PG_IBC 2000 Guide

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AN ILLUSTRATED GUIDE TO THE AN ILLUSTRATED GUIDE TO THE NONNON--STRUCTURALSTRUCTURAL PROVISIONS OF

The 2000 IBCThe 2000 IBCPROVISIONS OF

With Prince George’s County Amendments

The Prince George’s County Department of Environmental Resources

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The 2000 IBCChapter 1 – AdministrationThe 2000 IBCChapter 1 – Administration


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Note: Blue boxes in this presentation indicate

explanation of IBC codes –not local amendments.

IBC General Overview

The IBC has 35 code Chapters + 6 appendix ChaptersThe 2000 IBC contains both Structural and Non-Structural RequirementsCompanion documents to the IBC are:

IMC – International Mechanical Code (2000 replaces 1996)IRC – International Residential Code (replaces CABO)IFC – International Fire Code–not adopted (use NFPA 1 instead)IECC - International Energy Conservation CodeICC Electrical Code–not adopted (use NEC/NFPA 70 instead)International Plumbing Code–not adopted (use WSSC)

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Organization of Non-Structural Chapters

Miscellaneous (int. finishes, glazing, plastic, plumbing, elevators, special construction)

8, 24, 25, 26, 29, 30, 31

Roof Assemblies and Roof Top Structures15

Exterior Walls14

Interior Environment12

Accessibility11

Means of Egress10

“Fire Protection Requirements”7, 9

Use & Occupancy, General Bldg. Limitations, Areas, Heights, Types of Construction

3, 4, 5, 6

Administration1

SubjectChapter

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Organization of Structural Chapters

Wood23

Steel22

Masonry21

Aluminum20

Concrete19

Soils and Foundations18

Structural Tests and Inspections17

Structural Design (documents, loads, analysis methods)16

SubjectChapter

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A Comparison of the “Old” and “New” Codes for Prince George’s County

New Code2000 IBC = 755 pagesLocal Amendments (Div. 1) = 56 pages (a 42% reduction in local amendments)Some amendments grant relief from IBC provisions (e.g.-Townhouse roofs, stair requirements, etc.)The new complete re-write is more readable

Old Code.1996 BOCA = 357 pages.Local Amendments (Div. 1) = 98pages.The Old Code had a “fractured” structure due to many revisions since 1960’s with no complete code “overhaul” previously.

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Chapter 1 - Administration

SCOPE – The IBC applies to all buildings, except detached 1 & 2 family dwellings and townhouses not more than 3 stories high having separate means of egress. (101.2)

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Amendments – Adopted Codes

The Codes Adopted Are:IBC, 2000IMC, 2000IECC (Energy Code), 2000IRC, 2000

Note - City of Laurel Exemption Continues

Note: Wherever you see this yellow box, it denotes a local amendment in this presentation.

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Amendment – Code Officials

Building, Mechanical, & Fire Code Official.Building Code Official – is designated by the Director of DER, charged with enforcement of non-fire related portions of the code.Fire Code Official – is designated by Director of DER, with Fire Chief’s concurrence, charged with enforcement of all fire related portions of the code.

Note- see also 103.1 amended.

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Amendment – Grading and Storm Water Management

Additional Regulations (101.2.2):Divisions 3 and 4 or this Subtitle control grading, drainage, surface structures, erosion control.

NOTE: This is a repeat of an existing amendment - 4-106

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Amendments – Specific Code Adoptions by Reference

Code References101.4.1 - Subtitle 9 governs Electrical systems (National Electrical Code)101.4.2 – WSSC Plumbing and Gas Fitting Code applies to GAS installations104.4.4 – WSSC Plumbing and Gas Fitting Code applies to PLUMBING systems101.4.6.1 – NFPA 1 and Subtitle 11 apply (National Fire Prevention Code)

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Amendment -Work Exempt From Permits (105.2)

1&2 Family properties of less than 150 square feet, not designed for habitation –1 per property.Paving less than 500 s.f., except driveways.Retaining walls not over 2’ high.Fences not over 4’ high.Satellite dishes not over 2’ diameter.Siding, roofing, storm doors/windows, insulation.

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Amendment – Repairs (105.2.2)

Application or notice to the Building Official not required for:

Ordinary repairs.Lamp replacements.Connection of approved portable electrical equipment (e.g. - to a wired receptacle).

NOTE: This is a repeat of an existing amendment.

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Amendment – Repairs (105.2.2)

Application or notice to the Building Official is also not required for:

Replacement of siding, roofing, guttering, sidewalks, driveways, patios, awnings, canopies, equipment, cabinets, slabs, handrails, window screens, storm doors/ windows, recirculating hoods, and windows.


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Amendment – Repairs to ResidentialStructures (105.2.2.1)

All hotels, motels, multi-family, and multiple single-family dwellings which because of lack of maintenance or structural damage due to a fire, explosion or natural causes, undergo repairs exceeding 50% of assessed value of the building – shall have an approved automatic sprinkler system installed throughout.


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Amendment - Repairs to Residential Structures (105.2.2.1)

Computation Method (new).Cost of repairs excludes:

Carpeting replacement.Electrical panel capacity upgrades.Painting and wallpapering.Re-grading and landscaping.Lighting fixture / appliance replacements.Bath cabinetry and fixture replacements.Required ADA improvements.

