1.2.4 METAL FRAME WALLS 8″ TO LESS THAN 10″ THICK
399 TABLE 1.3.1 WOOD FRAME WALLS 0″ TO LESS THAN 4″ THICK
400 FIGURE 1.3.2 WOOD FRAME WALLS 4″ TO LESS THAN 6″ THICK
TABLE 1.3.2 WOOD FRAME WALLS 4″ TO LESS THAN 6″ THICK
401 TABLE 1.3.2—continued WOOD FRAME WALLS 4″ TO LESS THAN 6″ THICK
402 TABLE 1.3.2—continued WOOD FRAME WALLS 4″ TO LESS THAN 6″ THICK
403 TABLE 1.3.2—continued WOOD FRAME WALLS 4″ TO LESS THAN 6″ THICK
404 TABLE 1.3.2—continued WOOD FRAME WALLS 4″ TO LESS THAN 6″ THICK
405 TABLE 1.3.2—continued WOOD FRAME WALLS 4″ TO LESS THAN 6″ THICK
406 TABLE 1.3.2—continued WOOD FRAME WALLS 4″ TO LESS THAN 6″ THICK
407 TABLE 1.3.2—continued WOOD FRAME WALLS 4″ TO LESS THAN 6″ THICK
408 TABLE 1.3.3 WOOD FRAME WALLS 6″ TO LESS THAN 8″ THICK
TABLE 1.4.1 MISCELLANEOUS MATERIALS WALLS 0″ TO LESS THAN 4″ THICK
409 TABLE 1.4.2 MISCELLANEOUS MATERIALS WALLS 4″ TO LESS THAN 6″ THICK
410 FIGURE 1.5.1 FINISH RATINGS—IN ORGANIC MATERIALS
TABLE 1.5.1 FINISH RATINGS—INORGANIC MATERIALS
411 TABLE 1.5.1—continued FINISH RATINGS—INORGANIC MATERIALS
TABLE 1.5.2 FINISH RATINGS—ORGANIC MATERIALS
412 SECTION II COLUMNS
TABLE 2.1.1 REINFORCED CONCRETE COLUMNS MINIMUM DIMENSION 0″ TO LESS THAN 6″
413 FIGURE 2.1.2 REINFORCED CONCRETE COLUMNS MINIMUM DIMENSION 10″ TO LESS THAN 12″
TABLE 2.1.2 REINFORCED CONCRETE COLUMNS MINIMUM DIMENSION 10″ TO LESS THAN 12″
414 TABLE 2.1.2—continued REINFORCED CONCRETE COLUMNS MINIMUM DIMENSION 10″ TO LESS THAN 12″
415 TABLE 2.1.2—continued REINFORCED CONCRETE COLUMNS MINIMUM DIMENSION 10″ TO LESS THAN 12″
416 TABLE 2.1.3 REINFORCED CONCRETE COLUMNS MINIMUM DIMENSION 12″ TO LESS THAN 14″
417 TABLE 2.1.4 REINFORCED CONCRETE COLUMNS MINIMUM DIMENSION 14″ TO LESS THAN 16″
418 FIGURE 2.1.5 REINFORCED CONCRETE COLUMNS MINIMUM DIMENSION 16″ TO LESS THAN 18″
TABLE 2.1.5 REINFORCED CONCRETE COLUMNS MINIMUM DIMENSION 16″ TO LESS THAN 18″
419 TABLE 2.1.5—continued REINFORCED CONCRETE COLUMNS MINIMUM DIMENSION 16″ TO LESS THAN 18″
420 TABLE 2.1.6 REINFORCED CONCRETE COLUMNS MINIMUM DIMENSION 18″ TO LESS THAN 20″
421 FIGURE 2.1.7 REINFORCED CONCRETE COLUMNS MINIMUM DIMENSION 20″ TO LESS THAN 22″
TABLE 2.1.7 REINFORCED CONCRETE COLUMNS MINIMUM DIMENSION 20″ TO LESS THAN 22″
422 TABLE 2.1.7—continued REINFORCED CONCRETE COLUMNS MINIMUM DIMENSION 20″ TO LESS THAN 22″
TABLE 2.1.8 HEXAGONAL REINFORCED CONCRETE COLUMNS MINIMUM DIMENSION 12″ TO LESS THAN 14″
423 TABLE 2.1.9 HEXAGONAL REINFORCED CONCRETE COLUMNS MINIMUM DIMENSION 14″ TO LESS THAN 16″
TABLE 2.1.10 HEXAGONAL REINFORCED CONCRETE COLUMNS DIAMETER—16″ TO LESS THAN 18″
TABLE 2.1.11 HEXAGONAL REINFORCED CONCRETE COLUMNS DIAMETER—20″ TO LESS THAN 22″
