- #Higher type mix base widening asphalt iowa dot manuals
- #Higher type mix base widening asphalt iowa dot pdf
- #Higher type mix base widening asphalt iowa dot manual
Reclaimed asphalt pavement ( RAP) is generally considered a material within HMA, while forms of in-place recycling are considered separately. Typically agencies consider other types of asphalt-based pavement surfaces such as fog seals, slurry seals and BSTs to be maintenance treatments and are therefore covered in the Maintenance & Rehabilitation section. HMA is distinguished by its design and production methods (as described in this Guide) and includes traditional dense-graded mixes as well as stone matrix asphalt (SMA) and various open-graded HMAs. For clarity, this Guide makes a conscious effort to consistently refer to this material as HMA. Hot mix asphalt is known by many different names such as hot mix, asphalt concrete (AC or ACP), asphalt, blacktop or bitumen.
#Higher type mix base widening asphalt iowa dot manuals
If you need to modify the SUDAS manuals to meet your jurisdiction’s needs, please read this document first.The most common type of flexible pavement surfacing in the U.S.
The SUDAS Specifications are also included on the Iowa DOT’s Electronic Reference Library (ERL).
#Higher type mix base widening asphalt iowa dot manual
These documents supersede the standard specifications and take precedence as the work is pursued.īe sure to check the General Supplemental Specifications page to see if any changes to the Specifications Manual have been approved by the SUDAS Board of Directors. If specific testing processes are required, they may be included within the execution requirements or as a separate section within the division.īefore compiling their bids, it is critical for contractors to check the special provisions for each contract and also any supplemental specifications that the contracting authority may have that modify the standard specifications. In addition, figures are included to further clarify construction or product requirements. The construction activities are tailored to the specific products used. If the engineer does not specify which products can or cannot be used, the contractor may select from the included products to incorporate into the project.Ĭonstruction requirements are included in the third part of each division, called execution. The second part of each division lists a menu of acceptable products to be used to accomplish the project. It also lists what work activities are included in each bid item and how each item will be measured and paid for. The first part, general, provides a description of the type of work, as well as any specific requirements of the project. The Specifications Manual is set up in a consistent three-part format. The initial division includes the specific bidding requirements, legal requirements related to public contracts in Iowa, and contractual requirements that must be met to successfully complete the project. These standard specifications were developed with the involvement of engineers and construction industry representatives from across the state. The engineer provides specific requirements through the specifications for the contractor to complete the project. The SUDAS Standard Specifications Manual is written to the contractor.
#Higher type mix base widening asphalt iowa dot pdf
Click here for a PDF containing all of the SUDAS Specifications figures. Previous editions of the SUDAS Standard Specifications can be found here.Ĭlick here for a complete list of the SUDAS Specifications figures.
When the SUDAS Board of Directors approves changes to the SUDAS Standard Specifications, those changes can be found on the General Supplemental Specifications page. The SUDAS manuals are revised once a year, usually in December. The current version of the SUDAS Standard Specifications is the 2023 Edition
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