Soho House, Brighton(Application No: BH2015/02443)

Plant Noise Assessment (Units2-5)

Report 16/0276/R2

Brighton Seafront Regeneration Ltd
150 St Johns Street London EC1V 4UD
Revision	Description	Date	Prepared	Approved
0	1st Issue	16 May 2017	Josh Palmer	Philip Hankin

This report and associated surveys have been prepared and undertaken for the private and confidential use of our client only. If any third party whatsoever comes into possession of this report, they rely on it at their own risk and Cole Jarman Limited accepts no duty or responsibility (including in negligence) to any such third party.

Cole Jarman Limited Reg. in England and Wales No. 7102436 info@colejarman.com www.colejarman.com

Table of Contents

1 Introduction 4

2 Site Description 4

3 Environmental Noise Survey 5

3.1 Methodology 5

3.2 Results 6

4 Noise Emission Criteria 6

4.1 Planning Condition 8 6

4.2 Plant Noise Limit 7

5 Plant Noise Assessment 7

5.1 Proposed Installation 7

5.2 Assessment 7

5.3 Required Mitigation Measures 9

5.4 Results 9

6 Conclusions 10

Attachments

Glossary of Acoustic Terms 16/0276/TH1

Time history graph of noise survey results

16/0276/SCH1

Schedule of plant and associated noise levels

16/0276/SCH2

Schedule of silencers and required insertionlosses

16/0276/SPC1

Specification for in-duct silencers

2.2 We understand that the new plant may be requiredto run between 0600 and 0100 hours.

2.3 The site is shown within the context of the surrounding area in Figure 1 above. Marine Parade lies to the north and MadeiraDrive to the south. The nearest noise sensitive receptorsto the site are hotels and apartments on the north side of Marine Parade.These are shaded blue.

2.4 Beyond Madeira drive is Brighton Beach and, to the west, Brighton Pier. There are no other noise sensitivelocations to considersouth of the site.

3 Environmental Noise Survey

3.1 Methodology

3.1.1 An unattended noise survey was undertaken at one positionfor a period of 48 hours, commencing at approximately 1400 hours on Tuesday 7^th June.

3.1.2 Measurements were made at a single free-field position at the north boundaryof the site, approximately 8m from the kerb of Marine Parade.This position is labelled MP1 on Figure 1 above.

3.1.3 Measurements of the LAeq, LAmax and LA90 indices were recorded over consecutive 15 minuteperiods (see attached Glossary of AcousticTerms for an explanation of the noise units used).

3.1 Noise measurements were made using the equipmentlisted in table T1.

Item	Manufacturer	Type
Sound Level Analyser	Norsonic	140
Acoustic Calibrator	Norsonic	1251
Weatherproof windshield	Norsonic	1212

T1 Equipment used during unattended noise survey

3.1.4 The sound level analyser was calibrated before and after the noise survey to ensure a consistent and acceptable level of accuracy was maintained throughout. No significant drift was noted to have occurred.

3.1.5 The weather conditions while setting up and collectingthe survey equipmentwere warm and dry with a gentle breeze; suitable for the measurements. Based on online weather history data, these conditions are not believedto have varied significantly during the survey.

3.2 Results

3.2.1 The results of the noise measurements at MP1 are presented in the attachedtime history figure 16/0276/TH1.

3.2.2 While on site, the noise climate was dominatedby traffic on Madeira Drive.

3.2.3 The lowestbackground noise level measured duringthe hours duringwhich the plant may run (0600-0100) was LA90,15min 46 dB.

4 Noise Emission Criteria

4.1 Planning Condition8

4.1.1 The site location falls in the area of Brighton & Hove City Council. They have granted permission for the redevelopment (application no: BH2015/02443), subject to conditions. Planningcondition 8 relates to noise emissions from new mechanicalservices plant and reads as follows:

Prior to the installation of plant into the development, an acoustic report shall be submitted for approval to the Local Planning Authority. This must show that the cumulative ‘A’ weighted sound pressure level from the plant and machinery (includingnon-emergency auxiliary plant and generators), that will be incorporated into the development, when operating at its noisiest,shall not at any time exceed a value of 10 dB below the minimum externalbackground noise, at a point 1 metre outside any window of the nearest residential or other noise sensitive property,unless and until a fixed maximum noise level is approved by the City Council. The background level should be expressed in terms of the lowest LA90,15mins during the proposed hours of operation. The plant-specific noise level should be expressedas LAeq,T, and shall be representativeof the plant operating at its maximum.

Reason: To safeguard the amenities of the occupiersof neighbouring properties and to comply with policiesSU10 and QD27 of the Brighton & Hove Local Plan.

