Who are we? Hargreaves Foundry has been casting iron since 1881. Hargreaves Foundry Group make a wide

range of products for different market sectors. We have the skills, experience and expertise

and are one of the few remaining iron foundries left in this country who can manufacture

bespoke iron castings. The group consists of three operating arms;

Hargreaves Foundry

A traditional iron foundry manufacturing cast iron products

Hargreaves Foundry Drainage

One of the UK’s leading suppliers of cast iron rainwater, soil & drainage products

Hargreaves Lock Gates

Manufacture and install canal lock gates, tidal doors, sluice gates and footbridges

Hargreaves Foundry

Hargreaves Foundry is a long established supplier of castings to the engineering sector, in

particular the machine tool industry. Hargreaves Foundry has supplied architectural castings

for award winning projects, both heritage and modern, and for internationally renowned

architects. We are also well known and respected by many artists who come to us for fine art

castings.

Our new venture into cast iron pavement and stallboard lights, builds on our existing skill set

to provide high quality products which suit each individual application.

Cast iron products are proven to be reliable, durable and strong. They are safe, none

combustible and with minimal maintenance will function for many, many years. Cast iron is

sustainable and can be fully recycled without any loss of its original properties.

The information in this brochure is liable to modification from time to time in the light of experience and

our commitment to continuous improvement.

Company Address Hargreaves Foundry Ltd. Water Lane, Halifax HX3 9HG www.hargreavesfoundry.co.uk

Foundry Sales Tel: 01422 399111 Email: info@hargreavesfoundry.co.uk General Office Tel: 01422 330607

http://www.hargreavesfoundry.co.uk/mailto:info@hargreavesfoundry.co.uk

Contents Who are we? ..................................................................................................................... 2

1. Product overview ......................................................................................................... 4

1.1 Product Summary ....................................................................................................... 4

1.2 Production ................................................................................................................ 4

1.3 Benefits ................................................................................................................... 4

1.3 Sustainability............................................................................................................. 4

2. Quality & Conformity ..................................................................................................... 5

2.1 Loading ............................................................................................................... 5

3. Technical painting Specification ....................................................................................... 6

3.1 Technical Data ....................................................................................................... 6

4. Lenses and Blocks ......................................................................................................... 7

4.1 Standard Glass Lens ................................................................................................. 7

4.2 Cast Iron Air Vent .................................................................................................. 7

5. Thermal properties ....................................................................................................... 7

6. Basement Illumination ................................................................................................... 8

7. Installation Guidance ..................................................................................................... 9

8. Bespoke products ....................................................................................................... 10

9. Stallboard Lights ........................................................................................................ 11

Appendix A – Pavement Light Specification .............................................................................. 12

Appendix B – Stallboard Specification ..................................................................................... 13

Appendix C – Other Hargreaves Products ................................................................................. 14

Bespoke Castings ........................................................................................................... 14

Lock Gates .................................................................................................................. 14

Hargreaves Foundry Drainage ............................................................................................ 14

1. Product overview

1.1 Product Summary In the Victorian era, cast iron became

prevalent in the urban environment and

in recent years it is experiencing a

resurgence. Pavement Lights are a

feature of the streets in many towns and

cities and many from the Victorian

heyday of cast iron are now nearing the

end of their useable lives.

Hargreaves Foundry has been developing

pavement lights suitable for use in

pedestrian areas. Pavement Lights are a

key architectural feature of a building,

new or old, allowing natural light into what could otherwise be a dark, uninviting cellar.

All Hargreaves Foundry Cast Iron Pavement Lights are tested and certified to the specified working load.

Unless otherwise requested, Hargreaves Foundry pavement lights are designed to support ordinary

pedestrian traffic and occasional, accidental vehicular traffic. As standard, Hargreaves Foundry pavement

lights will be supplied with a durable, bespoke paint system. (See section 3 Technical Painting).

1.2 Production Hargreaves Foundry Pavement Lights are produced at our traditional foundry in West Yorkshire and are hand-

finished by our team of experts. Hargreaves Foundry uses a traditional cupola furnace and skill sets that

have been developed and improved upon for many years.

All of our staff have been expertly trained, and this wealth of experience shows in the quality of the final

products. All patterns for castings are hand made by skilled craftsmen whose attention to detail produces

the high level of accuracy required for quality castings.

1.3 Benefits The benefits of cast iron over other materials used for pavement lights include;

• Cast iron is strong and durable, ideal for use in busy pedestrian locations

• Cast iron is a non-combustible material, and although the coating may produce limited smoke, the

cast iron will not contribute to a fire.

