A quarrier and supplier of natural Mount Gambier limestone that off ers high thermal and acoustic qualities at incredibly prices.

www.bruhn.com.au

About BRUHN

• BRUHN Limestone quarries and supplies Premium Plainface, Premium Rockface and Bevel edge blocks at various sizes. These blocks are complimented by a large range of decorative mouldings that will support any architectural design.

• BRUHN Limestone is the only second strata Limestone quarry and off ers a unique blend of cream and sandstone colours. This variation in colour is derived by natural fault lines within the quarry and is unique to the Bruhn quarry.

• BRUHN Limestone has high insulating and acoustic properties that will ensure all projects are energy conscious and support government green star ratings.

• BRUHN Limestone is cut with small mobile cutting saws minimising carbon emissions and off ering low embodied energy ratings.

BRUHN Limestone is a family owned business that has quarried Mount Gambier Limestone for over 70 years spanning three generations.

About Mount Gambier Limestone Contents

Products 3

National Stone Sizes 3

Product Range 4

Environmental Specifi cations 6

Delivery and Service 8

Product Information 8

Q & A on Limestone 9

Contact Information 9

Mt Gambier Limestone (fossiliferous limestone) is located and quarried from the Marte deposits, 10 km west of Mount Gambier in the South-East of South Australia.

The stone originated from extensive colonies of bryozoa (or lace coral) that fl ourished on an open-marine shelf formed over 30 million years ago.

Its composition consists of bryozoa, foraminifea and echinoid spines and plates.

Limestone

Left: BRUHN stone used as a feature wall adds warmth and style to this contemporary home.Photo by Graham Sping

1

Create your dream home without compromise.

BRUHN Limestone produce a quality range of refi ned building stone which will allow you to have the fi nish you like for a price that is comparable to traditional building products.

2

National Stone Sizes

Rockface

240 x 660 x 100mm = 080 pieces = 13.33m2/pallet

Plain Face

240 x 660 x 100mm = 100 pieces = 16.67m2/pallet

240 x 660 x 110mm = 080 pieces = 13.33m2/pallet

240 x 660 x 120mm = 080 pieces = 13.33m2/pallet

240 x 660 x 150mm = 060 pieces = 10.00m2/pallet

240 x 660 x 240mm = 040 pieces

290 x 660 x 100mm = 080 pieces = 16.00m2/pallet

290 x 660 x 110mm = 064 pieces = 12.80m2/pallet

290 x 660 x 120mm = 064 pieces = 12.80m2/pallet

290 x 660 x 150mm = 048 pieces = 9.60m2/pallet

290 x 660 x 240mm = 032 pieces

290 x 590 x 100 B/Edge = 080 Pieces = 14.55m2/pallet

240 x 1320 x 100 Sills = 033 Pieces

290 x 1320 x 100 Sills = 033 Pieces

NOTE:

290 Course Height = 5.0 Ashlars/m2 wall area including mortar

240 Course Height = 6.0 Ashlars/m2 wall area including mortar

290 B/Edge = 5.5 Ashlars/m2 wall area including mortar

• All square meterage referred to include 10mm Mortar Joints

• Corbelling Shapes sold per lineal metre on request

• Special Frogged Ashlars are available for 5mm mortar joint fi nish

Products

BRUHN Limestone building products produce a range of Limestone products to suite a variety of building styles.

• Colour of stone varies in diff erent blends from light creams to rich sandstone colours.

• From the quarry ashlar blocks are cut at 660mm long and either 240mm or 290mm high.

• Width of blocks can vary from 100mm, 110mm, 120mm, 150mm or 240mm.

• Bevelled Corner stones at 240x580x120 and sills at 240x1320x100 are also available.

• These standard sized blocks are complimented with a host of moulds also produced by Bruhn Limestone.

• Variations to these sizes can be managed but will need to be negotiated with Bruhn Limestone re dimensions and time frames.

Bevel Edge Plain Face Rockface

Limestone 3

PlainfacePlainface limestone off ers a great solution for either a modern contemporary or classic looking fi nish.