4.1.2 It should be noted that the requirements stipulated by this condition differ in certain ways from the guidancein BS 4142:2014, which is typically referenced when assessing noise emissionsfrom mechanical servicesplant.

4.1.3 The requirement to restrict plant noise to a level no greater than 10 dB below the minimumbackground level during the operatingperiod goes beyondthe intent of BS 4142:2014. The standard states that “wherethe rating level does not exceed the background sound level, this is an indication of the specific sound source having a low impact”.

4.1.4 Conversely, however, BS4142:2014 requires that plant noise is assessed on the basis of a rating level, which may include penaltiesfor various acousticfeatures, whereas PlanningCondition 8 refers to the combined A-weighted sound pressure level of all plant operatingat a given time. Therefore, in this case there is no need to add corrections for the characterof the plant noise.

4.1.5 Plant serving the east side of the development may also run between 0600 and 0100 hours, so noise emissionsfrom plant serving units 2-5 should be restricted to a level no greater than 13 dB below the minimumbackground level for this period.This is because equal apportionment of the maximum total permissible noise emissions from all new plant between the east and west sides of the development is achieved by setting the limit for each side at 3 dB below the overalllimit, while remainingwithin it when all plant operates together.

4.2 Plant NoiseLimit

4.2.1Based on the approach detailed in the previous section, the noise limit for the proposed mechanical servicesplant when allowedto run between 0600 and 0100 hours is 33 dB(A).

5 Plant Noise Assessment

5.1 ProposedInstallation

Cooling Plant

5.1.1 It is proposedto install four VRF air source heat pumps (VRF1, 2, 3 & 4) beside the east wall to unit 5 (the easternmost unit of the four considered here). This will be at low level and thereforeat least partially screened from nearby receptorsby surrounding buildings,a walkway throughthe middle of the site and Marine Parade to the north.

Ventilation Plant

5.1.2 A pair of extract fans (EF1 & 5) are proposed to draw air from toilets in units 2 and 5 out through high level grillesalong Marine Parade, at approximately street level.

5.1.3 A further four extract fans (EF2, 3, 4 & 6) are proposed to draw air from kitchen / food serving areas, one in each unit, also to grilles along Marine Parade.

5.1.4 Four supply fans (SF1, 2, 3 & 4), one per unit, are also to be ducted to grilles along Marine Parade.

5.1.5 Six heat recovery units (HRU1, 2, 3, 4, 5 & 6) are proposed,one each in units 2 and 4, and two in both unit 3 and unit 5. The extract and supply air handled by these unitswill be ducted to and from grillesin the southern elevation, facing Brighton Beach.

5.1.6 All ventilation plant is to be mounted internally and it is therefore only duct borne noise that may contribute significantly to the atmospheric emissionsrequiring assessment under planning condition8.

5.2 Assessment

5.2.1 An assessment has been conducted on the basis of the layout drawing by CD International Building ServicesEngineers (CDBSE), dated 19^th April 2017, and accompanying schedules of

5.2.6 Duct and grille dimensions are not currentlyavailable, due to the outline stage of the design. Conservative estimates,proportional to the size of each plant item, have therefore been made in calculating losses for bends, end reflections and grille directivities where appropriate.

5.2.7 A sample of calculations detailing the assessment are attached as Appendix B. A full set of calculation sheets detailing the assessment for each of the plant items can be provided on request.

5.3 Required MitigationMeasures

5.3.1 Atmospheric side silencersare required for the intakes of all supply fans and the exhausts of all extract fans ducted to the north side of the site. The silencers must meet the insertion losses shown in the attachedschedule 16/0276/SCH2.

5.3.2 Typical lengths and percentage free areas of silencer that would achieve these values are providedfor guidance only. The insertionlosses should be taken as the design criteria, and not the silencer length. Any proposed silencer should be confirmed to achieve the stated insertion losses as a minimum.

5.3.3 Rectangular splitter silencerswill be required to achievethe high insertionlosses required to sufficiently attenuatenoise from the exhaust side of each of the louder, in line single fan extractunits (EF2, 4 & 6). These fans extract air from kitchenhoods and the silencers should therefore be Melinex faced to facilitatecleaning.

5.3.4 We understand from the manufacturer’s data sheets that all other fans are likely to have circular ductwork and that cylindrical silencersmay be preferable.

5.3.5 All silencers should be suppliedand installed in accordance with the requirements of the attached specification 16/0276/SPC1. Silencer pressuredrops should be limited to no more than 40 Pascals.

5.4 Results

5.4.1 With the mitigation measures described in the previous section in place, the assessed plant noise levels are as follows:

Location	Plant Noise Emission Level, dB(A) (Limit)
	(0600-0100)
AP1 - New Madeira Hotel	30 (33)
AP3 – Amsterdam Hotel	33 (33)

T2 Calculated plant noise levels at assessment positions

5.4.2 It can be seen that the predictedplant noise levels at the assessment positionssatisfy the plantnoise emission criteriarequired by PlanningCondition 8.

