The U.S. Department of Transportation Federal Highway Administration's Form FHWA 1622, known as the Worksheet for a Marshall Mix Design, is an essential document used in the planning and execution of federal lands highway projects. This comprehensive form serves a pivotal role in ensuring the quality and durability of asphalt mixtures, encompassing a wide range of details required for a successful Marshall Mix Design. It includes sections on project information, contractor details, and an extensive summary of the proposed job-mix-formula, covering aspects such as percent asphalt by mass, air voids, voids in mineral aggregate, and maximum specific gravity, among others. Furthermore, it delves into gradation target values, specific gravity, absorption allowable deviations, and trial results pertinent to the aggregate and asphalt binder utilized in the mix. Essential for maintaining standards, the form also requests information on the blend ratio of different stockpiles, aggregate properties like LA Abrasion and Sodium Sulfate Soundness, and results from moisture susceptibility tests to evaluate the mix’s performance under varied conditions. Designed to guide contractors and engineers alike, Form FHWA 1622 embodies the meticulous planning and evaluation needed to pave the way for enduring, high-quality roadways.
| Question | Answer |
|---|---|
| Form Name | Form Fhwa 1622 |
| Form Length | 5 pages |
| Fillable? | No |
| Fillable fields | 0 |
| Avg. time to fill out | 1 min 15 sec |
| Other names | aashto t245 download, aashto t245 pdf, AASHTO, Pbe |
