Spec preliminaries are required to tie the documented builder's work together. 

Some prelim items are easy to document, but some can be difficult and, when done poorly, can lead to on-site confusion and misinterpretation. These ‘pesky preliminaries’ commonly include provisional allowances, owner supplied items, nominated subcontractors, work by others, and authority approvals. Provisional Allowances Provisional allowances include prime costs and provisional…