RockfaceRockface fi nishes generally off er a traditional look but can also be used creatively in modern designs.

Bevel EdgeBevel Edge fi nishes promotes the stone beautifully with the bevel framing each individual piece.

Product Range All fi nishes can be supplied in either Cream or Sandstone colours.

4

Limestone Feature WallsWhen used internally BRUHN Limestone off ers a beautiful natural ambience, whether in Plainface or Rockface.

Limestone ColumnsBRUHN Limestone columns and decorative moulds ensure any architectural design can be achieved.

Limestone MouldingsProfi les

Limestone

Corbel Capping 120x660x240Pier Base Mould 290x660x240

Fluted Columns290x660x240

Internal Columns

Tapered Round Columns

Code Description

001 150x660x145

002 290 or 240x660x150

003 140x660x140

004 175x660x200

005 100x660x150

006 120x660x240

007 160x660x150

008 150x660x145

009 150x660x200

010 120x660x240

001

003

005

007

009

008

010

006

004

002

5

Embodied Energy RatingFor BRUHN Limestone - supplied by University of South Australia.

Embodied energy is the energy consumed by all of the processes associated with the production of a building, from the mining and processing of natural resources to manufacturing, transport an delivery of the product.

A comparison of the Embodied Energy of walling systems per square metre.

Thermal Conductivity RatingFor BRUHN Limestone - supplied by Curtin University.

• Thermal Conductivity (k) = 0.49 +/- 0.04 Wm-1K-1• *Thermal Resistance R @ 100mm = 0.20 +/-0.03 m2KW-1• (“R value”) R @ 120mm = 0.25• R @ 140mm = 0.29

• This report has been written and tests performed in accordance with AS/NZ 4859.1

• Measurement reference number 0091,0092,0093

• Calibration Reference material NIST SRM 1453

• Sample Bruhn Limestone, Second Strata

• Metering Area (A) = 0.038 m2

• Sample Thickness (t) = 49.3 +/-0.5mm

• Sample Density = 2360 +/-50kg/m3

• Temperature of cold plate (Tc) = 14.9 +/-0.1 deg

• Temperature of hot plate (Th) = 32.6 +/-0.1 deg

• Temperature diff erence (Delta T) = 17.8 +/-0.2 deg

• Mean Temperature = 23.7 +/- 0.1 deg

• Power to hot plate (VI) = (18.61)*(0.714) watts

• Ambient Temperature = 21.0 deg

• Ambient Humidity = 45.2 %

• Date of measurement 20/5/05 - 26/5/05* As a comparison to other products as published by the Australian Institute90mm Brick 0.05 to 0.07

100mm Concrete Block 0.07300mm Mud Brick 0.27

Environmental Specifi cations

BRUHN has HIA Green Smart accredited personal.

Solid

Bluestone

‒

200m

m th

ick

Solid

Lim

estone

‒

100m

m th

ick

Blue

ston

e ve

neer ‒

200m

m th

ick tim

ber fram

e

Limestone

ven

eer ‒

100m

m th

ick tim

ber fram

e

Blue

ston

e ve

neer ‒

200m

m th

ick stee

l frame

Limestone

ven

eer ‒

100m

m th

ick stee

l frame

Conc

rete AAC

Block

s ‒

200m

m th

ick

Brick ve

neer ‒

inc. timbe

r fram

e

Brick ve

neer ‒

inc. steel fr

ame

Dou

ble Br

ick

2000

1500

1000

500

0

Environmental Energy Comparison of Diff erent Materials

Em

bo

die

d E

ne

rgy

(MJ

/m2)

Material Selection EEC (MJ/kg) Material Intensity (kg/m2) EE (MJ/m2)