• Cast iron has proven longevity, some of the pavement lights we replace have been in service for over

150 years.

• Cast Iron is highly resistant to wear and will not produce dust when damaged.

• Cast iron looks good!

1.3 Sustainability Cast Iron is a re-useable material which can be recycled numerous times without loss of its original

properties. The majority of the raw materials used to cast Hargreaves Foundry Pavement Lights are 100%

recycled from known sources to ensure the final product is made from the correct material grade.

Hargreaves Foundry are committed to taking a sustainable approach to production and aim to reduce the

environmental impact of our industry. A copy of our Group environmental policy is available on our website.

2. Quality & Conformity Our processes are designed to ensure that our customers can be confident in both the quality and

consistency of our products. Pavement lights are inspected throughout all stages of production from pattern

making through moulding, finishing and painting.

We manufacture in grey iron to BS EN-GJL-250, and confirm this by testing & verifying routine material

samples at an independent laboratory. Each pavement Light casting is marked with a unique reference

number which can be used to trace the product back to its date of production

2.1 Loading It is important that Hargreaves Foundry are able to give our customers the confidence that the products we

supply are fit for purpose. To that end, every pavement light made is supplied with a certificate to confirm

the load to which it has been tested and rated.

2.1.1 Testing Hargreaves Foundry have invested in load testing

apparatus which allows all pavement light castings

to be tested up to their design load before

despatch to ensure they are fit for purpose. The

loads are usually applied on a 300 x 300mm test

platen placed in the centre of the pavement light

casting to ensure the test takes place where the

loading would have the greatest impact.

This process forms a major part of our

commitment to our customers to provide assurance

of the correct product to meet their requirements

2.1.2 Requirements Since there are no British, European or

International Standard which applies directly to

pavement Lights, Hargreaves Foundry has developed its own internal specification. This specification is

based on the maximum permissible single axle loadings for UK roads as laid down in BS EN 1991-2:2003

(Actions on Structures – Part 2: Traffic Load on Bridges) and a Statutory Safety Notice published by the

London Fire Brigade in June 2004.

Unless by special arrangement with a customer, all Hargreaves pavement lights are tested to withstand a

load of 100 KN tested on a 300 x 300mm test platen*. This gives an equivalent tyre loading of 1111 kN/m2.

The two benchmark values which are relevant to this testing are:

1. London Fire Brigade and Westminster Council specify that pavement lights should withstand a 75kN

Load which is equivalent to a tyre load of 833.3 kN/m2. Based on this requirement, our testing shows

a 33% safety margin over the specified requirement.

2. BS EN 1991-2:2003 however specifies the equivalent tyre loads for different vehicle classes. The

highest rated special vehicle class is SV196 which has an equivalent tyre load of 681.6 kN/m2. Based

on this requirement, our testing provides a 63% safety margin over the anticipated single tyre load.

Should your particular project have a loading requirement in excess of that stated above then please contact

us on 01422 399111 to discuss your requirements.

*For clear openings below 300mm a smaller platen size will be used

3. Technical painting Specification Hargreaves Foundry Pavement Lights are supplied with a 2-pack primer over the shot blasted substrate,

followed by a 2-pack epoxy top coat finish. Pavement Lights are supplied as standard in a BLACK MATT

finish.

Note: A wide range of colours are available, including most British Standards, RAL and special colours to

customer requirements.

3.1 Technical Data

2 Pack Epoxy Zinc Phosphate HB Primer A two-pack polyamide cured epoxy resin system containing anticorrosive and other carefully selected

pigments and extenders.

This minimises corrosion of the casting and is the minimum that we would recommend to protect the casting during transportation. The primer coating will be a minimum of 50 microns thick on all areas of the casting.

2 Pack Epoxy Solvent Based Finish A two-pack polyamide cured epoxy resin system

containing carefully selected pigments. It

provides outstanding adhesion, toughness and

durability and has a long life when exposed to

aggressive environments, with good resistance to

chemicals and polluted atmospheres (providing

the coating is fully cured before exposure). A

minimum dry film thickness of 50 microns is

applied to our castings

Single pack “touch up paint” Hargreaves Foundry Recommend that when ordering your pavement light(s), a tin of touch-up paint is also

ordered. This is used for rectifying small areas of the coating that may have been damaged during

installation.

