Use the span tables below to determine allowable lengths of joists and rafters based on size and standard design loads.
Timber floor joist span tables nz.
64 3 543 8800 f.
The introduction of nzs 3604 in 1978 saw the requirements for bearer and joist size span and spacing clearly specified.
Simplified span tables for southern pine lumber and glued laminated timber glulam headers beams and girders.
Residential span tables available refer brochures below.
As1720 1 2010 timber structures design methods.
Lib88s rafters span tables the lumberworx i beam is light which aides in installation.
View joist rafter tables.
You can also use the wood beam calculator from the american wood council website to determine maximum rafter and joist lengths.
Characteristic properties are determined in accordance with as nzs 4063 2 2010 and so comply with the provisions of the new zealand building code through clause 2 3 for engineering design in accordance with nzs3603 1993 timber structures standard.
Listed are 46 tables based on common loading conditions for floor joists ceiling joists and rafters.
All technical information and span tables in this guide are in accordance with the product specific design properties.
Apa performance rated i joists pris are manufactured in accordance with pri 400 performance standard for apa ews i joists form x720 this performance standard provides an easy to use table of allowable spans for applications in residential floor construction allowing designers and builders to select and use i joists from various member manufacturers using just one set of span.
The hyjoist range consists of nz made engineered i joists that are a cost effective solution for floor joists rafters and purlins in both residential and commercial construction.
New zealand po box 3049 richmond nelson 7050 t.
Subject to design considerations.
These span tables are only for use in conjunction with taranakipinetm timber products.
These span tables have been developed in good faith with the assistance of mr peter falvey b e m i e aust c p eng r p e q 579 in accordance with the relevant australian standards however please check for state and local government variations.
View size selection tables.
Lib88s floor joist span tables the lumberworx i beam is perfect for use as a floor joist due to its ability to have service penetrations and strength.
64 3 543 8890 e.
Lvl nelsonpine co nz www nelsonpine co nz nelsonpine lvl11 floor joists 100x45 floor joists supporting floor loads only 40kg m2 joint spacing 300 450 600 span o h span o h span o h dxb maximum single span 100x45 2300 550 1850 500 1750 400 maximum.
View allowable load tables.
