The two options are a cast in place concrete slab or a post tensioned slab. The strain. There are several construction issues with post-tensioned concrete that I have found consistently among engineers and contractors. In fact, the first prestressed-concrete bridge in Minnesota was post-tensioned. Post-Tension Building Slab System The Quality Structural Solutions (QSS) Post-tensioned Slab System consists of a fully integrated hardware and stressing equipment system of engineer designed components. All post tensioned concrete slab wholesalers & post tensioned concrete slab manufacturers come from members. This method of construction has, over the past 30 years, been widely used in many countries due to its several benefits over conventional methods. Welcome to Rock Solid Foundation, we are a small family owned business from Alexandria, LA. We specialize in all aspects of structural concrete, including foundations, slabs, poured in-place and tilt-up wall construction, elevated post-tension slabs, slabs over metal pan decks, etc. Anyway, application for the post-tensioning slabs system include: Low to high rise residential and commercial buildings Industrial floor slabs on the ground. Formally a custom home builder for 15 years, we have professional experience in all phases of construction. Post-tensioned slabs can be designed to be crack free and therefore waterproof slabs are possible. The process allows for less concrete to be required, larger spans and is less expensive. There are construction issues with post-tensioned slabs between the engineers and the contractors. These cables are tensioned prior to removal of the forms during original construction. Pacific Post Tension provides a complete post tension package for projects ranging from track homes and custom slabs to large planned communities and multi-use slabs. Since the early 1950’s, post tension tendons have been used in the design of concrete structures. Be it the thin beams. post-tensioned to eliminate joints. This presentation is to help General and Concrete Contractors manage construction projects that use Post-Tensioned Concrete. Once the slab has cured, the cables are stretched and secured at each end so that a force is placed on the slab. We're doing a kitchen remodel that includes trenching the slab in order to run gas to the island that previously had an electric cooktop. some of the advantages are increased spans , thinner sections, reduced storey height, lighter structures, better control on deflections and cracking, rapid construction and large reduction in conventional rebar. Post-Tensioning is a method of prestressing. An innovative bridge construction method using prestressing is the stressed ribbon bridge design 2) Post tensioning: It is a method of prestressing concrete by. 2mm) suitable for suspended high rise construction, to complex multi strand systems used in heavily profiled transfer slabs. Section 2—Referenced standards. generally consist of grouting the haunches and shear connector blockouts before post tensioning. Bonded Post Tensioning tendons are installed in a parabolic profile prior to placing of concrete. Cracks on post tension slabs experienced in the first few days after placing are USUALLY due to too much water in the mix, done for ease of placement. We doesn't provide post tensioned concrete slab products or service, please contact them directly and verify their companies info carefully. What is Post Tensioned Concrete? Definition of Post tensioned concrete in Construction A structural procedure of strengthening concrete slabs and components that involves the installation of high tensile strength cables. A concrete slab can be cast in two ways: It could either be prefabricated or cast in situ. Re: post tension v. The PTI Design Procedure is used to design a slab-on grade foundation that will respond elastically to forces the foundation is exposed to including those that are the consequence of. Contact us today on 03 9702 4557. A below grade, post-tensioned concrete foundation system for use in the construction of residential dwellings and other structures is described. It has executed a number of post-tensioned buildings, bridges and water tanks structures in the UAE and other Gulf countries and operates throughout the Middle East. I need to be able to put a 2-1/2" Conduit in it if ppossible. In post tensioned slab we use tendons it can resist the tensile force. Post Tension Company in Dubai & UAE. Experienced Senior Executive Engineer with a demonstrated history of working in the civil engineering industry. Post-tensioned slabs on grade are usually used in industrial structures with the primary objective of eliminating most of the joints. Let us show you how Post Tensioning can save you time and money. seems difficult to believe that there are 4 times more lineal feet of cracking in a post-tensioned slab than in a jointed slab-on-ground. The transfer of tension to the concrete is achieved by the steel cable acting against steel anchors embedded in the perimeter of the slab. Post-tensioning is a method of reinforcing (strengthening) concrete or other materials with high-strength steel strands rebars, typically referred to as tendons. remove delaminated/ spalled concrete to an average of 3" deep using chipping hammers without damaging/cutting any p/t tendons or reinforcement. The placement of the post tensioning cables can take place at the same time as the general reinforcement