environment.assessment.spain

Spanish noise regulation: the corrected level LKeq (Real Decreto 1367/2007).

Real Decreto 1367/2007 develops Ley 37/2003 del Ruido on acoustic zoning, quality objectives and emitter limit values. Its assessment chain is built on one index the ISO 1996 family does not define: the corrected equivalent continuous level $L_{\mathrm{Keq},T}=L_{\mathrm{Aeq},T}+K_{\mathrm{t}}+K_{\mathrm{f}}+K_{\mathrm{i}}$ (Annex I A.2 c), where the three corrections penalise emergent tonal components, low-frequency components and impulsive character. Each is 0, 3 or 6 dB and their sum is capped at 9 dB (Annex IV A.3.3).

Corrections (Annex IV A.3.3). The reference procedures are:

• Kt: unweighted one-third-octave analysis; for the band f holding the tone, $L_{\mathrm{t}}=L_f-L_s$ with Ls the arithmetic mean of the two adjacent band levels. Kt is 0/3/6 dB by the thresholds 8/12 dB (20 to 125 Hz), 5/8 dB (160 to 400 Hz) and 3/5 dB (500 Hz to 10 kHz); with several emergent tones the largest applies.
• Kf: $L_f=L_{\mathrm{Ceq},Ti}-L_{\mathrm{Aeq},Ti}$ (background-corrected), giving 0 dB for $L_f\le 10$, 3 dB for $10<L_f\le 15$ and 6 dB above.
• Ki: $L_{\mathrm{i}}=L_{\mathrm{AIeq},Ti}-L_{\mathrm{Aeq},Ti}$ (background-corrected), with the same 0/3/6 dB thresholds as Kf.

Relationship with the ISO 1996 procedures already in the library. They are relatives, not the same procedure, so this module implements the RD’s own variants rather than delegating:

• tonal_audibility / tonal_adjustment are the ISO 1996-2 Annex C engineering method: a critical-band audibility ΔLta mapped to a continuous Kt in 0 to 6 dB. The RD works on one-third-octave band differences and yields 0/3/6 dB only. tonal_seeking_survey is the closest relative (ISO 1996-2:2017 Annex K also splits the spectrum at 125/400 Hz), but it requires the band to exceed both neighbours by 15/8/5 dB and returns a boolean flag, whereas the RD compares against the mean of the neighbours with 8/5/3 dB thresholds and grades the result.
• impulsive_sound_adjustment is the ISO/PAS 1996-3 onset-rate method on a calibrated time signal. The RD’s Ki is the classic $L_{\mathrm{AIeq}}-L_{\mathrm{Aeq}}$ impulse-vs-fast difference read off a sound level meter.
• No ISO 1996 counterpart exists for Kf: the $L_{\mathrm{Ceq}}-L_{\mathrm{Aeq}}$ difference is specific to the RD.

Evaluation periods and integration. Day 07:00-19:00 (12 h), evening 19:00-23:00 (4 h) and night 23:00-07:00 (8 h) (Annex I A.1). A period whose emission varies is split into noise phases Ti of steady level, and the period level is the energy mean weighted by phase duration (Annex IV A.3.4.2 b):

$$L_{\mathrm{Keq},T}=10{\log }_{10}\left[(1/T)\sum _i{T}_i\cdot 10^{L_{\mathrm{Keq},Ti}/10}\right]$$

The result is rounded by adding 0.5 dB and taking the integer part. The long-term index LK,x is the energy mean of the daily LKeq,x over a year (Annex I A.2 d).

Limit tables. Annex II holds the acoustic quality objectives (Table A outdoor by area type, as amended by RD 1038/2012; Table B indoor by room; Table C vibration), Annex III the emitter immission limits (Table A1/A2 new road, rail and airport infrastructure; Table B1 port infrastructure and activities; Table B2 noise transmitted to acoustically adjacent premises).

Compliance. For activities and port infrastructure (Article 25.1 b) the limits are respected when no annual average LK,x exceeds the table value, no daily LKeq,x exceeds it by more than 3 dB and no measured LKeq,Ti exceeds it by more than 5 dB. For the inspection of an activity already in operation (Article 25.2) only the last two apply.

Auto-generated from the source docstrings by scripts/generate_api_docs.py (make api-docs). Do not edit by hand.

ACOUSTIC_AREA_TYPES

Constant (mappingproxy).

