PERFECT SLABS www.perfectslabs.co.za perfectslabs@gmail.com Bernie de Klerk 071 622 99 33
WHAT ARE PRE-STRESSED HOLLOW CORE SLABS? Hollow core slabs are pre-stressed panels constructed with hollow cores running from end-to-end and reinforced with pre-stressed high-tensile steel wires. This combination of hollowcores, high-strength concrete and pre-stressing, results in a relatively light-weight durable and strong panel. APPLICATIONS FLOORS: - flooring of multi-storey structures - balconies - suspended floors in areas of unstable ground VERTICAL APPLICATION - walls for buildings - retaining walls OTHER - strongroom walls and roofs - permanent shuttering - sport stadium, walkways SERVICES OFFERED BY PERFECT SLABS - Assistance with planning of a layout - The design of the floor panels only, should the client not enjoy the services of an Engineer - the transportation of units to site - the installation of units, and final levelling thereof - grouting of joints ADVANTAGES OF USING PERFECT SLABS - No shuttering or supports are required (propping) - No storage space is required - No labour cost involved in the construction of the floors - No time delay involved in the reaction and dismantling of shuttering and props - No time delay while floors are cast and cure - No risk of poor workmanship, the incorrect placing of reinforcements, of varying concrete mixed or of poorly compacted concrete - No ceilings are required - Saving on the weight of the floor
COMPANY Perfect Slabs is a supplier of Elematic SA en Shukuma Flooring Systems. We satisfy the demand for high quality, reliable products that are available within short lead times in an industy there the demand for building products is almost insatiable and completion times are short. Our suppliers supply the latest available technology in precast concrete products and set a new benchmark for the industry. ELEMATIC SA was established in South Africa in 2005. Their production facility received ISO 9001 certification in 2009 and their product is SABS approved. SHUKUMA design their Concrete Hollowcore Units according to SANS 0100 and according to the requirements of each structure for which they will be utilised. PERFECT SLABS is therefore backed by extensive knowledge and experience.
SHUKUMA: STRUCTURAL DETAILS 120mm 150mm 200mm 250mm Available standard width: 1 200mm 1 200mm 1 200mm 1 200mm Non-standard widths: in 100mm increments up to 1 200mm Min. concrete strength at dimensioning: 35MPa 35MPa 35MPa 40MPa Min. concrete strength a 28 days: 50MPa 50MPa 50MPa 50MPa Suggested max. span / depth ration: L/50 L/50 L/50 L/50 Pre-stressings wire type: 5mm diameter triple indented low relaxation wire Pre-stressing strand type: 9.53mm diameter stabilised strand 12.5mm diameter stabilised strand Suggested bearings: on brickwork - 100mm on steel - 75mm on concrete - 75mm Fire rating: 1 hour standard. Higher ratings are possible SHUKUMA: WEIGHTS AND FINISHES WEIGHT (kg/m²) 120mm 150mm 200mm 250mm Slab only 240 275 329 386 Slab and joint 255 292 351 411 Slab, joint and 30mm levelling screed 330 367 426 486 SHUKUMA: 120mm DEEP SLABS Standard wiring patterns: A 8 x 5mm wires B 12 x 5mm wires C 9 x 5mm wires + 3 x 9.53mm stand D 7 x 5mm wires + 5 x 9.53mm strand Load Capacity Table Live Load kn/m² A Span (m) B Span (m) C Span (m) D Span (m) 0.75 4.50 5.50 6.00 6.30 1.50 4.20 5.10 5.50 5.80 2.50 3.80 4.60 5.00 5.30 4.00 3.40 4.10 4.50 4.70 5.00 3.20 3.90 4.20 4.40 7.50 2.80 3.40 3.70 3.90 10.00 2.50 3.00 3.40 3.50
