NADRA 2015 IRC Code Survey
RequiredRequired Question(s)
This survey is intended to give you an opportunity to submit feedback to NADRA for representation at the upcoming code hearings. Glenn Mathewson provided deck-related code changes below - they are spelled out in layman terms.

The full report from Glenn, with his opinion can be found HERE. This will help you tremendously when looking at the proposed changes and understanding exactly what they mean.

The link to read all proposed changes from the ICC Building Committee can be found HERE. (This will take a few moments to load - very large file
 
Required 1.

GUARD DEFLECTION LIMITS

 

RB61-13

Guards are one of the few construction features that is provided a minimum live load resistance, but not a deflection limit.  Usually the two go together.  Just how far can something stretch without failure and still be okay?  Justifiably...this is a bit of an anomaly in the code, and it's no wonder a proposal is out there to change that.

This proposal seeks to end this anomaly, but yet add another ambiguity.  Deflection limits proposed, while perhaps reasonable, will not be verifiable during inspection.  Guard posts can deflect about 3 inches, and top rails downward about 1 inch over 8 feet.  This deflection would presumably be determined during a 200 lb. load placed at the top of the rail, either at guard post, or between guard posts.  This, of course, is the 200 lb. load that is supposed to be tested at 400 to 500 lb, but is usually tested with a push by the inspector.

The proposal is made complicated with the inclusion of the combination post and horizontal top rail deflection.  In this criterion, a guard top rail cannot deflect outward by more than a combined amount of approximately 1.5 inches in the post plus 1 inch over 8 ft. in the horizontal rail.

In Favor
Not in Favor
With Modifications - see comments
No Opinion
  • Comment:

  • 500 characters left.
Required 2.

DECK AND STAIR DISTANCE TO PROPERTY LINES

 

RB66-13

Provides an exception to fire resistive construction for decks greater than 5 feet from the property line or the dwelling.  However, decks aren't very clear in fire separation distance requirements ("setbacks" from property lines).  This proposal may inadvertently require fire resistive construction of low level decks less than 5 feet where previously not required.

In Favor
Not in Favor
With Modifications - see comments
No Opinion
  • Comment:

  • 500 characters left.
Required 3.

DECK AND STAIR DISTANCE TO PROPERTY LINES

 

RB74-13

Prohibits exterior stairways less than 5 feet from lot lines and other buildings on the lot.  May inadvertently restrict stairs on low level decks, or stairs from a deck between a home and a detached garage.

In Favor
Not in Favor
With Modifications - see comments
No Opinion
  • Comment:

  • 500 characters left.
Required 4.

DECK AND STAIR DISTANCE TO PROPERTY LINES

 

RB75-13


Prohibits accessory structures, such as patio covers and decks, whether attached or detached, less than 5 feet from lot lines.  May unnecessarily limit deck construction near property lines.

In Favor
Not in Favor
With Modifications - see comments
No Opinion
  • Comment:

  • 500 characters left.
Required 5.

ILLUMINATION OF EXTERIOR STAIRWAYS

 

RB102-13

Removes all requirements for illumination of exterior stairways.

In Favor
Not in Favor
With Modifications - see comments
No Opinion
  • Comment:

  • 500 characters left.
Required 6.

SAFETY GLAZING


RB115-13

Clarifies that glass behind the stairs at the bottom of a stairway does not need to be safety glazed.  Clarifies a requirement that would be senseless as previously written. 

In Favor
Not in Favor
With Modifications - see comments
No Opinion
  • Comment:

  • 500 characters left.
Required 7.

 MEASURING DECK HEIGHT

 

RB143-13

Eliminates the requirement to measure the height of a deck from a point 36 horizontally from the edge when determining if guards are required.  Measurement would return to being at the edge of the walking surface.  Specifies that only floors, stairs, ramps and landings require guards, intending to exclude landscaping features from regulation.

In Favor
Not in Favor
With Modifications - see comments
No Opinion
  • Comment:

  • 500 characters left.
Required 8.

MEASURING GUARDS

 

RB145-13

Eliminates measuring required guard height from fixed seating.  Allows guards at built in bench seating to no longer be measured from the bench seat.  Restores previous design freedom allotted by the IRC. 