ACOUSTIC_AREA_TYPES = {'e': 'sanitary, educational and cultural land use requiring special protection', 'a': 'residential land use', 'd': 'tertiary land use other than type c', 'c': 'recreational and public-entertainment land use', 'b': 'industrial land use', 'f': 'general transport-infrastructure systems and public facilities'}

activity_limits

activity_limits(area_type: str) -> RegulationLimits

Outdoor immission limits for activities and ports (Annex III Table B1).

The LK,d/LK,e/LK,n an installation, establishment or activity (industrial, commercial, storage, sports, recreational or leisure) and port infrastructure must not exceed in the outdoor environment of the acoustic area they sit in (Article 24.1).

Parameters

Name	Description
area_type	Acoustic area type letter, or an alias.

Returns: The applicable RegulationLimits for the index LK,x.

Raises

Exception	When
ValueError	For an unknown area type.

ActivityAssessment

ActivityAssessment(
    periods: tuple[PeriodAssessment, ...],
    limits: RegulationLimits,
    new_activity: bool,
)

Compliance of an activity or port infrastructure (Article 25).

Attributes

Name	Description
periods	The per-period assessments, in day/evening/night order.
limits	The limit table row the assessment was made against.
new_activity	True when the activity is new in the sense of the regulation, so the annual criterion of Article 25.1 b i applies; for the inspection of an activity already in operation only the daily and phase criteria apply (Article 25.2).

ActivityAssessment.complies

property

Whether every period meets every evaluated criterion.

ActivityAssessment.plot()

ActivityAssessment.plot(
    ax: Axes | None = None,
    *,
    language: str = 'en',
    **kwargs: Any,
) -> Axes

Plot the per-period indices against their RD 1367/2007 limits.

ActivityAssessment.report()

ActivityAssessment.report(
    path: str,
    *,
    metadata: ReportMetadata | None = None,
    verbose: bool = False,
    language: str = 'es',
) -> str

Render a one-page noise inspection fiche (acta) to path.

The layout follows the Spanish municipal / accredited-laboratory noise inspection report: an identification header, the per-phase measurement table with the Kt/Kf/Ki corrections, the per-period assessment against the applicable limits and the boxed verdict.

Parameters

Name	Description
path	Destination path of the PDF file.
metadata	Optional ReportMetadata supplying the header and footer identity fields.
verbose	Add the per-phase duration and correction breakdown columns.
language	Fiche language: "es" (default, the language of the regulation) or "en".

Returns: The written path.

Raises

Exception	When
ImportError	If reportlab (or, for the figure, matplotlib) is not installed.

adjacent_premises_limits

adjacent_premises_limits(
    building_use: str,
    room_type: str,
) -> RegulationLimits

Limits on noise transmitted to adjacent premises (Annex III Table B2).

Two premises are acoustically adjacent when noise never travels between emitter and receiver through the outdoor environment (Article 24.3): the workshop on the ground floor and the flat above it are, the building across the street is not.

Parameters

Name	Description
building_use	"residential", "office" (alias "administrative"), "sanitary" or "educational".
room_type	"living", "bedrooms", "professional_offices", "offices", "classrooms" or "reading_rooms".

Returns: The applicable RegulationLimits for the index LK,x.

Raises

Exception	When
ValueError	For an unknown combination.

assess_activity

assess_activity(
    measurements: Mapping[str, Sequence[NoisePhase]],
    limits: RegulationLimits,
    *,
    long_term_levels: Mapping[str, float] | None = None,
    operating_days: int | None = None,
    year_days: int = 365,
    closed_level: float = 0.0,
    new_activity: bool = True,
    period_hours: Mapping[str, float] | None = None,
) -> ActivityAssessment

Assess an activity against the RD 1367/2007 limit values (Article 25).

For every evaluation period supplied the function integrates the noise phases into LKeq,x (Annex IV A.3.4.2 b), derives the annual LK,x when annual information is given, and checks the three criteria of Article 25.1 b: no annual LK,x above the table limit, no daily LKeq,x more than 3 dB above it, and no measured LKeq,Ti more than 5 dB above it. With new_activity=False only the last two apply (Article 25.2, the inspection of an activity in operation).

The annual index can be supplied directly through long_term_levels or derived from operating_days: the reported daily level then represents operating_days days of the year and closed_level the remaining year_days - operating_days.

