Project Specification Rev 1 | Northgate Chambers — Floors 4–6 Cat-B Fit-Out

Rev	Date	Description	Prepared	Reviewed	Status
Rev 0	15 May 2026	Draft for internal review — 9 of 11 packages complete	A. Pereira	D. Marchetti	Internal Draft
Rev 1	22 May 2026	Issued for client review — all 11 packages, 148 clauses	A. Pereira	D. Marchetti	For Review

SPC-A1

Demolition & Strip-out

Source: SPC-A-01 §A10 · Trenholme Architects Rev B

Clauses

Strip-out of existing Cat-B fit-out across Floors 4, 5 and 6. Sequenced top-down (L6 first). All existing partitions, suspended ceilings, floor finishes, tea point installations and secondary M&E drops to be removed. Cat-A base-build services and risers to be protected in situ. Licensed waste disposal required.

A1.01 SPC-A-01 §A10.110

General demolition — existing partitions

Remove all existing stud partitions, glazed screens and door sets across L4, L5 and L6. Protect all structural columns, riser walls and compartment-line walls (as identified on DWG-A-01 Rev D). Cut flush to soffit — do not damage structural slab or fire-stopping. All waste to be segregated and disposed of via licensed waste carrier. Asbestos status: R&D survey clear (May 2024); re-inspect if concealed voids are opened.

A1.02 SPC-A-01 §A10.120

Existing ceiling removal

Remove all existing suspended ceiling systems including grid, tiles, hangers and perimeter trims. Retain and protect existing Cat-A fire-rated ceilings to riser and landlord plant areas. M&E services above existing ceiling to be surveyed and photographed prior to ceiling removal. Coordinate with M&E subcontractor to isolate secondary drops before strip-out commences.

A1.03 SPC-A-01 §A10.130

Floor finish removal

Remove all existing carpet tiles, vinyl flooring, transition trims and adhesive residues. Raised access floor panels to be retained where serviceable — panel survey to confirm replacement quantity (estimated 15% replacement rate). Clean and degrease all retained pedestals. New replacement panels per SPC-A5.

A1.07 SPC-A-01 §A10.170

Noise and vibration — adjacent tenant protection

Floors 1–3 remain occupied by existing tenants. All demolition, cutting, drilling and impact works restricted to 10:00 – 16:00 Monday to Friday. Advance tenant notification required 48 hours prior to commencement of noisy works on each floor. Noise monitoring to be installed at L3 ceiling level for duration of strip-out phase. Maximum permissible noise level at L3: 75 dB LAeq,1hr.

Showing 4 of 12 clauses. Full section includes: M&E secondary strip-out (A1.04), tea point removal (A1.05), door & frame removal (A1.06), protection to retained fabric (A1.08), waste segregation & disposal (A1.09), sequencing protocol L6→L5→L4 (A1.10), completion handover per floor (A1.11), photographic record requirement (A1.12).

SPC-A2

Internal Partitions & Doors

Source: SPC-A-01 §K10, §L40 · Trenholme Architects Rev B

Clauses

New stud partitions, glazed screens, door sets and ironmongery. Meeting suite walls specified at Rw 42 dB (confirmed per SG-15 closure — legal-sector privacy requirement). Glazed partitions with manifestation per tenant brand approval. Fire-rated glass at compartment line (6 m² Pyrobel 30, per CC-06).

A2.01 SPC-A-01 §K10.110

Stud partitions — open plan to meeting suite

Metal stud partition system: 92mm C-section studs at 600mm centres, twin layers 15mm acoustic-grade plasterboard each side, 75mm mineral wool infill (45 kg/m³ minimum density). Acoustic performance: Rw 42 dB minimum (tested to BS EN ISO 10140). Partition head detail to achieve full-height seal to slab soffit — no air gap. Seal all service penetrations with intumescent mastic.

Head track: fixed to soffit via resilient channel (decoupled from structure)
Base track: fixed to raised access floor pedestal line, not direct to panel
Junction with glazed screen: aluminium framing system per SPC-A2 clause A2.06

A2.06 SPC-A-01 §L40.210

Glazed partition system — meeting suites

System: Aluminium-framed single-glazed partitioning, 12mm toughened laminated acoustic glass. Manufacturer basis: Optima Systems or approved equivalent. Frame finish: anodised aluminium, colour RAL 7016 (anthracite grey). Acoustic: Rw 42 dB (system-tested, not element-tested). Door integration per ironmongery schedule (clause A2.12). Manifestation per clause A2.08.