5.4.3 A summary of the total octave band noise levels predicted at each assessmentposition, as well as the relative contributions from each assessedplant item are included here as Appendix C.

5.4.4 As explained in paragraph 4.1.5 above, by designingto the limits specified here allowance has also been made for equal levels of noise generated by plant serving the eastern area of the redevelopment, ensuring compliance with the overalllimit by all plant taken as a whole.

5.4.5 Suitable isolation measureswill need to be incorporated into the detailedplant design to prevent excessivelevels of structure-borne noise from being transmitted to other parts of the building.

6 Conclusions

6.1 It is proposed to open three new restaurants and a shop with café counter in units 2-5 of the Soho House development on Brighton’s seafront.New mechanical servicesplant is proposedto serve these units as well as another three units of the wider redevelopment site.

6.2 An unattended noise survey has been undertakenat the site to quantifythe existing noise climate and plant noise emissions limits proposed to meet the requirements stipulated by a planningcondition imposed by Brighton & Hove City Council.

6.3 An assessmentof the noise from the proposed plant items has been undertaken at the nearestnoise sensitive windows.The assessment has shown that the proposedemission limits can be met and silencersspecified to achieve this.

6.4 Headroom has been allowed for noise emissions from the plant equipment serving the otherhalf of the redevelopment, which is covered by the same planningcondition.

n End of Section

Glossary of AcousticTerms

LAeq:

The notional steady sound level (in dB) which over a stated period of time, would have the same A-weighted acousticenergy as the A-weighted fluctuating noise measurement over that period. Values are sometimeswritten using the alternative expression dB(A) Leq.

LAmax:

The maximum A-weighted sound pressure level recorded over the period stated. LAmaxissometimes used in assessingenvironmental noise when occasional loud noises occur, which may have little effect on the LAeq noise level. Unless described otherwise, LAmax is measuredusing the “fast” sound level meter response.

LA10 & LA90:

If non-steadynoise is to be described, it is necessaryto know both its level and degree of fluctuation. The LAn indicesare used for this purpose. The term refers to the A-weightedlevel (in dB) exceeded for n% of the time specified. LA10 is the level exceeded for 10% of the time and as such gives an indicationof the upper limit of fluctuating noise. Similarly, LA90 gives anindication of the lower levels of fluctuating noise. It is often used to define the background noise.

LA10 is commonly used to describe trafficnoise. Values of dB LAn are sometimes written using the alternative expression dB(A) Ln.

LAX, LAE or SEL

The singleevent noise exposurelevel which, when maintained for 1 second, contains the same quantity of sound energy as the actual time varying level of one noise event. LAX values forcontributing noise sources can be considered as individual buildingblocks in the construction of a calculated value of LAeq for the total noise. The LAX term can sometimesbe referred to as ExposureLevel (LAE) or Single Event Level (SEL).

n End of Section

Figure 16/0276/TH01

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Sound Level, dB

The Terraces, Maderia Drive, Brighton

		Source		63	125	250	500	1k	2k	4k	8k	dB(A)
VRF 1	VRF Unit 2	Man	Sound Power, Lw	72	63	60	55	48	44	38	33
VRF 2	VRF Unit 3	Man	Sound Power, Lw	72	63	60	55	48	44	38	33
VRF 3	VRF Unit 4	Man	Sound Power, Lw	72	63	60	55	48	44	38	33
VRF 4	VRF Unit 5	Man	Sound Power, Lw	72	63	60	55	48	44	38	33
HRU1-in	Heat Recovery Fan Intake	Man	Sound Power, Lw	79	71	71	60	60	58	50	41
HRU1-out	Heat Recovery Fan Discharge	Man	Sound Power, Lw	84	77	81	67	68	68	62	60
HRU2 & 3-in	Heat Recovery Fan Intake	Man	Sound Power, Lw	70	64	62	64	59	55	47	46
HRU2 & 3-out	Heat Recovery Fan Discharge	Man	Sound Power, Lw	76	77	71	74	65	65	63	64
HRU4-in	Heat Recovery Fan Intake	Man	Sound Power, Lw	79	71	71	60	60	58	50	41
HRU4-out	Heat Recovery Fan Discharge	Man	Sound Power, Lw	84	77	81	67	68	68	62	60
HRU5 & 6-in	Heat Recovery Fan Intake	Man	Sound Power, Lw	79	71	71	60	60	58	50	41
HRU5 & 6-out	Heat Recovery Fan Discharge	Man	Sound Power, Lw	84	77	81	67	68	68	62	60
EF1-out	Internal Duct Mounted Twinfan Outlet	Man	Sound Power, Lw	79	75	75	70	63	62	52	52
EF2-out	In Line Single Fan Outlet	Man	Sound Power, Lw	85	95	78	75	80	81	77	71

