<p>A unified and consistent design procedure is proposed for column base anchorages loaded in shear and tension. A literature review of previous work was done to identify discrepancies. A design procedure for anchorages loaded in shear, tension and combined shear and tension was developed which attempted to coordinate c;lnd resolve the discrepancies in previous work. A design methodology utilizing shear lugs was developed. The overall design procedure is for column bases loaded in shear and tension and uses two design methods:</p> <p>Method 1: Headed anchor bolts are used to resist both shear and tension loads.</p> <p> Method 2: A shear lug welded to the bottom of the base plate resists shear loads and the headed anchor bolts resist only tension loads.</p> <p>The proposed design method differs form the design method used by Shipp and Haninger (Reference 23) as follows:</p> <p> 1. The proposed procedure incorporates both shear and tension design stress based on the ultimate strength of the anchor bolts times a reduction factor.</p> <p> 2. Separate capacity reduction factors are introduced for shear and tension.</p> <p> 3. The use of shear lugs is incorporated in the proposed design.</p> <p> 4. The incorrect use of the "shear-friction" concept is noted and not used in the design.</p> <p> 5. The safety factor for the required embedment depth is applied to the projected area of the failure cone not the embedment depth of the bolt.</p> <p> Several design examples are presented using the two methods. A computer program (using Microsoft QuickBasic 4.0) has also been developed using the proposed design procedure.</p> / Master of Engineering