The present invention relates to bulkheads and brackets for use a part of a bulkhead. The bulkhead includes an upstanding portion including a bracket-mounting end, a mitering portion including a bracket-engaging end, and a bracket including a seat cavity adapted to receive the bracket-engaging end of the mitering portion. The bracket is configured to orient the mitering portion at an acute angle with respect to the upstanding portion with the bracket-engaging end of the mitering portion adjacent the bracket-mounting end of the upstanding portion. Methods are also provided that comprise the steps of arranging a plurality of upstanding portions to define a casting area, pouring uncured precast material into the casting area, and curing the precast material to provide a panel with a mitered corner. In accordance with 37 CFR 1.72(b), the purpose of this abstract is to enable the United States Patent and Trademark Office and the public generally to determine quickly, from a cursory inspection, the nature and gist of the technical disclosure. The abstract will not be used for interpreting the scope of the claims.