Solid Bluestone200mm thick 0.29 451.65 130.98

Solid Limestone100mm thick 0.64 216.00 138.24

Bluestone veneer200mm thick timber frame 0.29 (+22.16) 451.65 (+7.10) 291.51

Limestone veneer100mm thick timber frame 0.64 (+22.61) 216.00 (+7.10) 298.77

Bluestone veneer200mm thick steel frame 0.29 (+55.50) 451.65 (+8.20) 586.08

Limestone veneer100mm thick steel frame 0.64 (+55.50) 216.00 (+8.20) 593.34

Concrete AAC Blocks200mm thick 6.78 100.00 678.00

Brick veneerincluding timber frame 5.44 (+22.61) 176.00 (+7.10) 1117.97

Brick veneerincluding steel frame 5.44 (+55.50) 176.00 (+8.20) 1412.54

Double Brick 5.44 352.00 1914.88

BRUHN Limestone

Other building products

6

Airborne, Sound & Transmission LossTABLE 1

Specimen of a single-leaf wall built of Bruhn Quarry second strata sawn limestone blocks of nominal dimensions 660mm long x 290mm high x 120mm laid with mortar mix consisting of sand, lime and cement in the ratio of 6:1:1 by volume.

The mass per unit area of the wall was determined as: 152 kg/m2

Nominal thickness of wall: 120mm

Fire Resistance Ratings Deemed to apply to certain structural members

Limestone

One/Third-Octave Band Centre Frequency (Hz)

100 125 160

200 250 315

400 500 630

800 1000 1250

1600 2000 2500

3150 4000 5000

Airbourne Sound-Transmission Loss (dB)

32 32 31

32 33 32

35 36 39

43 44 47

50 52 54

57 57 58

A Sound Transmission Class (STC) of 42 was derived for the specimen from the sound-transmission loss values above, in accordance with the procedure specifi ed is AS 1276 ‒ 1979.

Column 1 Column 2 Column 3 Column 4 Column 5 Column 6 Column 7 Column 8

Structural Member Construction of MemberThickness of principal material (millimetres)

Annexure ref note number

1 hr 1 ½ hr 2 hr 3 hr 4 hr

Concrete

Un-reinforced 177 200

No lines, plastered 19 mm tick on both sides - - 150 - 6

Reinforced Refer to sub-regulation (1) of regulation 20.10

Pre-stressed Refer to sub-regulation (2) of regulation 20.10

Non-load bearing walls whether internal or external (except Common & Party walls)

Hollow blocks of concrete with

Category A aggregate 60 83 96 119 142 7.8

Category B aggregate 71 93 102 134 157 7.8

Category C aggregate 82 101 121 149 172 7.8

Terracotta

Plastered 19 mm thick 1 side 180 - - - - 6.9

Plastered 19 mm thick on both sides 100 150 - - - 6.9

Solid Gypsum perlite or gipsum-vermienlite plaster on metal lath and channels 51 63 - - - 10

Mount Gambier Stone Masonry 50 100 110 135 150 -

Steel columns including fabricated columns

Columns incorporated in or in contact on one or more sides with solid masonry or concrete walls not less than 100 mm thick, with fi re protection of Solid clay bricks with:

column spaces fi lled 50 50 50 50 63 11.12

column spaces not fi lled 50 50 50 - - 11.00

Gypsum blocks laid in gypsum sand mortar with - - 50 - - 9.11

column spaces fi lled - - 50 63 88 11.12

column spaces not fi lled - - 50 - - 11.00

Hollow terracotta blocks plastered with 13 mm thick with

column spaces fi lled - - 50 63 88 9.11

column spaces not fi lled - - 50 - - 9.11

Structural concrete cast in-situ around mesh or binding and non-load-bearing 25 32 38 51 63 11.12

7

Delivery and Service

• BRUHN Limestone is delivered on shrink wrapped strapped pallets directly to site.

• BRUHN Limestone ensures that all OH&S standards in accordance to loading and delivery are accredited and in accordance with government regulations.

• BRUHN Limestone is at the forefront of the industry when it comes to compliance with both the Occupational Health & Safety Act and the compliance & Enforcement Act.

• BRUHN Limestone has a licensed stone mason and builder on staff that can assist with all planning, technical and construction enquiries

Product Information

All stone supplied to the National market is from our second strata quarry.

All prices are GST inclusive and include delivery and unloading to site unless other wise stated.