taking place. Wilson Many high-rise residential structures are constructed using post-tensioned slab reinforcement. Back in the 1960 there was limited use in concrete foundations in residential construction, but very little. This is especially important in cold weather as concrete gains strength much more slowly in lower temperatures. Post-tensioning (PT) is one of the most advanced and efficient technologies used to reinforce concrete. I'll still wait for the engineers blessing on it. Shorter curing time - the curing time of VSL's post-tensioned slab on grade is very short compared with any other type of slab. To quicken construction process, post-tensioned slabs were preferred to conventional slabs meaning. Pacific Post Tension provides a complete post tension package for projects ranging from track homes and custom slabs to large planned communities and multi-use slabs. Williamson, Oklahoma Post-Tension, Inc. Therefore, GTI is making available our glossary of post-tensioning terms. Post-tensioning applications include office and apartment buildings, parking structures, slabs-on-ground, bridges, sports stadiums, rock and soil anchors, and water-tanks. Post-tensioned slabs reduce the risk of cracking more effectively than other reinforced slabs because of the compressive forces that are applied by the post-tensioning cables. We offer services such as setting forms, digging beams, installation of cables, grading pads, dirt knockdown, concrete placement, and stressing cables. Behzad has 3 jobs listed on their profile. With hundreds of projects to our name, BBR Contech can help you achieve the best possible slab configuration for each floor size and loading requirement. The approach also reduces energy consumption and allows for fast and easy installation of electrical, air-conditioning and other services. Post-tension. Formally a custom home builder for 15 years, we have professional experience in all phases of construction. Why? Because Post-Tensioning enhances concrete strength under both compressive and tensile stresses. (PTSI) has been established in end of 2006 to provide cutting-edge engineering solution. There are two methods of prestressing. For the Medical Office. The preferred post-tensioning system used. Australian Post-Tensioning services are customisable to match your needs, with expert solutions provided to ensure your project is achievable. POST-INSTALLED REBAR CONNECTIONS IN NEW CONSTRUCTION PROJECTS Diaphragm walls Misplaced bars Slab connections Vertical/horizontal connections. The Stresscon Advantage Stress-con, Inc. Post-tensioned concrete slab tendons are unidirectional, snaking through the concrete to provide superior tension. calculating the tension joints in the concrete slabs to eliminating the need for pour strips altogether. The effects of post-tensioning tendons can be simulated by equivalent loads, inducing. Tel : +971 4 320 5466 Fax : +971 4 333 7466. Demolition of post-tensioned concrete structures presents the contractor with unique issues. Post-tension concrete has proven to be the preferred method of construction for commercial and office buildings, residential apartments, parking structures, as well as single family homes. post-construction penetrations (e. All advantages of post tensioned slabs wholesalers & advantages of post tensioned slabs manufacturers come from members. 4a) Post Tension Slab shown curing after the slab pour wih cables waiting to be stretched to engineers specifications. Post-Tensioned concrete courts provide many advantages, the design of the system will greatly decrease the chances for cracking, settling and ponding. Post-Tensioned Flat Slab system provides flat and thin floor. 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 Post-tensioned structure, the tensioning of reinforcement is done after the concrete has been placed. The company is specialised in PT design, detailing and construction. We welcome you to explore our services and experience our commitment. Book on Post-Tensioned Buildings: Design and Construction by Dr. It may be all of these things. Slabs using the post-tension method can be built thinner, which can cut down on construction costs and curing time. This spreadsheet program provides for the design and analysis of post-tensioned concrete one-way beam and slab systems and two-way flat plate slab systems. The disadvantage over bonded post-tensioning is the fact that a cable can destress itself and burst out of the slab if damaged (such as during repair on the slab). ‘Post-apocalyptic,’ is how some locals describe it. The United States Tennis Court and Track Builders Association did not issue a general specification for post-tensioned construction until 1982. http://pacificblasting. Post-tensioned concrete is a term heard more and more in the construction industry today. Incorporated in Sydney in 1982, Australian Prestressing Services (APS) have steadily grown into one of the leading Specialist Post Tensioned Concrete Contractors in the world. Labor costs are also reduced because less material is used in slab construction and construction times are optimized. This method of reinforcing concrete enables a designer to take advantage of the considerable benefits provided by prestressed concrete while retaining the flexibility afforded by the cast-in-place method of. makes no representations about the suitability of the information contained in this video for any. Technical Data For HB Grout