NFPA 5000 Building Construction and Safety Code

NFPA 5000?-2018 Edition Building Construction and Safety Code? TIA Log No.: 1395 Reference: Various sections in Chapters 3, 32, 35, 36, 38, 39, 41, and 44 Comment Closing Date: October 11, 2018 Submitter: John Harrington, FM Global 5000

1. Revise 3.3.117 to read as follows: 3.3.117 Components and Cladding. Elements of the building envelope or elements of building appurtenances and rooftop structures and equipment that do not qualify as part of the main wind-force resisting system [ASCE/SEI 7:26.2] (BLD-SCM)

2. Revise 3.3.121.2 to read as follows: 3.3.121.2 Reinforced Concrete. Concrete reinforced with no less reinforcement than the minimum amount required by ACI 318, prestressed or nonprestressed, and designed on the assumption that the two materials act together in resisting forces. [ASCE/SEI 7:11.2] (BLDSCM)

3. Revise 3.3.156 to read as follows: 3.3.156 Design Earthquake. The earthquake effects that are two-thirds of the risk-targeted corresponding maximum considered earthquake effects. [ASCE/SEI 7:11.2] (BLD-SCM)

4. Revise 3.3.217.2 to read as follows: 3.3.217.2 Load Factor. A factor that accounts for deviations of the actual load from the nominal load, for uncertainties in the analysis that transforms the load into a load effect, and for the probability that more than one extreme load will occur simultaneously. [ASCE/SEI 7:1.2.1] (BLD-SCM)

5. Revise 3.3.373 to read as follows: 3.3.373 Limit State. A condition beyond which a structure or member becomes unfit for service and is judged either to be no longer useful for its intended function (serviceability limited state) or to be unsafe (strength limit state). [ASCE/SEI 7:1.2.1] (BLD-SCM)

6. Revise 3.3.386 and 3.3.386.1 to read as follows: 3.3.386 Loads. Forces or other actions that result from the weight of all building materials, occupants and their possessions, environmental effects, differential movement, and restrained dimensional changes. Permanent loads are those loads in which variations over time are rare or of small magnitude. All other loads are variable loads. (See also 3.3.386.5, Nominal Loads.) [ASCE/SEI 7:1.2.1] (BLD-SCM) 3.3.386.1 Dead Loads. Dead loads consist of the weight of all materials of construction incorporated into the building including, but not limited to, walls, floors, roofs, ceilings, stairways, built-in partitions, finishes, cladding, and other similarly incorporated architectural and structural items and fixed service equipment, including the weight of cranes and material handling systems. [ASCE/SEI 7:3.1.1] (BLD-SCM)

7. Revise 3.3.386.4 to read as follows:

3.3.386.4 Live Loads. Live loads are those A loads produced by the use and occupancy of the building or other structure and dothat does not include construction or environmental loads, such as wind load, snow load, rain load, earthquake load, flood load, or dead load. [ASCE/SEI 7:4.1] (BLD-SCM) 3.3.386.4.1 Roof Live Load: A Liveloads on a roof are those produced (1) during maintenance by workers, equipment, and materials; and (2) during the life of the structure by movable objects, such as planters or other similar small decorative appurtenances, that are not occupancy related. An occupancy-related live load on a roof such as rooftop assembly areas, rooftop decks, and vegetative or landscaped roofs with occupiable areas, is considered to be a live load rather than a roof live loadand by people. [ASCE/SEI 7:4.1] (BLD-SCM)

8. Revise 3.3.411 to read as follows: 3.3.411 Maximum Considered Earthquake (MCE) Ground Motion. The most severe earthquake effects considered by this Code as defined in Chapter 11 of ASCE/SEI 7, Section 11.4. [ASCE/SEI 7:11.2] (BLD-SCM)

9. Revise 3.3.457 to read as follows: 3.3.457 Openings. Apertures or holes in the building envelope that allow air to flow through the building envelope and whichthat are designed as "open" during design winds as defined by ASCE/SEI 7. [ASCE/SEI 7:26.2] (BLD-SCM)

