Dd Form 1206 – Fill Out and Use This PDF

Dd Form 1206 PDF Details

In the realm of geotechnical engineering and construction, the DD Form 1206 plays a critical role. This form, dedicated to Grain-Size Analysis through the Sieve Method, encompasses a comprehensive approach to evaluating soil samples. It begins by cataloging basic information such as the project name, date, job number, and excavation details, then delves deeper into the specifics of the sample under examination, including its number, original and post-wash weights. The form meticulously records data on the sieve process: sieve sizes, weights before and after sieving, cumulative percentages, and the weight retained or passed through each sieve. This yields an accurate depiction of the sample's grain size distribution. Such analysis is essential in assessing the suitability of soil for construction projects and in understanding its behavioral characteristics under various conditions. The form accounts for potential errors and wash losses, ensuring a thorough and precise evaluation. The involvement of multiple technicians in the filling, computing, and checking of this form underscores the importance of precision and reliability in the field's foundational data gathering efforts.

Key sections of the form

The form is divided into several distinct sections that capture both project-level and sample-level data:

• Project information: Project name, job number, date, and excavation depth are recorded at the top of the form.
• Sample data: Each sample receives a unique identifier, along with its original weight, weight after washing, and washing loss.
• Sieve analysis table: This section lists each sieve size in millimeters, the weight retained on each sieve, cumulative weight, and both the percentage retained and the percentage passing.
• Error calculation: Fields for error in grams and error as a percentage ensure quality control throughout the testing process.
• Particle size classification: Final fields capture the percentage of gravel, sand, and fines, along with decimal values used for further classification.
• Technician signatures: Separate signature blocks for the technician filling the form, the computing technician, and the checking technician ensure accountability at every step.

When and why this form is used

Geotechnical engineers, soil testing laboratories, and construction firms rely on this form when evaluating soil for foundation design, earthwork specifications, and pavement subgrade assessment. The sieve analysis it documents is one of the most fundamental tests in soil mechanics, required by standards such as ASTM D422 and AASHTO T88. Any project involving earthwork, drainage design, or soil classification is likely to require this type of analysis. Results feed directly into soil classification reports, compaction studies, and drainage design calculations, making accurate completion of every field a non-negotiable part of the workflow.

Related Department of Defense forms

If you work regularly with DoD and military forms, these related documents are also available on FormsPal:

• AF Form 1206 – the Air Force Nomination for Award form, which shares the same form number but serves a different branch and purpose
• DD Form 1351-2 – the Travel Voucher used for military travel reimbursement
• DD Form 2977 – the Deliberate Risk Assessment Worksheet for identifying and mitigating operational risk
• DD Form 1149 – the Requisition and Invoice/Shipping Document
• Job Safety Analysis Form – for documenting identified hazards in construction and field operations