Note – Each street address is considered separately. All repairs in a 365 day period are cumulative for application of this sub-section.

NOTE: This is a clarification of an existing amendment. It clarifies the methods of computing the cost of repairs to damaged property.

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Amendment – Application Exception (105.3.1.1)

The Director of DER may refuse to accept an application for a permit… who is or was in default on a previously issued permit or listed on an expired permit which is not currently in process of being extended by County administrative action.

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Amendment – Time limit of Application (105.3.2)

An application for a permit for any proposed work shall be deemed to have been abandoned 24 months after date of filing unless such application has been diligently pursued in good faith or a permit has been issued.Extensions of time may be authorized by the Director. The Director may request any documentation or certification deemed necessary and assess an extension fee as appropriate.

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Amendment – Expiration (105.5)

Must start work within 180 days of permit.Must not suspend or abandon work for 180 days or more after commencement.Code Official may grant 1 or more extensions for up to 180 days each, with justifiable cause.Permits for property in pending Sectional Map Amendment (Zoning Code) which is rezoned to less intense zone, expire upon approval of SMA un less a building foundation is completed.

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Amendment – Suspension or Revocation (105.6)

Permit issued in error.Permit issued in violation of any ordinance or regulation or Code.Failure to locate utility lines on site if excavation is 12” or more.Permits may be re-issued, as follows:

1. COUNTY EXECUTIVE – EXECUTIVE ORDER BASED ON SEVERE ECONOMIC FACTORS2. DIRECTOR MAY AUTHORIZE THE BUILDING OFFICIAL TO RE-ISSUE A PERMIT FOR UP TO 1 YEAR BASED ON EXECUTIVE ORDER BY COUNTY EXECUTIVE.

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Amendment – Acknowledgement of Final Grade (106.2.2)

Builders and developers shall place on record with each utility company, a written acknowledgement that final grade has been achieved to within 6 inches.Utility lines shall not be installed until such acknowledgement has been received by the utilities. (CB-82).


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Amendment – Fire Protection Engineering Design Evaluation (106.3.4)

All design of Use Groups:I-2 (hospitals, nursing homes),I-3 (correctional facilities, etc.).H,A (>= 1,000 persons),M (covered malls), and,Projects >= $5M estimated construction cost

shall be evaluated by a Fire Protection Engineer, registered in MD.Smoke Control, Detection, & Suppression Systems, if complex.

NOTE: This is a repeat of an existing amendment. The project valuation has been increased from $4M to $5M before these requirements apply.

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Signed and Sealed Report must document code compliance of:

EgressFire Protection SystemsConstruction TypeFire Ratings of Structural ElementsHeight and Area complianceFire HydrantsEmergency Vehicle AccessInterior Finishes

NOTE: This is a repeat of an existing amendment. It has been expanded for clarity.

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The FPE Design Evaluation must include a statement by the FPE and Engineer/Architect of Record attesting that the plans are in compliance with applicable fire related codes and standards.If in the course of performing evaluating, the FPE finds there are fire code deficiencies in the the design, they shall be remedied prior to submittal of the report and the permit application.

NOTE: This is modified wording of an existing amendment.

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Amendments – Emergency Measures (116.1 – 116.7)

Lien to be collected by Dir. Of Finance.Creation of Tax Lien116.7

Deemed unsafe => may not be operated.Unsafe Equipment116.6

Costs paid from Treasury. OOL to pursue tax lien or cost recovery.

Cost of Emergency Repairs116.5

Building Official may employ labor and materials to perform work.

Emergency Repairs116.4

Building Official may order streets or buildings closed.

Closing Streets116.3

Imminent danger => cause work doneTemporary Safeguards116.2

Building Official may make safe by completion or demolition.

Abatement of uncompleted Structures

116.1

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The 2000 IBCChapter 2 – Definitions

The 2000 IBCChapter 2 – Definitions


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IBC Chapter 2 - Definitions

Most definitions are similar to BOCA.The terms “Use” and “Occupancy” are not defined in IBC.

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Amendments – Added Definitions

One or more rooms of any use in a Condo Project

Condominium Unit

5 or more apartments, rooms, offices, offered for sale

Condominium Project

Ownership of single units in a multiunit structure

Condominium

Chesapeake Bay, and wetlands, plus 1,000 ft. landward

Chesapeake Bay Critical Area

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Demonstrates how a project meets CBCA criteria.

Conservation Plan

Describes how Conservation Plan is prepared.

Conservation Manual

Commits applicant to Conservation Plan execution.

Conservation Agreement

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Footing supporting superimposed and special loads.

Building Foundation

Ownership/tenancy of a building, structure or land

Occupancy

Pressure vessel of 200,000 BTU/HR and 200F and 120gal., or more

Hot Water Supply Heater

Director of DER, or designee.Director

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The 2000 IBCChapter 3 – Use and Occupancy Classification

The 2000 IBCChapter 3 – Use and Occupancy Classification


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IBC Chapter 3 – Use and Occupancy Classification

Most classifications are similar to BOCA.Notice that there are some differences in Use Groups A, I, and R, in particular.

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Comparison of IBC and BOCA Use Classifications – Assembly Use

Outdoor activities, fairs, open stadium, etc.

