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Granary Wharf Buildbing Refurbishment

A Design proposal to Conservation Officers and Town Planner, Leeds.
by

Freddy Jackson

on 28 November 2013

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Transcript of Granary Wharf Buildbing Refurbishment

Fire
Historic buildings are built with little or no consideration for fire resistance.



Structure

- Retain architectural and historical characteristics of building

- Improve functional performance for proposed use

Sound
Granary Wharf: Grade II* Listed Building
Design Proposal
Minimizing the potential for out-break of fire.
Striking a balance between listed building consent and Building Regulations
Detection Systems
Aspects for consideration:
Detection and fire alarm systems in
accordance with BS 5839-6:2004
Smoke alarms – BS 5446-1:2000
Heat alarms – BS 5446-2:2003
Positioning set out by BS 5839-6
Systems operated by mains operated with standby power supply. e.g. Battery

Requirements depend on;
Use and fire load of the building
Height of the top floor (indicates ease of evacuation and rescue)

Requirements for our flats:

- Every floor (unless within the same flat)
- Every wall separating a flat from another part of the building
- Every wall enclosing a refuse chamber

Sprinkler system not necessary for our building (below 30m).

All openings for pipes, ducts and conduits require fire stopping

Existing Component Protection
Roof structure to be lifted.
Additional windows.

Features to be retained:
- Channel accessed from canal

- glazed areas to show previous use and architectural merit.

Vaulted ceilings and cast iron columns.


Granary Wharf made up from more porous materials, doesn't incorporate barriers to prevent external moisture.

Ventilation to reduce risk of Mould occuring

Use of trickle ventilators into the timber framed windows.

Preserves historical influence, whilst reducing air infiltration.

Windows are highly expensive, shouldn’t be replaced.

Introduction of double glazing


Windows

Look to incorporate insulating plaster
boards into the internal walls, effective energy saving method.

Plasterboard must contain an air gap in order to reduce the chance of moisture occurring.

Should only be added to the rear of granary wharf, as it can damage the detailing which surrounds the windows and doors.

Make sure that the insulation does not damage the buildings architectural significance.

Insulation

Would allow heat to be extracted from the nearby lake.

The water temperature is normally higher than the ambient air temperature in the winter.

Can either be a closed loop or open loop system.

Preferred to a ground source heat pump.

Water source heat Pump

Thermal Performance

Work to be done in accordance with part L1a + L1b of the building regulations.




Legal consideration

Health and Safety
Barriers
Disturbances
Scaffolding
south elevation suspended scaffold
Minimize disturbance to the public

-Noise

-Dust

-Construction activity
-the canal needs to be protected from pollution.
Signage
- the proposed temporary fencing is Heras panel with an attached echo barrier.
- the site entrance should have a secure gate to stop members of the public from entering the site unknown
Site Investigation

Asbestos?

No Excavation

working at height
Mobile Scissor Lifts
Site Layout
-wind breakers
Proposed Alterations
Main Objectives
Main Objectives
Main Objectives
Main Objectives
Minimize risk of on-site activities.

Reduce danger and disturbance to the public

Provide a safe working environment




Site Inductions
- all construction workers must be considered safety competent before starting work
-site inductions take place in the welfare cabin
- correct PPE must be worn at all times
Main Objectives
- reduce the sound traveling

- don't disrupt the values of the building that entitle its listing
Design & Layout
• Bedrooms located away from sources of noise such as living rooms, washing machines etc.

• Circulation areas and ancillary spaces used to further separate quiet zones.

• Soft floor finishes such as carpets, cork or rubber products will reduce impact noise.

• Heavy curtains in bedrooms will further reduce noise infiltration.

• Soft finishes and furnishings in bedrooms will reduce reverberation times.

Specification
• Resilient underlay beneath the floor finish to reduce impact sound transmission.
• Acoustic flanking strips to floor perimeter to isolate the floors finish from the walls.

• Internal partitions for party walls, apartment perimeters and bathrooms will use Gypframe Acoustuds with acoustic plasterboard and acoustic mineral wool.

• Windows will have draught strips around opening lights and sealant around the frames to improve air tightness.

• Secondary glazing will be fitted internally to reduce sound transmission and heat loss while retaining the original timber windows.

• Apartment doors will be high density to reduce sound transmission.
• Draught strips will be fitted to door frames and underside of doors to improve air tightness.

Services
• Quiet services appliances and fixtures will be used.

• Air ducts will be fitted with baffles.

• Lagging for pipes an soil stacks will reduce transmission of vibrations.

- Improve thermal performance of the building

- keep in mind the reasons for its initial listing

- Main aim when carrying out the work is to preserve and enhance the buildings archaeological significance
Compartmentation
Two Main materials to protect
- Cast Iron Columns
-Timber Roof Structure

Initial Ideas
- Case the columns in concrete and mineral wool
- Compartmentise the roof using fire rating plasterboard ceiling

Proposed paint Solutions
- Astro HBP Primer gives 60 mins Fire protection to BS476 Part 21
- Rawlins Flameproof Fire Retardant varnish protects internal timber BS476 part 6 & 7 + Class O & Class 1
- POLYA Spray on system for concrete ceilings
Full transcript