2018 International Building Code - Columbia, Missouri

2018 International Building CodeVery few consequential changes.Definitions added or amended for clarification purposes:Sleeping Unit-Single unit providing rooms or spaces for one or more personsthat includes permanent provisions for sleeping and can include provisions forliving, eating and either sanitation or kitchen facilities but not both. Such roomsor spaces that are also part of a dwelling unit are not sleeping units.Repair Garage-A building, structure or portion thereof used for servicing orrepairing motor vehicles. (Replicated from the IFC)Greenhouse-A structure or thermally isolated area of a building thatmaintains a specialized sunlit environment used for and essential to thecultivation, protection or maintenance of plants.

GREENHOUSES In a greenhouse, the environment is such that it is maintainedexclusively for, and essential to, the aggressive propagation ofplants used by commercial growers for plant production. (Exemptfrom building thermal envelope requirements per IECC C402.1.1) It is acceptable for other activities to be conducted in a greenhouse,such as retail sales, educational research, conservation, educationand assembly use. The occupancy class of a greenhouse will bedetermined accordingly. Greenhouses not classified as another occupancy shall be classifiedas Use Group U.

302.1 Classification of Occupied Roofs Although the City of Columbia already interpreted the codethis way it has been clarified that occupied roofs are to beassigned one or more occupancy classifications in a mannerconsistent with the classification of uses inside the building,based upon the fire and life safety hazards posed by therooftop activities. For example, where a rooftop contains a restaurant having anarea/occupant load for 50 or more persons, the occupied roofwould be classified as an A-2 occupancy in order to addressthose hazards associated with such an assembly use.

311.2 Classification of Self-ServiceStorage FacilitiesAgain, the City of Columbia already interpreted the code this waybut it has been clarified that self-service storage facilities, due tothe reasonable expectation it will contain a considerable amountof combustible materials, shall be classified as a Group S-1moderate-hazard storage.

311.1.1 CLASSIFICATION OFACCESSORY STORAGE SPACES Regardless of size, storage rooms and storage spaces that areaccessory to other uses are to be classified as part of theoccupancy to which they are accessory. The key point is the hazard level that storage brings to thebuilding. It is assumed that accessory storage uses pose littleadditional hazard above the occupancies which they serve. Where storage activities pose a significantly higher hazardthan the other uses in the building, they will not beconsidered accessory.

503.1.4 Allowable Height and Area of Occupied Roofs A roof level or portion thereof shall be permitted to be used as an occupied roofprovided the occupancy of the roof is an occupancy permitted by Table 504.4 for thestory immediately below the roof. The area of the occupied roof shall not be included inthe building area as regulated by Section 506. (Any elements that enclose the occupiedroof area are limited to a maximum height of 4 feet above the roof’s surface.)Exceptions:1. The occupancy located on an occupied rood shall not be limited to the occupanciesallowed on the story immediately below the roof where the building is equippedthroughout with an automatic sprinkler system and occupant notification is provided in thearea of the occupied roof.2. Assembly occupancies shall be permitted on roofs of open parking garages of Type 1or Type 2 construction.

Table 705.2 Extent of Projections The minimum required clearance between the edge of aprojection and the line used to determine the fire separationdistance has been significantly decreased.

1004.8 Occupant LoadCalculation for Business Use The method of calculating occupant load in business areas hasbeen revised, which will typically result in reduced designoccupant loads. However, higher design occupant loads cannow be assigned to concentrated business areas such astelephone call centers and similar uses. The occupant load factor for business areas changes from 100sf to 150 sf. For concentrated business use areas the occupant load factorchanges to 50 sf.

1603.1 ConstructionDocuments Construction document requirements for environmental andspecial loads have been updated for rain, snow and windforces and their components. The roof slope factor, Cs, has been added to the required listof snow load data and factors. Rain load data is added to the list of design loads required onconstruction documents. Special loads, such as loads of machinery or equipment, shallbe specified by their descriptions and locations.

1604.3.7 Deflection of Glass Framing 1604.3.7 Framing supporting glass.The deflection of framing members supporting glass subjected to 0.6 timesthe “component and cladding” wind loads shall not exceed either of thefollowing: 1. 1/175 of the length of span of the framing member, for framing membershaving a length not more than 13 feet 6 inches (4115 mm). 2. 1/240 of the length of span of the framing member 1/4 inch (6.4 mm),for framing members having a length greater than 13 feet 6 inches (4115mm). The limits do not allow a reduction to this design load for deflectionanalysis as was previously permitted in footnote f in the 2015 IBC Table1604.3.

Table 1607.1 Deck Live Load Table 1607.1 is now consistent with the provisions in the 2010and 2016 editions of ASCE 7 for minimum uniformlydistributed live loads on decks and balconies by increasing thedeck live load to one and one-half times the live load of thearea served. Not required to exceed 100 psf.

