Transcript April 25, 2016 – Code Update Training, Fort Collins

2015 Building Codes Update Training
April 25, 2016, 7:30 – 10 AM
200 West Oak St., Fort Collins, CO
Larimer County Courthouse Office Building
Commissioners Hearing Room
Code Update Training Outline
• Food, Coffee, Breaks
• Location of Bathrooms
• Introduction of Instructors
• Who is Here (in general)
In 2.5 hrs we ,will mostly focus on
local amendments & IRC Changes
See back of packet for sources of more
information and training feedback form
2015 Code Review & Adoption Timelines
 May to October 2015 – Code Review Committee met biweekly
 November 18, 2015 – Code Presented to Board of Appeals
 January 13, 2016 – Joint Worksession on Code Changes for
Planning Commission & Board of County Commissioners
 February 17, 2016 – Planning Commission Hearing
 March 7, 2016 – Board of County Commissioners Hearing
 April 25, 2016 – Code Update Training, Fort Collins
 April 27, 2016 – Code Update Training , Estes Park
 May 1, 2016 – 2015 Codes Go Into Effect
2015 Code Review Committee
The following community members served on the committee, along with bldg. dept. staff:
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Joseph Bastian, Arconstructure
Greg Black, Structural Engineers Association of Colorado
Gary Dennison, Vaught Frye Architects
Mitch Greeno, Philgreen Construction
Paul Higman, GS Services
Dale Jones, Structural Engineer
Brandon Myers, Westmark Homes
Russ Weber, Safebuilt
Significant LOCAL Changes
to 2015 Codes
 Administrative Provisions (Permits Required,
Exemptions, Expiration, As-Built Permits)
 Structural Design Criteria (Snow & Wind Loads)
 Fire Separation of Homes from Garages, Shops,
Barns, and Similar Structures
 Energy Efficiency
IRC Permit Exemptions R105.2
Remember: Exempt work still must meet code minimum requirements
3. Technical change to definition of which retaining walls need permits [See Figure 105.2.3]
8. Elevated playhouses not over 64 square feet area nor 8 feet high from floor to highest point
10. Removed size limits on decks not over 30” high and not part of the required exit
13. Replacement of non-structural siding
14. Private greenhouses with max. 6-mil poly roof materials and no utilities.
15. Solar thermal and PV systems on structures otherwise exempt from permit requirements.
16. Bridges or culverts constructed under another county permit , culverts and private pedestrian
bridges that serve only one residence and are not in a regulatory floodplain or countydesignated major drainage way, which can be found at
http://larimer.org/engineering/floodplain/majordrainage_map.htm.
Retaining Walls Exempt from Permit
Requirements – IRC 105.2 #3
Private Bridge and Culvert Permits
What is a, crossing?
A crossing is a bridge or culvert that is designed to
allow the movement of people or equipment across
streams, rivers creeks, or irrigation ditches.
Why do crossings need Building Permits?
Properly designed and constructed crossings ensure
public safety and compliance with drainage and
floodplain requirements.
Are there other County Permits required for my
crossing?
Other County permits that may also be applicable for
your project are a Floodplain Development Permit,
Right-of-Way Work Permit, Access Permit, Private
Road Construction Permit, and Development
Construction Permit. See
http://larimer.org/engineering/access/index.htm for
details on what other permits may be applicable.
Primary Contacts:
Eric Fried
Building Official
(970) 498-7705
Eric Tracy
Floodplain Administrator
(970) 498-5729
Bridge/Culvert Permit Submittal Requirements
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A building permit application form
Five (5) copies of a plot plan
– Drawn to scale showing location of the crossing (See Plot Plan Requirements Handout)
Two (2) sets of plans
– Plans must be signed and stamped by a registered Colorado professional engineer.
– Plans for culverts must include detailed manufacture’s specifications showing the allowable loads
and installation instructions, or be designed and stamped by a registered Colorado professional
engineer.
– Plans for a crossing of an irrigation ditch must be signed by an appropriate representative of the
affected Irrigation Company
One (1) copy of the hydraulic and erosion protection analysis
– Signed and stamped by a qualified professional engineer
Prior to a letter of completion from the Building Department, the applicant must submit to the Building
Department a certification letter, signed and stamped by a Colorado registered professional engineer,
verifying:
– The crossing was inspected during the construction process.
– The construction was completed pursuant to the approved set of building plans.
Structural Design Criteria
• Wind
• Snow
• Seismic
• Flood
Table 301.2 (1) Climactic and Geographic Design Criteria
(Additional criteria shall be established by the local jurisdiction and set forth in Table 301.2 (1)
Ground
Snow
Loadl
Ultimate
Wind
Speed dm
Seismic
Design
Category f
SUBJECT TO DAMAGE FROM
Weatheringa
35psf<5000’
45psf<6000’
50psf<6500’
60psf<7000’
70psf<8000’
100psf<9000’
140psf<10000’
Engineered
design required
over 10,000’
115-225
mph
185-362
kph
B
Severe
Iceh
barrier
underlayment
required
Frost
Line
Depth
No,
except in
the Class
B roofing
area in
the
foothills &
mountains
30
inches
762m
Winter
Design
Tempe
Termitec
Decayk
No, Slight
to
moderate
None to
Slight
Air
Freezing
Indexi
Mean
Annual
Temp.j
Floodg
Hazards
(a)1973
b
+10 F
(-170 C)
906,
except
920 in
the Class
B roofing
area in
the
foothills &
mountains
48.4 oF
(b)2007
No prescriptive tables for rafters above 70 psf ground snow load
in IRC, IBC or WFCM will require engineered design anyway.
