I'm not sure I follow you, dik. I think generally only provisions specific to the project are spelled out in the contract. I believes items 4 through 8 on that list typically become part of the Contract, but if they are altered at the time of being incorporated into the Contract, then the version in the Contract supersedes the previous versions.
The plans will show placing crushed base in a particular location, but all of the material properties, gradations, etc. as well as directives of how to place it, compact it, etc. are in the Standard Specifications and the contractor has to follow that unless it's superseded by something contradictory in the plans or a special provision, such as a different gradation for the material. If the gradation in the spec book will do the job, then the plans don't mention the gradation, and since there's nothing saying otherwise, the contractor is required to use what's shown in the spec book.
The Contract Plans may show a particular type of guardrail to be installed at a particular location, and unless there's something unusual about it, the contractor will refer to the Standard Plans for all the details of how to build it, and the Standard Specifications for what materials to use for the various components.
Rod Smith, P.E., The artist formerly known as HotRod10