Spirelocation survey

A Spirelocation survey is the formal process undertaken to establish the definitive volumetric boundaries, geometric coordinates, and physical presence parameters of a Moss-Growth Spire within the Tower. It is the application of the Moss-Growth Spirelocation methodology in the field, resulting in a legally admissible Register of Defined Space for the subject spire. Conducted under the authority of the Librarian Cartography sub-department, such surveys are mandatory for all newly emergent spires and for any spire involved in a spatial dispute, as per Fifth Concordance, Clause 19 (Annex Γ).

Prerequisites and Authorization

Authorization to initiate a survey must be obtained from the Overseer of Volumetrics via Petition Form γ-7A. A valid survey requires, at minimum, the following elements: a team of three certified Boundary Clerks, a current copy of the Standard Measurement Protocol (SMP-Δ), a copy of the most recent Census of the Whispering Stacks, and the primary spirelocation theodolite, calibrated against the local gravitational differential of the relevant Central Stack no more than forty-eight hours prior to commencement.

Standard Procedure (SMP-Δ)

The survey follows the five-stage SMP-Δ. Stage One: Pre-liminal Resonance. The Boundary Clerks establish a Quiet Perimeter and perform the Auditory Baseline Test as described in the Census of the Whispering Stacks, to account for any ambient spatial dissonance. Stage Two: Radial Measurement. Using the spirelocation theodolite, the team takes a minimum of twelve radial measurements from a fixed central datum point (usually the spire's nominal apex, as declared in the initial emergence report). Stage Three: Contour Verification. Measurements are cross-referenced against any pre-existing Conjectural Mapping for the area and the stable architectural features of the host floor (e.g., Stack walls, Interstitial Stairwells). Stage Four: Volumetric Calculation. The collected data is used to calculate the spire's precise volume, surface area, and its intersection coefficients with the Tower's permanent structure. Stage Five: Registry and Sealing. The findings are inscribed on a Parchment of Delineation, signed by all three Clerks, and sealed with the cartographer's sigil in the presence of a Witness of Empty Space.

Disputes and Incompletability

Discrepancies often arise between survey results and the Doctrine of Incompletability, particularly regarding spires deemed "partially realized." The landmark case of Spire Alpha-7 established that a survey may record a "Probability of Presence" gradient rather than a binary boundary. Furthermore, The Partial Survey explicitly allows for surveys to be filed as "Provisional" or "Conditionally Final," a loophole frequently cited in ongoing disputes between the Realized Absence Guild and the Keepers of Peripheral Geometry.

Historical Surveys and Precedents

Several major surveys serve as procedural benchmarks. The Seventh Spiral Survey of Floor 440 was the first to successfully apply SMP-Δ to a non-Euclidean spire cluster. The Petalline Survey is noted for its innovative—though later contested—use of floral growth patterns to infer sub-spire boundaries. The protracted Grand Spiral Survey of the Mid-Spire Complex (Floor 1022) remains officially incomplete, its team having filed seventeen consecutive "Provisional" updates over forty years, illustrating the practical challenges of the Doctrine of Incompletability.

Contradictions in Concordance

The legal foundation for spirelocation surveys is famously contradictory. While the Fifth Concordance mandates a survey for any spatial dispute, the Third Concordance, Amendment , states that "No measurement shall bind that which is not measurably bound." This has been interpreted by some scholars, such as Historiographer Lysander, to mean all surveys are inherently advisory, not definitive. This view is opposed by the Cartographer's Guild, which cites the Foundation of Survey Protocols as granting surveys the force of law within their calibrated margin of error (standardized at ±0.5%). The contradiction remains unresolved, requiring each survey team to cite the Concordance most favorable to their commissioning authority.