		Source		63	125	250	500	1k	2k	4k	8k	dB(A)
EF3-out	Internal Duct Mounted Twinfan Outlet	Man	Sound Power, Lw	73	69	65	65	60	55	51	45
EF4-out	In Line Single Fan Outlet	Man	Sound Power, Lw	85	95	78	75	80	81	77	71
EF5-out	Internal Duct Mounted Twinfan Outlet	Man	Sound Power, Lw	79	75	75	70	63	62	52	52
EF6-out	In Line Single Fan Outlet	Man	Sound Power, Lw	85	95	78	75	80	81	77	71
SF1-in	Supply Air Handling Unit Inlet	Man	Sound Power, Lw	76	70	63	52	52	52	47	38
SF2-in	Supply Air Handling Unit Inlet	Man	Sound Power, Lw	76	70	63	51	51	51	46	37
SF3-in	Supply Air Handling Unit Inlet	Man	Sound Power, Lw	76	70	63	52	52	52	47	38
SF4-in	Supply Air Handling Unit Inlet	Man	Sound Power, Lw	76	70	63	52	52	52	47	38

Notes

1 - Man refers to data suppliedby the equipment manufacturer or supplier, Emp refers to data calculatedusing empirical formulae,and Meas refers to data measured by Cole Jarman

Schedule of silencers and required insertionloss, dB ¹

Reference Location Silencer Type InsertionLosses (dB)

			63	125	250	500	1k	2k	4k	8k
AS1	EF2, 4 & 6-out	33% - 2400 (Melinex)	11	23	45	50	50	48	34	24
AS2	EF1, 3 & 5-out	2 Diameter 300mm (Podded)	3	8	14	22	31	28	20	19
AS3	SF1, 2, 3 & 4	1 Diameter 300mm (Podded)	1	5	7	14	19	16	13	12

Notes

1 - To be read in conjunction with silencer specification

Specification 16/0276/SPC1

Project:	Soho House, Brighton (Units 2-5)
Subject:	Acoustic specification of in-duct silencers
Date:	16 May 2017

1 General

1.1 Description

1.1.1 Furnish and install duct silencers of the types and sizes shown on the schedule.

1.1.2 Transitions and support or suspensionsystems are not included.

1.2 Quality Assurance

1.2.1 The dynamic insertion loss shall meet or exceed the values given in the schedules.

1.2.2 The static pressure drop shall not exceed 40 Pascals.

1.2.3 The levels of airflow noise generated by the silencersthemselves at the operating conditionsshall be providedby the supplier, if requested.

1.2.4 Performance data relating to dynamic insertion loss, static pressure drop and self-noise shall be obtainedin accordance with BS 4718:1971or BS EN ISO 7235 : 1996.

1.3 Submittals

1.3.1 Data sheets on the specific silencersutilised.

1.3.2 An itemised list showing the specific silencerutilised, its size, pressure drop at the required airflowvolume, certified test data on dynamic insertionloss and self-noise power levels.

2 Materials and Construction

2.1 Outer casings and interior construction

2.1.1 Outer casings of rectangular silencersshall be made of 18 gauge galvanized steel or thickerin accordance with the HVCA recommended construction for high pressure rectangular ductwork. Seams shall be lock formed and mastic sealed.

2.1.2 Interior partitions for rectangular silencersplitters shall be made of not less than 26 gauge galvanized perforated steel.

2.1.3 Interior construction of tubular silencersshall be compatible with the outside casings.

2.1.4 Splitters in rectangular silencers of length not less than 900mm shall have aerodynamically shaped leading and trailing edges. Square or blunt ends are not acceptable.

2.1.5 Silencers shall be fitted with drilled angle flange connections unless other forms of connection are specified by the Mechanical Services Consultant or Contractor.

2.2 Configuration

2.2.1 Splitters within the silencer should generally be aligned with half width splitters affixed to each side wall of the casing. Splittersshall preferably be aligned vertically, and there shall be a regular splitter/airway dimension across the full width of the silencer. Horizontal splitters, where this orientation is required, shall be suitablysupported and stiffenedto prevent sagging and restriction of the airways.It is of particular importancethat the supplier ensures that parallel splitterelements are orientatedto suit the aerodynamic conditions arising from the adjacent duct geometry, particularly in the vicinityof bends and other transitions.

2.2.2 For silencersmanufactured in modules,this specification shall apply to the unit as a whole.

2.2.3 The supplier shall comply with the cross-sectional sizes as shown in the schedule, unless alternative dimensions are agreed and approved by the MechanicalServices Contractor and the AcousticConsultant. Silencers which are constructed to alternative cross-sectional dimensions must achieve the dynamic insertion loss and pressuredrop requirements as set out in the schedule.

