Precast Hollowcore Brochure

THE CORE OF THE MATTER

High quality, durable floor

solutions.

PRECAST HOLLOWCOREFLOOR SOLUTIONS

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THE ADVANTAGES OF PRECAST PRESTRESSEDHOLLOWCORE FLOORS

�� Factory cast by machine - off site� � � � � Rapid site construction - reduces site work� � � � � No propping required - clear uninterrupted work areas� � � � � Efficient lightweight sections - spans up to 18 metres� � � � � Design flexibility - all services can be located within cores� � � � � Durability - manufactured to AS 3600� � � � � Insulation - excellent Fire and Sound Resistance qualities� � � � � Quality - manufactured to AS/NZS 9001:2000


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HIGH QUALITY DURABLE FLOORSOLUTIONSPRECAST HOLLOWCORE high quality floorsolutions represent the fastest, most economicaland most efficient way of installing floors and theyguarantee extremely reliable quality for end users.

PRECAST HOLLOWCORE products helpshorten construction schedules due to their rapidinstallation, the possible absence of any need forfurther finishing and the fact that the floors arethen immediately ready for use.

Another advantage is their relatively large spans,which allow the number of support points to bereduced. This yields optimal design flexibility.

ADDED VALUE FROM SERVICE ANDTECHNICAL SUPPORTIt is important to emphasise the fact thatPRECAST HOLLOWCORE not only sells floorslabs but also provides solutions. Technical adviceand faultless service form an integral part of theextended range of floor solutions and otherproducts that PRECAST HOLLOWCOREoffers to its customers and specifiers.

Hollow core floors are used in all types of publicbuildings, industrial buildings, parkingstructures, apartments and in single familydwellings. Slabs for industrial buildings have spanloads up to 18 metres. Thickness of the slab canvary from 200 to 400 mm.

The prestressed hollow core floor slab has aguaranteed quality due to continuous in-factoryprocess controls complying withAS/ANZ 9001:2000 requisites.

INDUSTRIAL BUILDINGS

APARTMENT BUILDINGS


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4035

125

1197

200

ALLOWABLE SUPERIMPOSED LOADS (KN/m2 ) 200x1200x6 core floor panel.

Self Weight 372 kg/Lin.mSelf Weight 310 kg/m2

Cross Section Area 151980 mm2

Specific Gravity 2450 kg/m3

Percentage of Concrete 65.50 %

Concrete f’c50 MPa at 28 days25 MPa at transfer• FRL 90 has 35 mm cover to strand• FRL 150 has 45 mm cover to strand• Other strand configurations are possible

200 LOAD TABLES

Allo

wab

le li

ve lo

adin

g (k

Pa)

Legend: Shear governs Deflection exceeds L/250


200 Hollowcore

0.0

5.0

10.0

15.0

20.0

25.0

30.0

35.0

40.0

5 6 7 8 9 10 11 12

Span (m)

Allo

wab

le li

ve lo

adin

g (k

Pa)

5/12.7 untopped

5/12.7 topped

7/12.7untopped

7/12.7 topped

Span (m)

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200 Hollowcore

0.0

5.0

10.0

15.0

20.0

25.0

30.0

35.0

40.0

5 6 7 8 9 10 11 12

Allo

wab

le li

ve lo

adin

g (k

Pa)

5/12.7 untopped

5/12.7 topped

7/12.7 untopped

7/12.7 topped

Span (m)

Hollowcore slabs

200x1200 6 core floor panel untopped

Strand pattern FRL Ultimate capacities Allowable live load (kPa)minutes Phi.Mu Phi.Vu Span (m)

kNm kN 4 5 6 7 8 9 10 11

5/12.7 90 104.6 73.7 19.9 15.0 10.5 7.0 4.8 3.3 2.2 1.3150 97.3 68.3 18.0 13.6 9.5 6.3 4.2 2.8 1.8

7/12.7 90 140.1 89.5 24.7 18.8 14.8 10.3 7.3 5.2 3.8 2.7150 129.9 82.5 22.2 16.9 13.5 9.3 6.5 4.6 3.3

200x1200 6 core floor panel with 75 mm topping, N32


kNm kN 4 5 6 7 8 9 10 11

5/12.7 90 154.3 98.7 25.7 19.2 15.0 9.9 6.6 4.4150 147.0 91.9 23.5 17.5 13.7 9.2 6.1 4.0

7/12.7 90 206.7 124.1 33.4 25.2 20.0 15.1 10.6 7.5 5.3 3.7150 196.5 115.1 30.5 23.0 18.2 13.7 9.6 6.7 4.7

Notes: Legend:

snrevog raehSsyad 82 taaPM05c'f etercnoC052/L sdeecxe noitcelfeDrefsnart taaPM52

FRL 90 has 35 mm cover to strandFRL 150 has 45 mm cover to strandOther strand configurations are possible

Hollowcore slabs

200x1200 6 core floor panel untopped


kNm kN 4 5 6 7 8 9 10 11

5/12.7 90 104.6 73.7 19.9 15.0 10.5 7.0 4.8 3.3 2.2 1.3150 97.3 68.3 18.0 13.6 9.5 6.3 4.2 2.8 1.8