Parameters

Name	Description
measurements	Noise phases keyed by evaluation period ("day", "evening", "night"). Periods that are absent are not assessed.
limits	The applicable limit row, from activity_limits or adjacent_premises_limits.
long_term_levels	Annual LK,x per period, in dB, when known.
operating_days	Number of days a year the activity operates; used to derive LK,x from the daily LKeq,x when long_term_levels is not given.
year_days	Days in the year considered (default 365).
closed_level	Level, in dB, representing a day on which the activity does not operate (default 0 dB, as in the Spanish worked literature).
new_activity	Whether the annual criterion applies.
period_hours	Period durations T, in hours, overriding RD1367_PERIOD_HOURS.

Returns: An ActivityAssessment.

Raises

Exception	When
ValueError	For an unknown period key, empty phase list, inconsistent durations, or invalid annual parameters.

corrected_level

corrected_level(
    laeq: float,
    *,
    kt: float = 0.0,
    kf: float = 0.0,
    ki: float = 0.0,
) -> float

Corrected equivalent continuous level LKeq,T (Annex I A.2 c).

$L_{\mathrm{Keq},T}=L_{\mathrm{Aeq},T}+K_{\mathrm{t}}+K_{\mathrm{f}}+K_{\mathrm{i}}$ with the sum of the corrections capped at 9 dB. Although it is derived from an A-weighted level, the index is expressed in dB by definition.

Parameters

Name	Description
laeq	A-weighted equivalent continuous level LAeq,T, in dB, already corrected for background noise.
kt	Tonal correction, in dB.
kf	Low-frequency correction, in dB.
ki	Impulsive correction, in dB.

Returns: LKeq,T in dB.

Raises

Exception	When
ValueError	If laeq is not finite or a correction is negative.

evaluation_period_level

evaluation_period_level(
    phases: Sequence[NoisePhase],
    *,
    hours: float | None = None,
) -> float

Evaluation-period level LKeq,T from its noise phases.

$L_{\mathrm{Keq},T}=10{\log }_{10}\left[(1/T){\sum }_i{T}_i\cdot 10^{L_{\mathrm{Keq},Ti}/10}\right]$ (Annex IV A.3.4.2 b): the duration-weighted energy mean of the phase levels. The returned value is not rounded; apply round_reported_level for the value the regulation asks to report.

Parameters

Name	Description
phases	The noise phases of the period.
hours	Total period duration T, in hours. None (default) uses the sum of the phase durations, as the regulation requires $\sum T_i=T$.

Returns: LKeq,T in dB.

Raises

Exception	When
ValueError	If phases is empty, hours is not positive, or the phase durations do not sum to hours.

impulsive_correction

impulsive_correction(laieq: float, laeq: float) -> float

Impulsive correction Ki (Annex IV A.3.3).

From the impulse- and fast-time-weighted equivalent levels of the same noise phase, both already corrected for background noise, $L_{\mathrm{i}}=L_{\mathrm{AIeq},Ti}-L_{\mathrm{Aeq},Ti}$ gives $K_{\mathrm{i}}=0$ for $L_{\mathrm{i}}\le 10$ dB, $K_{\mathrm{i}}=3$ for $10<L_{\mathrm{i}}\le 15$ dB and $K_{\mathrm{i}}=6$ above.

Note

This is the classic sound-level-meter route. The onset-rate method of impulsive_sound_adjustment (ISO/PAS 1996-3) is a different, signal-based procedure and its KI is not interchangeable with this Ki. The same misprint as in low_frequency_correction affects the 3 dB row of the printed table.

Parameters

Name	Description
laieq	Impulse-weighted equivalent level LAIeq,Ti, in dB.
laeq	A-weighted equivalent continuous level LAeq,Ti, in dB.

Returns: Ki in dB (0, 3 or 6).

Raises

Exception	When
ValueError	If either level is not finite.

indoor_quality_objectives

indoor_quality_objectives(
    building_use: str,
    room_type: str,
) -> RegulationLimits

Indoor acoustic quality objectives Ld/Le/Ln (Annex II Table B).

The objectives that the whole set of emitters reaching a habitable room must respect: dwellings and residential uses, hospitals, and educational or cultural buildings.

Parameters

Name	Description
building_use	"residential", "sanitary" (alias "hospital") or "educational".
room_type	"living" (living areas), "bedrooms", "classrooms" or "reading_rooms".

