Technical Report to support Assessment of Environmental Effects (City Rail Link Notice of Requirement): Built Heritage Assessment
APPENDIX A Built Heritage potentially affected by Vibration and Settlement
CRL / Built Heritage Technical Expert Report /Appendix A
Possible Vibration and Settlement Effects on Built Heritage The following is a list of Historic places that have been identified by Aurecon Structural Engineering as likely to be affected by the construction of the CRL in a slight or moderate way, using the building damage classification defined in table 7.2.1 of the Structural Engineer Technical Expert Report (below). This list is an edited version of an initial list of Historic Places that were identified as being located within 100 metres either side of the indicative centre-line of the proposed CRL route. All lists should remain key references until the specific construction methodology for the CRL is confirmed. Initial analysis identified 254 properties which, with the successive refinement to the limits of the vibration and settlement contours, have reduced to approximately 118 potentially affected properties (ref. Appendix E), of which around 50% are formally recognised historic places either as registered by HPT or scheduled by Auckland Council or noted on the CHI. Of these, just 55 properties have been found to be possibly affected; 20 being “slightmoderate”, the remainder having potentially “slight” risk. (ref. below) The nature of historic places could mean that even the slightest damage may have significant effect on their heritage value. We have therefore taken the conservative approach of including these for further detailed assessment during the subsequent stages. Table 7.2.1 Structural Engineer Technical Expert Report Category of Damage
Normal Degree of Severity
Description of Typical Damage
General Category
(Building Damage Classification after Burland (1995), and Mair et al (1996))
(after Burland - 1995)
0
Negligible
Hairline cracks
1
Very Slight
Fine cracks easily treated during normal redecoration. Perhaps isolated slight fracture in building. Cracks in exterior visible upon close inspection.
2
Slight
Cracks easily filled. Redecoration probably required. Several slight fractures inside building. Exterior cracks visible, some repainting may be required for weathertightness. Doors and windows may stick slightly.
3
Moderate
Cracks may require cutting out and patching. Recurrent cracks can be masked by suitable linings. Brick pointing and possible replacement of a small amount of exterior brickwork may be required. Doors and windows sticking. Utility services may be interrupted. Weather tightness often impaired
4
Severe
Extensive repair involving removal and replacement of walls especially over door and windows required. Window and door frames distorted. Floor slopes noticeably. Walls lean or bulge noticeably. Some loss of bearing in beams. Utility services disrupted.
5
Very Severe
Major repair required involving partial or complete reconstruction. Beams lose bearing walls lean badly and required shoring. Windows broken by distortion. Danger of instability.
Aesthetic Damage
Serviceability Damage
Stability Damage
Summary: Description
Properties Identified
Built Heritage in Study Area Broad analysis included within the initial site area - 200m corridor (100m either side of the indicative centre line of the CRL (ref 2.4)
238 properties identified within the initial study area (ref Appendix C & D)
Built Heritage within Vibration and Settlement Corridors 110 properties within With the successive refinement to the limits of the vibration and settlement vibration and settlement contours (ref Appendix B) contours Potential Affected Heritage Properties Formally recognised historic places either as registered by HPT or scheduled by Auckland Council or noted on the CHI. The remainder have been categorised depending on whether they are seen as Potentially Historic, ‘Character Defining’ or ‘Character Supporting’ by site survey and desk top analysis.
Around 53 of these are identified in the Built Heritage Technical Report as having recognised heritage value. (below)
We have categorised the buildings and structures that fall within the area of this study into three classes: Type A: are those buildings, structures and areas that are identified in statutory lists such as the former Auckland City Council “Schedule of buildings, heritage properties, places, monuments and objects of special value and those subject to heritage orders”, the Historic Places Trust Register and the former Auckland Regional Council Cultural Heritage Inventory. Type B: are those buildings, structures and areas that are not included in formal lists, but that are seen as having heritage significance or making an important contribution to the built environment and its character. These buildings and structures are seen, therefore, as being ‘character defining’. Type C: are those buildings and structures that are seen as being ‘character supporting’ and form part of a group of significance as well as having some individual significance, but are not currently protected by statutory mechanisms. Of the 55 properties identified as being potentially affected there are; Slight - Moderate Affected Properties Cracks may require cutting out and patching. Recurrent cracks can be masked by suitable linings. Brick pointing and possible replacement of a small amount of exterior brickwork may be required. Doors and windows sticking. Utility services may be interrupted. Weather tightness often impaired
20 Properties in the slight to moderate category. Of these 20 there are; 4 Type A 15 Type B 1 Type C Total 20 properties
Slightly Affected Properties Cracks easily filled. Redecoration probably required. Several slight fractures inside building. Exterior cracks visible, some repainting may be required for weather-tightness. Doors and windows may stick slightly.