In Favor
Not in Favor
With Modifications - see comments
No Opinion
  • Comment:

  • 500 characters left.
Required 9.

BLOCKING OVER BEAMS

 

RB247-13

Eliminates the requirement for blocking over a beam when joists cantilever 24 inches or less.  Only applies in specific seismic zones.  Provides for added flexibility in installing deck drainage systems over dropped beams. 

In Favor
Not in Favor
With Modifications - see comments
No Opinion
  • Comment:

  • 500 characters left.
Required 10.

HANGERS ON BEAMS AND LEDGERS

 

RB253-13

Prohibits connection of hangers solely to the bottom half of beams.  Requires all joists to be fastened with approved connectors when framed into the side of a beam.  Will restrict design flexibility in designs such as 2x6 joists hanging from the bottom portion of a 2x12 beam or ledger. 

In Favor
Not in Favor
With Modifications - see comments
No Opinion
  • Comment:

  • 500 characters left.
Required 11.

LATERAL LOADS


RB260-13

Requires the two hold-down tension devices (permitted by the IRC) to be installed within 24 inches of the end of each deck.  Adds to an already confusing code provisions currently lacking justification.  

In Favor
Not in Favor
With Modifications - see comments
No Opinion
  • Comment:

  • 500 characters left.
Required 12.

LATERAL LOADS


RB261-13

Provides an exception for hold-down tension devices in decks less than 30 inches above grade.  By providing an "exception" to something that is only "permitted" but not required does not make any sense.  By default, it will make the argument that the anchors are required even stronger. 

In Favor
Not in Favor
With Modifications - see comments
No Opinion
  • Comment:

  • 500 characters left.
Required 13.

LATERAL LOADS


RB262-13

Provides a second lateral load connection method using an angled bracket connecting to the bottom of the joists and wall plates in the house.  Requires connection to be made in four locations with 750 lb. each (when connection is used).  This proposal builds on the unfounded 1500 lb load in two locations, and will make it that much harder to propose accurate and tested values in the future.  

In Favor
Not in Favor
With Modifications - see comments
No Opinion
  • Comment:

  • 500 characters left.
Required 14.

LATERAL LOADS


RB263-13

Provides an exception for hold down devices in decks less than 30 inches above grade, provided the deck is connected to a band joist.  There cannot be an exception to something that is not a rule.

In Favor
Not in Favor
With Modifications - see comments
No Opinion
  • Comment:

  • 500 characters left.
Required 15.

PRESCRIPTIVE DECK CONSTRUCTION

 

RB268-13

This is a very large proposal for complete prescriptive requirements for deck construction.  I attended a meeting with a number of prominent organizations in Virginia last year to discuss the original draft of this document.  Working with these other organizations under mutual respect and mutual compromise, we were able to agree on a minimal version of this proposal at this time.  It was discussed quite positively that this group would continue to work together in the future on quality deck codes.  The agreed upon proposal was put forth from NADRA and others in RB264.  A few members at the meeting did not appreciate the mutual respect and compromise that we worked to achieve, and submitted a larger version of the draft on their own.  That draft is represented in this proposal, and works to undermine the relationships, understanding and mutual compromise that this group had begun. 

In Favor
Not in Favor
With Modifications - see comments
No Opinion
  • Comment:

  • 500 characters left.
Required 16.

CONNECTION TO BRICK VENEER

 

RB373-13

Moves the long-standing prohibition of supporting loads on brick veneer to a different section heading in the IRC.  This is an organizational change only.


In Favor
Not in Favor
With Modifications - see comments
No Opinion
  • Comment:

  • 500 characters left.
17.
We've highlighted a handful of code changes in this survey - there is a list of more changes that may need further review.   Have a look.  See the possibilities for your future, and then speak up.  You can send your reply in the comments box below, or you can send them to Info@NADRA.org 
 

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18.

Do you have any particular question(s) you would like addressed? You may ask them in the space provided below.  Please fill out question #19 if you would like a direct response. Thank you! 

 

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19.
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