Pump:. Shouldn’t be a problem. The post-tensioned slabs allo -scale model of the feasibility of installing and tensioning cables for EPR nuclear power plant construction. Post Tensioning Concerns. Construction 2010, and this technical special provision. Post-tensioned cables are strands of high-strength steel that surrounded in plastic sheathing, similar to electrical cables. KANG, AND PINAKI R. We offer a wide array of concrete forming supplies along with complete knowledge and expertise. Cracks on post tension slabs experienced in the first few days after placing are USUALLY due to too much water in the mix, done for ease of placement. “The post-tension construction using cable under tension holds the slab intact in areas where there is a lot of movement and vast daily temperature swings. The workflow of creating tendons for post-tensioned slabs in SOFiSTiK SOFiPLUS was the topic of one of my previous articles. Anyway, application for the post-tensioning slabs system include: Low to high rise residential and commercial buildings Industrial floor slabs on the ground. WOODWARD This paper describes an investigation into the collapse of a single-span, segmental post-tensioned concrete bridge. We have an established reputation for being leaders innovation, determining creative solutions for complex problems. The unique design of the PS=Ø® coupler accommodates the dynamic movement caused by the post tensioning compression forces in the slabs. The strain. One is called pre-tensioning. Post-tensioned slabs are intrinsically waterproof and. The foundation includes a post-tensioned concrete floor slab formed on the soil base of a below grade excavation. Darviche Haddad is a specialist post-tensioning sub-contractor, originally established in Lebanon, with more than 45 years experience in this field. Lift-slab operations must be designed and planned by a registered professional engineer who has experience in lift-slab construction. Post-Tensioning Institute's "Design of Post-Tensioned Slabs-on-Ground", (PTI Design Procedure) 3rd Edition . ltd, Chennai, Tamil Nadu. Expansion joint No. I have never used a post-tensioned slab on grade for small residential construction. Floortec is a member of PSC group. way slab and post tension slab as per provisions of respective IS codes. Post Tension Cable Suppliers Ready to Support Your Project. Department of Labor 200 Constitution Avenue NW. Floortec is a specialist applicator in the fields of concrete flooring, protective coatings, post-tension, and sandwich panels. INTRODUCTION. Construction and Maintenance Procedures Manual for Post-Tensioned Slabs-on-Ground 8 Design & Construction of Post-Tensioned Slabs-on-Ground 9 Post-Tensioned Commercial and Industrial Floors 9. Please consult TAL for your specific project specification requirements. CCS has several high profile clients and has developed a portfolio of high quality services while implementing a safety first standard and overall high standards of concrete construction services. The “Design of Post-Tensioned Slabs-On-Ground”, 3rd Edition manual was published by the Post-Tensioning Institute in December 2004. Post-tensioned slabs are intrinsically waterproof and. There are construction issues with post-tensioned slabs between the engineers and the contractors. concrete, post tensioned slab construction or vacuum dewatering. CCL Post-Tensioned Slabs are the first. If you are still horribly paranoid, you can always have the slab x-rayed. We provide "best-in-class" integrated solutions of Unbonded P-T designing, supply of Monostrand Unbonded P-T System and post-sales services. Back in the 1960 there was limited use in concrete foundations in residential construction, but very little. Post Tensioning Slabs. Post Tension Slabs Post Tensioned Slab Over view Post tensioning is a technique for reinforcing concrete. REINFORCING STEEL AND POST-TENSIONING SAFETY ISSUES p. Architects, Structural Engineers, General Contractors, Real Estate Developers, and Owners incorporate post-tensioning systems on their projects in order to achieve economy, efficiency, quicker construction and lower lifetime cost of the structure. Post Tension Slab. Post-tensioning is a form of pre-stressing concrete to provide reinforcement and overcome concrete's weaknesses. The use of post-tensioned cables in slabs has many direct and indirect advantages: Direct. The idea of prestressed concrete has been around since the latter decades of the 19th century, but its use was limited by the quality of the materials at the time. United Construction Development company LLC ( UCDC) was established in Sultanate of Oman by group of Professionals, backed by key staff with extensive design and field experiences, provides specialists services to clients, particularly in the design and construction of Post Tensioning , Pre-stressed , Ground anchor and repair. long slabs started in May 2008. post-tension design The art and science of reinforcing concrete with post-tensioning systems is always evolving. Houston Post Tension, Inc. post‐tensioning. I am beginning to prepare a structural demolition plan and shoring plan for a multi-story post-tensioned structure. This ensures long-lasting life that can be attained due to prestress for making them ideal to counteract deflections. 