424 TABLE 2.2 ROUND CAST IRON COLUMNS
425 FIGURE 2.3 STEEL COLUMNS—GYPSUM ENCASEMENTS
TABLE 2.3 STEEL COLUMNS—GYPSUM ENCASEMENTS
426 TABLE 2.3—continued STEEL COLUMNS—GYPSUM ENCASEMENTS
TABLE 2.4 TIMBER COLUMNS MINIMUM DIMENSION
TABLE 2.5.1.1 STEEL COLUMNS—CONCRETE ENCASEMENTS MINIMUM DIMENSION LESS THAN 6
427 TABLE 2.5.1.2 STEEL COLUMNS—CONCRETE ENCASEMENTS 6″ TO LESS THAN 8″ THICK
428 FIGURE 2.5.1.3 STEEL COLUMNS—CONCRETE ENCASEMENTS MINIMUM DIMENSION 8″ TO LESS THAN 10″
TABLE 2.5.1.3 STEEL COLUMNS—CONCRETE ENCASEMENTS MINIMUM DIMENSION 8″ TO LESS THAN 10″
429 TABLE 2.5.1.3—continued STEEL COLUMNS—CONCRETE ENCASEMENTS MINIMUM DIMENSION 8″ TO LESS THAN 10″
430 FIGURE 2.5.1.4 STEEL COLUMNS—CONCRETE ENCASEMENTSMINIMUM DIMENSION 10″ TO LESS THAN 12″
TABLE 2.5.1.4 STEEL COLUMNS—CONCRETE ENCASEMENTS MINIMUM DIMENSION 10″ TO LESS THAN 12″
431 TABLE 2.5.1.4—continued STEEL COLUMNS—CONCRETE ENCASEMENTS MINIMUM DIMENSION 10″ TO LESS THAN 12″
432 TABLE 2.5.1.4—continued STEEL COLUMNS—CONCRETE ENCASEMENTS MINIMUM DIMENSION 10″ TO LESS THAN 12″
433 TABLE 2.5.1.4—continued STEEL COLUMNS—CONCRETE ENCASEMENTS MINIMUM DIMENSION 10″ TO LESS THAN 12″
434 FIGURE 2.5.1.5 STEEL COLUMNS—CONCRETE ENCASEMENTS MINIMUM DIMENSION 12″ TO LESS THAN 14″
TABLE 2.5.1.5 STEEL COLUMNS—CONCRETE ENCASEMENTS MINIMUM DIMENSION 12″ TO LESS THAN 14″
435 TABLE 2.5.1.5—continued STEEL COLUMNS—CONCRETE ENCASEMENTS MINIMUM DIMENSION 12″ TO LESS THAN 14″
436 FIGURE 2.5.1.6 STEEL COLUMNS—CONCRETE ENCASEMENTS MINIMUM DIMENSION 14″ TO LESS THAN 16″
TABLE 2.5.1.6 STEEL COLUMNS—CONCRETE ENCASEMENTS MINIMUM DIMENSION 14″ TO LESS THAN 16″
437 TABLE 2.5.1.6—continued STEEL COLUMNS—CONCRETE ENCASEMENTS MINIMUM DIMENSION 14″ TO LESS THAN 16″
438 TABLE 2.5.1.7 STEEL COLUMNS—CONCRETE ENCASEMENTS MINIMUM DIMENSION 16″ TO LESS THAN 18″
TABLE 2.5.2.1 STEEL COLUMNS—BRICK AND BLOCK ENCASEMENTS MINIMUM DIMENSION 10″ TO LESS THAN 12″
439 TABLE 2.5.2.2 STEEL COLUMNS—BRICK AND BLOCK ENCASEMENTS MINIMUM DIMENSION 12″ TO LESS THAN 14″
TABLE 2.5.2.3 STEEL COLUMNS—BRICK AND BLOCK ENCASEMENTS MINIMUM DIMENSION 14″ TO LESS THAN 16″
440 TABLE 2.5.3.1 STEEL COLUMNS—PLASTER ENCASEMENTS MINIMUM DIMENSION 6″ TO LESS THAN 8″
TABLE 2.5.3.2 STEEL COLUMNS—PLASTER ENCASEMENTS MINIMUM DIMENSION 8″ TO LESS THAN 10″
TABLE 2.5.4.1 STEEL COLUMNS—MISCELLANEOUS ENCASEMENTS MINIMUM DIMENSION 6″ TO LESS THAN 8″
441 TABLE 2.5.4.2 STEEL COLUMNS—MISCELLANEOUS ENCASEMENTS MINIMUM DIMENSION 8″ TO LESS THAN 10″
TABLE 2.5.4.3 STEEL COLUMNS—MISCELLANEOUS ENCASEMENTS MINIMUM DIMENSION 10″ TO LESS THAN 12″
TABLE 2.5.4.4 STEEL COLUMNS—MISCELLANEOUS ENCASEMENTS MINIMUM DIMENSION 12″ TO LESS THAN 14″
442 SECTION III FLOOR/CEILING ASSEMBLIES