It is also anticipated that the paint coating will become worn due to regular footfall during service and it is

likely that rusting of the casting surface will not become apparent. If however areas of rust begin to form

during service, these should be removed with a wire brush and re-coated accordingly.

4. Lenses and Blocks The pavement light frames are made primarily of recesses designed to take either glass lenses or ventilation

blocks. These can be selected by the customer at the time of ordering. All blocks are secured into the frame

with mastic and grout to prevent movement and leakage (see section 7 Installation Guidance).

4.1 Standard Glass Lens The block that is used most often is a standard glass lens. This

allows light to permeate straight down into a basement level

room. These simple glass blocks are very similar to those

traditionally used for this purpose and as the pavement light

frames have been designed to fit them, they guarantee a

good fit.

These are available in 2 standard sizes. Approximate overall

Dimensions (L x W x D) for these are:

Size 1: 100mm x 75mm x 20mm

Size 2: 100mm x 100mm x 20mm

If you require a different size please contact us as bespoke options are available.

4.2 Cast Iron Air Vent In some situations it may become necessary to provide

ventilation to below ground areas in addition to allowing natural

light to enter. In these cases a vent block can be used as an

option for some recesses within the pavement light casting in

place of the glass blocks.

If these vents are required, it should be noted that some form of

catchment must be provided below them to collect any

rainwater, debris or other detritus which may fall through the

vent holes. This should be designed by the consultant/contractor

to suit the particular requirements of each project. Each vent block consists of six openings, each

surrounded by a raised lip to reduce the ingress of water and to form part of the raised anti-slip features.

Approximate overall dimensions for the air vent block are 100mm x 75mm x 20mm (L x W x D). Other sizes

can be manufactured, please contact us for more details.

5. Thermal properties With the advent of super insulated housing and stricter building regulations relating to the thermal

properties of buildings, it is important to understand the behaviour of each and every component involved in

a build. Thermal efficiency of a product or project is indicated by its U-value. This gives an insulation of the

thermally resistive properties of the material. When Insulation is a factor, a low value is regarded more

positively than a higher value.

Cast Iron as a material does not form a thermally efficient product and has a typical U-Value in the range

6.4-6.9 w/m2K. If thermal efficiency is of particular importance for a project, it is suggested that a

secondary glazing unit be obtained and installed beneath the pavement light unit. This will preserve the

external, traditional appearance while increasing the thermal resistance of the area of the building. It is

however important to ensure that access to the underside of the pavement light unit is still possible to

permit ongoing cleaning and maintenance to take place.

6. Basement Illumination It is generally accepted that the presence of natural light within a room, enhances the appearance of the

space while also improving the mood and wellbeing of those using it. Due to its inherent structural

properties, Cast Iron permits a much greater level of natural illuminance than Pavement Lights made from

some other materials. As shown in the table below, Hargreaves Foundry cast iron pavement lights have a

much higher percentage of visible glass than on comparable concrete versions.

Visible glass on upper surface Visible glass on lower surface

Hargreaves Foundry cast iron pavement lights

72-76%* 43-50%*

Typical concrete pavement lights

40-45% 22-26%

Table showing percentages of visible glass to total area of pavement light unit.

*percentage variance depends upon glass block used

The load bearing abilities of cast iron provides the opportunity to reduce pavement light section depth. This

means that a greater proportion of light approaching the pavement light at an oblique angle can pass

unhindered by the frame and be distributed throughout the space below the pavement light unit.

Testing undertaken by our Technical team have shown that natural illumination below our pavement light

units is variable depending on external light conditions. The table below outlines a comparison between

Hargreaves Foundry Illuminance readings taken 750mm below our pavement lights with values taken from

the UK Health & Safety Executive document HSG38 (Lighting at work).

Activity Typical Location Average

Illuminance (lux) Minimum

Illuminance (lux)

Overcast day with Pavement

light in part shade (lux)

Sunny day with thin cloud cover

(lux)

Movement of people, machines

& vehicles

Lorry park, circulation routes

20 5

Movement of people, machines

and vehicles in hazardous areas; rough work not requiring any perception of

detail

Construction site clearance,

excavation and soil work, loading bays, bottling and

canning plants

50 20

Work requiring limited perception

of detail

Kitchens, factories

assembling large components,

potteries

100 50

Work requiring perception of

detail

Offices, sheet metal work, book

binding 200 100 Average 116

Work requiring perception of fine

detail

Drawing offices, factories

assembling electronic

components, textile production

500 200 Average 3915

Table showing data from HSG38 (Lighting at work) [White background] and Hargreaves Foundry Illuminance

beneath Pavement Lights [Blue background]

7. Installation Guidance If you do not intend to install the

pavement light yourself we can offer an

installation service through approved

installers, please contact us for details.