10. Revise 3.3.567 to read as follows: 3.3.567 Seismic Design Category. A classification assigned to a structure based on its OccupancyRisk Category and the severity of the design earthquake ground motion at the site as defined in Section 11.4 of ASCE/SEI 7. [ASCE/SEI 7:11.2] (BLD-SCM)

11. Revise 3.3.585 to read as follows: 3.3.585 Site Class. A classification assigned to a site based on the types of soils present and their engineering properties as defined in Chapter 20 of ASCE/SEI 7, Section 20. [ASCE/SEI 7:11.2] (BLD-SCM)

12. Revise 3.3.627.1 to read as follows: 3.3.627.1 Design Strength. The product of the nominal strength and a resistance factor ,O. [ASCE/SEI 7:1.2.1] (BLD-SCM)

13. Revise 3.3.677.1 to read as follows: 3.3.677.1 Bearing Wall. Any wall meeting either of the following classifications: (1) any metal or wood stud wall that supports more than 100 lb/linear ft (14001459 N/linear m) of vertical load in addition to its own weight or (2) any concrete or masonry wall that supports more than 200 lb/linear ft (29002919 N/linear m) of vertical load in addition to its own weight. [ASCE/SEI 7:11.2] (BLD-SCM)

14. Revise 3.3.677.11 to read as follows: 3.3.677.11 Nonstructural Wall. All walls other than a bearing walls or shear walls. [ASCE/SEI 7:11.2] (BLD-SCM)

15. Revise 3.3.677.14 to read as follows:

3.3.677.14 Shear Wall. A wall, bearing or nonbearing, designed to resist lateral seismic forces acting in the plane of the wall (sometimes referred to as a vertical diaphragm). [ASCE/SEI 7:11.2] (BLD-SCM)

16. Revise 32.15 to read as follows: 32.15 Rooftop Heliports. Rooftop Heliports shall be designed according to NFPA 418, and the design loads of heliports shall be in accordance with 35.14.36.10.

17. Revise 35.1.2.2 to read as follows: 35.1.2.2 Basic Requirements. The basic requirements of strength, serviceability, self-straining forces, and analysis shall be in accordance with Section 1.3.1 through 1.3.6 excluding Section 1.3.1.3 of ASCE/SEI 7, Minimum Design Loads and Associated Criteria for Buildings and Other Structures.

18. Revise 35.1.2.4 to read as follows: 35.1.2.4 General Structural Integrity. The requirements for general structural integrity shall be in accordance with Sections 1.4.1 through 1.4.54 of ASCE/SEI 7, Minimum Design Loads and Associated Criteria for Buildings and Other Structures.

19. Revise 35.1.2.8.1.2 to read as follows: 35.1.2.8.1.2 Drift limits applicable to earthquake loading shall be in accordance with Section 12.12 of ASCE/SEI 7, Minimum Design Loads and Associated Criteria for Buildings and Other Structures.

20. Revise 35.2 to read as follows: 35.2 Special Definitions. A list of special terms used in this chapter, which are extracted from ASCE/SEI 7, Minimum Design Loads and Associated Criteria for Buildings and Other Structures, and are reprinted with the permission of ASCE, follows. (See flood-related definitions in Section 39.2).

21. Revise 35.2.6 to read as follows: 35.2.6 Components and Cladding. Elements of the building envelope or elements of the building appurtenances and rooftop structures and equipment that do not qualify as part of the main wind-force resisting system. [ASCE/SEI 7:26.2]

22. Revise 35.2.7.1 and 35.2.7.2 to read as follows: 35.2.7.1 Plain Concrete. Concrete that either is either unreinforced or contains less reinforcement than the minimum amount specified in ACI 318 for reinforced concrete. [ASCE/SEI 7:11.2] 35.2.7.2 Reinforced Concrete. Concrete reinforced with no less reinforcement than the minimum amount required by ACI 318, prestressed or nonprestressed, and designed on the assumption that the two materials act together in resisting forces. [ASCE/SEI 7:11.2]

23. Revise 35.2.8 to read as follows: 35.2.8 Design Earthquake. The earthquake effects that are two-thirds of the corresponding risk-targeted maximum considered earthquake (MCER) effects. [ASCE/SEI 7:11.2]