Why Higher Ground Snow Loads?
 Building Code maps have always required the Larimer County Building
Official to determine local snow loads
 Existing Ground Snow Loads in Larimer County did not comply to any
recognized engineering study – data was closer to roof snow loads
 Engineering practice allows reduction of roof snow loads depending on
factors like exposure, slope, roof type, heating
 Many, if not most, engineers were designing roofs to withstand higher
snow loads than the minimum allowed by the county
 Recent County Strategic Planning Initiative directed Building Official to
look at local codes and determine if they were adequate to protect against
natural hazards like flood, fire, high wind & heavy snow
 AT the same time, the Structural Engineers Association of Colorado was
completing a new, comprehensive, statewide snow load study
recommending higher ground snow loads be used
What does this mean for me?
• IRC prescriptive rafter design (Tables R802.5.1) for
ground snow loads of 20, 30, 50 and 70 psf
• Interpolation between tables is allowed
• No prescriptive tables above 70 psf = Engineered
Design Required
• Can use IBC and ASCE 7-10 for allowable reductions
from ground to roof snow load
• Roof snow load design will be 30 psf, minimum
• Most roofs are framed with engineered trusses truss designers will need to use the new snow loads
Table 301.2 (1) Climactic and Geographic Design Criteria
(Additional criteria shall be established by the local jurisdiction and set forth in Table 301.2 (1)
Ground
Snow
Loadl
Ultimate
Wind
Speed dm
Seismic
Design
Category f
SUBJECT TO DAMAGE FROM
Weatheringa
35psf<5000’
45psf<6000’
50psf<6500’
60psf<7000’
70psf<8000’
100psf<9000’
140psf<10000’
Engineered
design required
over 10,000’
115-225
mph
185-362
kph
B
Severe
Iceh
barrier
underlayment
required
Frost
Line
Depth
No,
except in
the Class
B roofing
area in
the
foothills &
mountains
30
inches
762m
Winter
Design
Tempe
Termitec
Decayk
No, Slight
to
moderate
None to
Slight
Air
Freezing
Indexi
Mean
Annual
Temp.j
Floodg
Hazards
(a)1973
b
+10 F
(-170 C)
906,
except
920 in
the Class
B roofing
area in
the
foothills &
mountains
48.4 oF
(b)2007
No prescriptive tables for rafters above 70 psf ground snow load
in IRC, IBC or WFCM will require engineered design anyway.
R301.2.1.1 Wind limitations and wind design required
In regions where wind design is required in accordance with Figure
R301.2(4)B, the design of buildings for wind loads shall be in accordance with
one or more of the following methods:
6. Larimer County’s Prescriptive Design Limitations in
High Wind Areas Exceeding 110 mph DELETED
Pole barns and loafing sheds may be still
be built per Larimer County’s
Prescriptive Design Standards
Looking up Site
Wind & Snow Loads
On the web, go to maps.larimer.org/wsil
(wind snow information locator)
Input address, parcel number, or name in search box on right;
app will display site elevation, snow load, wind load, wildfire
hazard area, roof classification, ice/water shield requirement.
WSIL is currently displaying 2012 code values
After May 1, 2016, WSIL will display new snow loads
Wind speeds will not change except that
values displayed will be Ultimate not Nominal Design
Design your snow loads now to 2015 values based on elevation
NOTE: Larimer County amendment to Section R302.1
effects size and fire separation between accessory
structures and residential dwellings
Fire separation of homes from
garages, shops, barns, sheds
R302.1 Exterior walls. Construction, projections, openings and
penetrations of exterior walls of dwellings and accessory
buildings shall comply with Table R302.1(1); or dwellings
equipped throughout with an automatic sprinkler system
installed in accordance with Section R313 shall comply with
Table R302.1(2). Accessory structures exceeding 5,000 sq. ft. in
floor area within the fire separation distance shall be separated
from the dwelling by a Fire Containment Assembly as defined in
2015 International Building Code Section 702.1
Exceptions:
2. Walls of dwellings and accessory structures located more than
six (6) feet apart on the same lot.
What’s a Fire Containment Area?
IBC 702.1 as amended by Larimer County:
Fire-Containment Area. A portion of a story or basement which is totally
enclosed by a smoke and draft barrier of not less than 1-hour, fire-resistive
construction. All door openings penetrating such fire-containment areas shall
be protected by a tight-fitting, smoke and draft control assembly as specified
in Sections 716.5.3, 716.5.5 and 716.5.9. Openings other than doors and
ducts shall be protected as specified in Sections 716.6 and 716.6.5 and shall
be limited to a maximum of 25 percent of any one wall, in compliance with
section 716.6.7.2. All duct penetrations shall be protected by dampers as
specified in section 717, Table 717.3.2.1, and section 717.3.3.2 (smoke
dampers), except that such dampers shall be automatic closing by actuation
of a smoke detector. Self-closing devices may be used in lieu of automatic
closing devices on doors unlikely to be fixed open during normal conditions,
such as doors at toilet rooms, stairways, closets, small storage rooms and
similar areas.