Deck Collapse

IBC 3109 Swimming Pools,Spas and Hot Tubs 3109.1 The design and construction of pools shall comply with theCity of Columbia 2015 “Swimming Pool Ordinance and Guide forSwimming Pool Design and Operation”. This document may befound in Chapter 11, Article VIII, Ord. No. 22439. 3109.2 Barrier requirements must meet the standards of the 2018International Swimming Pool and Spa Code (ISPSC) Section 305. Where spas or hot tubs are equipped with a lockable safety covercomplying with ASTM F1346 and swimming pools are equippedwith a powered safety cover that complies with ASTM F1346, theareas where those spas, hot tubs or pools are located shall not berequired to comply with Sections 305.2 through 305.7.(BarrierRequirements)

2018 International Existing Building CodeSection 1106-Storm Shelters1106.1 Addition to a Group E occupancy.Where an addition is added to an existing Group E occupancylocated in an area where the shelter design wind speed fortornados is 250 mph in accordance with Figure 304.2(1)of ICC500 and the occupant load in the addition is 50 or more, theaddition shall have a storm shelter constructed in accordancewith ICC 500.

2018 IEBC Section 1106Storm Shelters Continued1106.1.1Required occupant capacity.The required occupant capacity of the storm shelter shall include all buildings on the site, and shallbe the greater of the following:1. The total occupant load of the classrooms, vocational rooms and offices in the Group E occupancy.2. The occupant load of any indoor assembly space that is associated with the Group E occupancy.Exceptions:1. Where an addition is being added on an existing Group E site, and where the addition is not ofsufficient size to accommodate the required occupant capacity of the storm shelter for all of thebuildings on-site, the storm shelter shall at a minimum accommodate the required capacity for theaddition.2. Where approved by the code official, the required occupant capacity of the shelter shall be permittedto be reduced by the occupant capacity of any existing storm shelters on the site

2018 International Fire Code (IFC)Section 1103.5.1Section 1103.5.1 was expanded to have a retroactive requirementrequiring “Where alcoholic beverages are consumed in a Group A-2occupancy having an occupant load of 300 or more, the fire areacontaining the Group A-2 occupancy shall be equipped with anautomatic sprinkler system in accordance with Section 903.3.1.1. Thisprovision was a response to the Station Nightclub fire of 2003 inWarwick, Rhode Island that killed 100 people and injured 230. Thecharacteristics of the Station Nightclub and activities associated withthe fire were discerned to be very dissimilar to theestablishments/activities that would be effected by this provision inColumbia, Mo. An amendment was proposed and adopted to deletethis new provision.

2018 International Fire Code (IFC)Section 3105 In the 2015 IFC Section 3105 was introduced regulating TemporaryStage Canopies. A Temporary Stage Canopy is defined as “Atemporary ground supported membrane-covered frame structureused to cover stage areas and support equipment in the productionof outdoor entertainment events. The 2018 IFC expanded theseregulations to govern all Temporary Event Structures which aredefined as “Any temporary ground-supported structure, platform,stage, stage scaffolding or rigging, canopy, tower supporting audioor visual effects equipment or similar structures not regulatedwithin the scope of the International Building Code.”

2018 International Fire Code (IFC)Section 3105 Continued The BCCC and Fire Department agreed this change to thecode, in particular the associated documentation and specialinspections, was over-reaching/burdensome for the needs ofour community. An amendment was proposed and adopted toreplace “Temporary Special Event Structure” with the 2015language of “Temporary Stage Canopy.” The intent is toenforce these requirements for Temporary Stage Canopiesonly as in the 2015 IFC. Other temporary structures will beevaluated for safety per IBC standards.

2018 INTERNATIONAL RESIDENTIAL CODE Very few major changes. Mainly reformatting and clarification. Many previous amendments have been removed because thecode caught up with us or the commission believed they areno longer necessary. Enforcement of Manual J requirements changes. New standards for location of electric meters.

City of Columbia Code of OrdinancesSec. 27-96 – Meter LocationMeters shall normally be installed outdoors in a location approved by the department.New Standard: Meter will be mounted on the dwelling at the closest point from the transformer orsecondary box (No more than 6 feet back from the corner), such that the service conduit does not crossunder sidewalks, driveways or other obstructions. Meters mounted at other locations on the dwellingwill be approved only if the customer furnishes and installs the conduit system per Water & Lightstandards and inspection. These standards will be:-3" schedule 40 PVC conduit-36" radius bends-Slip joint coupling below meter-3 feet of earth cover-Conduit to be installed from meter to 10 feet from transformer or secondary box.-Conduit must be inspected by CWL prior to backfill.

DESIGN CRITERIA & MANUAL J Table R301.2.(1) Climatic and Geographic Design Criteria NOW INCLUDES Manual Jcriteria.The requirement for a Manual J assessment or engineered equivalent has been in theIRC for several editions. To assist the designer, jurisdictions will now include variablesfor Manual J assessments with other climatic and geographic design criteria availablefrom the building department.Building and Site Development (BSD) has required the Manual J to be posted at the finalinspection since the 2012 IRC was adopted. We have discovered the Manual J designcriteria has not been uniform and accurate.With the overwhelming movement toward energy compliance alternatives to theEnergy Code it is imperative the Manual J design criteria match the energy compliancedocuments. BSD will now require the manual J to be onsite at rough-ins to verifythese documents match. (Energy Compliance documents contain the inputs foraccurate Manual J reports and should be shared with the HVAC contractor!)

TABLE R301.2(1)MANUAL J DESIGN CRITERIA

Proposed Manual J Checklist