ELASTOMERIC BEARING DESIGN

(Based on IDOT Bridge Manual & ABD Memo 15.6)

Step 1: Determine Size and Type of Bearing

(A) Select the plate size based on the loading for Types I & II bearings.

Provide following design parameters :


(B) Find out the type of Bearing required.

Provide following design parameters :

Is this bridge located in Seismic Performance Zones 2, 3 or 4 ?

The previous assumption of Types I or II is not valid and it needs to be verified for Type III as follow:

Step 2: Get the Detailing Dimensions

Provide following design parameters :

Yield strength of Bearing plates (fy)

Is bearing stiffener present ?

Detailing Parameters

Elastomeric Bearing Details

Side Retainer Details