Retrofitting new openings in existing tilt-up wall
Retrofitting new openings in existing tilt-up wall
(OP)
We have a small project that involves retrofitting an existing tilt-up concrete wall building. The work includes cutting a few new door openings in the exterior precast walls. The kicker is that we have no drawings/design documents of the existing structure to reference for analysis purposes. Anyone have some tips on how to estimate the required reinforcing/steel channel frame installation?? I would prefer not to have to do a full-blown gravity/lateral force analysis of the entire building. Thanks for any suggestions.






RE: Retrofitting new openings in existing tilt-up wall
Without these data to substantiate your calculations, you will be taking a huge risk. If you feel there is need for a lateral analysis, do not hesitate to tell the owner right now.