So what is DD Form 1209? The short answer: a Defense Department document, officially DD Form 1209, Liquid- and Plastic-Limits Determination, December 1999, used to Liquid- and Plastic-Limits Determination. Anything else you need follows from that.
Is there a version specific to your service? No. A DD number is issued at Department level, which is the whole point of the prefix — every military department and defense agency works from one identical document. Looking for a branch variant wastes time you do not have.
Who decides this form exists? not stated owns it; not stated directs its use. If someone told you to file this, the authority traces back to those.
Which edition should you have? not stated, listed as not stated. A copy dated otherwise is a copy worth replacing.
What the form asks for
- 1. Project.
- 2. Date.
- 3. Excavation number.
- 4. Job number.
- 5. Sample number.
- Number of blows, column 1.
- Number of blows, column 2.
- Number of blows, column 3.
- Number of blows, column 4.
- Number of blows, column 5.
- Number of blows, column 6.
- 6. Liquid limit (LL). Run number, column 1.
- Tare number, column 1.
- a. Weight of wet soil + tare, column 1.
- b. Weight of dry soil + tare, column 1.
- c. Weight of water (Ww = a - b), column 1.
- d. Weight of tare, column 1.
- e. Weight of dry soil (Ws = b - d), column 1.
- Water content (w = Ww / Ws x 100), column 1.
- Run number, column 2.
- Tare number, column 2.
- a. Weight of wet soil + tare, column 2.
- b. Weight of dry soil + tare, column 2.
- c. Weight of water (Ww = a - b), column 2.
Download the form
What formats exist for this form? PDF. What is the scale of it? 1 pages and approximately 117 fields.
Is there a charge? No — free, all formats. Where should you open the file? In a full pdf application on your own machine. Browser-embedded viewers handle field properties unpredictably.
Where do you start? At the top. Identification first, the substance of the entry second, certification last. Why that order? Because fields lower on the page often depend on data you established in the header, and filling out of sequence produces contradictions.
What if your copy is old? Replace it. Check the date printed on the form against not stated. Old blanks circulate for years in shared folders, and because a DD revision lands across the whole Department at once, the receiving office will be working from the new layout.
Which fields are required? Treat all of them as required, marking N/A where an item genuinely does not apply. What trips people on dates? Writing them in a familiar format instead of the one the form specifies.
What is the Privacy Act Statement doing on the form? Telling you, before you supply personal identifiers, under what authority the information is collected, what it will be used for, who else may see it, and whether answering is voluntary or mandatory. Is it worth reading? It is the only part of the form written for your benefit rather than the file's.
How do you sign electronically? With a digital signature, usually CAC-based, in a reader that handles it. Will typing your name work? Not as execution — it fills a field without certifying anything. Either way, the date goes in immediately after.
Which mistakes are worth a final check? Superseded edition, gaps in mandatory fields, unreadable writing on a scanned copy, non-conforming date format, unsigned or undated certification.
What if a specific field still puzzles you? Read the instructions printed on the form, then not stated. Which wins if they differ? The directive.
Where does the completed form go? To the office named in not stated or in your organization's local procedure. Should you keep a copy? Always — a scan or a saved file costs nothing and spares you the whole exercise if the original disappears.
Do you need to know which branch issued a related form? No. DD numbering is Department-wide and unified, which means the number on its own is a complete address for the document.
Why do some instructions cite both a DA and a DD form? Because the procedure touches both systems, not because the forms are related. Service forms answer to a service proponent; DD forms answer to not stated or another Department office. The sequences were never aligned.
How often does a form like this change? Unpredictably — revision follows directive changes, altered collection requirements and updated notice language. What is the practical defence? Verifying not stated every time you download rather than trusting a saved copy.
Is any of this advice? No. This page distributes a published Defense form and explains its contents, which is a different thing from telling you whether your circumstances qualify or whether a reviewer will accept your copy. Direct questions of eligibility, applicability and procedure to not stated, to your servicing personnel office, or to the office designated in not stated.
Questions and answers
- What is DD Form 1209?
- DD Form 1209, Liquid- and Plastic-Limits Determination, December 1999
- Which edition is current?
- Not stated by the publisher
- Who is responsible for this form?
- Not stated
- In which formats can it be downloaded?