24. Revise 35.2.12.1 and 35.2.12.2 to read as follows: 35.2.12.1 Importance Factor (I). A factor that accounts for the degree of risk to human life, health, and welfare associated with damage to property or loss of use ofor functionality. [ASCE/SEI 7:1.2.1] 35.2.12.2 Load Factor. A factor that accounts for deviations of the actual load from the nominal load, for uncertainties in the analysis that transforms the load into a load effect, and for the probability that more than one extreme load will occur simultaneously. [ASCE/SEI 7:1.2.1]

25. Revise 35.2.14, 35.2.15 and 35.2.15.1 to read as follows: 35.2.14 Limit State. A condition beyond which a structure or member becomes unfit for service and is judged either to be no longer useful for its intended function (serviceability limit state) or to be unsafe (strength limited state). [ASCE/SEI 7:1.2.1] 35.2.15 Loads. Forces or other actions that result from the weight of all building materials, occupants and their possessions, environmental effects, differential movement, and restrained dimensional changes. Permanent loads are those loads in which variations over time are rare or of small magnitude. All other loads are variable loads. (See also 3.3.384.5, Nominal Loads.) [ASCE/SEI 7:1.2.1] 35.2.15.1 Dead Loads. Dead loads consist of the weight of all materials of construction incorporated into the building including but not limited to walls, floors, roofs, ceilings, stairways, built-in partitions, finishes, cladding and other similarly incorporated architectural and structural items, and fixed service equipment including the weight of cranes and material handling systems. [ASCE/SEI 7:3.1.1]

26. Revise 35.2.16 to read as follows: 35.2.16 Maximum Considered Earthquake Ground Motion. The most severe earthquake effects considered by this code as defined in Chapter 11 of ASCE/SEI 7, Section 11.4. [ASCE/SEI 7: 11.2].

27. Revise 35.2.18 to read as follows: 35.2.18 Openings. Apertures or holes in the building envelope that allow air to flow through the building envelope and which that are designed as "open" during design winds as defined by ASCE/SEI 7. [ASCE/SEI 7:26.2]

28. Revise 35.2.20 to read as follows: 35.2.20 Seismic Design Category. A classification assigned to a structure based on its OccupancyRisk Category and the severity of the design earthquake ground motion at the site as defined in Section 11.4 of ASCE/SEI 7, Section 11.4. [ASCE/SEI 7:11.2]

29. Revise 35.2.22 to read as follows: 35.2.22 Site Class. A classification assigned to a site based on the types of soils present and their engineering properties as defined in Chapter 20 of ASCE/SEI 7, Section 20. [ASCE/SEI 7:11.2]

30. Revise 35.2.26.1 to read as follows: 35.2.26.1 Bearing Wall. Any wall meeting either of the following classifications:

(1) Any metal or wood stud wall that supports more than 100 lb/linear ft (14001459 N/linear m) of vertical load in addition to its own weight or (2) Any concrete or masonry wall that supports more than 200 lb/linear ft (29002919 N/linear m) of vertical load in addition to its own weight [ASCE/SEI 7:11.2]

31. Revise 35.2.26.6 and 35.2.26.7 to read as follows: 35.2.26.6 Nonstructural Wall. All walls other than a bearing walls or shear walls. [ASCE/SEI 7:11.2] 35.2.26.7 Shear Wall. A wall, bearing or nonbearing, designed to resist lateral seismic forces acting in the plane of the wall (sometimes referred to as a vertical diaphragm). [ASCE/SEI 7:11.2]

32. Delete the extract information following Table 35.3.1 to read as follows: [ASCE/SEI 7: Table 1-1]

33. Revise 35.3.1.1 to read as follows: 35.3.1.1* Minimum design loads for structures shall incorporate the applicable importance factors given in ASCE/SEI 7, Minimum Design Loads and Associated Criteria for Buildings and Other Structures, Table 1.5-2. (See A.35.3.1.1.)