Product Quotations are supplied as our guide only. All quantities should be checked by your builder prior to ordering. Surplus stone will not be accepted for credit or refund as all stone delivered to site will be accounted for.

Delivery is subject to reasonable access or an extra charge may apply.

It is advised that the stone should be sealed with an appropriate sealant. This sealant is delivered to site with the stone delivery and includes instructions for application.

All pricing is subject to Bruhn Limestone’s ‘Terms and Conditions’, with normal terms of payment for stone being by deposit on confi rmation of order. Deliveries prior to the fi nal delivery payable on 7 day invoice.

No claims against product will be recognised unless received within 7 days from delivery. Claims against faulty products will not be accepted once they have been laid.

It is recommended that orders be placed at least four weeks before requiring product to site. The exact delivery date should be checked after orders have been confi rmed with the deposit.

As the colour of mortar is very important to the end appearance of the stone, it is suggested that the client discuss this fully with their builder or mason. A separate instruction sheet on this point can be supplied on request.

PLEASE NOTE:

BRUHN Limestone is a natural product and colours may vary within the pallets and from pallet to pallet. Please ensure that all stone is cross-blended from the pallets during construction.

8

Contact InformationQ & A on Limestone

Limestone

BRUHN Limestone

Mail: PO Box 412Mount GambierSA 5290

Phone: (08) 8725 5333

Email: admin@bruhn.com.au

Website: www.bruhn.com.au

Disclaimer:Samples depicted in this brochure are for representational purposes. Colours will vary between the this brochure and the fi nal product. Consultation with a BRUHN representative is recommended before placing an order.For full product disclosure Terms and Conditions please visit our website.

Q Do you use the same mortar mix as brickwork?

A We recommend a white brickie sand mixed at 6 parts sand, 1 part off white cement and 1 part lime. We can also supply limestone dust that can be mixed 4 sand 2 dust that will help blend the colour of the mortar joint closer to the natural stone colour

Q Do I need to allow for diff erent type of foundations for limestone than brick?

A No construction with the stone is exactly like brick work, allow everything the same.

Q Do I need to put in expansion joints with stone?

A Limestone in its self has little expansion or contraction, however if building on unstable soil, the local authorities may require control joints put in as they expect some movement in the foundations.

Q Do I need a qualifi ed stonemason to lay the limestone or can any bricklayer do the job?

A We recommend that you use qualifi ed tradesman only, and we can supply a list of stonemasons in your area. We also off er onsite training for a bricklayer who is laying limestone for the fi rst time.

Q Is limestone recommended below ground level?

A We recommend that you do the build up to damp course level out of brick or block. This may require one or two courses of brickwork to slab height and can be rendered to the stone colour.

Q Does limestone need to be sealed?

A We recommend that this type of limestone be sealed. We supply a quality limestone sealer that will protect the stone for up to 7 ‒ 10 years.

Q What is the best way to attach carports or any other fi xtures to the limestone?

A Any fi xing into limestone need to be a plug and screw method or chemical fi xings like Chemsets. Do not use Dyna Bolts as if over tightened they will work loose over time.

Q What is the composition of the limestone sealant?

A Bruhn Rock seal is a water based Acrylic with a silicon additive. It is milky white liquid that has a very mild odour and is easy to use.

Q How is the rock seal applied and when does limestone need to be resealed?

A Sealant can be sprayed on using a painter’s airless spray gun applying two coats wet on wet or alternatively one heavy fl ood coat. Sealant process may need to repeated every 7 ‒ 10 years.

Q Can I specifi cally design my own decorative moulds?

A Bruhn supply a large range of standard moulds utilizing their own factory cutter heads. If a client wishes to use a certain design outside of this range there maybe an additional cost to the client for the design and purchase of the steel cutter heads required for the job.

Q How is the limestone delivered?

A Each pallet of stone is strapped and shrink wrapped for delivery direct to site by Bruhns own trucks and all terrain forklift for placement on site. This can vary however depending on site access.

Limestonewww.bruhn.com.au