Plans & Specifications

Existing Construction (Ground to fifth, plus original roof)

A) Foundations
Concrete piles, type, bored piles, with pile caps and reinforced in-situ concrete spanning ground beams

B) Ground Floor
Suspended, reinforced in-situ concrete ,200mm deep ground floor slab. The slab is designed to span in one direction between the ground beams. The span direction is parallel to Chichester Street.

C) Upper Floor Construction and Superstructure
Six storey high concrete framed building consisting of reinforced cast in-situ columns which support floors constructed using a 175mm deep reinforced cast in-situ concrete two way spanning flat slab. The columns centres are approximately 5500mm x 4500mm centres. The roof was also constructed using a two-way spanning concrete slab. This will be replaced with reinforced in-situ, flat slab concrete to achieve the general office loading as it will become the sixth floor.

D) Imposed Loadings
The ground floor was designed for use as a retail unit with an allowable imposed load of 4.0Kn/m2. The upper floors were designed for use as general offices with an allowable imposed load of 2.50Kn/m2.

New Construction (7th & 8th floor over existing plus full height rear extension)

A) Foundations
Piled foundations, with pile caps and reinforced in-situ concrete spanning ground beams. The foundation system will be independent of the existing building. Concrete Grade C35/ 40. BS 8110 and in accordance with the code of practice for the structural use of concrete

B) Ground Floor
Suspended, reinforced in-situ concrete, 200mm deep ground floor slab. The slab is designed to span in one direction between the concrete ground beams, with insulation and DPM as required by Building Control.

C) Upper Floor Construction and Superstructure
Superstructure will incorporate a Concrete Frame comprising reinforced in-situ concrete columns supporting upper floors constructed using a reinforced in-situ concrete flat slab designed in accordance with BS8110 and in accordance with the code of practice for the structural use of concrete.

The top floor of the new build and existing building extension will be formed using a structural steel frame designed in accordance with BS 5950 system. All steel sections to be grade 5275 to EN 10025 & 10210. CE marking will apply to all steelwork which will have an Execution Class EXC2 in accordance with BS EN 1090-2.

All steelwork will be shot blast cleaned to SA 2.5 to BS EN ISO 8501-1 and painted two coats zinc phosphate having a OFT of 75 microns. All external steelwork will be hot dipped galvanized to BS 729 or of stainless steel by an approved specialist.

D) Imposed and Dead Loadings
Concrete piles, type, bored piles, with pile caps and reinforced in-situ concrete spanning ground beams

External Walls:

Front elevation to comprise proprietary thermally broken polyester powder coated double glazed aluminum curtain walling system with solar reflective, low ‘E’ coated glazing. System wind tested in accordance with the recommendation of the C.W.C.T. Standards and Guide. Glazing to include opaque panels at floor junctions, with proprietary stone cladding system on insulated structural wall. Side and rear elevations to comprise proprietary composite panel cladding system to high level, as elevations, and rendered insulated cavity walls to lower levels, with curtain walling glazing as per front elevation.

Roof:

Roof finishes will be single layer roof covering, Trocal or equivalent on insulation . Trocal roof covering and Kingspan insulation board to be laid on metal decking, gauge 0.7 mm, fixed to metal purlins. Roof area to include propriety walkway and fall arrest system.

Ground Floor Entrance Reception & Lift/ Stair Lobby:

Reception Ceiling:
Part Gyproc MF Suspended plasterboard ceiling with polished plaster finish and feature coloured metal suspended ceiling.

Reception Floor:
High quality polished stone floor tiling and proprietary entrance matting.

Reception Walls:
Part concrete effect porcelain wall tile to side walls and high quality polished stone wall tiling to remaining walls.

Stairwell Wall:
2 coat plaster and emulsion paint finish.

Stairwell Ceiling:
Gyproc MF suspended plasterboard ceiling with emulsion paint finish.

Main Stair:
Pre-cast concrete stairs and landings to stair, with ceramic tile finish and stainless steel and glass handrailing /balustrading.

Main Entrance Doors:
Powered circular entrance doors with fully glazed manual doors either side.

Upper Floor Lift Lobby’s:

Ceiling:
Painted plaster finish to expose underside of existing slab and structural beams.