7/12.7 90 140.1 89.5 24.7 18.8 14.8 10.3 7.3 5.2 3.8 2.7150 129.9 82.5 22.2 16.9 13.5 9.3 6.5 4.6 3.3

200x1200 6 core floor panel with 75 mm topping, N32


kNm kN 4 5 6 7 8 9 10 11

5/12.7 90 154.3 98.7 25.7 19.2 15.0 9.9 6.6 4.4150 147.0 91.9 23.5 17.5 13.7 9.2 6.1 4.0

7/12.7 90 206.7 124.1 33.4 25.2 20.0 15.1 10.6 7.5 5.3 3.7150 196.5 115.1 30.5 23.0 18.2 13.7 9.6 6.7 4.7

Notes: Legend:

snrevog raehSsyad 82 taaPM05c'f etercnoC052/L sdeecxe noitcelfeDrefsnart taaPM52

FRL 90 has 35 mm cover to strandFRL 150 has 45 mm cover to strandOther strand configurations are possible

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ALLOWABLE SUPERIMPOSED LOADS (KN/m2 ) 300x1200x6 core floor panel

4035

225

1197

300

Self Weight 465 kg/Lin.m

Self Weight 380 kg/m2




Concrete f’c

50 MPa at 28 days

30 MPa at transfer

• FRL 90 has 35 mm cover to strand


• Other strand configurations are possible

• 11 and 14 strand units have 2/9.3 dia strands top

• Seek design advice for loadings higher than 50 kPa

Allo

wab

le li

ve lo

adin

g (k

Pa)



300 LOAD TABLES

300 Hollowcore

0.0

5.0

10.0

15.0

20.0

25.0

30.0

35.0

40.0

45.0

50.0

5 6 7 8 9 10 11 12 13 14 15

Span (m)

7/12.7 untopped

7/12.7 topped

9/12.7 untopped

9/12.7 topped

11/12.7 untopped

11/12.7 topped

14/12.7 untopped

14/12.7 topped

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ALLOWABLE SUPERIMPOSED LOADS (KN/m2 ) 400x1200x6 core floor panel.

3532

5

1197

400

40


400 LOAD TABLES

Self Weight 548 kg/Lin.m

Self Weight 458 kg/m2




Concrete f’c

50 MPa at 28 days

30 MPa at transfer



• Other strand configurations are possible

• 11 and 14 strand units have 2/9.3 dia strands top

• Seek design advice for loadings higher than 50 kPa

Allo

wab

le li

ve lo

adin

g (k

Pa)



400 Hollowcore

0.0

5.0

10.0

15.0

20.0

25.0

30.0

35.0

40.0

45.0

50.0

8 10 12 14 16 18 20

Span (m)

9/12.7 untopped

9/12.7 topped

11/12.7 untopped

11/12.7 topped

14/12.7 untopped

14/12.7 topped

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High quality, durable floor solutions.

CONCRETE BEARING SUPPORT DETAILS


EXTERNAL CONCRETE BEAM DETAIL INTERNAL CONCRETE BEAM/COLUMNINTERSECTION DETAIL

EXTERNAL CONCRETE WALL DETAIL INTERNAL CONCRETE LOAD BEARING WALLDETAIL

INTERNAL CONCRETE BEAM DETAIL ALTERNATIVE INTERNAL CONCRETE BEAMDETAIL

BEARINGS: Precast Hollowcore planks should have a minimum bearing of at least75mm on steel or concrete and 100mm on masonry supports.

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HANGERSFixings and support hangers should be installed strictly in accordance with the supplier’sdirections. Where heavy loads are to be supported, through-bolts to a distribution plate orbeam may be required. These are required to be in accordance with the design engineer’sspecification.


MASONRY BEARING SUPPORT DETAILS


STEEL BEARING SUPPORT DETAILS

EXTERNAL STEEL BEAM DETAIL INTERNAL STEEL BEAM DETAIL

EXTERNAL MASONRY CAVITY WALL DETAIL INTERNAL MASONRY LOADBEARING WALLDETAIL

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Typical Header Arrangement

Penetration Positions

PENETRATIONSPenetrations and block-outs in planks should not cut through the strand unless this has beenallowed for in the design. Any coring on site should be restricted to defined parts of members.Where large penetrations are required full width headers may be used to support the end of a plankand transfer the load to adjacent planks. These planks must be designed for the additional load.


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PRECAST HOLLOWCORE PTY LTDOffice: 77 Cobalt Street, Carole Park. Qld 4300 Postal: P O Box 331 Goodna, Qld. Australia 4300

TEL: (07) 3271 2766 Fax: (07) 3271 3946 Email: [email protected] www.precast.com.au


PRECAST HOLLOWCOREFLOOR SOLUTIONS CORPORATE MEMBER N P C A A

The information contained within this brochure is intended only for preliminary design. Precast Hollowcore disclaims all liability for loss or damage where product information contained within this brochure is used withoutobtaining qualified engineering design for the use in your specific application.

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Precast Hollowcore Brochure