• Welcome to The Building Code Forum

    Your premier resource for building code knowledge.

    This forum remains free to the public thanks to the generous support of our Sawhorse Members and Corporate Sponsors. Their contributions help keep this community thriving and accessible.

    Want enhanced access to expert discussions and exclusive features? Learn more about the benefits here.

    Ready to upgrade? Log in and upgrade now.

Protection of bearing plates in precast construction?

RLGA

SAWHORSE
Staff member
Joined
Oct 18, 2009
Messages
3,581
Location
Phoenix, AZ
I have a client who has brought to me an issue they have encountered regarding a parking garage.The parking structure is of Type I construction per Section 406 (2006 IBC) based on allowable area. The precast manufacturer has stated that the precast components (columns, girders, and tees) have at least the required 2-hour fire-resistive protection. However, this is not the issue.The city plans examiner is requiring that the welds and exposed portions of the bearing plates be protected by a fireproof coating. The construction uses corbels in the precast components for other components to bear on (see partial detail). The bearing plates serve little use in the support of vertical (i.e. gravity) loads.What do you think?View attachment 1213

View attachment 1654

View attachment 1654

/monthly_2012_02/572953e5658e2_GarageJoint.jpg.d2488741757bc4a57039e16c5246ea39.jpg
 
City plans examiner is a jackass.

Lateral forces are transferred at the diaphragm (i.e. the topping).

The bearing plates allow for movement due to changes in temperature, humidity, and loading and thereby prevent the creation of stresses between members.

Steel is used to provide a uniform, durable surface which will not chip when members are erected and shimmed.
 
Back
Top