40 Properties in the slightly affected category. Of these 40 there are: 13 Type A 20 Type B 2 Type C Total 35 properties
Key: NZHPT Registered and AC Scheduled NZHPT Registered AC Scheduled CHI Listed Unscheduled of Merit
Built Heritage Risk Assessment Summary: MAP ID
ADDRESS
PROPERTY
STRUCTURAL RISK
HERITAGE CATAGORY
2
13 Albert Street
Yates Building
Slight
A
3
61 Albert Street
Shakespeare Hotel Brewery
Slight
A
4
35 Albert Street
Price Buchanan Building
Slight
A
5
37-39 Albert St
Building
Slight
A
6
49 Albert Street
Building
Slight
B
7
53 Albert St
Retail, Residential
Slight
B
8
76-86 Albert St
Historic Toilets, etc under roadside
Moderate
B
9
83-85 Albert St
Building
Slight
A
12
1 Beresford Square
Former Pitt Street Fire Station
Moderate
A
31
12-32 Customs Street West
Slight
A
47
211-235 Karangahape Road
Moderate
A
49
243 Karangahape Road
The Old Customs House Pitt Street Buildings (O’Malley’s Corner) Naval and Family Hotel
Moderate
A
50
246-254 Karangahape Road
Slight
A
51
256 Karangahape Road
Slight
A
56
11 Mayoral Drive
Hallenstein Brothers Building Mercury Theatre entrance - Norman Ng Building former Public Trust
Slight
A
57
9 Mercury Lane
Mercury Theatre former Kings Theatre
Moderate
A
59
1-13 Mt Eden Road
Retail, residential
Slight
B
73
151 Newton Rd
Retail/Recording Studio
Moderate
B
76
53 Pitts Street
Former Central Ambulance Station
Slight
A
80
78 Pitt Street
Slight
A
91
12 Queen Street
Slight
A
124
206-208 Symonds Street
Slight
8
128
221-2/221 Symonds Street
Pitt Street Wesleyan Church Former CPO - Britomart Transport Centre Cheapskates/Penny Farthing Bike Shop Retail
Moderate
B
129
224 Symonds Street
Former Post Office
Slight
B
130
227 Symonds Street
Retail
Moderate
B
132
235 Symonds Street
Retail
Moderate
B
133
239-241 Symonds Street
Retail
Moderate
B
134
245 Symonds Street
Retail
Moderate
B
135
249 Symonds Street
Retail
Moderate
B
136
253 Symonds Street
Retail
Moderate
B
MAP ID
ADDRESS
PROPERTY
STRUCTURAL RISK
HERITAGE CATAGORY
141
37-43 Victoria Street West
Retail
Moderate
B
142
51-53 Victoria Street West
Moderate
B
150
15-31 Wellesley Street West
Slight
A
153
42 Wellesley Street
Martha’s Corner Archibald and Sons Warehouse/ T & G Building Griffiths Holdings Building
Moderate
B
157
33 Wyndham Street
Office, Retail
Slight
B
163
61-65 Victoria Street West
Moderate
C
164
102 Albert Street
Slight
B
173
57 Albert Street
Slight
B
174
55 Albert Street
Slight
B
175
41 Albert Street
Residential
Slight
B
184
46 Albert Street
New Zealand Herald
Slight
B
213
Aotea Square
Aotea Centre (rear section)
Slight
B
218
270 Karangahape Road
Slight
B
219
268 Karangahape Road
Slight
B
220
258-266 Karangahape Road
Slight
B
225
257 Karangahape Road
Slight
B
226
259-261 Karangahape Road
Retail
Slight
B
230
65 Pitt Street
Retail/Commercial
Moderate
B
242
233 Symonds Street
Retail (timber construction)
Moderate
B
244
15-17 Mt Eden Road
Retail
Slight
B
245
21 New North Road
Retail
Slight
B
248
14 New North Road
Villa Dalmacija
Slight
C
286
210 Symonds Street
Retail (French CafĂŠ)
Slight
C
323
78 Pitt Street
Wesleyan Bicentennial Hall
Slight
B
328
231 Symonds Street
Retail
Moderate
B
Limitations of Schedule While every effort has been made to ensure individual buildings and structures are accurately described as to extent and heritage classification the map is illustrative only and the location of buildings and structures is indicative only. Difficulties were encountered reconciling GIS street addresses with individual heritage classifications and building outlines shown on aerial photographs. Some of the properties are individually owned or on separate land parcels but form part of a larger building. An effort has been made to recognize this but there will need to be further specific structural analysis completed at a second stage our identification work with actual building construction.