FIGURE 3.1 FLOOR/CEILING ASSEMBLIES—REINFORCED CONCRETE
TABLE 3.1 FLOOR/CEILING ASSEMBLIES—REINFORCED CONCRETE
443 TABLE 3.1—continued FLOOR/CEILING ASSEMBLIES—REINFORCED CONCRETE
444 TABLE 3.1—continued FLOOR/CEILING ASSEMBLIES—REINFORCED CONCRETE
445 TABLE 3.1—continued FLOOR/CEILING ASSEMBLIES—REINFORCED CONCRETE
446 TABLE 3.1—continued FLOOR/CEILING ASSEMBLIES—REINFORCED CONCRETE
447 TABLE 3.1—continued FLOOR/CEILING ASSEMBLIES—REINFORCED CONCRETE
448 FIGURE 3.2 FLOOR/CEILING ASSEMBLIES—STEEL STRUCTURAL ELEMENTS
TABLE 3.2 FLOOR/CEILING ASSEMBLIES—STEEL STRUCTURAL ELEMENTS
449 TABLE 3.2—continued FLOOR/CEILING ASSEMBLIES—STEEL STRUCTURAL ELEMENTS
450 TABLE 3.2—continued FLOOR/CEILING ASSEMBLIES—STEEL STRUCTURAL ELEMENTS
451 TABLE 3.2—continued FLOOR/CEILING ASSEMBLIES—STEEL STRUCTURAL ELEMENTS
452 TABLE 3.2—continued FLOOR/CEILING ASSEMBLIES—STEEL STRUCTURAL ELEMENTS
453 TABLE 3.2—continued FLOOR/CEILING ASSEMBLIES—STEEL STRUCTURAL ELEMENTS
454 FIGURE 3.3 FLOOR/CEILING ASSEMBLIES—WOOD JOIST
TABLE 3.3 FLOOR/CEILING ASSEMBLIES—WOOD JOIST
455 TABLE 3.3—continued FLOOR/CEILING ASSEMBLIES—WOOD JOIST
456 TABLE 3.3—continued FLOOR/CEILING ASSEMBLIES—WOOD JOIST
457 TABLE 3.3—continued FLOOR/CEILING ASSEMBLIES—WOOD JOIST
458 FIGURE 3.4 FLOOR/CEILING ASSEMBLIES—HOLLOW CLAY TILE WITH REINFORCED CONCRETE
TABLE 3.4 FLOOR/CEILING ASSEMBLIES—HOLLOW CLAY TILE WITH REINFORCED CONCRETE
459 TABLE 3.4—continued FLOOR/CEILING ASSEMBLIES—HOLLOW CLAY TILE WITH REINFORCED CONCRETE
460 TABLE 3.4—continued FLOOR/CEILING ASSEMBLIES—HOLLOW CLAY TILE WITH REINFORCED CONCRETE
461 SECTION IV BEAMS
TABLE 4.1.1 REINFORCED CONCRETE BEAMS DEPTH 10″ TO LESS THAN 12″
462 TABLE 4.1.1—continued REINFORCED CONCRETE BEAMS DEPTH 10″ TO LESS THAN 12″
463 TABLE 4.1.1—continued REINFORCED CONCRETE BEAMS DEPTH 10″ TO LESS THAN 12″
464 TABLE 4.1.2 REINFORCED CONCRETE BEAMS DEPTH 12″ TO LESS THAN 14″
465 TABLE 4.1.2—continued REINFORCED CONCRETE BEAMS DEPTH 12″ TO LESS THAN 14″
466 TABLE 4.1.3 REINFORCED CONCRETE BEAMS DEPTH 14″ TO LESS THAN 16″
467 TABLE 4.2.1 REINFORCED CONCRETE BEAMS—UNPROTECTED DEPTH 10″ TO LESS THAN 12″
TABLE 4.2.2 STEEL BEAMS—CONCRETE PROTECTION DEPTH 10″ TO LESS THAN 12″
468 SECTION V DOORS
FIGURE 5.1 RESISTANCE OF DOORS TO FIRE EXPOSURE
TABLE 5.1 RESISTANCE OF DOORS TO FIRE EXPOSURE
469 TABLE 5.1—continued RESISTANCE OF DOORS TO FIRE EXPOSURE
470 TABLE 5.1—continued RESISTANCE OF DOORS TO FIRE EXPOSURE
471 BIBLIOGRAPHY
478 INDEX
484 ADDITIONAL CODE RESOURCES FROM ICC
485 ICC DIGITAL CODES PREMIUM
486 ICC EVALUATION SERVICE
487 S.K. GHOSH ASSOCIATES LLC
ICC IEBC Commentary 2021 1stptg
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