Design intent cross-reference: DI-02 (meeting suite acoustic privacy) — "a passing colleague cannot hear named-client information." The 42 dB specification directly serves this intent. Sample SMP-07 approved.

A2.08 SPC-A-01 §L40.230 + SG-22

Manifestation — glazed partitions

Manifestation to all full-height glazed partitions per BS 8300-1:2018 (visibility marking for safety). Pattern: frosted gradient (approved per SMP-08 and tenant brand review 21 May 2026). Applied at two bands: 850–1,000mm AFL and 1,400–1,600mm AFL. Density sufficient to provide standing-height visual privacy from corridor. Pattern to be consistent across all three floors per DI-06 (visual continuity).

A2.12 SPC-A-01 §L40.280

Door sets — meeting suites

Door leaf: 44mm solid core, European oak veneer to match feature wall (SPC-A4), factory-finished hard-wax oil matt. Frame: shadow-gap detail, 6mm between door frame and adjacent plaster/joinery — no architrave. Ironmongery: brushed brass lever on rose (Allgood Modric or approved equivalent), magnetic seal system (Lorient IS8010 or equivalent), overhead concealed closer (Dorma ITS 96 or equivalent), privacy indicator (meeting rooms only). Acoustic: Rw 32 dB minimum (door assembly tested). Sample SMP-06 approved 16 May 2026.

Design intent cross-reference: DI-08 (wayfinding — no signage clutter). Meeting suite names etched into brushed brass plate on door frame, no applied plastic signage.

A2.18 CC-06 resolution · Restall fire engineer

Fire-rated glazing — compartment line

6 m² of glazed partition adjacent to the L6 compartment line to be specified as fire-rated (Pyrobel 30), providing 30 minutes integrity and insulation. Frame system to be fire-rated variant of the standard aluminium system (clause A2.06). Fire engineer sign-off received from Restall Fire Consultancy 14 May 2026 (Ref RFC-NG-004). +£4,800 to partition package (per coordination clash CC-06 resolution).

Showing 5 of 22 clauses. Full section includes: partition types schedule (A2.02–A2.05), glazed door sets (A2.07), general-area doors (A2.09–A2.11), ironmongery schedule (A2.13), fire-stopping at partitions (A2.14), junction details (A2.15–A2.17), services coordination zones (A2.19–A2.20), snagging & sign-off protocol (A2.21–A2.22).

SPC-A4

Joinery — Meeting Suites & Tea Points

Source: SPC-A-01 §Z11 · Trenholme Architects Rev C · SMP-01 approved

Clauses

Bespoke architectural joinery across all three floors: fluted European oak veneer feature walls to 8 meeting suites, tea point cabinetry with Corian worktops, full-height storage walls, and integrated AV cabling channels. Long-lead item (LL-01) — 10–12 week manufacture. Sample SMP-01 (oak veneer panel) approved 14 May 2026. Mock-up MU-01 signed off 9 June 2026.

A4.01 SPC-A-01 §Z11.110 · SG-01

Meeting suite feature walls — veneer specification

Timber species: European Oak (Quercus robur). Grain match: book-matched (adjacent panels mirrored). Grade: AA — consistent colour, minimal sapwood, no open knots. Fluting profile: 12mm depth at 40mm centres (per SMP-01 approved sample). Finish: hard-wax oil, matt sheen (Osmo Polyx-Oil 3032 or approved equivalent). Panel substrate: 18mm moisture-resistant MDF with high-pressure veneer lamination. Approximate coverage: 96 m² across 8 meeting rooms (L4/5/6).

Design intent cross-reference: DI-05 (material palette — restrained, partner-grade). "No statement colour, no trend material. Should still feel current in 12 years." European oak selected for longevity and timelessness over trend-led alternatives.