When installing Hargreaves Cast Iron

Pavement Lights, it is important to ensure

that the opportunity for water to pool on

the surface is minimised. Pavement Light

units should therefore be installed where

possible with a slight fall to ensure water

runoff. In addition to this, the pavement

lights should not protrude from the surface

of the surrounding pavement to prevent it

forming a trip hazard.

It is possible to install pavement lights on

any substrate provided it is stable,

structurally sound and able to support the

weight. To secure the Pavement Light unit

in place, a waterproof mortar bed needs to

be placed below the supporting areas of the casting. It is important to use some temporary supports in order

to prevent the mortar from sagging under the weight of the casting before it has had time to set.

All edges of the casting should then be sealed in place with either a hot or cold applied sealant such as

Bitumen, Mastic or suitable synthetic sealant. It is important that the unit should be tested for water

tightness at the end of installation to ensure the sealing process has been a success.

Due to the density of cast iron, Hargreaves Pavement Lights tend to be large, heavy and unwieldy and

present unique challenges during installation. Hargreaves Foundry would therefore recommend that

installation is undertaken by a specialist contractor who possess mechanical lifting equipment and have

experience in working with products such as these.

8. Bespoke products At Hargreaves Foundry we utilise our expert knowledge

and skills to create bespoke products that will meet

precisely a customer's requirements.

Pavement light units can be cast in any shape and

quantity which gives us the flexibility to create a

bespoke design (subject to specific loading

requirements) to fit the required space. We can

produce replicas of original designs if the project

needs this. Hargreaves Foundry are proud to offer a

design service to replicate any sample cast iron

pavement light unit and are proud to have taken part

in many restoration projects to date.

The advantage of this flexibility is that exceptions

would not have to be sought for new pavement light

designs as part of a listed building renovation nor

would any major compromise of an architect’s vision

have to be made.

Please contact our sales department on 01422 399111 for more information on how we can help with

your project’s design requirements

9. Stallboard Lights Stallboard lights are traditionally used in

conjunction with pavement lights where the level of

the basement comes above the level of the ground

outside the building. They provide a simple way to

allow more light into the basement area without

affecting the traditional appearance of a structure.

In a typical installation, a stallboard light would be

placed immediately adjacent to a pavement light to

give the appearance of a single, continuous unit.

Hargreaves Foundry Stallboard lights are cast in the same grade of Iron

as used for the Hargreaves Foundry Pavement Lights although the design

has been modified to reduce weight in the units. Hargreaves Stallboard

Lights can be manufactured using any of the standard glass blocks and

are also finished with the same Matt Black Epoxy coating as the

Hargreaves Pavement Lights.

It is traditional with many Stallboard lights that they come with an

opening section to allow ventilation. The mechanism used by Hargreaves

Foundry for this purpose allows the window to be easily opened and

closed as needed without the need for cumbersome ladders or poles.

Appendix A – Pavement Light Specification A1. Product – Hargreaves Foundry cast iron pavement Lights

A2. Standard – As there are no British, European, or International standards which directly cover Cast

Iron Pavement Lights, this specification should be used.

A3. Materials

A3.1 Cast Iron Frames – Cast as a single piece from grade EN-GJL-250

A3.2 Cast Iron Vent blocks – Cast as a single piece from grade EN-GJL-250

A3.3 Standard Lens – Hard soda lime (low iron content) Glass

A4. Design Load

A4.1 Design load - 100kN tested on 300 x 300mm test platen.

A4.2 Equivalent Tyre Load - 1111kN/m2

A5. Location Suitability – Hargreaves Foundry pavement Lights are suited for use in areas with

pedestrian and very light vehicle loading only. It is strongly advised that they not be emplaced in

areas with high vehicular traffic or where they may be subjected to uncommonly high loads

A6. Coatings

A6.1 Primer Coat – 2-pack epoxy zinc phosphate HB primer

A6.2 Finish Coat – Matt Black 2-pack epoxy solvent based finish

A7. Markings – All units are marked with the Hargreaves Foundry Ltd. Company logo incorporating a

unique reference number for the unit. Unless otherwise specified, all items come marked with the

Hargreaves Foundry Ltd. Company name on the surface along with the location of manufacture.

