DIY Chatroom Home Improvement Forum

DIY Chatroom Home Improvement Forum (
-   Building & Construction (
-   -   Sister jointing (

Monello1 10-12-2012 08:24 PM

Sister jointing
Hi when you sister joint a broken beam with the same size wood and 4 ft in each direction from the crack and 3 nails every 12 inches does the beam become stronger? the same as it was before the original beam cracked? or weaker than if I would replace the whole beam


Daniel Holzman 10-12-2012 10:15 PM

If the crack is so severe as to render the original beam essentially failed, then partial sistering (which is what you describe) will restore a portion of the original strength of the beam prior to cracking. If the crack allows the beam to retain some strength, then it would require a careful detailed engineering analysis to answer your question.

joecaption 10-12-2012 10:17 PM

If it failed you need to first figure out why.

All times are GMT -5. The time now is 03:42 AM.

User Alert System provided by Advanced User Tagging (Pro) - vBulletin Mods & Addons Copyright © 2016 DragonByte Technologies Ltd.