2.3 Standard silencers

2.3.1 Filler material shall be of inorganic mineralor glass fibreof a density sufficient to obtain the specified acoustic performance and be packed under not less than 5% compression to eliminate voids due to vibration and settling. Material shall be inert; rot, vermin and moisture proof;non-combustible and non-hygroscopic.

2.3.2 The filler material shall be retained in the splittersin such a manner that there is no egress of the fibres into the air stream at the prevailingflow conditions. Splitterswill normally be faced with perforated galvanisedsheet steel: any other facing material must be approvedby the Acoustic Consultant.

2.4 Silencers with non-porous fibre protection membrane

2.4.1Filler materialshall be of inorganic mineral or glass fibre of a density sufficient to obtain the specified acousticperformance and be packed under not less than 5% compression to eliminate voids due to vibration and settling. Materialshall be inert; rot, vermin and moisture

proof; non-combustible and non hygroscopic. Filler material shall be totallyencapsulated and sealed with Melinex film of a thicknessno less than 0.03mm.

2.5 Special silencers with no acousticalfill

2.5.1 No acoustic fill material:glass fibre, mineral wool, foam, etc., are not permitted.

2.5.2 Insertion loss provided by broadly tuned resonators and impedance membranes.

2.6 Special Operating Conditions

2.6.1 Where corrosive or toxic gases are containedin the air stream, specialconstructions and materialsmay be specified as an addendum to this specification.

2.6.2 Silencers which are expected to operate at high temperatures (e.g. turbine exhausts, boiler flues etc.) shall be constructed of a suitablegauge material, with precautions taken to allow for thermal expansion and shock. The filler material inside the splitters shall generally comply with the provisions outlined in Paragraph2.1.C, with modifications as required to accommodate the high operatingtemperature. For very high temperatures, steel wool or equivalent approvedmay be used as the filler material.

3 Execution

3.1 Silencer units shall be delivered to site with blocked ends to prevent the ingress of rubble prior to installation and to reduce the risk of damage. The silencer identification shall be clearly marked on the casing,as shall the direction of airflow.

3.2 The silencers shall be installed in accordance with the manufacturer's recommendations to obtain the published acoustic and air flow performance.

3.3 The silencers shall be located as shown in the drawings.

3.4 Orientate the internalsilencer splitters as follows for rectangular silencers:

· Silencer splitters be oriented so as to be parallel to the plane of the turn if the silencer is located in a position less than 3 duct diameters in distance from the elbow. The duct diameter shall be based upon the maximum duct cross sectionaldimension of the silencer.

· If the silenceris located greater than 3 duct diametersaway from an elbow, the orientation is not critical.

3.5 Locate no rectangular or circular silencers within one duct diameter from elbows, fan suction or discharge openings takeoffs, etc., unless indicated on the drawings and/or approved by the Acoustic Consultant.

4	Potential Product Suppliers
4.1	Allaway Acoustics	4.5	Noico Ltd
·	Contact: Jim Grieve	·	Telephone: 01256 766207
·	Telephone: 01992 550825	·	sales@noico.co.uk
· · · 4.2	enquiries@allawayacoustics.co.uk Address Old Police Station 1 Queens Road, Hertford, Hertfordshire, SG14 1EN www.allawayacoustics.co.uk Caice Acoustic Air Movement Ltd	· · 4.6 ·	Address Patrick House Station Road, Hook Hampshire, RG27 9HU www.noico.co.uk TEK Limited Contact: Paul Virgo
·	Telephone: 0118 9186470	·	Telephone: 0121 766 5005
·	enquiries@caice.co.uk	·	sales@tek.ltd.uk
·	Head Office Address Riverside House 3 Winnersh Fields Gazelle Close, Winnersh Wokingham, RG41 5QS	· ·	Address Seeleys Road, Greet Birmingham B11 2LQ www.tek-ltd.com

MIC

BAR

DISPENSE

SF1

EF2

SF2 EF3

EF4

SF3

HD HD

EF5

EF6

SF4

MECHANICAL

Supply Grille VRF Unit

UNIT 1

TAKEAWAY COUNTER

UNIT 2 -

FISH & CHIPS

HRU 1 RESTAURANT

UNIT 3 -

U RETAIL WITH CAFE COUNTER

HRU 3

UNIT 4 -

RESTAURANT WITH TAKEAWAY

HRU 4

UNIT 5 -

PIZZA RESTAURANT

VRF units located at Terracelevel

STORAGE UNDER UPPER LEVEL

# Issued for Information 05.05.2017

Rev Description / By / Chk'd / App'd Date Purpose of Issue

Information

VRF 1 to AP1

Octave Band Centre Frequency(Hz)

