Pergola Beam Height Clearance

Audit measured pergola underside minus hanging canopy against caller passage-envelope height, retaining signed margins; no load-bearing, accessibility or worker/equipment safety certification.

Description

Hanging foliage reduces passage height beneath a pergola.

Hanging foliage reduces passage height beneath a pergola. A signed clearance margin separates observed space from a supplied passage envelope.

Audit measured pergola underside minus hanging canopy against caller passage-envelope height, retaining signed margins; no load-bearing, accessibility or worker/equipment safety certification.

When to use Pergola Beam Height Clearance

Use this tool to audit measured pergola underside minus hanging canopy against caller passage-envelope height, retaining signed margins; no load-bearing, accessibility or worker/equipment safety certification.

Prepare vineyard measurements, dates or block records for the intended growing period. Keep weights, counts and weather observations in the stated units.

How to use Pergola Beam Height Clearance and understand its results

Prepare vineyard measurements, dates or block records for the intended growing period. Keep weights, counts and weather observations in the stated units.
Enter measuredBeamUndersideHeightsM, hangingFoliageDepthsM, callerRequiredPassageHeightsM using the field table and calculation rules, then run the tool.
Read observedClearanceHeightsM, signedClearanceMarginsM, belowCallerPassageHeightFlags. The explanation below defines the units, signs, ordering and any flags or placeholder values.
If the tool reports an input issue, correct the values and run it again. Apply the stated assumptions when interpreting a successfully returned result.

Input field	Meaning	Value type; see rules below	Requirement
measuredBeamUndersideHeightsM	Measured beam underside heights m	list of number	Required
hangingFoliageDepthsM	Hanging foliage depths m	list of number	Required
callerRequiredPassageHeightsM	Caller required passage heights m	list of number	Required

Align nonnegative heights and depths. Reject hanging depth greater than underside height. Flag only negative margins; equality meets the caller height criterion.^[1]

Paired lists must be nonempty and have equal lengths.

clearance = beam underside − hanging depth; margin = clearance − required height

Units, indexing, boundary conditions and exceptional cases are defined in the calculation rules above.

Output field	Meaning	Value type
observedClearanceHeightsM	Observed clearance heights m	list of number
signedClearanceMarginsM	Signed clearance margins m	list of number
belowCallerPassageHeightFlags	Below caller passage height flags	list of number

json

{
  "input": {
    "measuredBeamUndersideHeightsM": [
      2,
      2.5
    ],
    "hangingFoliageDepthsM": [
      0.2,
      0.5
    ],
    "callerRequiredPassageHeightsM": [
      1.9,
      1.8
    ]
  },
  "output": {
    "observedClearanceHeightsM": [
      1.8,
      2
    ],
    "signedClearanceMarginsM": [
      -0.09999999999999987,
      0.19999999999999996
    ],
    "belowCallerPassageHeightFlags": [
      1,
      0
    ]
  }
}

Limitations and assumptions

No structural, accessibility or worker-safety certification is made.

Numbers and computed results must be finite; overflow produces an error. Numeric lists are limited to 100,000 entries; the rules above may require smaller limits. Missing required fields, extra fields, wrong value types and violations of the calculation rules are input errors.

Alternative or Complementary methods

Use Lyre System Row Width Opening: Evaluate symmetric Lyre curtain center geometry and declared horizontal foliage thickness before reporting clear top gap; not trellis engineering, arbitrary row width or canopy illumination guarantee. For a complementary task, use Canopy Height Shoot Length Checker: Project measured upright shoot lengths/inclinations from actual basal heights against caller canopy envelope, not raw length-only comparison or a hedging recommendation.

References

Pergola Beam Height Clearance — tool.io

Similar or alternative tools

Lyre System Row Width Opening
Evaluate symmetric Lyre curtain center geometry and declared horizontal foliage thickness before reporting clear top gap; not trellis engineering, arbitrary row width or canopy illumination guarantee.
Canopy Height Shoot Length Checker
Project measured upright shoot lengths/inclinations from actual basal heights against caller canopy envelope, not raw length-only comparison or a hedging recommendation.