34. Revise 35.3.2 and 35.3.3to read as follows: 35.3.2 Multiple Risk Categories. Where buildings or other structures are divided into portions with independent structural systems, the classification for each portion shall be permitted to be determined independently in accordance with ASCE/SEI 7, Minimum Design Loads and Associated Criteria for Buildings and Other Structures, Section 1.5.2. 35.3.3 Multiple Use. Where a structure is occupied forby two or more occupancies not included in the same occupancy category, the structure shall be assigned the classification of the highest occupancy category corresponding to the various occupancies. Where structures have two or more portions that are structurally separated in accordance with Section 12.12.3 of ASCE/SEI 7, Minimum Design Loads and Associated Criteria for Buildings and Other Structures, each portion shall be separately classified. Where a structurally separated portion of a structure provides required access to, provides required egress from, or shares life safety components with another portion having a higher occupancy category, both portions shall be assigned the higher occupancy category.

35. Revise 35.4.2.4 and 35.4.2.5 to read as follows: 35.4.2.4 Wind Load. The following information related to wind loads shall be shown (see Section 35.9), regardless of whether wind loads govern the lateral design of the building: (1) Basic wind speed (mph) (2) Wind importance factor (I) and risk category (3) Wind exposure -- with wind exposure and applicable wind direction indicated if more than one wind exposure is utilized (4) Building classification as enclosed, partially enclosed, or open, and protection of openings where required (5) Topographic factor (Kzt)

(6) Wind design pressure (p) to be used for the design of exterior components and cladding not specifically designed by the responsible registered design professional -- with p for each exposure indicated if more than one exposure is utilized

(1) Risk category and MRI (2) Basic wind speed (V, mph) (3) Ground surface roughness (B, C, or D) (4) Height (5) Velocity pressure coefficient (Kz) (6) Building classification as enclosed, partially enclosed, or open, and protection of

openings where required (7) Internal pressure coefficient (GCpi. (8) Effective wind area (EWA) (9) External pressure coefficient (GCp) (10) Topographic factor (Kzt) (11) Elevation factor (Ke) if taken as other than 1.0 (12) Directionality factor (Kd) (13) Wind design pressure (p) 35.4.2.5 Earthquake Design Data. The following information related to seismic design shall be shown (see Section 35.10), regardless of whether seismic loads govern the lateral design of the building: (1) Mapped maximum considered earthquake spectral response acceleration at short

periods (Ss) and at a period of 1 second (S1) (2) Site class (3) Design earthquake spectral response acceleration at short periods (SDS) and at a period

of 1 second (SD1) (4) Risk category (5) Seismic importance factor (I) (6) Seismic design category (7) Basic Designated seismic force?resisting system (8) Analysis procedure

36. Revise 35.5 to read as follows: 35.5 Dead Loads. Dead loads shall be determined in accordance with Section 3.1 of ASCE/SEI 7, Minimum Design Loads and Associated Criteria for Buildings and Other Strucutres.

37. Delete 35.5.1 and 35.5.2 in their entirety.

38. Revise 35.6.1.2 to read as follows: 35.6.1.2* Floors and other structural elements of buildings in the locations specified in Table 4-14.3.1 of ASCE/SEI 7 shall be designed to support the uniformly distributed live loads prescribed in 35.6.2 or the minimum concentrated loads prescribed in 35.6.3, whichever produces the greater stresses.

39. Revise section 35.6.2 to read as follows: 35.6.2 Uniformly Distributed Live Loads.

35.6.2.1 The minimum, uniformly distributed live loads used in the design of buildings and other structures in pounds per square foot shall be as set forth in Table 4-14.3.1 shall be in accordance with Section 4.3 of ASCE/SEI 7, Minimum Design Loads and Associated Criteria for Buildings and Other Structures. 35.6.2.2 The live loads in Table 4-14.3.1 of ASCE/SEI 7 shall be minimum loads to be used for the occupancies listed. 35.6.2.32 Where the building will be subjected to greater live loads than those specified in Table 4-14.3.1Section 4.3 of ASCE/SEI 7, Minimum Design Loads and Associated Criteria for Buildings and Other Structures, such loads shall be utilized for design including, but not limited to, the requirements in 35.6.2.3.1 through 35.6.2.3.3 35.6.1.14.1 and 35.6.1.14.2. 35.6.2.3.1 ... 35.6.2.3.1.1 ... 35.6.2.3.1.2 ... 35.6.2.3.2 ... 35.6.2.3.3 ... 35.6.2.3.3.1 ... 35.6.2.3.3.2 ...