		63	125	250	500	1k	2k	4k	8k
Noise Source
Noise Source - VRF 1
Sound Power Levels		72.0	63.0	60.0	55.0	48.5	44.0	38.5	33.0
Point Source Radiation Loss
Radiation - Quarterspherical
		-5.0	-5.0	-5.0	-5.0	-5.0	-5.0	-5.0	-5.0
Point Source Distance Loss
End Distance (m)	50.0
		-34.0	-34.0	-34.0	-34.0	-34.0	-34.0	-34.0	-34.0
Facade Reflection
Reflection (dB)	3.0
		3.0	3.0	3.0	3.0	3.0	3.0	3.0	3.0
External Receiver
External Receiver - AP1
Sound Pressure, Lp		36.0	27.0	24.0	19.0	12.5	8.0	2.5	-3.0

HRU1-in to AP1

Octave Band Centre Frequency(Hz)

		63	125	250	500	1k	2k	4k	8k
Noise Source
Noise Source - HRU1-in
Sound Power Levels		79.0	71.0	71.0	60.0	60.0	58.0	50.0	41.0
Rect Unlined Duct Losses CJ
Width (mm)	270.0
Height (mm)	360.0
Length (m)	3.0
		-1.3	-1.8	-1.3	-0.9	-0.6	-0.6	-0.6	-0.5
End Reflection
Width/Diameter	0.3
Length	0.4
Rec or Circ - Rectangular
Free or Flush - Flush
		-11.6	-7.1	-2.6	0.0	0.0	0.0	0.0	0.0
External Grille Directivity
Width (m)	0.3
Height (m)	0.4
Vertical (°)	10.0
Horizontal (°)	125.0
		-0.5	-0.5	-1.5	-4.0	-8.5	-8.0	-8.0	-8.0
Point Source Radiation Loss
Radiation - Hemispherical
		-8.0	-8.0	-8.0	-8.0	-8.0	-8.0	-8.0	-8.0

Octave Band Centre Frequency(Hz)

		63	125	250	500	1k	2k	4k	8k
Point Source Distance Loss
Start Distance (m)	1.0
End Distance (m)	82.0
		-38.3	-38.3	-38.3	-38.3	-38.3	-38.3	-38.3	-38.3
Maekawa Screening Loss
Path Difference (m)	1.0
		-10.1	-12.4	-15.1	-17.9	-20.0	-20.0	-20.0	-20.0
Facade Reflection
Reflection (dB)	3.0
		3.0	3.0	3.0	3.0	3.0	3.0	3.0	3.0
External Receiver
External Receiver - AP1
Sound Pressure, Lp		12.1	5.9	7.2	-6.0	-12.4	-13.9	-21.9	-30.7

HRU1-out to AP1

Octave Band Centre Frequency(Hz)

		63	125	250	500	1k	2k	4k	8k
Noise Source
Noise Source - HRU1-out
Sound Power Levels		84.0	77.0	81.0	67.0	68.0	68.0	62.0	60.0
Rect Unlined Duct Losses CJ
Width (mm)	530.0
Height (mm)	360.0
Length (m)	3.0
		-2.2	-1.8	-0.9	-0.5	-0.5	-0.5	-0.5	-0.5
End Reflection
Width/Diameter	0.5
Length	0.4
Rec or Circ - Rectangular
Free or Flush - Flush
		-9.4	-4.9	-0.4	0.0	0.0	0.0	0.0	0.0
External Grille Directivity
Width (m)	0.5
Height (m)	0.4
Vertical (°)	10.0
Horizontal (°)	125.0
		-0.5	-0.5	-1.5	-4.0	-8.5	-8.0	-8.0	-8.0
Point Source Radiation Loss
Radiation - Hemispherical
		-8.0	-8.0	-8.0	-8.0	-8.0	-8.0	-8.0	-8.0

Octave Band Centre Frequency(Hz)

		63	125	250	500	1k	2k	4k	8k
Point Source Distance Loss
Start Distance (m)	1.0
End Distance (m)	82.0
		-38.3	-38.3	-38.3	-38.3	-38.3	-38.3	-38.3	-38.3
Maekawa Screening Loss
Path Difference (m)	1.0
		-10.1	-12.4	-15.1	-17.9	-20.0	-20.0	-20.0	-20.0
Facade Reflection
Reflection (dB)	3.0
		3.0	3.0	3.0	3.0	3.0	3.0	3.0	3.0
External Receiver
External Receiver - AP1
Sound Pressure, Lp		18.4	14.1	19.8	1.4	-4.2	-3.7	-9.7	-11.7

