Bin storage and collection points in flatted schemes

Bin store design for flats fails validation more often than almost any other detail of a small flatted scheme, and it fails for the same three reasons every time: not enough capacity, too far for the crew, and a door the residents will not use. The council's waste team is a consultee in all but name, and an objection from them after submission usually means moving a wall.

Work the waste strategy up alongside the ground floor plan, not after it. Capacity comes from unit numbers and collection frequency, and those two figures determine a floor area that has to exist somewhere.

Calculating storage capacity from unit numbers

The method is arithmetic. Multiply the number of dwellings by the per-dwelling weekly volume the local waste team specifies for each stream, divide by the capacity of the containers the council actually uses, and round up.

Standard containers in English collections are 240 litre wheeled bins, 660 litre and 1,100 litre four-wheeled bins, with 1,100 litre bins the usual choice for communal stores. Each 1,100 litre bin needs roughly 1.3 metres of width, 1.1 metres of depth including the lid swing, and clear space in front for manoeuvring.

Take an illustrative example. A block of 30 flats, weekly residual collection, and a waste team standard of 80 litres per flat per week for residual waste: that is 2,400 litres, so three 1,100 litre bins with some headroom. Add an equivalent or larger provision for dry recycling, a separate food waste arrangement, and space for bulky items, and the store is already approaching 15 m² before circulation. The 80 litre figure here is an assumption for illustration only. Every authority sets its own rate, and some set it per bedroom rather than per dwelling.

Two adjustments catch people out. Fortnightly collection of a stream doubles the storage for that stream. And a scheme with a high proportion of one-bedroom flats generates less residual waste per unit but roughly the same recycling volume, so the streams do not scale together.

Carry distances for residents and crews

Approved Document H deals with solid waste storage for dwellings, and the conventions that flow from it, reinforced by the waste management code of practice, set the geometry.

Residents should not have to carry waste an unreasonable distance from their front door to the store, and 30 metres is the figure commonly applied in England. Crews should not have to drag a loaded 1,100 litre bin far, and councils typically want the collection vehicle able to stop within about 25 metres of the store, on a level, firm, unobstructed route.

Gradients matter as much as distance. A loaded four-wheeled bin on a ramp steeper than roughly 1 in 12 becomes a manual handling problem, and waste teams refuse routes that involve steps, kerb upstands, gravel or a threshold the wheels catch on. Dropped kerbs and flush thresholds along the drag route are worth drawing at 1:50 rather than leaving to the contractor.

Where the drag route crosses a shared surface or a private drive, check that the refuse vehicle can actually reach the stopping point. Swept path analysis for a three-axle refuse vehicle is the standard evidence, and the geometry it needs is set out in private drive geometry, gradients, widths and turning.

Where the collection point can sit

The collection point is not always the store. On constrained sites the accepted arrangement is a separate presentation area at the site edge, with bins moved there by a caretaker on collection day and returned afterwards.

That works only if someone is contracted to do it. A management company obligation, recorded in the waste strategy and secured through the section 106 agreement or a condition, is what makes a presentation area acceptable. Without it the council will assume the bins stay on the pavement, and it will object.

Where the vehicle has to enter the site, the layout needs to let it leave in forward gear. Reversing more than a short distance is refused by most highway authorities on safety grounds, and a turning head sized for a refuse vehicle is larger than one sized for a fire appliance. Design the turning head first and fit the parking around it.

On shared surface streets the interaction between the refuse vehicle, parked cars and the surface treatment causes more objections than the turning geometry itself, which is covered in what highway officers want from shared surface streets.

Ventilation, drainage and cleaning

A communal store holds food waste in a warm enclosed space. Design it accordingly.

• Permanent natural ventilation at high and low level, sized generously, with vermin-proof mesh.
• An impervious, coved floor laid to fall towards a trapped gully connected to foul drainage, so the store can be washed down.
• A cold water tap or hose point adjacent, with a hose reel that will not be stolen.
• Washable wall finishes to at least 1.2 metres, and no untreated timber.
• Lighting on a sensor, because a dark store is an unused store.
• Doors wide enough for a 1,100 litre bin to pass without the lid catching, held open by a hook or a hold-open device while bins are moved.

Fire is the other consideration. Bin stores catch fire, and a store built against the elevation under a bedroom window is a problem the fire strategy has to answer. Detached stores, fire-rated construction, or siting away from escape routes and openings are the usual responses, and the fire engineer should see the waste layout before the application goes in rather than at building control stage.

Recycling streams and bulky waste

English collections are moving towards a consistent set of streams, including separate food waste collection from households. Check with the waste team which streams will apply in the borough by the time the scheme completes, because designing to today's two-stream arrangement and completing into a four-stream one leaves the store short.

Bulky waste is the forgotten item. Mattresses, furniture and flat-pack packaging accumulate beside the bins in every flatted scheme where no space was provided for them. A modest bulky store, or a marked area within the main store, prevents the fly-tipping that follows.

Where a scheme includes commercial units at ground floor, their waste is a separate arrangement entirely. Commercial occupiers hold a duty of care for their own waste and usually contract privately, so they need their own store, their own presentation arrangement and their own vehicle access. Sharing a residential store rarely survives first contact with the managing agent.

Designing the store so it is used

The behavioural point is simple and often ignored. Residents use the nearest, easiest, best-lit route. If the store is behind the building, down a ramp, through a heavy door that needs a fob, waste appears in the lobby and beside the entrance instead.

Practical responses that work:

1. Put the store on the natural route between the entrance and the car park, not behind the block.
2. Use a door that opens outward with a light action, and avoid fob-controlled access unless fly-tipping from outside is a real risk.
3. Give each stream a clearly different container colour and a sign at eye level in the door opening, not on the far wall.
4. Provide enough capacity that the recycling bin is not full by Wednesday, since a full recycling bin sends everything into the residual stream.
5. Keep the floor free of steps and the threshold flush.

Agreeing the arrangement with the waste team

Do this before the application, in writing. Ask for the per-dwelling volumes for each stream, the container types in use, the collection frequencies, the maximum drag distance the crews will accept, the vehicle dimensions for swept path work, and whether the authority will collect from a presentation area or insists on reaching the store.

Record the answers in the waste strategy submitted with the application and cross-reference them on the ground floor plan. Where the scheme needs one, a Waste Management Strategy sets out the same information in the format councils expect, alongside the Transport Statement dealing with vehicle access.

One honest caveat: standards vary more between authorities on waste than on almost any other technical matter, and nothing in a national document overrides what the local crews will actually do. Ask them.

Enter your postcode on PlanScope to see which supporting documents a flatted scheme at your site is likely to need.

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