1 - Sample Letter to OSHA p. As a result, even though post-tensioning is meant to help prevent a slab from cracking, the slab can still crack if the tensioning process is done incorrectly. Faster Installation: 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 mesh-reinforced slab. The concrete is cast around plastic, steel or aluminum curved duct, to follow the area where otherwise tension would occur in the concrete element. Tendon layout, including dimensions, which locates the tendons in the horizontal plane. Post-tensioning is a method of reinforcing (strengthening) concrete or other materials with high-strength steel strands rebars, typically referred to as tendons. CCL Post-Tensioned Slabs are the first. tions are given concerning preliminary design and indirect control of deflections in post-tensioned flat slabs. Prior to the development of post-tensioning techniques the effectiveness of concrete was limited to short spans. Ours is a team of professionals having international experience in Structural Solutions and constructive participation in World's prestigious projects. Cutting post tension cables can be very dangerous. Labor costs are also reduced because less material is used in slab construction and construction times are optimized. Construction. From a simple slab on ground project to the construction of a complex system of freeway interchanges, post tensioning your concrete elements can provide superior strength with less material. A4-Slab design using post-tensioning A5-Shrinkage-compensatingconcreteexamples CHAPTER l-INTRODUCTION l. Generally we use post-tensioned slab for resisting the tensile force because the concrete is good in compression and steel is good in tension. Post Tension and Rebar Fabrication Elkins Tri-Steel, LLC is your premier supply source for post tension and rebar fabrication, serving the needs of home builders and commercial and industrial contractors in the greater Fort Worth area and beyond. Post-Tensioned Concrete Court Construction. Post-tensioning tendons, which are high-strength steel cables inside plastic sheathing, are positioned in the forms before the concrete is placed. I steer customers towards conventional every opportunity I'm asked. With PTI certified extrusion and fabrication facilities, we are fully equipped to provide you all the professionally engineered post tension cable you need to successfully complete your project in the most economical and efficient way. The post-tensioned slabs on grade for the project included: A 35,000 m2 post-tensioned floor internally for the dry goods storehouse. Darviche Haddad is a specialist post-tensioning sub-contractor, originally established in Lebanon, with more than 45 years experience in this field. If they had access to the edge to post tension the floor, don't you have access there to vent the slab from the side rather than penetrating it? And comments; On flat pieces, the post tensioning cables USUALLY run straight through from one side to the other. See more ideas about Concrete slab, Architecture details and Concrete building. I need to be able to put a 2-1/2" Conduit in it if ppossible. When the cables are tensioned, the concrete is placed in compression. Post Tension Elevated Decks Post-tensioned elevated decks, often used in parking structures, offer many advantages over other methods of construction. Basics of Design & Inspection of Pre-Stressed and Post Tensioned Concrete Structures This seminar introduces different techniques used in the pre-stressing process and demonstrates the effect of pre-stressing force on members. We are the number one leader in quality and service since our inception in 1988. , Canada and Mexico, and manufacturers of prestressing materials in the U. List of best Concrete - Precast & Post Tensioning in Dubai of 2019. Construction of post-tensioned slabs on grade is very similar to using reinforcing steel, except for the tensioning step. Post-Tensioned or Engineered Slabs Another form of monolithic slab is the post-tensioned or "engineered" slab. Intro to Post-Tension 2. post‐tensioning. Post-tensioned concrete slabs in buildings have many advantages over reinforced concrete slabs and other structural systems for both single and multi-level structures. PRESTRESSED CONCRETE CONSTRUCTION MANUAL 3rd Edition April, 2017 NEW YORK STATE DEPARTMENT OF TRANSPORTATION OFFICE OF STRUCTURES About the Cover: Roslyn Viaduct over Hempstead Harbor. This arrangement enables strand loads to be transferred to the concrete structure by bonding, which allows for passive reinforcement to be optimised and significantly reduced. Whether you choose a post-tension or rebar slab Nortex has the experience and expertise to design a foundation suitable for all your construction and design needs. PTE keeps up with the latest developments and best practices providing that expertise to architects and structural engineers who are considering post-tensioning for their projects. With over 36 years of experience in the field of ironworking you can trust your construction project to be competitively priced, honestly assessed and completed with the highest level of quality and professionalism. In this time Tensioned Concrete has built a reputation for providing smart and efficient design and construction solutions, coupled with high-quality site services. Sections are tension-controlled when the tensile strain in the extreme tension. Post Tension Technologies was the first of its kind in the Montgomery area and has had tremendous success with a wide range of residential, commercial, and industrial projects. Concrete Driveway & Post