The companies that make prestressed concrete tanks are crom, dyk, natgun, and preload. Post tension slab video post tension concrete slab post. Overview safe is the ultimate tool for designing concrete floor and foundation systems. For general design philosophy and analysis of post tensioned concrete, the reader should refer to pdhonline course s127. This system gained wide use in both austin and san antonio because of the lower cost which the posttensioned slab enjoyed compared to the heavier f. It allows slabs and other structural members to be thinner.
The following table of prestress losses is recommended for the design of post tensioned members, and does not include friction or wedge set losses. Posttension basics how posttensioned slabs are built. Masonry walls can be post tensioned this is usually done with a solid steel bar fastened to the foundation and stressed with a nut at the walls top. He is the coauthor of the book posttensioned concrete principles and practice which covers the design of posttensioned concrete structures from basic fundamentals to specific. Service stress analysis, ultimate moment strength and ultimate beam. The software is extremely easy to use and is intended for both occasional and regular designers of posttensioned concrete floor systems. Presentations will focus on design, analysis, and construction of posttensioned buildings and will include handson training on the design and analysis of new posttensioned building structures. Structural engineers design concrete slabs with posttension cables to obtain greater span lengths between supporting columns and to allow thinner slabs. It reduces or eliminates shrinkage crackingtherefore no joints, or fewer joints, are needed. The strength and added stiffness of a post tensioned foundation reduces the amount the slab will bend under load. Ram conce pt contains an advanced feature set that allows for the design of a wide variety of floor systems including posttensioned, reinforced concrete and hybrid systems, elevated. This report presents the structural engineering calculations of a posttensioned floor using parallel beams and oneway slab construction. Ram concept contains an advanced feature set that allows for the design of a wide variety of floor systems including posttensioned, reinforced concrete and hybrid systems, elevated slabs and mat. This video tutorial is about pts posttension slab design which is trained by master of structural engineering mr.
Pt slabs offer the thinnest slab type, as concrete is worked to its strengths, mostly being kept in compression. Posttensioned, reinforced concrete slab design software ram. Six problems with posttensioning force specifications. Rapt is a two dimensional post tension beamslab design software. Advantages of using posttensioning for your next slabonground project. Ccl carries out complete designs for posttensioned concrete applications. Load balancing for transfer conditions in post tensioned concrete slabs duration. Design floors and foundations reliably and efficiently, saving time and money, and overcoming the most common concerns you face as a designer. Support everyday concrete bridges of all types, including precast and castinplace, reinforced, pretensioned, and posttensioned. Economically design post tensioned and reinforced concrete floors including slabs, mats, and rafts, with exceptional visibility into compliance, efficiency, and practicality. A residential post tensioned concrete slab will typically be 8 inches thick and use 3000 psi concrete. The general criteria used for the design, such as details of material.
Post tension slab design software structural engineering. Once the concrete has gained strength to 2000 psi, typically within the 3 to 10 days recommended by pti, the tendons are stressed. The program is divided into three separate screens, which correspond to the three major areas of concern in the design of a posttensioned member. Posttension cables are steel wires inserted into plastic sheathing laid in place while pouring the concrete slab. The posttensioning institute designed posttensioned foundations. Posttensioning concrete increases the many benefits associated with a concrete framed building. What is the best software to design a post tension slab. This spreadsheet program provides for the design and analysis of post tensioned concrete oneway beam and slab systems and twoway flat plate slab systems. Longer spans can be achieved due to prestress, which can also be used to counteract deflections.
Input uniformly distributed loads independent of slab geometry. Jun 04, 2019 engineers who specialize in post tensioning design and who are comfortable with large and complex projects benefit most from the rigorous method. If you use mixed steel, wood, or masonry then ram structural systemconcept is probably a better option. Adapt corporation posttensioning and reinforced concrete. Threedimensional 3d finite element software for analysis and design of concrete and posttensioned floor and foundation systems. General overview of post tensioned concrete design. As soon as the concrete has achieved strength to 2000 psi, usually within the 3 to 10 days suggested by pti, the tendons are stressed.
Design floors and foundations reliably and efficiently, saving time and money, and overcoming the most common concerns. The design is based on hong kong building code hkcop 2004 and its amendment of june 2007. Design seminar descriptions posttensioning institute. Post tensioned and reinforced concrete slab and beam design software adaptptrc product overview since 1981, adapt software s proven reliability and easeofuse have made it the most widely used software for the design of post tensioned slabs and beams worldwide. Whether the project is local or overseas, design codes from around the globe are available for reinforced concrete and post tensioned slab design. The following table of prestress losses is recommended for the design of posttensioned members, and does not include friction or wedge set losses. Twoway posttensioned design amsysco post tensioning. This book is destined to become the definitive work on the design of post tensioned concrete buildings for many decades to come. Pt designer is a computer program for the design and analysis of linear post tensioned concrete floor systems. Today posten engineering systems provides this same power to you.