Exclusively for Worship or religious services

Recreation, amusement, Restaurants (no worship)

Dance Halls, night clubs

Theatres, Arts & Mot. Pic.

BOCA IBCUse

Outdoor activities, stadiums, amusement parks, etc.

A-5

Indoor sports events w/seatingA-4

Worship, recreation, amusementA-3

restaurants, night clubs, barsA-2

TheatresA-1

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Comparison of IBC and BOCA Use Classifications – Institutional (1 of 2)

I-2

I-1

Use IBCBOCA

Same as BOCA(5 or less=R-3). Note: Child care, 24 hr to more than 5 under 2-1/2 yrs = I-2.

Medical, surgical, custodial care, etc., 24 hr basis, 6 or more persons, incapable of s/p. (5 or less = R)

More than 16 persons, 24 hr. basis, age, mental disability, in supervised environment. Can respond to emergency w/out staff. (5 or fewer = residential, 6-16= R-4).

6 or more, age or mental disability, physically capable of response w/out assistance (5 or less = R)

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Comparison of IBC and BOCA Use Classifications – Institutional (2 of 2)

I-4

I-3

Use IBCBOCA

Custodial care <24 hrs., any age, by non parents /guardians (5 or less = R-3, worship not incl.).

No I-4 Use in BOCA

Similar to BOCA (conditions 1 through 5).

6 or more under restraint or security. Incapable of s/p due to security. (conditions I-V)

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Comparison of IBC and BOCA Use Classifications – Residential Use

Detached 1&2 family dwellings

Multiple 1&2 Family dwellings (townhouses), Child Care 5 or less of any age.

Multi-Family>2 units, boarding non-transient

Transient, Hotels, Motels, Boarding, <30 days

BOCA IBCUse

Residential Care/Assisted Living, 5-16 persons, except staff. R-4 meet reqts of R-3 except hgt/area=503.

R-4

1&2 dwelling units, or adult and child care for 5 or less for <24 hrs.

R-3

Apartments, Boarding Houses (n/t), Convents, Dorms, Frats/Sororities, Monasteries

R-2

SameR-1

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Amendment- Use Group U-PU (302.1, 313.0), Public Utility

This use group applies to installations by public utilities in or on buildings or premises used exclusively by the owning utility or agency.No public.Not regulated by IBC for accessibility and Energy Conservation.


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IBC Classification of Use(s) – 302.0

DetailsMain PointsTitleSection

Smaller occupancies may be regulated as accessory uses to a major occupancy.

Identify specific hazard areas for separation by Table 302.1.1. Apply fire separations, AS

Classify Main Use(s)

Except for H, or per 302.3.1 or 302.1.1, fire barrier not req’d if <10% & <Hgt&Area

Accessory Use Area

302.2

Furnace & Boilers, Parking Garages, Paint Shops, Labs, Laundry, Storage, etc.

Incidental Use Areas

302.1.1

A, B, E, F(1-2, H(1-5), I(1-4), M, R(1-4), S(-2), U, U-PU

General302.1

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IBC Classification of Use(s) – 302.0

DetailsMain PointsTitleSection

Traditional separation of Uses by fire barrier walls and horizontal assemblies

Each portion of bldg is individually classified by use. No fire separations.

Each portion separately classed by Use per Table 302.3.3. Ratios of areas/use must be checked. Exceptions apply.

Separated Uses

302.3.3

Height & Area & Type of Construction of each applies to entire bldg. Other requirements apply to each use. Most restrictive of Hi Rise and FP systems apply.

Non-Separated Uses

302.3.2

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Accessory Use Area – 302.2

Use 1 may be considered an accessory use area if it:-Occupies <= 10% of total floor area, and- Occupies < tabular values permitted for the use (Height & Area), and-Is not a Group H Occupancy, and-Is not an incidental use area regulated by 302.1.1

Use 1

Use 2

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Mixed Occupancies – 302.3.1

BWhere a building is occupied for 2 or more uses not in the same occupancy class, the building shall comply with:-302.3.2, Non-Sep. uses-302.3.3, Separated uses-Combination of sep/non-sep-Group H occupancies must be separated-Section 508 has special provisions.

MF-1

H-3H-3

N/S = FR @ H-3 onlySep = FR @ B/M & F-1/H-3 & FWComb.= FR @ H-3 and FW(FR-Fire Rating, FW-Fire Wall)

FW>

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Allowable Floor Areas of Mixed Occupancies – 302.3.3

B

ProblemGiven a 1 story building of Type V-A construction, with the following uses:B, Office 4,500 s.f.A-2, Assembly 3,000 s.f.E, Educational 6,000 s.f.,

And having no increases for perimeter access,Is the building area within the allowable Area?

A-2

E

a1 + a2 + a3 < 1A1 A2 A3

a = actual areasA= Allowable Areas

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Allowable Floor Areas of Mixed Occupancies –302.3.3

B

A-2

E

a1 + a2 + a3 < 1A1 A2 A3

a = actual areasA= Allowable Areas

Solution4,500 + 3,000 + 6,000 < 1 ?18,000 11,500 18,500

.25 + .26 + .32 = .83

.83 < 1.0

Therefore:The building is within allowable area as a mixed occupancy.

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Amendment – Condominium dwelling Units (310.1.1)

Condominium dwelling units shall be classified as use group R-2 or R-3 as appropriate for design and use.


