national office of raw materials of pre-stressing systems .llc

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National Office of Raw Materials of Pre-stressing Systems .LLC www.noorprestressing.com

http://www.noorprestressing.com/

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NOOR PRE-STRESSING LLC. www.noorprestressing.com

NOOR-National Office of Raw Materials of Pre-stressing Systems. LLC – USA

Middle East OfficeTel: +971.6745.2732Fax: +971.6745.2738

P.O.Box:46480, Sharjah UAE&

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If you go for RC work, you may be using a lot of steel but if you go for PT work, you will save a lot on steel which will directly reduce your cost.How ?More Steel = High Cost and Less Steel = Low Cost.

For example: In RC work 1 M3 = 150 kg steel and steel per kg is 2.7AED.So cost of steel for 1 M3 =150 kg * 2.7 approx = 405 AED

But in PT work 1 M3 = 50kg steel ,so cost of steel for 1M3 = 50kg *2.7 approx AED= 135 AED

So the difference of cost between both is AED 405-135 =270 AED which you will be saving.The PT work cost’s around 180 AED approx

Now for PT work the amount you will spend for 1 M3 will be 135 + 180 =315 AED

And after paying for PT work you will still save 270- 180 = 90 AED approx

COST SAVING BUDGET IF YOU GO TO PT WORK

INSTEAD OF RC WORK


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NOOR systems includes the materials mentioned below.

• Anchors Set S/3 • Anchors Set S/5• Wedges• NOOR-G Chemicals• Galvanized Spiral Ducts• PC Strands

These all materials are of a very high standard and quality.

AL NOOR PRE-STRESSNG CONCERET L.L.C www.noorprestressing.com


NOOR SYSTEMS

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Flat anchorage PT System

Live End Anchorage System

NOOR is a flat-anchorage post-tensioning system using 1 to 5 seven-wire pre-stressing strands. The pre-stressing strands have a nominal diameter / nominal cross section of 12.7 mm / 100 mm2, 15.3 mm / 140mm2 or 15.7 mm / 150mm2 and a maximum characteristic tensile strength of 1960 MPA. The available anchorages are the stressing or active anchorages (Type A), the fixed or passive anchorages (Type F) and fixed as well as movable couplers (Type K). The tendon sheaths are corrugated steel ducts or PT plastic ducts, which are injected with a high performance groutThe life end anchorage system is normally adopted for bonded tendon. The strands are individually gripped in one slab anchor head unit and transmit their pre-stressing forces by means of slab type anchor plate casting unit. The strands are stressed individually by means of a mono strand jack. The strands are contained in one flat duct which is made of corrugated galvanized or non-galvanized metal. To ensure corrosion protection and to give adequate bond strength, the tendons are filled with suitable cement grout mix after complete stressing of the strand



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WEDGES

A wedge assembly typically has 2 or 3 part wedges with a spring wire retainer clip in a groove around the thick end. It is placed around a strand to grip and secure it by wedge action in a tapered hole through a barrel. Available in two nominal sizes,12.7mm (0.5in) and 15.2mm (0.6in) diameter.Each individual wedge segment is examined for exact tooth shape by computer cameras. Anchor barrels are manufactured from high tensile crack-tested basic material in a special process, and are only stamped and released for dispatch after final ultrasonic testing. In this way, we ensure the highest industrial safety and long life service of the anchor components


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R82 Galvanized Metal Corrugated Duct - ASTM A653

NOOR Galvanized Spiral Metal Duct or High Density Polyethylene Duct meets all physical and structural recommendations for post tensioning duct as laid down by the Post Tensioning Institute (of the United States). The Duct is available in 2”, 3”, and 4” diameter with couplings and reducer couplings for all sizes.

R75 Polypropylene & Polyethylene Corrugated Duct

The stable characteristics of NOOR polypropylene & polyethylene duct are normally preferred where additional corrosion protection is desirable. Polypropylene Duct has been approved by the Florida DOT for internal tendons and is available in 2-3/8” diameter. Polyethylene Duct is available in 2”, 3”, and 4” diameter. Couplings and reducer couplings are available for all sizes.

TypeTendon unit h H b B S

Plastic duct PT-PLUS 5-2,6-2 0.75 1.18 1.65 2.09 0.08

Plastic duct PT-PLUS 5-4,6-4 0.83 1.38 2.83 3.39 0.08

Steel duct 5-4,6-4 0.71 0.83 2.83 2.95 0.01



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Compressive Strength (70° F Dry Environment) 0.4 w/c Ratio

Expansive agent for the production of shrinkage-compensating and high strength concrete

NOOR-G is an inorganic product in powder form to be used in addition to the other components of concrete for producing shrinkage compensating and high strength concrete. It is a special clinker, burnt at high temperature, rich in free lime and whose minor compounds are calcium silicates, aluminates, Ferro-aluminates and sulphates.

The use of super plasticizers is particularly recommended when using NOOR - G as they significantly reduce the water content and thus the potential shrinkage of the concrete to be compensated.