A4.04 SPC-A-01 §Z11.140 · CC-04

Integrated AV cabling channels

Every meeting suite feature wall to incorporate internal cable channels: 80 × 50mm minimum clear internal dimensions, positioned behind the oak veneer panel at AV display locations. Low-level lockable access panels (brushed brass, flush with adjacent panel) at every channel termination point. Channels to accommodate: 4× HDMI 2.1 cables, 2× Cat6A data cables, 1× mains power feed. Channel layout per joinery shop drawings (coordinated with AV specialist per CC-04 resolution, 12 May 2026).

Design intent cross-reference: DI-07 (joinery as integrated infrastructure). "No exposed conduit, no surface-mounted screens. Cabling channels designed at spec stage, not retro-fitted on site."

A4.09 SPC-A-01 §Z11.210

Tea point cabinetry

3 tea points (one per floor, consistent specification). Base units: 18mm moisture-resistant MDF carcass, European oak veneer doors to match feature walls (grain-matched within each tea point, not required to match meeting suites). Worktop: Corian (Glacier White or approved equivalent), 20mm solid surface, undermount basin integration, seamless backsplash 150mm. Wall units: open-fronted shelving in oak veneer, integrated LED strip lighting (warm white, 3000K). Appliance provision: utility cut-outs for dishwasher, fridge, instant boiling water tap — tenant-direct supply, contractor to provide services terminations only (per AP-07 closure).

Design intent cross-reference: DI-03 (tea points as collaboration zones). "Booth seating, soft lighting, acoustic ceiling treatment. Visible from open plan but not overheard."

Showing 3 of 18 clauses. Full section includes: full-height storage walls (A4.02–A4.03), joinery door integration (A4.05), shadow-gap junction details (A4.06–A4.08), tea point bin pull details (A4.10), site survey requirements (A4.11), shop drawing protocol (A4.12), factory pre-fit attendance (A4.13), sample & mock-up requirements (A4.14), delivery & install sequencing (A4.15), protection during following trades (A4.16), snagging protocol (A4.17), warranty & maintenance (A4.18).

SPC-M1

Mechanical — Supplementary Cooling

Source: SPC-M-01 §T10, §T31 · Lambourne Vance Engineers Rev B

Clauses

Supplementary cooling to augment the landlord Cat-A baseline across all three floors. Fan coil units, ductwork modifications, condensate routing and BMS interface. Subject to landlord sub-main capacity upgrade (R-03 confirmed). FCU positions coordinated with structural beams per CC-01 resolution.

M1.01 SPC-M-01 §T10.110

Fan coil units — type and rating

Manufacturer: Daikin FWF-C series (or approved equivalent). Type: horizontal concealed ceiling-void mounted. Rating: 3.5kW cooling / 4.0kW heating per unit. Quantity: 22 units total (L4: 7, L5: 7, L6: 8 — per revised layout Rev C following CC-01 resolution). Refrigerant: R-32 (low-GWP). Connection to landlord chilled water loop via isolation valves at each floor riser connection point. Controls: integrated BMS interface via BACnet protocol, local thermostat override per zone.

M1.06 SPC-M-01 §T10.160 · CC-01

FCU positions — structural coordination

FCU positions per Lambourne Vance Rev C drawings (issued 8 May 2026), incorporating CC-01 resolution: two L5 FCU positions relocated 600mm north of original design to clear structural beam soffit; one L5 FCU substituted for slim-line equivalent (Daikin FWF-C Slim, 2.8kW). All units to maintain minimum 150mm clearance from structural elements. Access panels per SPC-A3 (acoustic-rated, clause A3.07).

M1.12 SPC-M-01 §T31.120

BMS interface — landlord system integration

All tenant FCUs to be integrated with the landlord's existing Trend IQ4 BMS via BACnet/IP gateway. Gateway to be provided by tenant's M&E subcontractor and installed at each floor's BMS outstation. Monitoring points: supply/return water temperature, fan speed, room temperature, setpoint, occupancy status. Landlord BMS operator to be given read-only access to tenant floor data. Configuration protocol per Halberd Properties BMS access policy (Ref HP-BMS-2024-v3).

Showing 3 of 19 clauses. Full section includes: ductwork modifications (M1.02–M1.05), condensate routing (M1.07–M1.08), pipe insulation (M1.09), valve schedule (M1.10–M1.11), commissioning requirements (M1.13–M1.15), balancing (M1.16), O&M documentation (M1.17), labelling (M1.18), warranty (M1.19).