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Amendment – Use Group R-3 structures (310.1.2)

For fire protection design purposes only, Use Group R-3 structures shall include all buildings arranged for the use of:

One or two family dwellings units or,Multiple single family dwellings where each dwelling unit has an independent means of egress and such dwelling units are arranged horizontally and/or vertically so that each unit shares common walls or floor-ceiling assemblies with not more than 3 other dwelling units.

Re-wording of existing amendment: May use NFPA 13D sprinkler systems in SFDs and NFPA 13R in Quadraplexes and MFD. NFPA 13 systems are required for mid-rise and hi-rise R.

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The 2000 IBCChapter 4 – Special Detailed Requirements Based on Use and Occupancy

The 2000 IBCChapter 4 – Special Detailed Requirements Based on Use and Occupancy


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IBC Chapter 4 – Special Detailed Requirements Based on Use & Occupancy

In addition to the occupancy and construction requirements in the code, the provisions of Chapter 4 apply to special uses and occupancies.

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Chapter 4 - Special Detailed Requirements Based on Use and Occupancy

Motion Picture & Projection Rooms.409Group I-3408Group I-2Motor Vehicle Related OccupanciesUnderground BuildingsAtriumsHigh-Rise BuildingsCovered Mall Buildings402

407406405404403

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Chapter 4 - Special Detailed Requirements Based on Use and Occupancy

Organic Coatings418Drying Rooms417Application of Flammable Finishes416Groups H-1 thru H-5Hazardous MaterialsCombustible StorageAircraft Related OccupanciesSpecial Amusement BuildingsStages and Platforms410

415414413412411

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Amendment – Mall Tenant Separations (402.7.2)

One hour rating required between tenants.One hour rating required between tenant and mall above ceilings.Mechanical penetrations which are part of a smoke removal system do not require fire dampers.

NOTE: The wording of an existing amendment has been clarified.

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Amendment – Applicability Under Sloping Site Conditions (403.1.1)

Provisions of this Section also apply to B, R-1, R2 when such buildings have floors used for human occupancy more than 90 feet above the grade level on any side of the building.


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Amendment – Applicability under rescue conditions (403.1.2)

AS provisions apply to any building 4 or more stories above grade level or >45 feet in height, unless:

o Local FD has Aerial equipment capable of reaching roof (local = 3 road mi.)

o Accessibility on 2 sides by public way (21’ min.)

NOTE: This amendment mimics existing State law.

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Amendment – Fire command center construction features (403.8.1)

The central control room must be located with convenient access to and in close proximity to the grade level entrance lobby, unless an alternate location is approved.The room must be used for no other purpose.The room must have battery emergency lighting.Type /arrangement of FA system subject to approval of FCO.


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Amendment- Elevation Change (406.2.10)

Every opening located between a public garage and another occupancy shall be designed to prevent the transmission of liquids and vapors from entering adjacent occupancies.


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Amendment – Temporary Platforms (410.4.1)

“Platforms installed for a period of not more than 30 days shall be considered temporary platforms. Temporary platforms that exceed 400 square feet in area in places of assembly use shall be of fire-retardant treated lumber….”

NOTE: This is a repeat of an existing amendment, but the wording is clarified.

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Amendment – Underground storage (415.7.3.2.1)

“All underground storage tanks for flammable or combustible liquids shall be separated from adjacent property lines and buildings by not less than 5 feet.”


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Amendments – Security Devices, R-1 and R-2 Uses (419.0)

Locks on doors to non-habitable rooms

Surface mounted locks

Locks on sliding entrance doors

Locks on swinging entrance doors

MFD locks on laundry, storage, trash, similar rooms= min. ½” throw with keys for tenants.

Allowed for existing only. New = mortise type.

Motels, hotels, MFD= hardened steel and “non-jiggling”

Motels, hotels, MFD = deadbolt with 1” min. throw, ½” latch

419.1

419.4

419.3

419.2


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Amendment – Screens for Dwellings (420.0)

420.1 – Locations - Every door from dwelling or MFD to outdoors & 50% of every window, etc., requires screen of not less than 16 mesh per inch. Every door to have self closer. No screens required above 5th

floor.420.2 – Governing Code – Refer to PG Housing Code for actual times that screens must be provided.


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The 2000 IBCChapter 5 – General Building Heights and Areas

The 2000 IBCChapter 5 – General Building Heights and Areas


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IBC Chapter 5 – General (501)

“The provisions of this Chapter control the height and area of structures hereafter erected and additions to existing structures.” (501.1).Height and Area limited by Table 503, with modifications for height (504) and area (506).

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Premises identification (501.2)

Premises Identification.Approved numbers or addresses…

clearly visible from street or roadway fronting the property. (501.2).Minimum 3” in height with 0.5” stroke of contrasting color to the background.11-273 of Fire Safety Law (Subtitle 11) requires numerals of at least 8” in height on commercial, industrial and residential structures, if havingmore than 1 numerical address.

44093”

7758-A 8”

7758-B 8”

NOTE: This is not an amendment. It points out new requirements in the IBC, and related requirements in the Fire Safety Law.

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Chapter 5 – Height and Area Modifications

Mezzanines do not contribute to Area for H&A Table but do contribute to Fire Area in 702, special egress requirements do apply.