Tension Slab Specialist, Contractor of Tulsa, Oklahoma. The contemporary style of concrete post tensioning is being widely utilized for applications in offices, apartment buildings, bridges, parking lots, concrete slabs, structures, sports stadiums as well as water-tanks. All post tensioned concrete slab wholesalers & post tensioned concrete slab manufacturers come from members. JURGENS his article presents a set of guidelines intended to T assist designers in routine post-tensioning design, beginning with a discussion of the initial decisions that must be made to design post-tensioned floor members. Experienced Senior Executive Engineer with a demonstrated history of working in the civil engineering industry. Post-tensioned Concrete Structures Amazing Facts About Us Since the 1980’s, Dutchland has been specializing in the design, manufac - turing and construction of precast post-tensioned concrete structures for water and wastewater applications. Post-Tension Repair Post Tension Cable (PT cable) reinforced structures use steel cables as strengthening components. Project Includes - Design & Construction of: 4 no Flyover in Chennai, NORTH USMAN ROAD, SOUTH USMAN ROAD, G. Therefore, GTI is making available our glossary of post-tensioning terms. The intelligent use of post-tensioning technology by CCL's experienced engineers can bring bespoke solutions to suit each unique situation. Why? Because Post-Tensioning enhances concrete strength under both compressive and tensile stresses. CHAKRABARTI In Phase-I, a total of six unbonded post-tensioned (PT) slab specimens were tested. ” One design pushed the limit to a 102-ft center span and a depth-to-span ratio of 1:42. Learn more. Experience counts in post-tensioned slabs Delivering large expanses of joint-free concrete slabs for building structures is a precise science. Post Tension Cable Warning Markers Recommended for Post-Tension Concrete Contractors. , L imited professionally manufacture prestressing and post-tensioning materials, component and pt equipment. However, in practice it ends up being flawed because it is an extremely difficult system to implement correctly. The Kansas Department of Transportation has developed standards for the design and construction of post-tensioned concrete haunched slab bridges. Post-tensioning utilizes concrete's inherent compressive strength to construct slab-on-ground foundations. Construction of post-tensioned slabs on grade is much related to using reinforcing steel, apart from the tensioning step. Slab post-tensioning: Our post-tensioned slabs are a cutting edge product, applicable to industrial buildings and high-rise blocks in particular; External post-tensioning: External PT is ideal for strengthening existing structures, utilising external tendons which are easy to inspect or replace. Design live loads are 3 kPa. Concrete Driveway & Post Tension Slab Specialist, Contractor of Tulsa, Oklahoma. In addition to Unbonded P-T System we provide I-sects (Void Slab) System which makes concrete floor lighter and Smart Products like Maturity Sensing System for measuring and monitoring in-place concrete. The 1,741 sq. A post tensioned slab is a form of prestressing where the slab is poured and after it has set a tension force is applied, usually by cables which were run thru conduits cast into the slab. retrofitted drains or slab openings). • External post-tensioning: External PT is mostly used in strengthening existing structures or for replacement applications where previous designs do not meet updated standards. If these cables are cut, nicked or in any way compromised, they can rip through the concrete and render the slab useless, or seriously injure someone. Our award-winning work encompasses building, energy, civil/infrastructure, and science/defense projects in the United States, Canada, and more than thirty additional countries. Post-tensioning is another method of reinforcing concrete and offers a variety of benefits such as the ability to construct thinner slabs that require less concrete as well as allow for greater span lengths between support columns for more flexibility in floor plans. Apr 22, 2016- Explore micca_rangasa's board "POST TENSION" on Pinterest. Theoretically, this compression is accomplished by “squeezing” the slab together from the edges toward the middle. Understanding the causes of some of these problems should help. With over 36 years of experience in the field of ironworking you can trust your construction project to be competitively priced, honestly assessed and completed with the highest level of quality and professionalism. This one is some sort of an update/extension, but for a different. Typically a post-tension cable is compromised when some type of restoration, renovation, or remedial work is being performed on a post-tensioned reinforced structure. This method is achieved in a process where metal or plastic tubes which contain loose tensioning cables or rods are cast into the concrete. SDI is a nationally recognized leader in the repair, alteration, and strengthening of post-tensioned concrete and steel structures. For industrial and office buildings with large spans, application of post-tensioned, (PT), concrete floors is competitive to reinforced concrete. Suncoast Post-Tension is North America's largest unbonded post-tension specialist. If these cables are cut, nicked or in any way compromised, they can rip through the concrete and render the slab