SPC-M2

Electrical, Lighting & Data

Source: SPC-M-01 §T31, §T32 · Lambourne Vance Engineers Rev B

Clauses

Sub-mains and floor distribution (switchgear LL-03), lighting (suspended linear to open plan, recessed to tea points, feature pendant to client-facing zones — per lighting decision 21 May), small power, Cat6A data cabling, floor box layouts, lighting control zoning and BMS interface.

M2.01 SPC-M-01 §T31.110

Sub-mains & floor distribution boards

Floor distribution: 800A MCCB panel per floor, fed from landlord's sub-main riser (capacity upgrade confirmed by Halberd Properties, letter of comfort 18 Apr 2026). Each floor panel to incorporate: main incoming isolator, CT metering (landlord check-meter), RCBO protection per final circuit. Switchgear manufacturer: Schneider Electric Prisma P (or approved equivalent). Long-lead item LL-03 — 9–10 week delivery. Order via Edmundson Electrical (Marlow nominated wholesaler).

M2.07 SPC-M-01 §T32.170 · SG-09

Lighting fittings — zone strategy

Three lighting zones with distinct fitting types (per lighting decision meeting 21 May, SG-09 closure):

Open plan: Suspended linear LED (Whitecroft Mantis III or equivalent), 4000K, UGR <19, direct/indirect ratio 40/60. Aligned to 1200 × 600 ceiling grid.
Tea points & collaboration zones: Recessed circular LED downlight (Whitecroft Mino or equivalent), 3000K warm white, dimmable via DALI.
Client-facing meeting rooms & reception: Feature pendant (Bocci 28 series or equivalent), 2700K, decorative complement to oak veneer. Quantity per room per lighting layout DWG-M-02 Rev B.

Design intent cross-reference: DI-04 (workstation lighting — comfort over compliance). "Lighting must support 8-hour reading without eye strain — direct/indirect mix, low UGR, daylight integration via L4 perimeter."

M2.14 SPC-M-01 §T32.340 · CC-03

Floor boxes — power & data

Floor boxes at workstation positions per tenant FF&E layout (Cushman Rev A). Product: slim 130mm floor box (selected per CC-03 resolution — existing raised floor cavity depth 150mm precludes standard 200mm product). Each box: 2× twin 13A switched sockets, 2× Cat6A RJ45 data outlets. Quantity: 48 floor boxes total (L4: 16, L5: 16, L6: 16). Floor box lid: brushed stainless steel, flush with carpet tile finish.

Showing 3 of 21 clauses. Full section includes: sub-mains routing (M2.02–M2.03), earthing & bonding (M2.04), circuit schedule (M2.05–M2.06), lighting control (M2.08–M2.10), emergency lighting (M2.11), small power (M2.12–M2.13), data cabling infrastructure (M2.15–M2.17), cable containment (M2.18), labelling (M2.19), testing & commissioning (M2.20), NICEIC certification (M2.21).

SPC-A3 · A5 · A6 · A7 · M3 · X1

Remaining Specification Sections

6 additional packages · 76 clauses total

Clauses

The following six packages are fully specified in the complete document (NG-PS-001 Rev 1). Summary scope and clause counts shown below. Each clause follows the same structure: clause ID, source reference, title, specification text, design intent cross-references and sample approvals where applicable.

SPC-A39 clauses

Suspended Ceilings & Acoustics

Acoustic tile ceiling (1200 × 600 plank, Class A absorption), exposed soffit treatment in collaboration zones, FCU access panels (acoustic-rated Knauf Aquapanel — per CC-05 resolution). Integration with lighting and M&E services above.

SPC-A511 clauses

Floor Finishes

Carpet tile (Milliken Laylines, confirmed per SG-04 closure 18 May), vinyl to tea points (Forbo Sarlon), raised access floor replacement panels (15% estimated). Transition details, underlay, subfloor preparation.

SPC-A68 clauses

Wall Finishes

Paint scheme (Dulux Trade matt, 5-colour palette per SMP-04 approved 14 May), vinyl wall covering to tea points (washable), feature wall finishes in client-facing areas. Manifestation per branding decision.

SPC-A76 clauses

L6 Reception & Feature Joinery

Reception desk, branded feature wall, low-level seating. Provisional sum item (£24k). Design intent confirmed Wk 5 (DI-09). Specification locked 16 Jun. Enquiry issued Wk 9. Order target Wk 10.

