Examples of code prescribed deflection limits and live load values are.
Ibc roof deflection limits.
Both i codes just say floors 13 years ago.
For aluminum structural members or panels used in roofs or walls of sunroom additions or patio covers not supporting edge of glass or sandwich panels the total load deflection shall not exceed l 60.
See the table below.
This section deals specifically with the required live loading for aluminum canopies.
The international codes i codes are the widely accepted comprehensive set of model codes used in the us and abroad to help ensure the engineering of safe sustainable affordable and resilient structures.
Chapter 3 of the international residential code irc provides the maximum allowable deflection for a given structural member floor roof wall etc.
For secondary wall members supporting formed metal siding the design wind load deflection shall not exceed l 90.
I don t see any exception for decks or for floors which have different finishes on the underside.
For continuous aluminum structural members supporting edge of glass the total.
For structural roofing and siding made of formed metal sheets the total load deflection shall not exceed l 60.
Bedrooms and habitable attic floors l 360 30 psf.
For secondary roof structural members supporting formed metal roofing the live load deflection shall not exceed l 150.
Living room floors l 360 40 psf.
Note it gives the allowable deflection based on a fractional span quantity so a larger denominator will yield less deflection.
For structural roofing and siding made of formed metal sheets the total load deflection shall not exceed l 60.
For the purpose of the determining deflection limits herein.
For secondary roof structural members supporting formed metal roofing the live load deflection shall not exceed l 150.
The international code council icc is a non profit organization dedicated to developing model codes and standards used in the design build and compliance process.
Although it does not specifically name glazed components or assemblies or framing supporting glazing it does establish a deflection limit of l 240 for exterior walls supporting brittle finishes other than plaster or stucco.
Typical deflection limits referenced in code books are l 360 l 240 or l 180.
The ibc which wouldn t apply to a sfr allows the greater deflection for roofs supporting non plaster finishes but like the irc it gives one deflection limit for floors period.
In the 2015 ibc the body of table 1604 3 limits the deflection of exterior walls supporting plaster or stucco to l 360 with l being the span of the wall.