Returns: The applicable RegulationLimits for the index Lx.

Raises

Exception	When
ValueError	For an unknown combination.

infrastructure_limits

infrastructure_limits(area_type: str) -> RegulationLimits

Immission limits for new transport infrastructure (Annex III Table A1).

New road, rail and airport infrastructure must not transmit to the outdoor environment of an acoustic area levels above these Ld/Le/Ln values (Article 23.1).

Parameters

Name	Description
area_type	Acoustic area type letter, or an alias.

Returns: The applicable RegulationLimits for the index Lx.

Raises

Exception	When
ValueError	For an unknown area type.

long_term_corrected_level

long_term_corrected_level(
    daily_levels: Sequence[float] | np.ndarray,
    *,
    weights: Sequence[float] | np.ndarray | None = None,
) -> float

Long-term index LK,x from the daily period levels (Annex I A.2 d).

$L_{\mathrm{K},x}=10{\log }_{10}\left[(1/n){\sum }_{i}10^{L_{\mathrm{Keq},x,i}/10}\right]$: the energy mean of the daily corrected levels of the same evaluation period over a year. With weights the mean is weighted, which lets a whole block of identical days be entered once (e.g. 303 operating days at one level and 62 closed days at another).

Parameters

Name	Description
daily_levels	Daily LKeq,x values, in dB.
weights	Optional number of days each level represents (positive).

Returns: LK,x in dB, unrounded.

Raises

Exception	When
ValueError	If the input is empty, non-finite, or the weights do not match the levels or are not positive.

low_frequency_correction

low_frequency_correction(lceq: float, laeq: float) -> float

Low-frequency correction Kf (Annex IV A.3.3).

From the C- and A-weighted equivalent levels of the same noise phase, both already corrected for background noise, $L_f=L_{\mathrm{Ceq},Ti}-L_{\mathrm{Aeq},Ti}$ gives $K_{\mathrm{f}}=0$ for $L_f\le 10$ dB, $K_{\mathrm{f}}=3$ for $10<L_f\le 15$ dB and $K_{\mathrm{f}}=6$ above.

Note

The printed table reads “Si 10 >Lf <=15” for the 3 dB row, a misprint for $10<L_f\le 15$; the bracketing rows ($L_f\le 10$ and $L_f>15$) leave no other consistent reading. See docs/ERRATA.md.

Parameters

Name	Description
lceq	C-weighted equivalent continuous level LCeq,Ti, in dB.
laeq	A-weighted equivalent continuous level LAeq,Ti, in dB.

Returns: Kf in dB (0, 3 or 6).

Raises

Exception	When
ValueError	If either level is not finite.

max_infrastructure_limit

max_infrastructure_limit(area_type: str) -> float

Maximum LAmax for rail and airport infrastructure (Annex III Table A2).

The limit is respected when, over a year, 97 % of all daily values stay at or below it (Article 25.1 a iii).

Parameters

Name	Description
area_type	Acoustic area type letter, or an alias.

Returns: The LAmax limit, in dB.

Raises

Exception	When
ValueError	For an unknown area type.

NoisePhase

NoisePhase(
    hours: float,
    laeq: float,
    kt: float = 0.0,
    kf: float = 0.0,
    ki: float = 0.0,
    label: str | None = None,
)

A noise phase Ti of steady emission within an evaluation period.

RD 1367/2007 (Annex IV A.3.4.2 b) splits an evaluation period whose emission varies into phases in which the sound pressure level at the assessment point is perceived uniformly, measures LAeq,Ti over at least 5 s in each, and corrects it for tonal, low-frequency and impulsive character.

Attributes

Name	Description
hours	Duration Ti of the phase, in hours (positive).
laeq	Background-corrected LAeq,Ti, in dB. A phase in which the activity is shut down carries the level actually measured; the worked examples of the Spanish literature enter it as 0 dB.
kt	Tonal correction of the phase, in dB.
kf	Low-frequency correction of the phase, in dB.
ki	Impulsive correction of the phase, in dB.
label	Optional free-text description of the phase.

Raises

Exception	When
ValueError	If hours is not positive and finite, laeq is not finite, or a correction is negative.

NoisePhase.correction

property

Summed correction $K=K_{\mathrm{t}}+K_{\mathrm{f}}+K_{\mathrm{i}}$, capped at 9 dB.