Height modifications (sprinklers increase 20’ height and 1 story, except some I-2, H)

H&A limits by Use and Construction Type(basements not included, Special Industrial Exempt)

503

505

504

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Chapter 5 – Height and Area Modifications

Area ModificationsAa=At + [At If/100] + [At Is/100]Aa=allowable area/floorAt=Tabular area/floorIf=Area increase for open frontageIs=Area increase for automatic Sprinklers

300% for 1 story buildings200% for multi-story buildings (except H-1, H-2, H-3)

(Note- single basement level is not included in area)

506

NOTE: This is how the areas modifications are computed in the IBC.

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Area Determination (506.3)

The maximum area of a building shall be determined by multiplying the allowable area per floor (Aa), as per 506.1, by the number of stories up to a maximum of three stories.

Except Unlimited Area Buildings.

A-2 Use, Type VA Const.

2nd floor

1st floor

Max. Area/Flr. = 11,500 s.f.

Maximum Area for Building =

11,500 X 2 = 23,000 s.f.

NOTE: This is how the areas modifications are computed in the IBC.

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Area Determination (506.3)

Given: B Use, IIA Const. & No increasesUp to 5 stories allowed per Table 503Up to 37,500 sf/floor per 503, but onlyUp to 37,500s.f. X 3= 112,500 s.f. total

Could be 5 stories @ 22,500 s.f./floor

Could be 5 stories @ 22,500 s.f./floor

4th floor

3rd floor

2nd floor

1st floor

5th floor Could be 3 stories @ 12,500 sf/flr + 2 stories @ 37,500 s.f./flr

1st floor

3rd floor

2nd floor

4th floor

5th floor

Could be any combinationsup to 5 stories, 65’ height

And 112,000 s.f.

Note: 3 X adjusted area permitted for automatic sprinklers and frontage

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Mezzanines (505)

Aggregate area of mezzanine(s) within a room may not exceed 1/3 of area.Such mezzanine(s) do not contribute to the building area.Such mezzanine(s) do not contribute to number of stories. Source: 2000 IBC Handbook

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Area Increase for Open Frontage (506.2)

Eq. 5-2:If=100 [F/P-0.25] W/30

If=100[(320/360)-0.25] 25/30Note: W=min. width of public wayor open space. W/30 may not >1.0

(or 2.0 for U/L area bldgs.)If=100[0.89-0.25] 0.83

If=100 [0.64] 0.83If=53%

Aa=At + [At If/100] + [At Is/100]

Aa=allowable area/floor

At=Tabular area/floor (Table 503)

If=Area increase for open frontage

P= 100’+80’+60’+40’+80’=360’

F= 100’+80’+60’+40’+40’=320’

Source: 2000 IBC Handbook

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Measuring Yard Width (506.2)

Frontage Increase based on public way or “open space”…Width “W” must be at least 20’ wide to receive open credit.


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Open Areas for Frontage Increases (506.2.2)

Source: 2000 IBC Handbook*subject to approval

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Allowable Area Increases for Sprinklers (506.3)


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Chapter 5 – Height and Area ModificationsUnlimited Area Buildings, F-2, S-2, w/60’ separations and 1 storyA-4, B, F, M, S, 1 story, AS, & 60’ sep. -Exception 1 applies (Type I/II racks with no public, & NFPA 231C compliant sprinkler protection)

507

Special provisions apply for H, Aircraft Hangers, E, Motion Picture theatres, Parking Garages. Also U/L height for B, M, R, with fire resistant cols – see 508.4

507.5 thru 508.8.1

60’ may be reduced to 40’ for 75% of perimeter if 3 hr wall w/3 hour protectives

507.4

Two Story B, F, M, not limited w/AS & 60’

-Exception 2 deleted by amendment (Sprinklers are required in indoor arenas, except main floor – Also see 903.2.1.4 amended)

507.3

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Amendment – Minimum Accessible Perimeter (506.2.3)

A minimum of 25% accessible perimeter is required, fronting on a street or unoccupied space not less than 30’ wide, accessible by a posted fire lane not less than 20’ wide. All weather access to within 100’ of the building is required.Exception – Buildings fully sprinklered and U & U-P/U Uses.

NOTE: This is a carryover of an existing amendment, requiring atleast 25% frontage for firefighting and emergency medical access.

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Amendment – Arrangement of Access (506.2.4)

“Access shall be in accordance with NFPA 1141, Fire Protection in Planned Building Groups, except as otherwise provided for in this SubTitle.”

NOTE: This is a re-statement of an existing amendment in Sub-Title 11 – the Fire Safety Law to provide for fire apparatus access.

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The 2000 IBCChapter 6 – Types of Construction

The 2000 IBCChapter 6 – Types of Construction


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IBC Chapter 6 – Construction Classification (602)

There are 5 Major Construction Classifications in the IBC.

There is no more “2-C” type of construction.Fire Resistance Ratings of Elements are based on the Construction Type.

76

Amendments – Chapter 6

There are no Amendments to Chapter 6

77

Construction Types vs. Combustibility

Comb. (Any Mat’ls.)

Comb. HTComb. (Any Mat’ls.)