40. Revise section 35.6.3 to read as follows: 35.6.3 Concentrated Loads. 35.6.3.1 Provision shall be made in designing floors and other structural elements of buildings for a concentrated load as set forth in Table 4-14.3.1 in accordance with Section 4.4 of ASCE/SEI 7, Minimum Design Loads and Associated Criteria for Buildings and Other Structures. 35.6.3.2 ... 35.6.3.32 Stage floors shall meet the following requirements: (1) Stage floors shall be designed to support not less than a 2000 lb (8.9 kN) concentrated load on a 1 ft2 (0.09 m2) area at any point. (2) The concentrated load specified in 35.6.3.32(1) shall not be required to be applied simultaneously with the required uniform load. 35.6.3.3 The concentrated load on stair treads shall be in accordance with Section 4.16 of ASCE/SEI 7, Minimum Design Loads and Associated Criteria for Buildings and Other Structures.

41. Revise section 35.6.4 to read as follows: 35.6.4 Garage Loads, Sidewalks, Vehicular Driveways, and Yards Subject to Trucking 35.6.4.1 Passenger Vehicle Garages. Floors in garages or portions of a building used for the storage of motor vehicles shall be designed in accordance with Section 4.10.1 of ASCE/SEI 7, Minimum Design Loads and Associated Criteria for Buildings and Other Structures. 35.6.4.2 Live Loads for Areas Subject to Truck, Bus, and Emergency Vehicle Traffic. 35.6.4.2.1 Minimum live loads for areas subject to truck, bus, and emergency vehicle traffic shall be as specified in Table 35.6.4.2.1 but shall be not less than 50 psf (2.4 kN/m2). Table 35.6.4.2.1 Uniform and Concentrated Loads

Loading Class

Uniform Load [lb/linear ft of lane (kN/linear m of lane)]

Concentrated Load [lb (kN)]

For Moment For Shear

Design

Design

H20-44 and HS20-44

640 (9.3)

18,000 (80) 26,000 (115)

H15-44 and HS15-44

480 (7.0)

13,500 (60) 19,500 (87)

An H loading class designates a two-axle truck with a semitrailer. An HS loading class designates a tractor truck with a semitrailer. The numbers following the letter classification indicate the gross weight, in tons, of the standard truck and the year the loadings were instituted. See 35.6.4.2.2 for the loading of multiple spans. 35.6.4.2.2 The concentrated load and uniform load shall be uniformly distributed over a 10 ft (3050 mm) width on a line normal to the centerline of the lane placed within a lane 12 ft (3660 mm) in width. 35.6.4.2.2.1 The loads shall be placed within their individual lanes so as to produce the maximum stress in each structural member. 35.6.4.2.2.2 Single spans shall be designed for the uniform load in Table 35.6.4.1, and one simultaneous concentrated load shall be positioned to produce the maximum effect. 35.6.4.2.2.3 Multiple spans shall be designed for the uniform load in Table 35.6.4.1 on the spans, and two simultaneous concentrated loads in two spans shall be positioned to produce the maximum negative moment effect. 35.6.4.2.2.4 Multiple-span design loads, for other effects, shall be the same as for single spans. 35.6.4.3 Live Loads on Sidewalks, Vehicular Driveways, and Yards Subject to Trucking. Live loads on sidewalks, vehicular driveways, and yards subject to trucking shall be in accordance with Section 4.15 of ASCE/SEI 7, Minimum Design Loads and Associated Criteria for Buildings and Other Structures.

42. Revise section 35.6.5 to read as follows: 35.6.5 Handrails, Guardrails, Grab Bars, Vehicle Barrier Systems, and Fixed Ladders. 35.6.5.1 All required handrails, guardrails, grab bars, vehicle barrier systems, and fixed ladders shall be designed and constructed to the structural loading conditions in Section 4.5 of ASCE/SEI 7, Minimum Design Loads and Associated Criteria for Buildings and Other Structures. 35.6.5.2 ...

43. Revise section 35.6.6 to read as follows: 35.6.6* Impact Loads. Provisions for the live loads specified in 35.6.2 shall be made in the structural design for occupancies and loads that involve vibration and impact forces, as

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