SHUKUMA: 150mm DEEP SLABS Standard wiring patterns: A 8 x 5mm wires B 12 x 5mm wires C 9 x 5mm wires + 3 x 9.53mm stand D 7 x 5mm wires + 5 x 9.53mm strand E 4 x 5mm wires + 8 x 9.53mm strand F 12 x 9.53mm stand (over 7m span = 2 x 5mm top wire) Load Capacity Table Live Load kn/m² A Span (m) B Span (m) C Span (m) D Span (m) E Span (m) F Span (m) 0.75 5.10 6.30 7.00 7.30 7.80 8.30 1.50 4.70 5.80 6.40 6.70 7.10 7.60 2.50 4.30 5.30 5.90 6.20 6.60 7.00 4.00 3.90 4.70 5.30 5.60 5.90 6.30 5.00 3.60 4.40 5.00 5.30 5.60 5.90 7.50 3.20 3.90 4.40 4.60 4.90 5.20 10.00 2.90 3.50 4.00 4.20 4.50 4.70 SHUKUMA: 200mm DEEP SLABS Standard wiring patterns: A 8 x 5mm wires B 12 x 5mm wires C 9 x 5mm wires + 3 x 9.53mm stand D 7 x 5mm wires + 5 x 9.53mm strand E 4 x 5mm wires + 8 x 9.53mm strand (over 8m span - 2 x 5mm top wire) F 12 x 9.53mm stand (over 6m span - 2 x 5mm top wire) Load Capacity Table Live Load kn/m² A Span (m) B Span (m) C Span (m) D Span (m) E Span (m) F Span (m) 0.75 5.80 7.20 8.20 8.70 9.20 9.80 1.50 5.40 6.60 7.70 8.00 8.50 9.10 2.50 5.00 6.10 7.00 7.40 7.90 8.40 4.00 4.50 5.50 6.30 6.80 7.20 7.60 5.00 4.20 5.20 6.00 6.40 6.80 7.20 7.50 3.70 4.60 5.30 5.70 6.00 6.40 10.00 3.40 4.10 4.80 5.20 5.50 5.80
SHUKUMA: 250mm DEEP SLABS Standard wiring patterns: G 10 X 9.53mm strand (over8m span = 2 x 5mm top wire) H+2 9 x 9.53mm strand + 3 x 12.55mm strand + 2 x 5mm wires - top (over 9m span - 2 x additional x 5mm top wire) J+4 4 x 9.53mm strand + 8 x 12.5mm strand + 4 x 5mm wires - top Load Capacity Table Live Load kn/m² G Span (m) H+2 Span (m) J+4 Span (m) 0.75 11.40 12.60 13.30 1.50 10.50 11.80 12.50 2.50 9.80 10.90 11.60 4.00 8.90 9.90 10.60 5.00 8.40 9.40 10.10 7.50 7.50 8.30 8.90 10.00 6.90 7.70 8.20
ELEMATIC: STRUCTURAL DETAILS 150mm 200mm 250mm Standard widths 1200mm 1200mm 1200mm Density 2500Kg/m³ 2500Kg/m³ 2500Kg/m³ Areas of cross section 0.0997m² 0.1226m² 0.1499m² Theoretical weight of slab 2.3KN/m² 2.7KN/m² 3.3KN/m² Min concrete strength when dimensioning 30Mpa 30Mpa 30Mpa Concrete Strength at 28 days 50Mpa+ 50Mpa+ 50Mpa+ Prestressing strand types used Accepted bearing tolerance Suggested max Span / Depth Fire rating: 9.3mm and 12.5mm stabilized strand On brickwork = 100mm On concrete = 75mm On steel = 75mm Ratio: L/50 1 hour standard, higher ratings can be achieved ELEMATIC: 150mm DEEP SLABS
ELEMATIC: 200mm DEEP SLABS ELEMATIC: 250mm DEEP SLABS
PERFECT SLABS PRICE INCLUDES RIB & BLOCK PRICE INCLUDES - A detailed floor layout drawing - A detailed layout drawing - Design and engineer's certification - Design and engineer's certification - A site visit to confirm access, readiness - Delivery to site of materials supplied and conformity to drawings according to the dimensions given on the - "As built" site measurements architectural drawing - Manufactured panels to suit "as built" TOTAL COST dimensions - Delivery to site RIB & BLOCK EXCLUDES FOLLOWING - Installation by means of a mobile crane - Carrying and installing heavy - Alignment and levelling of the panels materials - Placing of minimal props where requires - Hiring and placing many props - Grouting between the longitudinal - Placing the reinforcing and joints of the panels mesh in accordance to the TOTAL COST engineer's design - "Wait" for the engineer to PERFECT SLABS Price EXCLUDES check the accuracy and stability - Grouting materials of installation - Screeding or concrete topping - Calculating m³ of concrete & - Mesh in screed (if specified) arranging delivery of readymix - Finishing of soffit joint and painting or, mixing the concrete on site with a texture paint (All according to the concrete TOTAL COST PERFECT SLABS vs. RIB & BLOCK strength specified) - Hiring a concrete pump - Pumping of placing the concrete manually - Hiring a power-floating machine - Power-floating the concrete - Return of the power-floating machine - Leaving propped for 21 days - Return of props - Screeding the slab (if not power-floated) - Plastering the ceiling - Painting the celling TOTAL COST
SOFFIT