A typical 8-inch thick hollowcore plank has a 2-hour fire rating. The planks are manufactured on 600-foot-long steel beds in standard widths of 48 inches and thickness of: 8, 10, 12 and 16 inches. Acoustical tests show ratings of STC 48 and NRC 55 for untopped floors. A hollow core slab, also known as a voided slab, hollow core plank or simply a concrete plank is a precast slab of prestressed concrete typically used in the construction of floors in multi-story apartment buildings. Figure 3 — Installation of Hilti HDI-P in hollow core concrete panels How much does concrete plank cost? In photo 1, the ends of the steel cable tendons are visible as dark dots near the bottom of each plank. The ROXBORO H has an open floor pla. : 7098. Creates multi-functional living and storage rooms. NiCore™ precast concrete floor and ceiling panels are manufactured on high-quality steel beds, providing an exceptionally smooth bottom surface. Precast Pre-stressed Load Bearing Concrete Hollow core slabs are used for Flooring & Roofing and have an advantage over equivalent in-situ floor as they are approximately 30% lighter (having continues Voids) with same load bearing capacity. (6.0 MB ZIP File --- 3.0 MB ZIP File) HC-1.0: Exterior Bearing Precast Wall-Wall. RELEASE - R3.0 SECTION 03 40 00 BART FACILITIES STANDARDS Issued: January 2013 PAGE 4 OF 8 STANDARD SPECIFICATIONS 176-180, 2017 Download PDF. Molin Concrete offers two types of Hollow Core plank: Flexicore and Extruded. Elematic®is a machine extruded, precast, prestressed hollow-core plank. Slabs are cut to length to assure dimensional accuracy and smooth end finish. The basis for this simple but effective solution is natural air pressure. HOLLOW CORE SLABS SECOND EDITION by Donald R. Buettner and Roger J. Becker Computerized Structural Design, S.C. Knightcore (Hollowcore) plank is a precast, prestressed, concrete plank manufactured by a precision, extrusion process, from zero slump concrete providing outstanding dimensional control and uniformity. Break Free Hollowcore Plank is unsurpassed for its ability to provide clear spans and open, column-free interior spaces. Precast Hollow Core Concrete Planks vs. Composite Slab 5.1 Problem Statement The structure for the Women's Center and Inpatient Tower is primarily a cast-in-place concrete system; however, part of the structural system is composed of structural steel framing with precast hollow core concrete panels. The production of hollow core slabs with Precast . Download DWG. PCI Recommended Hollowcore Details. PAROC Air keeps the roof structure dry without any mechanical systems. Each plank has a . 2 Minimum compressive strength of hollow core panels is 7,000 psi at the time of installation. Clean the hollow core surface of all laitance. 2 Minimum compressive strength of hollow core panels is 7,000 psi at the time of installation. We have expertly manufactured hollowcore concrete flooring solutions at our factory in Essex for over 70 years. Our 6″, 8″, 10″, and 12″ planks are extruded precast/prestressed hollow core 4′-0 wide slabs. Hollowcore plank concrete floor slabs are resistant to air-borne noise and transmission of impact noise and provide qualities superior to those of a solid concrete slab of equivalent thickness. For a higher rating (3- or 4- hour), typically a concrete (or gypsum based) topping would be applied or a spray-on fire resistant material can be added to the underside of the plank. Precast Pre-stressed Load Bearing Concrete Hollow core slabs are used for Flooring & Roofing and have an advantage over equivalent in-situ floor as they are approximately 30% lighter (having continues Voids) with same load bearing capacity. Zero-slump, high-strength concrete with a 28-day strength in excess of 8,000 psi and ½" diameter, 270 ksi, low relaxation steel strands are used in the process. Download DWG. This bundle contains all 32 PCI-recommended Hollowcore details. Materials alone cost about $4 per cubic foot. The slabs are typically 120 cm wide with standard thicknesses normally between 15 cm and 50 cm. Hollowcore slab has become an increasingly popular solution, and is commonly used in individual and public housing facilities, schools, hospitals, factories, business centers, retail centers, warehouse facilities, etc. Hollowcore Plank . Hollowcore works for you. Our precast hollowcore floors are available in sections 150, 200, 250 and 260mm deep. Hollow core slabs, or plank, are precast prestressed concrete components typically used