NCNCFloor Framing

NC

NC

NC

NC

Type I



NCRoof Framing



NCColumns



NCInt. Walls


NC (FRTW Permitted)

NC (FRTW Permitted)

NCExt. Walls

Type VType IVType IIIType II

Element

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Chapter 6 – Table 601, Fire Resistive Ratings of Elements

01cHT01c0c1c1c1.5cRoof & supports

01HT010122Floors &Supports

See Table 602 (Exterior Walls)See Section 602 (Interior Walls)

Non-Bearing wallsInt &Ext

00

11

21/HT

20

21

00

11

22b

33b

Brng. Walls,InteriorExterior

01201012b3bFraming & Columns

BAHTBABABA

VIVIIIIIIElement

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Key Points – Chapter 6

Buildings are classified as combustible or non-combustible, as well as, protected or unprotected.

Table 601 identifies required fire resistance ratings of elements, based on type of construction.

Unless a fire wall is used, structures can be classified into only one type of construction.

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Key Points – Chapter 6

Types I and II are non-combustible.Types III, IV, V are combustible.Type V is the most common type of

construction.Automatic Sprinklers may be substituted for

fire resistance under certain specific requirements.

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The 2000 IBCChapter 7 – Fire Rated Construction

The 2000 IBCChapter 7 – Fire Rated Construction


82

IBC Chapter 7 – Scope (701.1)

Chapter 7 Governs:MaterialsAssemblies

Used for structural fire resistance and fire resistance rated construction separation of adjacent spaces within buildings and between buildings

83

Key Definitions (702) 1 of 3

A vertical assembly of materials designed to restrict the spread of fire in which openings are protected.

Fire Partition

A fire resistance rated vertical or horizontal assembly of materials designed to restrict the spread of fire.

Fire Barrier

Aggregate floor area enclosed and bounded by fire walls, fire barriers, exterior walls or fire resistance rated horizontal assemblies of a building.

Fire Area

The time period that the through-penetration firestop system limits the spread of fire though a penetration when tested per ASTM E814.

F Rating

84


A continuous membrane, either vertical or horizontal, such as a wall, floor, or ceiling assembly, that is designed and constructed to restrict the movement of smoke.

Smoke Barrier

A fire resistance rated wall having protected openings, which restricts the spread of fire and extends continuously from the foundation to or through the roof, with sufficient structural stability under fire conditions to allow collapse of construction in either side without collapse of the wall.

Fire Wall

85


An assemblage of specific materials or products that are designed, tested and fire resistance rated to resist for a prescribed period of time the spread of fire through penetrations. F and T ratings shall be in accordance with ASTM E814.

Through Penetration Firestop System

An opening that passes through an entire assembly.

Through Penetration

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Comparison of Fire Separation Assemblies

Key CharacteristicsWhere It Is Typically UsedWhat it’s called

Vertical/horizontal construction to prevent smoke going beyond a smoke compartment.

Separate “smoke compartments”.

Smoke Barrier

May stop at the membrane of a fire-resistance rated floor –ceiling or roof-ceiling assembly.

Separate DU’s, guestrooms in R-1, tenant spaces in covered mall bldgs., and corridors from adj. spaces.

Fire Ptn.

Allows complete burnout of 1 side w/out affecting other side.

Separates a structure into separate buildings.

Fire Wall

Runs uninterrupted from floor to deck above. Isolate one portion of a floor from another by wall and floor-ceiling assemblies.

Separates vertical exit enclosures, exit passageways, horizontal exits, incidental use areas and occupancy separations.

Fire Barrier

87

Amendments – Parapets (704.11)

Exception Added (5.3): Deletes the IBC requirements for R-2 and R-3 Uses of:- FRTW sheathing 4’ each side of Party Wall- Type X Gypsum Board on underside of roof on 2” ledgers for 4’ each side of Party Wall or Parapets.

This amendment removes parapet and FRTW sheathing requirements in R-2 and R-3 because Automatic Sprinklers are provided. The IRC is also coordinated by local Amendment to reflect the same cost saving provisions.


Parapets Not

Required with A.S.

FRTW Not Required with A.S.

88

Amendments – Vertical Continuity (of Fire Walls) (705.6) Type X GWB

Not Required with A.S.

FRT Not Required with A.S.

Paragraph 6.5 is added to removeIBC requirements for R-2 and R-3 Uses of:- FRTW sheathing 4’ each side of Party Wall- Type X Gypsum Board on underside of roof on 2” ledgers for 4’ each side of Party Wall or Parapets.

Coordination with 704.11 to provide credit for AS.


89

Amendment – Fire Partitions - General (708.1)

Walls separating tenant spaces in A, B, H, andM (except Mall kiosks) … must be 1 hour rated..The exception for R Use and ½ hour with AS still applies.


90

Amendment – Fire Partitions - Continuity (708.4)

Walls separating tenant spaces in Malls must be continuous to the deck above.


91

Amendment – Protection of Truss Framing Members (713.7)

Combustible truss joist framing, where used as a component of a non-rated floor assembly, must be protected with either:½” Gypsum Wall Board, or, Automatic SprinklersException: crawl spaces of <42” in depth


Provide either gypsum ceiling or automatic sprinkler protection.

92

Amendment – Concealed wall spaces firestopping (716.2.2)

Firestopping is required in concealed spaces of stud wall and partitions … at maximum 10’ intervals both horizontally and vertically.