A 2 2area 2 a c 2 2 posttensioned concrete design table 11 list of symbols used in the aci 31808 code cp area enclosed by the outside perimeter of the section, in a g gross area of concrete, in a 2 l total area of longitudinal reinforcement to resist torsion, in a o area enclosed by the shear flow path, sqin a oh area enclosed by the centerline of the outermost closed. Net can be used to design and analyze prismatic frames where the crosssection of the beams or slabs can vary from one span to another span, while the crosssection remains constant between supports in. A residential post tensioned concrete slab is usually 8 inches thick and applies 3000 psi concrete. Tendons today are seven highstrength steel wires wound together and placed inside a plastic duct. Jul 21, 2017 rapt is a two dimensional post tension beam slab design software. Design of post tensioned flat slab structures in ram. Post tensioned foundation information for the homeowner. Economics of the posttensioning slab system are discussed including relative material contents, speed of construction, and factors affecting the cost of.
Dec 16, 2016 etabs 24 reinforced concrete slab design. Instantly download a sample cad collection search for drawings browse s of 2d cad drawings, specifications, brochures, and more. Eriksson software precastprestressed concrete design. Post tensioned concrete design table 11 list of symbols used in the aci 31808 code m bal design moment resistance of a section with tendons and the necessary mild reinforcement to reach the balanced condition, nmm m u factored moment at section, lbin n c tension force in concrete due to unfactored dead load plus live load, lb p.
A posttensioned foundation is a concrete slab foundation that is reinforced with stranded steel cables that are tensioned after. Durability aspects of present pt systems, key design concepts, code requirements, and practical design and construction tips will also be discussed. Posttensioned and reinforced concrete slab and beam. Support everyday concrete bridges of all types, including precast and castinplace, reinforced, pre tensioned, and post tensioned. Inducta engineering concrete buildings design software. The company uses the latest design software which is continually updated to reflect current international. Calculation and the theory by which the software works are attached with this softwares index, this thing is not seen. Posttensioned concrete analysis and design software. Post tensioned slab design, supply, install tensioned concrete. Posttensioned and reinforced concrete slab and beam design software adaptptrc product overview since 1981, adapt softwares proven reliability and easeofuse have made it the most widely used software for the design of posttensioned slabs and beams worldwide.
In 1971, hugh oneil created posten to enable rapid, detailed and efficient designs of post tensioned and reinforced concrete structures. The program is developed around the robust computational core of two popular programs ptdata. Posten post tensioned and reinforced concrete design. Once the slab cures, qualified personnel apply tension and grout the cables. Whatever the posttensioning requirement tensioned concrete has the. In this video, he will describe his experiences at the site as. Eriksson software precastprestressed concrete design and. Pt encapsulated systems should be clearly mentioned on all pt buildings with the. Posttensioning will reduce cracking and keep any cracks that might. This spreadsheet program provides for the design and analysis of posttensioned concrete oneway beam and slab systems and twoway flat plate slab systems. Posttensioned pt slabs are typically flat slabs, band beam and slabs or ribbed slabs. The first edition of the posttensioning manual was published in 1972, and as of the time of this writing 2018, they are up to their 6th edition. Streamline your next posttensioned concrete project.
Load balancing for transfer conditions in posttensioned concrete slabs duration. Mgt, mieaust, cpeng summary this paper outlines the major advantages of the use of posttensioning in building structures. The results of this program have been compared to other proprietary software that. A residential posttensioned concrete slab will typically be 8 inches thick and use 3000 psi concrete. Net, which many engineers have come to trust over the years for its accuracy and flexibility. The software is extremely easy to use and is intended for both occasional and regular designers of post tensioned concrete floor systems. Cypecads posttensioned concrete slabs for buildings module has been designed to carry out the design of the passive reinforcement of posttensioned slabs, using the forces that have been obtained from analysing the posttensioned tendons bonded or unbonded, whose properties have been introduced by the program users posttensioned technology has different degrees of acceptance in. Pt designer is a computer program for the design and analysis of linear posttensioned concrete floor systems. Threedimensional 3d finite element software for the integrated analysis and design of concrete and posttensioned floor and foundation systems.
Post tensioning tensioned concrete offers a wide range of post tensioning solutions from mono strand systems typically used in house slabs where the ground is highly reactive, slab systems 12. Support multiple design codes, including us aashto lrfd and lfd, canadian chbdc, and indian irc working stress and limit states design. The additional time and effort expended when using this method are offset by the economy in design. The purpose of this publication is to widen the understanding of post tensioned floor construction and show the considerable benefits which include minimum storey heights, rapid construction, economy, maximum design flexibility, minimum number of columns, optimum clear spans, jointfree, crackfree. Post tension slab design software sethguthrie civilenvironmental 18 aug 16 19. The program is divided into three separate screens, which correspond to the three major areas of concern in the design of a post tensioned member. In 1971, hugh oneil created posten to enable rapid, detailed and efficient designs of posttensioned and reinforced concrete structures.
