Every entry in the Defense records system exists because some decision needed a documented basis, and DD Form 1209 is one of those instruments: DD Form 1209, Liquid- and Plastic-Limits Determination, December 1999, created to Liquid- and Plastic-Limits Determination. The reason it carries a DD number rather than a service designation is structural — the Department maintains a single body of forms for matters that arise identically in every service, so that a record created in one component remains intelligible in another.
That decision has consequences you will notice. Because not stated prescribes the form for the Department as a whole, and not stated maintains it on the Department's behalf, the same blank passes between the Army, the Navy, the Air Force, the Marine Corps, the Space Force, the Coast Guard when operating under Defense jurisdiction, the defense agencies and the combatant commands without translation. A clerk in one component reads a record created in another and finds the fields where they expect them.
Current edition: not stated, status not stated. Understand why that date is worth attention here. When the Department reissues a form, the replacement takes effect across every component simultaneously, so an older copy is not merely locally out of date — it is out of date in every office that might receive it.
Work down the page in the printed order, and understand why the order exists. The identifying block establishes whose record this is and under what circumstances it arises. The body of the form then answers questions that are only meaningful once that context is fixed. The signature block comes last because a certification signed before the entries are complete certifies nothing.
Check the edition date before you type anything, against not stated. Old blanks accumulate in shared drives for years, and the cost of one is not obvious until a reviewer cannot find a field. Because DD forms are revised centrally and replaced across the Department in a single action, there is no component still tolerating the old layout as a local practice.
Every field takes an entry, N/A included. The reason is evidentiary rather than clerical: a completed record is supposed to show what was asked and what was answered, and blank space records neither. On dates, follow the format printed beside the field. Conventions vary between components, and a joint document is read by people who do not share your habits.
Understand what the Privacy Act Statement is doing on the page. It exists because collecting personal data from an individual triggers a duty to explain the collection: under what authority, for what purpose, to whom the information may routinely go, and whether you are obliged to answer. That explanation precedes the fields for the obvious reason — afterwards it is merely a notice, beforehand it is a basis for deciding.
What the signature block asks for is an act, not a text. Ink on a printed copy performs that act; a digital signature bound to your credential performs it electronically, CAC-based in most Defense systems. Typing your name performs nothing, since anyone with the file could type the same characters. Enter the date at the same moment: the certification is a statement about a point in time and needs one recorded.
The defects that return forms are the same ones year after year: a superseded edition, required fields left blank, handwriting that fails on reproduction, dates in a convention the form did not ask for, and certification without a signature or without a date. Where a specific field is genuinely unclear, the instructions printed on the form come first and not stated governs where the two do not agree.
Download the form
Formats available: PDF, across 1 pages and about 117 fields. That several formats coexist is a consequence of scale — the Department cannot standardize the software on every desk that needs this form, so it standardizes the document instead.
Fillable and printable are not two presentations of one file but two different objects. One holds your entries as structured data within the document; the other is a static picture meant to meet a pen. Since a DD form frequently moves outside the organization that created it, the durability of the entry matters more here than on a record that stays in one drawer. Typed text reproduces indefinitely; handwriting degrades at every copy.
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.
Route the executed form as not stated or local guidance directs, and retain a duplicate first. Cross-component routing is ordinary for DD forms, which is precisely why a personal copy earns its keep: the receiving office may belong to an organization you have no standing to query about a missing document.
Forms referenced inside this one are located by number alone, and that simplicity is a direct product of Department-level numbering. Because the DD sequence is maintained centrally and not duplicated by service, a number is a complete address: one number, one document, throughout the Defense establishment.
Where a service form is cited in the same instruction, the two numbering systems should not be read across. DA numbering belongs to the Army and is administered by an Army proponent; DD numbering belongs to the Department and is administered by not stated or an equivalent Department office. The systems developed separately and were never harmonized, so identical digits in each identify two documents with nothing in common. The prefix, not the number, tells you which system you are in.
Editions change for reasons that originate above the form itself. The prescribing directive is reissued and the form follows; the information the Department needs to collect changes and the fields change with it; the statutory notice language is amended and every form carrying that notice is republished. None of these events announces itself to the person who downloaded a copy last year, which is why confirming not stated at the moment of download is the only reliable check available to you.
The role of this page is narrow and worth stating plainly. It makes a published Defense form available and explains its structure. It does not advise, does not interpret policy for your circumstances, and cannot indicate how any office will treat a completed copy — those judgments rest with the authorities that own the process. Direct such questions to not stated, to the administrative office that services you, or to the authority named 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?