SPC-M314 clauses

Fire Detection & Compartmentation

Cat-B alterations to fire detection loop (addressable system, integration with landlord main panel), compartmentation at new partition lines, fire-stopping, smoke ventilation rebalancing. Restall Fire Consultancy sign-off required.

SPC-X18 clauses

Workplace AV

14× displays (55" commercial, Samsung QB55R or equivalent), 6× video bars (Poly Studio X50), ceiling microphones (Shure MXA920), control system (Crestron Flex). Provisional sum (£40k → ordered £38,400). RFI NG-014 closed 27 May.

Appendix A — Drawings Referenced

Ref	Title	Discipline	Rev	Date
DWG-A-01	General Arrangement — L4/5/6 GAs, partition layouts, ceiling plans (14 sheets)	Architectural	Rev D	22 Apr 2026
DWG-A-02	Joinery & Finishes — meeting suites, tea points, reception (11 sheets)	Architectural	Rev C	15 Apr 2026
DWG-M-01	Mechanical Modifications — FCU positions, ductwork, condensate (8 sheets)	M&E	Rev C	8 May 2026
DWG-M-02	Electrical & Lighting — power, data, lighting layouts, control zones (7 sheets)	M&E	Rev B	15 Apr 2026
FFE-01	FF&E Layout — workstation positions, meeting room sizing, reception (3 sheets)	Tenant	Rev A	8 Apr 2026

Appendix B — Standards & Codes Referenced

Standard	Title	Applies to
BS EN ISO 10140	Acoustics — Laboratory measurement of sound insulation	SPC-A2 partitions
BS 8300-1:2018	Design of accessible buildings — manifestation	SPC-A2 glazing
CIBSE LG7	Lighting for offices	SPC-M2 lighting
BS 7671:2018+A2:2022	Wiring Regulations (18th Edition + Amendment 2)	SPC-M2 electrical
Approved Document B	Fire safety (Volume 2 — buildings other than dwellings)	SPC-M3 fire
CDM 2015	Construction (Design and Management) Regulations	All sections
BS EN 13501-1	Fire classification of construction products	SPC-A3 ceilings, SPC-A2 partitions

Appendix C — Samples & Mock-up Register

Ref	Sample	Status	Approved	Clause
SMP-01	Joinery oak veneer panel (600 × 400)	Approved	14 May 2026	A4.01
SMP-02	Carpet tile — Milliken Laylines (2 colourways)	Approved	18 May 2026	A5.01
SMP-03	Vinyl flooring — Forbo Sarlon (warm grey)	Approved	18 May 2026	A5.06
SMP-04	Wall paint scheme (5 colours, Dulux Trade)	Approved	14 May 2026	A6.01
SMP-05	Lighting fittings (3 types, 3 zones)	Approved	21 May 2026	M2.07
SMP-06	Door & ironmongery set	Approved	16 May 2026	A2.12
SMP-07	Glazed partition system (Optima)	Approved	21 May 2026	A2.06
SMP-08	Manifestation pattern (frosted gradient)	Approved	21 May 2026	A2.08
MU-01	Meeting suite mock-up — full scale (8 m²)	Approved	9 Jun 2026	A2/A4/M2/X1

Disclaimer: This specification has been produced by Built AI Ltd using AI-assisted workflow tools applied to the awarded contract documents, tender clarifications, design drawings and design intent captured during the Pre-Con Pack™ Stage 02 (Fine Print™) process. All specification clauses are source-traced to their origin documents. This specification does not replace competent review by qualified designers, engineers and the project team. Final approval of all specification items remains with the Employer, Contract Administrator, Principal Designer and relevant competent persons. Built AI Ltd does not provide structural, fire or M&E engineering design services — all engineering content is derived from and traceable to the appointed design consultants' documents.

Project Specification

Contents

Demolition & Strip-out

Internal Partitions & Doors

Joinery — Meeting Suites & Tea Points

Mechanical — Supplementary Cooling

Electrical, Lighting & Data

Remaining Specification Sections

Appendix A — Drawings Referenced

Appendix B — Standards & Codes Referenced

Appendix C — Samples & Mock-up Register

148 clauses. 11 packages. One source of truth.