NoisePhase.lkeq

property

The corrected level LKeq,Ti of the phase, in dB.

outdoor_quality_objectives

outdoor_quality_objectives(
    area_type: str,
    *,
    urbanisation: str = 'existing',
) -> RegulationLimits

Outdoor acoustic quality objectives Ld/Le/Ln (Annex II Table A).

The values are those of Table A as amended by RD 1038/2012. For an area urbanised after the regulation entered into force (24 October 2007) the objective is the same table reduced by 5 dB (Article 14.2); the same 5 dB reduction defines the objective of quiet areas (Article 14.4).

Area type "f" (general transport-infrastructure systems) carries no numeric objective: footnote (2) refers it to the adjoining areas.

Parameters

Name	Description
area_type	Acoustic area type: the letter "e", "a", "d", "c" or "b", or an alias such as "residential".
urbanisation	"existing" (default) for areas already urbanised on 24 October 2007, or "new" for the rest (5 dB stricter).

Returns: The applicable RegulationLimits for the index Lx.

Raises

Exception	When
ValueError	For an unknown area type or urbanisation state.

PeriodAssessment

PeriodAssessment(
    period: str,
    phases: tuple[NoisePhase, ...],
    duration_hours: float,
    evaluation_period_level: float,
    reported_level: int,
    long_term_corrected_level: float | None,
    reported_long_term: int | None,
    limit: float,
    max_phase_level: float,
    phase_pass: bool,
    daily_pass: bool,
    long_term_pass: bool | None,
)

The assessment of one evaluation period against its limit.

Attributes

Name	Description
period	"day", "evening" or "night".
phases	The noise phases the period was split into.
duration_hours	The period duration T, in hours.
evaluation_period_level	LKeq,x of the period, in dB, unrounded.
reported_level	LKeq,x rounded per Annex IV A.3.4.2.
long_term_corrected_level	Annual LK,x, in dB, unrounded, or None when no annual information was supplied.
reported_long_term	LK,x rounded, or None.
limit	The table limit of the period, in dB.
max_phase_level	The largest LKeq,Ti of the period, in dB.
phase_pass	Whether every LKeq,Ti stays within limit + 5 dB.
daily_pass	Whether LKeq,x stays within limit + 3 dB.
long_term_pass	Whether LK,x stays at or below limit, or None when the criterion was not evaluated.

PeriodAssessment.complies

property

Whether every evaluated criterion of this period is met.

PeriodAssessment.daily_limit

property

The daily limit limit + 3 dB (Article 25.1 b ii).

PeriodAssessment.phase_limit

property

The phase limit limit + 5 dB (Article 25.1 b iii).

RD1367_CORRECTION_VALUES

Constant (tuple).

RD1367_CORRECTION_VALUES = (0.0, 3.0, 6.0)

RD1367_EVALUATION_PERIODS

Constant (tuple).

RD1367_EVALUATION_PERIODS = ('day', 'evening', 'night')

RD1367_MAX_CORRECTION

Constant (float).

RD1367_MAX_CORRECTION = 9.0

RD1367_PERIOD_CLOCK_LIMITS

Constant (mappingproxy).

RD1367_PERIOD_CLOCK_LIMITS = {'day': (7, 19), 'evening': (19, 23), 'night': (23, 7)}

RD1367_PERIOD_HOURS

Constant (mappingproxy).

RD1367_PERIOD_HOURS = {'day': 12.0, 'evening': 4.0, 'night': 8.0}

RegulationLimits

RegulationLimits(
    day: float,
    evening: float,
    night: float,
    index: str,
    reference: str,
    description: str,
)

A day/evening/night limit triple read from RD 1367/2007.

Attributes

Name	Description
day	Limit of the day period, in dB.
evening	Limit of the evening period, in dB.
night	Limit of the night period, in dB.
index	Noise index the limits apply to (e.g. "LK,x", "Lx").
reference	The table the values were read from.
description	The row of that table, in plain words.

RegulationLimits.as_dict()

RegulationLimits.as_dict() -> dict[str, float]

The three limits keyed by evaluation period.

round_reported_level

round_reported_level(value: float) -> int

Round a level the way RD 1367/2007 prescribes (Annex IV A.3.4.2).

“El valor del nivel sonoro resultante se redondeará incrementándolo en 0,5 dB(A), tomando la parte entera como valor resultante”: add 0,5 dB and take the integer part. This is a half-up rounding towards +inf, which for a negative level differs from Python’s banker’s round.