93

The 2000 IBCChapter 8 – Interior Finishes

The 2000 IBCChapter 8 – Interior Finishes


94


Chapter 8:Governs interior finishes, trim and decorative materials.

95


Limits allowable flame spread and smoke development based on location and occupancy classification (and automatic sprinklers).Exceptions:

Materials < .036 in., applied directly to walls or ceilings.Exposed portions of structural members which meet Type IV construction.

96


Limits allowable flame spread and smoke development based on location and occupancy classification (and automatic sprinklers).Exceptions (continued):

10% trim/decorations unregulated (805.1.2).50% unregulated in Use A with automatic sprinklers (805.1.2).

97

Amendments – Chapter 8

There are No Amendments to Chapter 8

98

The 2000 IBCChapter9 – Fire Protection Systems

The 2000 IBCChapter9 – Fire Protection Systems


99

Amendments - Chapter 9 (AS Plans)

Re-statement of existing amendment describes review assumptions. Eliminates confusion.

Establishes clear design and review standards.

901.2.1.2

Re-statement of existing req’ts in Subtitle 11 (FSL).Re-statement of existing amendment.

Fire Protection shop drawings must be reviewed prior to permit issuance.No plans are required for commercial buildings with 10 or fewer automatic sprinkler heads.

901.2.1

Intent…What it says…Section

100

Amendments - Chapter 9 (A-1, A-2)

Reduces value from 300 to 200 persons (same as previously)

Automatic sprinklers are required in Group A-2 with >200 persons

903.2.1.2

Reduces value from 12,000 to 6,000 s.f. (same as previously)

Automatic sprinklers are required in Group A-1 with floor area > 6,000 s.f.

903.2.1.1

Intent…What it says…Code Sec.


101

Amendments - Chapter 9 (A-3)

Provides relief for arenas where little or no combustibility is present on main floor.

Exception for AS over floor area based on owner statement.

(cont.)

Reduces 12,000 s.f. to 6,000 s.f. & 300 persons to 200 (similar to previous)

Automatic sprinklers are required in Group A-3 with >6,000 s.f. or >200 persons

903.2.1.3


102

Amendments - Chapter 9 (A-4)

Reduces the square footage from 12,000 to 6,000 before AS are required (same as previous). Provides relief for req’ts. over main floor.

Automatic sprinklers are required in A-4 Use if the fire area >6,000 square feet.

903.2.1.4



103

Amendments - Chapter 9 (M, S)

This provides consistency with NFPA Standards.

High-piled storage is defined as >12’ above finished floor for this section.

903.2.6.1

Similar to existing amendment. Square footage relaxed for multi-storied buildings (previously 3,000 s.f./flr.).

Automatic sprinklers are required in Use M > 6,000 s.f. or > 2 stories or if total fire area (including mezzanine) > 12,000 s.f.

903.2.6

Intent…What it says…Sec.

104

Amendments - Chapter 9 (R-1, R-2, R-3, R-4)

Same as existing & AS credits apply (bsmt. Exit NR, 2nd exit NR, escape window size NR, truss ok, 2hr reduced to 1 hr.)

AS req’d. in all R-3 & R-4

903.2.9

Same as existing. Same AS credits apply (omit attic AS if 5/8” DW, combustible balconies ok, omit open air stair AS, omit S/P for 3 story or less, soffit vents ok >3’ from openings.)

AS req’d. in all R-2

903.2.8

Same as existing.AS req’d. in all R-1

903.2.7

Intent…What it says…

Sec.


105

Amendments - Chapter 9 (S-1, R)

Codifies an existing practice in County that allows cost reductions in combined systems.

AS in R may connect to a water closet.

903.3.5.1.2

6,000 is same as existing. Total floor areas relaxed from 3,000 s.f. to 12,000 s.f.

AS req’d. in S-1 > 6,000 s.f. or if > 2 stories or > 12,000 s.f. total on all floors.

903.2.10


106

Amendments - Chapter 9 (Misc.)

Same as existing.Heat tape not permitted for AS

903.7.1

Same as existing.Establishes size of AS zones.

903.6

Same as existing.Establishes AS riser req’ts. & WSSC req’ts. for gradient.

903.3.8

Same as existing.Establishes number of FDC inlets req’d.

903.3.7.1



107

Amendments - Chapter 9 (Miscellaneous)

Same as existing.Fire Hydrant Req’ts.912.0

Same as existing, except FA “lock-in until reset.

Zoning indicator panel req’ts. stated.

907.8.1

Same as existing. (Relief in zone size of 22,500 s.f. vs. 20,000 s.f.)

FA and AS zones must match.

907.8

Same as existing.Mechanical protection for AS piping against vehicular damage req’d.

903.7.2


108

Amendment – Smoke Control Systems Design Report (909.2.1) – New Section

A Smoke Control Design Report is required.It must be Signed and Sealed by a Fire Protection Engineer.Supportive Calculations must.be submitted to Fire Code Official.The report must attest to compliance of design with 909.8, 909.9, and applicable NFPA Codes for smoke control systems.

NOTE: This is a new amendment.

109

The 2000 IBCChapter10– Means of EgressThe 2000 IBCChapter10– Means of Egress


110

Key Definitions or Changes - 1002 (1 of 3)

New definition – not in BOCA.Not in NFPA 101.