Floor:
Ceramic Floor Tiling.

Walls:
2 coat plaster and emulsion paint finish.

Doors:
Solid core timber door sets with hardwood veneer finish with vision panels and brushed aluminum door furniture. To stairwell with proprietary fire resisting glazed screen and doors to office areas.

General Office Areas:

Ceilings:
Painted plaster finish to exposed underside of existing slab and structural beams.

Floor:
Quality carpet tile finish on proprietary Kingspan computer access floor

Walls:
2 coat plaster and emulsion paint finish.

Doors:
Solid core timber door sets with hardwood veneer finish with vision panels and brushed stainless steel door furniture.

Small Offices/ Quiet rooms (Off General office area)

Ceilings:
Painted plaster finish to exposed underside of existing slab and structural beams.

Floor:
Quality carpet tile finish on proprietary Kingspan computer access floor

Wall Construction:
Insulated metal stud with plasterboard finish.

Wall finish:
Plaster and emulsion paint finish.

Doors/ Glazed Partitions:
High quality proprietary system.

Large Meeting/ Conference Rooms:

Ceilings:
Painted plaster finish to exposed underside of existing slab and structural beams.

Floor:
Quality carpet tile finish on proprietary Kingspan computer access floor.

Wall Construction:
Insulated metal stud with plasterboard finish.

Wall finish:
Plaster and emulsion paint finish.

Doors/Glazed Partitions:
High quality proprietary system.

General Toilet/ Shower Areas:

Ceilings:
600 x 600mm Armstrong Prima Tegular (Dune Plus) ceiling tiles in 15mm Truluk grid.

Floors:
Ceramic floor tiling.

Walls:
Part Ceramic wall tiling/ part painted plastered walls.

Doors:
Solid core timber door sets with hardwood veneer finish and brushed aluminum door.

Cubicle/Vanity:
Cubicle and vanity units to be ‘Line’ range from Petal Cubicle & Washroom Systems ltd or equal approved

Ground floor stores / switch room / escape corridors

Ceilings:
600 x 600mm Armstrong Prima Tegular suspended ceiling in 15mm Trulok grid.

Floor:
Painted concrete screen

Walls:
2 Coat plaster and emulsion paint finish.

Doors:
Painted solid core timber doors.

Bins Store

Ceilings:
Exposed structure above.

Floor:
Bitmac finish.

Walls:
Fair face blockwork

Doors:
Painted solid core timber doors.

Escape Stair

Ceilings:
600 x 600mm Armstrong Prima Tegular suspended ceiling in 15mm Trulok grid.

Floor:
Underside of landings and stairs to have plaster finish and emulsion painted. P/C concrete stairs and landings with proprietary carpet tile finish.

Walls:
2 coat plaster and emulsion paint finish.

Handrailing:
Painted steel handrailing/ balustrading.

Doors:
Solid core timber door sets with hardwood veneer finish with vision panels and brushed aluminium door furniture.

General

The buildings will be designed as Grade A+ standard with air conditioning. Energy demand will be mitigated by a ‘fabric-first’ approach, (using the building form and fabric to minimise energy demand by, for example, increased insulation, solar reflective glazing, achieving high standards of airtightness, optimising the area of glazing) and then by selection of appropriate, efficient systems and products.

Life cycle costing will be employed in selecting appropriate systems.

‘Air conditioning’ will be by electric heat pumps (VRF) will provide both heating and comfort cooling as required, but without humidity control. The system will incorporate heat recovery where appropriate between north & south-facing zones.

Ventilation will be by an air handling unit incorporating heat recovery and variable speed drives fans will be incorporated to yield energy savings. The firefighting staircase will be provided with smoke ventilation and dry riser mains as required by local Building Regulations.

High Quality Sanitary fittings will have low water demand. The electrical services shall comprise the following:

• Mains power distribution system.
• General lighting installation
• Emergency lighting Installation
• General purpose socket outlets and small power installation.
• Fire Alarm installation
• Access control installation.
• IT services installation
• UPS back-up for LL management structured cabling backbone distribution system.
• Lightning protection installation.
• Generator for Essential Services
• Lifts with high quality internal finish will be designed to BCO standards with respect to waiting time and handling capacity.