Parameters

Name	Description
value	Sound level, in dB.

Returns: The rounded level, as an int.

Raises

Exception	When
ValueError	If value is not finite.

tonal_correction

tonal_correction(
    levels: Sequence[float] | np.ndarray,
    frequencies: Sequence[float] | np.ndarray,
) -> TonalCorrectionResult

Tonal correction Kt from a one-third-octave spectrum (Annex IV A.3.3).

The spectrum must be unweighted (no frequency weighting applied, as required by step a). For every interior band f the procedure forms $L_{\mathrm{t}}=L_f-L_s$ with Ls the arithmetic mean of the levels of the bands immediately above and below (step b), and reads Kt off the table of step c: with 20 Hz to 125 Hz bands $L_{\mathrm{t}}<8$ gives 0 dB, $8\le L_{\mathrm{t}}\le 12$ gives 3 dB and $L_{\mathrm{t}}>12$ gives 6 dB; the thresholds are 5/8 dB over 160 Hz to 400 Hz and 3/5 dB over 500 Hz to 10 kHz. With more than one emergent tone the largest Kt governs (step d).

Note

This is not the ISO 1996-2 tonal adjustment. The closest ISO relative is the Annex K survey method (tonal_seeking_survey), which compares the band against both neighbours with 15/8/5 dB thresholds and only flags prominence; the RD compares against their arithmetic mean with 8/5/3 dB thresholds and grades the result 0/3/6 dB.

Parameters

Name	Description
levels	Unweighted one-third-octave band levels, in dB.
frequencies	Band centre frequencies, in Hz, in ascending order (one per level).

Returns: A TonalCorrectionResult.

Raises

Exception	When
ValueError	If fewer than three bands are given, the shapes differ, the frequencies are not positive and strictly ascending, or any value is not finite.

TonalCorrectionResult

TonalCorrectionResult(
    frequencies: np.ndarray,
    levels: np.ndarray,
    differences: np.ndarray,
    band_corrections: np.ndarray,
    correction: float,
    governing_frequency: float | None,
)

Tonal correction Kt of RD 1367/2007 (Annex IV A.3.3).

Attributes

Name	Description
frequencies	One-third-octave band centre frequencies, in Hz.
levels	Unweighted band sound pressure levels, in dB.
differences	$L_{\mathrm{t}}=L_f-L_s$ per band, in dB, where Ls is the arithmetic mean of the two adjacent band levels. NaN for bands that cannot be evaluated (the two end bands, and bands outside the 20 Hz to 10 kHz range of the table).
band_corrections	The Kt each band would contribute, in dB (0, 3 or 6); NaN where differences is NaN.
correction	The governing Kt, in dB: the largest band contribution (Annex IV A.3.3 d), or 0 dB if no band qualifies.
governing_frequency	Centre frequency of the governing band, in Hz, or None when correction is 0 dB.

TonalCorrectionResult.plot()

TonalCorrectionResult.plot(
    ax: Axes | None = None,
    *,
    language: str = 'en',
    **kwargs: Any,
) -> Axes

Plot the band spectrum with the emergent-tone differences Lt.

total_correction

total_correction(kt: float = 0.0, kf: float = 0.0, ki: float = 0.0) -> float

Summed correction $K=K_{\mathrm{t}}+K_{\mathrm{f}}+K_{\mathrm{i}}$, capped at 9 dB (Annex IV A.3.3).

Each of the three tables of Annex IV A.3.3 grades its parameter 0, 3 or 6 dB, so any other value is rejected rather than silently accepted: a correction of, say, 4.5 dB is not a reading the regulation can produce.

Parameters

Name	Description
kt	Tonal correction, in dB (0, 3 or 6).
kf	Low-frequency correction, in dB (0, 3 or 6).
ki	Impulsive correction, in dB (0, 3 or 6).

Returns: The summed correction, in dB, never above RD1367_MAX_CORRECTION.

Raises

Exception	When
ValueError	If a correction is not one of 0, 3 or 6 dB.

vibration_quality_objective

vibration_quality_objective(building_use: str) -> float

Indoor vibration quality objective Law, in dB (Annex II Table C).

Parameters

Name	Description
building_use	"residential", "sanitary" (alias "hospital") or "educational".

Returns: The Law objective, in dB.

Raises

Exception	When
ValueError	For an unknown building use.