as structural floor or roof deck systems in single and multi-story buildings. Hollowcore plank + 21/ 8" concrete topping has 3-hour fire rating. Effective roof insulation has three or four insulation layers. Solid Shear Wall Panels Primarily used for floors and roof decks, Hollow Core is a precast slab of prestressed concrete designed for greater structural efficiency. Why Hollow Core Slab / Planks / Wall Panels etc:-. HOLLOW CORE SLABS SECOND EDITION by Donald R. Buettner and Roger J. Becker Computerized Structural Design, S.C. Four-foot widths are standard but based on building layouts, narrower pieces (split pieces) can be accommodated. Learn More. Dream Bigger Hollowcore Plank is compatible with standard construction materials such as concrete, steel, and masonry to extend project possibilities. J. P. Carrara & Sons, Inc. is a third generation family owned and operated company that produces sand and stone aggregates, ready-mixed concrete, precast/pre-stressed concrete products, and has recently added construction and masonry products. Creates multi-functional living and storage rooms. Hollowcore systems are prestressed concrete plank that serve as both a readymade sub floor for a garage, and a ceiling for additional living areas. Hollow core slabs, or plank, are precast prestressed concrete components typically used as structural floor or roof deck systems in single and multi-story buildings. Five Major Advantages of Hollowcore Concrete Planking Hollowcore precast planking helps builders save time, conserve weight, handle longer spans and higher loads with thinner decks and greater rigidity compared to steel joists or poured in place concrete for both commercial and residential projects. Get Free Ultraspan Hollow Core Machinery Precast Concrete PlantInstallation at Construction 2014/07/28 Coote Engineering, Pre stressed Wall Panel.wmv Machine system for This is also shown in the UL directory. The production of hollow core slabs with Precast . The Hollow Core slab is manufactured in a standard 4' width and 8", 12", and 12 ½" thicknesses using a continuous concrete extrusion process. HC-3.0: Exterior Lap Precast Wall-Wall. For Sale: 4 beds, 2 baths ∙ 1897 sq. To reduce weight and provide a more efficient product, the planks are cast with continuous voids that run the length of the panel. Hollowcore plank is a prestressed concrete product for use on floors and roofs. How far can hollow core slab span? Hollow core precast concrete plank are actually prestressed concrete. Meets IBC and UBC standards, and fire ratings up to 3 hours. Our prestressed hollowcore plank, stairs and platforms are manufactured at our facility then transported to your jobsite, used as structural building components which allow for safe, accelerated construction with high finish quality which exceeds tilt up or concrete cast in place methods. Hollow Core Plank. The planks are manufactured on 500-foot-long beds in standard widths of 48 inches and thickness of 6, 8, 10, 12 and 16 inches. Precast Hollowcore & Solid Floors Excellent sound-reducing qualities, durability and inherent fire resistance make our hollowcore slabs the solution of choice for apartments, care homes, hospitals and commercial projects. PAROC Air keeps the roof structure dry without any mechanical systems. Flat Roofs: Hollow-core Concrete Slabs Paroc Air is a simple and safe solution for making dry flat roofs. The basis for this simple but effective solution is natural air pressure. MANUFACTURING PROCESS Elematic® is a machine extruded, precast, prestressed hollowcore plank. A hollow core slab, also known as a voided slab, hollow core plank or simply a concrete plank is a precast slab of prestressed concrete typically used in the construction of floors in multi-story apartment buildings.The slab has been especially popular in countries where the emphasis of home construction has been on precast concrete, including Northern Europe and former socialist countries of . That's about $5,400, or between $3,600 and $7,200 for a typical 30- by 30-foot slab that's 6 inches deep. The minimum thickness h min is 1-3/8 inches. The slabs are typically 120 cm wide with standard thicknesses normally between 15 cm and 50 cm. Prepared for the PCI Hollow Core Slab Producers Committee John E. Saccoman, Chairperson James Beerbower Ernest Markle Kevin Boyle James Markle Jeffrey Butler Milo J. Nimmer Loris Collavino William C. Richardson, Jr. Edward J. Gregory . 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