Exit enclosure


Egress Court


Door, balanced

Slightly redefined from 1996 BOCA wording to match NFPA 101 in first 2 sentences. 3rd sentence is not in NFPA 101.

Common Path of Travel

111


New definition – not in BOCA.BOCA 1017.4.2 contains ”Panic Hardware” Req’ts. Explained in NFPA 101, 5-2.1.7.1. (not in definitions)NFPA 101, 5-2.1.7 contains “Panic Hardware” Requirements.

Panic Hardware


“Fire Exit Hardware”

New definition – not in BOCA (even though BOCA 1020 contained requirements for Exit Passageways).Not in NFPA 101.

Exit passageway

112


Not defined in BOCA.Not defined in NFPA 101 (in index only).

Stair

Moved from BOCA 1013.2 explanatory material to a definition in IBC.Also defined in NFPA 101.

Smoke Protected Assembly Seating

Not defined in BOCA.Not defined in NFPA 101.

Reviewing Stands

Not previously defined in BOCA. Req’ts. Were in 1016.0New definition matches NFPA 101.

Ramp

113

Assessing Occupant Loads

Design Occupant Load – 1003.2.2Number of occupants determined by largest of:1003.2.2.1 – Actual Number1003.2.2.2 – Number by Table 1003.2.2.21003.2.2.3 – Number by Combination (of accessory spaces,plus the main space occupant load).

Note: Increased Occupant Load – 1003.2.2.4 permits an Increased occupant load over Table 1003.2.2.2 underCertain conditions, up to 5 square feet per person, maximum.

114

Amendment - Increased Occupant Load (1003.2.2.4)

Clarification of the application of this section.

Written approval is required by the FCO in order to increase occupant loads beyond IBC Table 1003.2.2.2

1003.2.2.4


115

Elevation Change – 1003.2.7

<12”

Single Riser generally not permitted.Sloped surface required where change

in elevation is < 12 inches. Ramp if slope > 1/20.

Some exceptions apply:1. Single step with max. Riser of 7

inches in F, H, R-2, R-3 and exterior doors of S and U if not req’d. to be accessible by Chapter 11.

2. Stair with 1 riser or 2 risers and a tread permitted if not req’d. to be accessible by Chapter 11. 13” min. tread and handrail req’d.

3. Aisle seating of <12” elev. Diff. W/ Handrail.

112

18

EGRESS COMPONENT

NON-EGRESS COMPONENT

116

Amendment - Two exit or exit access doorways (1004.2.2.1)

1/4 of length of maximum overall diagonal dimension of the area served with AS. (Measured to doorways.)

MBPSAmended

1/3 of length of maximum overall diagonal dimension of the area served with AS. (Measured to doorways (7.5.1.4)

1/3 of length of maximum overall diagonal dimension of the area served with AS. (Measured to doorways.)

¼ of length of maximum overall dimension of the area served in R-2 of 4 stories or less with AS and open air exterior stairs. (Measured to 3’ of landing edge.)

State Fire CodeNFPA 101-2000

IBC 2000, un-amended

Amendment

NOTE: This is a new amendment, requested by industry, to coordinate with the MBPS amendments and State Fire Code.

117

The 2000 IBCChapter14– Exterior WallsThe 2000 IBCChapter14– Exterior Walls


118

Amendment – Balconies and similar projections (1406.3)

Balconies and similar projections undergoing repair or replacement … must comply with this section.IBC provides for FRTW or AS for balconies in Types III, IV , and V construction.


119

Amendment – Soffits of roof projections (1406.5)

R-1 and R-2 soffit openings shall be covered with minimum of ½” non-combustible material and no vent openings. Exception for AS in attic.

NOTE: This is a new change to existing amendments to permit soffit vents in sprinklered buildings. Attic sprinklers are no longer required in order to comply.

120

The 2000 IBCChapter 30– Elevators and Conveying Systems

The 2000 IBCChapter 30– Elevators and Conveying Systems


121

Amendments - Elevators

1. The State of Maryland Elevator Code, ASME A17.1 is adopted as a Reference Standard.

2. Note that there is a new requirement in the IBC for standby power for 1 elevator in all buildings of 4 or more stories in height.

122

The 2000 IBCChapter 33– Safeguards During Construction

The 2000 IBCChapter 33– Safeguards During Construction


123

Amendments – Chapter 33 – Safeguards During Construction

Excavations of 3’ or more must have a fence or barricade if hazard is created.

3304.1.5

Restoration of lots must comply with Div. 3, Grading and Erosion Control

3303.4, 3307.3


124

Amendments – Chapter 33 –Safeguards During Construction

At beginning and during construction, 12’ wide emergency access road to w/in 200’ of most remote building under construction. Must support 20 ton vehicle under all weather conditions (Subtitle 11 also).

3313.0

Excavations cannot harm adjacent properties.

3307.2

Div. 3 applies if it conflicts with Chapter 333304.1.6

125

The 2000 IBCEND OF NON-STRUCTURALAMENDMENTS GUIDE

The 2000 IBCEND OF NON-STRUCTURALAMENDMENTS GUIDE


The Prince George’s County Department of Environmental Resources

Documents

PG_IBC 2000 Guide