Heating

by natural gas condensing boiler plant
LPHW to radiators in core areas only
Ventilation

by roof-mounted air handling units comprising heating, heat recovery, filtration & acoustic attenuation to give 10 litres/sec per person (based on 7.5 m2 per person NLA)
lnvertor speed control of fans
Toilet extract ventilation at 6 air changes/ hour
Cooling

Air-cooled heat pumps with roof-mounted condensing units.
3-pipe VRF indoor units for heating/cooling with heat recovery
Domestic Hot Water Services

Booster pumps fed from break tank
Pressure regulation at each floor level
Direct gas-fire d hot water heating
Building Management System

HVAC digital controls with optimum start/stop and weather compensation
Monitoring plant performance
Duty sharing and auto-rotation of main plant
Metering of utilities and sub-metering as required
Interface with fire detection & security lighting
Fire Protection

Fire-fighting Shaft with Fireman’s Lift and Dry riser

Mains Distribution

An NIE supply will be located on the ground floor and connected to the main switchboard on the ground floor. Configuration will allow each floor to be billed individually by the tenants chosen energy supplier. Sub-distribution boards will be located on each floor and metered sub-mains circuits.

Lighting Installation

• General Lighting will be by LED fittings with daylight linking controls in office areas to achieve 300 to 500 lux and comply with BS EN 12464-1:2011 Lighting and Lighting – Lighting of Work Places.
• Emergency Lighting shall be by standalone LED fittings to comply with BS 5266 Pt 1:2013 and Emergency Signage shall be complete with Euro Legend.

General Services

General Power will be provided in all areas utilizing twin 13amp socket outlets and general power supplies will be provided for intruder alarm, fire alarm, access control and mechanical services.

A complete under floor busbar trunking system and cable basket installation will be installed below the raised access floor in the offices.

The busbar trunking and cable tray will serve 4 section data recessed floor boxes incorporating socket outlets and outlets suitable for data.

A recessed floor box will be provided per 7.5m2 of NIA of office space and will contain 3No. twin socket outlets (i.e. 6No. power points) and 6No. RJ45 data outlets.

IT Services

IT services will consist of a multi-core fibre connection presented on each level from a central server room providing dedicated connection to the BT Open reach network through the site Distribution Point.

UPS

Provision for UPS back- up will be provided if necessary within the landlords LV switch room for landlord managed structured cabling distribution equipment.

Fire Alarm

A Fire Alarm System shall be installed throughout the building to 855839 Pt. 1: 2013 Ll

Access Control

An Access control system shall be installed to provide security to the building and prevent unauthorised access

Lightning Protection System

A lightning protection system shall be installed to EN 62305.

Generator

The generator shall be rated for Essential Services (for Life Safety) only.

Passenger lifts to achieve 30 seconds’ average wait time at 12% handling capacity (based on occupancy at 10m2 (NIA) per person, as BCO Guide 2014) One Fireman’s lift in fire-fighting shaft.

Designated Teleco Room (min area 12 m2)

Building will have a designated teleco room for the placement of ISP equipment.

Teleco room to be climate controlled but will have no other utilities passing through.

Teleco room to have a raised access floor.

Risers

Provision will be made for two stacked risers going from ground floor to top floor and will be separated by at least 7m with cupboards at every floor.

At least one riser to be directly above the Teleco Room.

Provision will be made for roof top fixed wireless installations and cabling. 4m2 has been set aside for wireless equipment with clear line of sight.

Provision will be made for ‘Meet-me’ chambers for incoming services, with at least one chamber being within the comms room.

All installed ducts will fall away from the building to prevent water ingress

Generator Provision

Provision will be made for the installation of a back-up generator with all appropriate interfaces to Teleco room equipment.

Common Area WiFi

Provision has been made for all common areas to have free wifi.

Co-ordination with fibre providers

Information in this regard to be made available to prospective tenants.

Bicycles in proprietary racks

Provision shall be made for the hanging of bicycles in proprietary cycle racks

Showering facilities on the ground floor

Provision shall be made to provide male, female and disabled persons showering facilities on the ground floor.