These markings are raised and form part of the anti-skid surface.

A8. Handling & transport –Handling and transportation should not be attempted without mechanical

assistance.

A9. Maintenance & Inspection – All Hargreaves Foundry cast iron pavement light units should be

subjected to a regular inspection to determine:

A9.1 Physical condition – regular observations should be made to ensure that no damage

has occurred to the casting due to excessive loading or other considerations. Should physical

damage be observed, advice should be sought from a specialist fabricator as to the repairs

required

A9.2 Surface condition – it is expected that over time, the factory applied coating will be

worn away by regular foot traffic. This traffic should also prevent the formation of harmful

surface corrosion. If the cast surface begins to show undesirable signs of corrosion then it

should be removed with a wire brush and recoated using a high quality, outdoor paint

suitable for use on metallic surfaces.

A10. Installation – should be carried out by an experienced installer in accordance with the advice

in section 7 of the Hargreaves Foundry cast iron pavement light brochure

Appendix B – Stallboard Specification B1 Product – Hargreaves Foundry cast iron stallboard lights

B2 Standard – As there are no British, European, or International standards which directly cover cast

iron stallboard lights, this specification should be used.

B3 Materials

B3.1. Cast Iron Frames – Cast as a single piece from grade EN-GJL-250

B3.2. Opening section – Cast as a single piece from grade EN-GJL-250

B3.3. Support Frame – Cast sides with mild steel horizontal bars

B3.4. Glass Lens – Hard soda lime (low iron content) Glass

B4 Fixing – Secured to sides of recess with 6 x M10 bolts. Securing points in the structure should be

designed based upon location & material.

B5 Location Suitability – Hargreaves Foundry stallboard lights are suited for use in buildings with a

semi-basement

B6 Coatings

B6.1. Primer Coat – 2-pack epoxy zinc phosphate HB primer

B6.2. Finish Coat – Matt Black 2-pack epoxy solvent based finish

B7 Markings – All units are marked with the Hargreaves Foundry Ltd. Company logo incorporating a

unique reference number for the unit. They may also have decorative markings as specified in the

design phase of the project.

B8 Handling & transport –Handling and transportation should not be attempted without mechanical

assistance.

B9 Maintenance & Inspection – All Hargreaves Foundry cast iron stallboard light units should be

subjected to a regular inspection to determine:

A9.3 Physical condition – regular observations should be made to ensure that no damage

has occurred to the casting. Should physical damage be observed, advice should be sought

from a specialist fabricator as to the repairs required

B9.1. Surface condition –If the cast surface begins to show signs of corrosion then it should

be removed with a wire brush and then a good, high quality, outdoor paint suitable for use on

metallic surfaces should be applied. It is advised that regular re-painting is undertaken to

ensure protection of the casting and to maintain its appearance.

B9.2. Mechanism operation – all components should move freely when operated. If undue

resistance is encountered, all moving components should be lubricated as required.

B10 Installation – should be carried out by an experienced installer.

Appendix C – Other Hargreaves Products

Bespoke Castings Hargreaves Foundry manufactures and supplies iron castings.

Cast iron products are proven to be versatile, durable and reliable. These

sustainable products continue to meet the changing demands of modern

industry.

Hargreaves Foundry has built a reputation over many years for quality

castings and reliable service based on manufacturing castings for the

engineering and machine tools industry, the construction industry,

architectural projects both modern and heritage and commissions for cutting

edge artists.

Lock Gates Based in Yorkshire, Hargreaves Lock Gates, design, manufacture

and install canal lock gates, tidal doors, sluice gates and foot

bridges in wood or wood & steel composite. Our team is made up

of experienced, skilled craftsmen who can manage an entire

project through from design and manufacture to installation and

commissioning.

Few can rival our experience and skills both in the workshop and

on site. We are FSC® and PEFC™ certified and can offer chain of

custody traceability via our approved suppliers. Our quality

systems can also ensure that where required by the customer,

timber can be purchased from other third party approved sources

Hargreaves Foundry Drainage Hargreaves Drainage is one of the country's leading

manufacturers and suppliers of cast iron drainage products.

These range from traditional rainwater and soil products

through to modern, socketless above and below ground

systems that are certified to international standards by both

the BBA and the BSI Kitemark. What sets us apart from

other suppliers is our ability to make bespoke items and

customised solutions in addition to our extensive standard

ranges.

Cast Iron is a sustainable material. Correctly installed cast

iron drainage systems can last in excess of 100 years with

minimal maintenance.