Time PSI MPa

1 Day 1,800 12.4

3 Days 4,000 27.5

7 Days 6,000 41.4

AL NOOR PRE-STRESSNG CONCERET L.L.C www.noorprestressing.comNOOR PRE-STRESSING LLC.

www.noorprestressing.comNOOR-G CHEMICAL

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• Tanks• Reservoirs and swimming-pools• Water treatment plants• Containers for liquids and/or gases• Pre-stressed circular structures• Sewers, tunnels and canals• Injections for sealing of concrete elements• Reinforced & Pre-stressed Concrete Structures• Long structures• Thin solid structures• Pre-stressed concrete beams• Annular beams for sports facilities• Bridge decks• Filling of cavities• Industrial floors• Weakly reinforced hyperstatic structures• Shields for nuclear plants• Road and railway tunnel vaults• Foundations and underpinnings• Hyperstatic arc-bridges• Box culverts, domes and thin structures in reinforced concrete• Roofs and covers in architectural concrete Prefabrications• Repairs of vertical structures and loaded pillar• Rock consolidation Product Advantage

NOOR - G reduces the drying shrinkage of concrete by reducing the capillary tension of the pore water in concrete. • Reductions in drying shrinkage of up to 50% have been obtained. The benefits derived from the reduction in drying shrinkage include:• Dramatic reduction in crack occurrence caused by drying shrinkage• Increased joint spacing in concrete pavements and slab-on-ground• Improved concrete durability• Longer service life• High impermeability and strength, anti-crack and freeze-thaw resistance concrete Excellent for pumping: Does not segregate...even at high flow. No build-up on equipment hopper. Non-corrosive , does not contain chlorides. Meets CRD C-621. Meets ASTM C-1107 (Grade C). Shows positive expansion when tested in accordance with ASTM C-827.

USAGENOOR PRE-STRESSING LLC. www.noorprestressing.com

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Post-tension (PT) strands are manufactured in accordance to the standard American Society for Testing and Materials (ASTM) A416. It is composed of seven treated carbon steel wires, six of which are arranged in a helical pattern around a slightly larger center wire (Figure 3.1). PT strand is available in several diameters ranging from .250 in. to .600 in. For most post-tensioning applications, the standard size strand is either the .500 in. or .600 in diameter (ASTM). Breaking strength requirements and yield strength requirements are shown in Table Mainly used as auxiliary reinforcing tendon for concrete structure such as Pre-stressed concrete girders for railway &highway bridges and flyovers, rock and earth anchoring construction, and multi-floor high rise buildings.

Strand Diameter (in.) .500 .600

Min. Breaking Strength, TU (kips) 41.3 58.6

Steel Area (in2) .153 .217

Strand Weight (lb/ft) .520 .740

Min. Yield Strength, 1% Elongation, TY (kips) 37.17 52.74

PC STRANDSNOOR PRE-STRESSING LLC. www.noorprestressing.com

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Approved Foundation Construction - Post-tensioned slabs are approved by the F.H.A. and V.A. since 1967. All National Building codes approved post-tensioning. Current IBC / IRC indicates that in expansive soils with the Plasticity Index greater than 15, requires that the foundation system be designed according to WRI /CRSI (Wire Reinforcement - Concrete Reinforcing Institute) or PTI (Post-Tension Institute) Control of Cracks – Post-tensioned slabs control cracks much better than other reinforced slabs, due to the squeezing pressure (tension) of the cables compressing the cracks.

Time Savings - Post -tensioned can be installed much faster that other reinforced foundation systems. A typical residential foundation takes 3-4 hours to install. Time is also saved by, using fewer joints, narrower footings, less digging, and easier to clean up in the event of inclement weather.

Reinforcing Savings - As steel and concrete increase in pricing, the savings with a post- tensioned slab will increase, because the quantity of steel and concrete required for a post-tensioned slab is less than for a conventionally reinforced foundation. Clean out of the footings after a rain is much faster and neater than re-bar type foundations. Engineered Foundations - The F.H.A., V.A. IBC and IRC accept post-tensioning, but it must be engineered and stamped by a licensed engineer.

Facts about Post-Tensioned Slabs:AL NOOR PRE-STRESSNG CONCERET L.L.C www.noorprestressing.com


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Fewer Joints - Large concrete areas, such as tennis courts, parking lots, warehouses, metal buildings can have joint spacing increased to minimize cost of joints and long- term maintenance of the joints.

Deflection Control - Expansive soils, which can move when wet and shrink when drying can cause foundation movements and cracking. Post- tensioning increases the slab stiffness and by its increased flexural and tensile capacities, is more resistant to problematic soils. Movement of soils can sometimes be significant enough to move the structure. Slab on ground support foundation systems are still interactive with the soil. Improved Modulus of Rupture – It is a fact that concrete shrinks when it dries and cracks. By utilizing a two part tensioning process, shrinkage cracking can be reduced.

Possible Less Concrete - (This depends on the foundation and what it is being compared to.) Typical post- tension beams (ribs) are 12 inches wide versus 16 inches wide for conventional. For an equivalent slab design, (stiffness) post-tensioning will require less concrete. Improved Flatness and Slab Levelness - With fewer joints and greater joint spacing, slab curling is greatly reduced. This produces a smoother ride for forklifts.

NOOR PRE-STRESSING LLC. www.noorprestressing.com Facts about Post-Tensioned Slabs:

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Why Go for Al Noor Pre-Stressing

• Al Noor Pre-Stressing does not compromise on its quality right from the labours, foremans, engineers and even the materials & equipments.

• We believe that a trust and understanding between us and our customer makes a strong and everlasting bonding

• And last but not the least work taken by us is completed on time from our end.

• These are the strong points that makes our customers choose Al Noor Pre-Stressing.



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Headquarter Office:

1133 Broadway, Suite 706, New York, NY10010, USA. +1 (212) 631 5819 Phone +1 (212) 631 5820 Fax

Middle East Office:

Sharjah - Abu Sheghara - UAE.PO.Box: 46480+9716 575 8987 Phone+9716 575 8487 Fax

For all other general queries [email protected]

mailto:[email protected]

national office of raw materials of pre-stressing systems .llc

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