Post tension slab design software structural engineering general. It was found that a certain amount of poor design was prevalent, and the. Posttensioned slab design guide post tension slab problems. This book is destined to become the definitive work on the design of posttensioned concrete buildings for. Mar 27, 2017 this video tutorial is about pts post tension slab design which is trained by master of structural engineering mr. Adapt corporation specializes in structural concrete design software for post tensioning, reinforced concrete, and prestressed beam, slab, foundation. Concrete water tanks are often post tensioned to reduce crack width and leakage. Posttensioning, which is a form of prestressing, has several advantages over standard reinforcing steel rebars. Column design software for regular and complex profiles. Pt designer design of posttensioned concrete floors. Post tension slab video post tension concrete slab. For general design philosophy and analysis of posttensioned concrete, the. Actual losses, whether greater or smaller than computed values, have little effect on the design strength of the member but do affect service load conditions i. Beams of prismatic and other cross sections, with either constant or variable cross sections.
Posttension basics how posttensioned slabs are built the. Posttensioned and reinforced concrete slab and beam design. Post tension cables are steel wires inserted into plastic sheathing laid in place while pouring the concrete slab. Posttensioning tensioned concrete offers a wide range of posttensioning solutions from mono strand systems typically used in house slabs where the ground is highly reactive, slab systems 12. For general design philosophy and analysis of posttensioned concrete, the reader should refer to pdhonline course s127. Post tensioned concrete analysis and design software column design software for regular and complex profiles footing design software for isolated and strip footings. A residential posttensioned concrete slab is usually 8 inches thick and applies 3000 psi concrete. Concrete bridge design, analysis software leap bridge. We specialize in analysis and design software for precastprestressed concrete in both the transportation and commercial markets. Whether the project is local or overseas, design codes from around the globe are available for reinforced concrete and posttensioned slab design.
A combination of these values will determine the slab stresses at the time of stressing and at service loads. Slabonground design by using the pti ken bondy method. Concrete slab design software economically design posttensioned and reinforced concrete floors including slabs, mats, and rafts, with exceptional visibility into compliance, efficiency, and practicality. Structural engineers design concrete slabs with post tension cables to obtain greater span lengths between supporting columns and to allow thinner slabs. Its more user friendly compared to other pt design softwares. Posttensioned concrete design spreadsheet program a pdh. Built on adapts unique truestructure modeling and analysis technology, this software provides a powerful, yet easy to use. Design of post tensioned flat slab structures in ram concept. The purpose of this publication is to widen the understanding of posttensioned floor construction and show the considerable benefits which include minimum storey heights, rapid construction, economy, maximum design flexibility, minimum number of columns, optimum clear spans, jointfree, crackfree. Eriksson software is an engineering software development firm located in tampa, florida. Ccl carries out complete designs for post tensioned concrete applications. Most post tensioned concrete buildings are designed using the loadbalancing method. Presentations will focus on design, analysis, and construction of post tensioned buildings and will include handson training on the design and analysis of new post tensioned building structures. Reinforced and posttensioned concrete slab design software.
Want to design concrete floors economically, with exceptional visibility into compliance, and efficiency while designing slabs, mats, and rafts. Experience and expertise gained from working on projects around the world, are combined to deliver prompt, effective solutions. Ram conce pt is a software application for the structural analysis and design of conventionally reinforced and posttensioned concrete floors, mats, and rafts. Concrete bridge design, analysis software leap bridge concrete. Download free, highquality cad drawings, blocks and details of posttensioned concrete organized by masterformat. Streamline your next posttensioned concrete project tekla. Less concrete and steel are needed for the same structural capacity and the slab stiffness is increased so that the slab is better able to resist bending caused by differential soil movements. Ram concept is a software application for the structural analysis and design of conventionally reinforced and posttensioned concrete floors, mats, and rafts. Register now to learn more about this exciting partnership. With fewer pieces to handle and less concrete to place, a post tensioned slab can often be installed more quickly than a comparable rebar or wire meshreinforced slab. Cypecads post tensioned concrete slabs for buildings module has been designed to carry out the design of the passive reinforcement of post tensioned slabs, using the forces that have been obtained from analysing the post tensioned tendons bonded or unbonded, whose properties have been introduced by the program users. Pt designer, our latest post tensioned design software for more. Post tensioning concrete increases the many benefits associated with a concrete framed building.