What does that mean for me?
• Utility buildings up to 5,000 sq. ft. have the same requirements as now, if
attached or within 6’ at the closest point to the home, including overhangs
and projections: ½” gypsum walls, 5/8” ceilings, self-closing firedoors
• Barns/shops/garages at least 6’ from homes have no fire protection
requirements
• Larger barns/shops/garages within 6’ of the home (the “Fire Separation
Distance”) need to meet a higher fire protection standard
• WHY? Code writers may not envision a 20-car garage or 10,000 sq. ft. barn
attached to a home. In our opinion, ½” gypsum walls and a 20-minute
rated door are not enough of a safety margin for “unlimited” size
accessory areas
• On the plus side, we will no longer need to go to the IBC and its 2-hour
Firewall or sprinkler requirements, for larger attached barns/garages
Wildfire Mitigation Change
• As part of the Strategic Planning effort, we
looked at local Wildfire Hazard Area
regulations in effect for almost 20 years
• We decided wholesale changes, such as
adopting the Wildland-Urban Interface Code,
were not needed and would not help much
• ONE Change was made to slow the spread of
fire through burning embers landing in grass
or shrubs next to wood-sided houses
R327.5 Fire-Resistive Construction
Fire-resistive construction on all new structures shall be one of the following types:
One-hour fire-resistive shell shall provide not less than one-hour fire-resistive
construction at all exterior walls, excluding all openings and decks.
Exterior siding materials shall have a flame-spread classification of Class C or better.
Exterior siding shall be composed entirely of non-combustible materials for a
minimum of three (3) feet above finished grade.
Exceptions: Log homes using solid logs with a minimum tip diameter of 6 inches for
exterior wall construction and 8 inches for roof beams, purlins and supporting
columns may be considered as one-hour fire-resistive construction.
R327.6 Defensible Space. Defensible space in compliance with current Colorado
State Forest Service guidelines shall be required on all new construction in the Wildfire
Hazard Area. Any landscaping materials or natural ground cover within three (3) feet
of the exterior walls of the building shall be non-combustible.
Bottom Line: No combustible siding or ground cover allowed at final
inspection within 3’ up or out at exterior grade in the Wildfire Hazard Area
R313 – No changes
Sprinklers continue to
NOT be required
in single family homes by
local amendment to the IRC.
Sprinklers may still be required
by subdivision conditions of
approval or for homes in the
Berthoud Fire District.
R302.13 Fire Protection of Floors
(Old Section R501.3)
• Floor Assemblies that are not required
elsewhere in this code to be fire-resistance
rated shall be provided with ½ inch gypsum
wallboard membrane…..
Remains deleted by local amendment
A small sampling of IRC Updates
For more information,
please purchase ICC’s
“Significant Changes to
the International
Residential Code, 2015
Edition” from
www.iccsafe.org
Hard-wiring is required for new construction. Battery-operated
and plug-in allowed for alterations, additions and repairs.
Mechanical and plumbing work does not require CO alarms.
By local amendment, makeup air only required
for exhaust hoods over 600 cfm, not 400 cfm
By local amendment, pump failure must sound audible alarm
in habitable space, not shut down equipment, which could
cause more damage from frozen pipes than pump failure
By local amendment, a10 PSI air test is still allowed
as an alternative for testing DWV pipe.
Water tests are not practical much of the year.
2015 IBC/commercial code changes
Similar to IRC:
 Same additions to permit exceptions
 Updated Snow and wind load criteria
 Same Wildfire Hazard Area Amendment
 Exempted New Commercial Buildings
under 15,000 sq. ft & Additions/Alterations
from Commissioning Requirements
 Rooftop Photovoltaic Panels must be
Class C fire-rated minimum (instead of
same classification as roof covering)
Questions?
Comments?
Other Code Sections
to Discuss (if time allows)?
Want more information
on 2015 Code Changes?
 Contact us if you would like us to e-mail you a list of
Significant Changes to the Commercial codes,
prepared by Stan Griep, Commercial Plans Examiner
 Significant Changes to the 2015 IBC, and 2015 IPC,
IMC & IFGC are also available from www.iccsafe.org
 This powerpoint presentation will soon be posted to
www.larimer.org/building, and available to download
The End (Almost)
Thank you for coming.
We hope the code update training will be useful
to you as you work
in Larimer County in coming years.
Have a good rest of your day/week.
Eric Fried
Building Official
on behalf of all the public servants working
in the Community Development Division
Followup and Contact Information
Please help us make this update training better.
You can fill out this page and leave it here, drop it off at our office,
mail it to us, or send an email to [email protected]
For further contact info, go to www.larimer.org/building
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