EF1-out to AP1

Octave Band Centre Frequency(Hz)

		63	125	250	500	1k	2k	4k	8k
Noise Source
Noise Source - EF1-out
Sound Power Levels		79.0	75.0	75.0	70.0	63.0	62.0	52.0	52.0
Silencer
Silencer - AS2
		-3.0	-8.0	-14.0	-22.0	-31.0	-28.0	-20.0	-19.0
*Circular* *Unlined Duct Losses CJ*
Diameter (mm)	250.0
Length (m)	2.0
		-0.1	-0.2	-0.2	-0.3	-0.4	-0.4	-0.4	-0.4
End Reflection
Width/Diameter	0.2
Length	0.2
Rec or Circ - Circular
Free or Flush - Flush
		-13.7	-9.3	-4.7	-0.2	0.0	0.0	0.0	0.0
External Grille Directivity
Width (m)	0.2
Height (m)	0.2
Vertical (°)	10.0
Horizontal (°)	70.0
		0.5	1.0	1.5	1.5	2.0	1.5	1.5	1.5
Point Source Radiation Loss
Radiation - Quarterspherical
		-5.0	-5.0	-5.0	-5.0	-5.0	-5.0	-5.0	-5.0

Octave Band Centre Frequency(Hz)

		63	125	250	500	1k	2k	4k	8k
Point Source Distance Loss
Start Distance (m)	1.0
End Distance (m)	78.0
		-37.8	-37.8	-37.8	-37.8	-37.8	-37.8	-37.8	-37.8
Facade Reflection
Reflection (dB)	3.0
		3.0	3.0	3.0	3.0	3.0	3.0	3.0	3.0
External Receiver
External Receiver - AP1
Sound Pressure, Lp		22.8	18.7	17.7	9.2	-6.2	-4.7	-6.7	-5.7

EF2-out to AP1

Octave Band Centre Frequency(Hz)

		63	125	250	500	1k	2k	4k	8k
Noise Source
Noise Source - EF2-out
Sound Power Levels		85.0	95.0	78.0	75.0	80.0	81.0	77.0	71.0
Silencer
Silencer - AS1
		-11.0	-23.0	-45.0	-50.0	-50.0	-48.0	-34.0	-24.0
Rect Unlined Duct Losses CJ
Width (mm)	750.0
Height (mm)	650.0
Length (m)	7.0
		-5.2	-4.2	-2.1	-1.1	-1.1	-1.1	-1.0	-1.0
End Reflection
Width/Diameter	0.8
Length	0.6
Rec or Circ - Rectangular
Free or Flush - Flush
		-6.4	-1.9	0.0	0.0	0.0	0.0	0.0	0.0
External Grille Directivity
Width (m)	0.8
Height (m)	0.6
Vertical (°)	10.0
Horizontal (°)	70.0
		0.5	1.0	1.5	1.5	2.0	1.5	1.5	1.5

Octave Band Centre Frequency(Hz)

		63	125	250	500	1k	2k	4k	8k
Point Source Radiation Loss
Radiation - Quarterspherical
		-5.0	-5.0	-5.0	-5.0	-5.0	-5.0	-5.0	-5.0
Point Source Distance Loss
Start Distance (m)	1.0
End Distance (m)	70.0
		-36.9	-36.9	-36.9	-36.9	-36.9	-36.9	-36.9	-36.9
Facade Reflection
Reflection (dB)	3.0
		3.0	3.0	3.0	3.0	3.0	3.0	3.0	3.0
External Receiver
External Receiver - AP1
Sound Pressure, Lp		24.0	28.0	-6.5	-13.4	-7.9	-5.4	4.6	8.6

SF1-in to AP1

Octave Band Centre Frequency(Hz)

		63	125	250	500	1k	2k	4k	8k
Noise Source
Noise Source - SF1-in
Sound Power Levels		76.0	70.0	63.0	52.0	52.0	52.0	47.0	38.0
Silencer
Silencer - AS3
		-1.0	-5.0	-7.0	-14.0	-19.0	-16.0	-13.0	-12.0
*Circular* *Unlined Duct Losses CJ*
Diameter (mm)	400.0
Length (m)	9.0
		-0.5	-0.5	-0.5	-0.9	-1.4	-1.4	-1.4	-1.4
End Reflection
Width/Diameter	0.4
Length	0.4
Rec or Circ - Circular
Free or Flush - Flush
		-10.7	-6.2	-1.7	0.0	0.0	0.0	0.0	0.0
External Grille Directivity
Width (m)	0.4
Height (m)	0.4
Vertical (°)	10.0
Horizontal (°)	70.0
		0.5	1.0	1.5	1.5	2.0	1.5	1.5	1.5
Point Source Radiation Loss
Radiation - Quarterspherical
		-5.0	-5.0	-5.0	-5.0	-5.0	-5.0	-5.0	-5.0

16/0276/R2 Appendix B

Octave Band Centre Frequency(Hz)

		63	125	250	500	1k	2k	4k	8k
Point Source Distance Loss
Start Distance (m)	1.0
End Distance (m)	75.0
		-37.5	-37.5	-37.5	-37.5	-37.5	-37.5	-37.5	-37.5
Facade Reflection
Reflection (dB)	3.0
		3.0	3.0	3.0	3.0	3.0	3.0	3.0	3.0
External Receiver
External Receiver - AP1
Sound Pressure, Lp		24.8	19.8	15.8	-0.9	-5.8	-3.3	-5.3	-13.3

Reference Noise Levels (dB)

	63	125	250	500	1k	2k	4k	8k	dB(A)
VRF 1	36	27	24	19	13	8	3	-3
VRF 2	36	27	24	19	13	8	3	-3
VRF 3	36	27	24	19	13	8	3	-3
VRF 4	36	27	24	19	13	8	3	-3
HRU1-in	12	6	7	-6	-12	-14	-22	-31
HRU2 & 3-in	6	2	1	2	-9	-13	-21	-22
HRU2 & 3-out	14	17	12	12	-3	-3	-5	-4
HRU4-in	14	7	8	-7	-10	-12	-20	-28
HRU5 & 6-in	18	12	12	-3	-6	-8	-16	-25
HRU5 & 6-out	21	16	21	1	-1	-1	-7	-9
HRU4-out	20	15	21	1	-2	-1	-7	-9
HRU1-out	18	14	20	1	-4	-4	-10	-12
EF1-out	23	19	18	9	-6	-5	-7	-6
EF2-out	24	28	-6	-13	-8	-5	5	9
EF3-out	21	16	11	6	-8	-10	-6	-11
EF4-out	28	31	-3	-11	-5	-3	7	11

16/0276/R2 Appendix C

Reference Noise Levels (dB)

	63	125	250	500	1k	2k	4k	8k	dB(A)
EF5-out	27	24	23	14	-1	2	0	1
EF6-out	28	33	-2	-8	-2	2	12	16
SF1-in	25	20	16	-1	-6	-3	-5	-13
SF2-in	26	21	17	0	-5	-3	-5	-13
SF3-in	28	23	19	3	-2	0	-2	-10
SF4-in	32	27	23	7	2	6	4	-4

Reference Noise Levels (dB)

	63	125	250	500	1k	2k	4k	8k	dB(A)
VRF 1	30	21	18	13	7	2	-3	-9
VRF 2	30	21	18	13	7	2	-3	-9
VRF 3	30	21	18	13	7	2	-3	-9
VRF 4	30	21	18	13	7	2	-3	-9
HRU1-in	16	9	10	-5	-8	-10	-18	-27
HRU2 & 3-in	10	5	4	3	-6	-9	-17	-18
HRU2 & 3-out	18	20	15	13	0	1	-1	0
HRU4-in	15	9	9	-5	-9	-10	-18	-27
HRU5 & 6-in	19	12	13	-2	-6	-7	-15	-24
HRU5 & 6-out	21	16	22	2	-1	0	-6	-8
HRU4-out	22	17	22	2	0	0	-6	-8
HRU1-out	22	17	22	3	0	0	-6	-8
EF1-out	31	28	27	18	3	6	4	5
EF2-out	33	37	3	-4	2	6	16	20
EF3-out	28	24	20	15	2	1	5	0
EF4-out	38	42	6	-3	3	7	17	21

16/0276/R2 Appendix C

Reference Noise Levels (dB)

	63	125	250	500	1k	2k	4k	8k	dB(A)
EF5-out	30	26	25	17	1	4	2	3
EF6-out	31	35	1	-6	-1	3	13	17
SF1-in	34	29	26	9	4	8	6	-2
SF2-in	35	30	27	10	6	10	8	0
SF3-in	34	30	26	10	5	9	7	-1
SF4-in	30	26	22	6	1	5	3	-5

Cole Jarman Limited Reg. in England and Wales No. 7102436 info@colejarman.com www.colejarman.com

Head Office +44 (0)1932 829007 Manchester Office +44 (0)161 2093644

John Cree House, 24B High Street, Addlestone, Surrey, KT15 1TN Peter House,1 Oxford Street, Manchester, M1 5AN

1 Introduction

2 SiteDescription

3 Environmental Noise Survey

3.2 Results

4 Noise Emission Criteria

4.1 Planning Condition8

4.2 Plant NoiseLimit

5 Plant Noise Assessment

5.1 ProposedInstallation

5.2 Assessment

5.3 Required MitigationMeasures

5.4 Results

6 Conclusions