useless, or seriously injure someone. In post tensioned slab we use tendons it can resist the tensile force. Construction 2010, and this technical special provision. Concrete is the material of choice for a host of new construction projects requiring tilt wall panels, industrial, commercial and warehouse flooring, residential slabs on grade and recreational surfaces. makes no representations about the suitability of the information contained in this video for any. The use of post-tensioned concrete slabs for tennis courts, however, is fairly new. ENSURING QUALITY CONSTRUCTION The amount of post-tensioning strand sold has almost doubled in the last ten years and the post-tensioning industry is continuing to grow rapidly. CYPECAD's 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. org Also Available in Pocket‐Size Version. Amend Section 1711 to read as follows: §1711. This method allows for large slabs to be constructed without joints, creating a monolithic slab that can. Post-Tensioning Explained Unlike pre-tensioning, which can only be done at a precast manufacturing facility, post-tensioning is performed on the jobsite in cast-in-place applications. When looking to obtain the biggest bang for your concrete buck, you can’t go wrong with post tension technology. Concrete Driveway & Post Tension Slab Specialist, Contractor of Tulsa, Oklahoma. Builders Post-Tension (BPT) - 403 Richey Rd, Houston, Texas 77090 - Rated 4. 3 - OSHA’s Request for Information - Reinforcing Steel and Post-Tensioning Safety Issues Sample Letter to OSHA OSHA Docket Office Docket No. Apr 22, 2016- Explore micca_rangasa's board "POST TENSION" on Pinterest. POST-INSTALLED REBAR CONNECTIONS IN NEW CONSTRUCTION PROJECTS Diaphragm walls Misplaced bars Slab connections Vertical/horizontal connections. This also reduces structural self-weight and produces overall material efficiencies whilst controlling deflections more effectively. They are qualified for cryogenic application in the construction of LNG and LPG tanks. This exclusive video tutorial is presented by Ahmed Samir. Described below, some of the advantages of the slabs :-. Formally a custom home builder for 15 years, we have professional experience in all phases of construction. Contractors sometimes need to drill or cut into a post-tensioned slab for repair or renovation work. ARCHITECTURAL INTELLIGENCE CCL Post-Tensioned Slabs can bring unique freedom. Post-tensioning by Stress-Con applies to both commercial and residential applications. Post-Tensioning is a method of prestressing. Department of Labor 200 Constitution Avenue NW. We provide residential and commercial customers in Houston and surrounding areas with post te. We have been doing business in Tulsa and surrounding communities for 20 years. The Kansas Department of Transportation has developed standards for the design and construction of post-tensioned concrete haunched slab bridges. Precast concrete segment construction in bridges to allow for longer spans. , L imited professionally manufacture prestressing and post-tensioning materials, component and pt equipment. PTI's informative manuals and technical guides provide guidance on the design, construction, maintenance, and repair/rehabilitation of post-tensioned concrete. This can help to minimize cracking and differential settlement in adverse conditions. The foundation includes a post-tensioned concrete floor slab formed on the soil base of a below grade excavation. Slab City has been described as either functioning anarchy, the antidote to the American dream, the last truly free patch of America, or a tragic indictment of the modern economy, a scree of human debris washed up by society. Louis, at the St. • Flat slab post-tensioning: Our post-tensioned slab system (Flat Slab system) is predominately used for building structures and industrial pavements. We provide Post-tension slab design, Beam design, Samples of materials, Post tension component dimensions and related technical services to architects, consultants and contractors at affordable cost. Architects, Structural Engineers, General Contractors, Real Estate Developers, and Owners incorporate post-tensioning systems on their projects in order to achieve economy, efficiency, quicker construction and lower lifetime cost of the structure. Welcome to Rock Solid Foundation, we are a small family owned business from Alexandria, LA. I am assuming you know what pre-stressing is. Edition published in 1980, 2nd Edition in. Members of the Institute include major post-tensioning material fabricators in the U. The placing of cables is done according to the suggestions provided by the engineer and managed to run through the center of the slab. Daagoo is the leading company in post tension cable slab concrete construction. Slabs are post tensioned. Many post-tensioned slabs will be stamped to alert the owner and any renovation contractors that the slab is post tensioned. Concrete Post-tension Slab Checklist. Designing the Post Tensioned Slab. Operating the most PTI-Certified facilities in Arizona and Nevada, SPT is one of the largest turnkey post tension contractors in the United States, extruding and installing millions of feet of post tension reinforcing annually. A subsequent report established the feasibility of using post-tensioning in slab-on-ground construction and verified many of the BRAB assumptions. com/demolition/projects/structural-demolition/university-sciences-building-demolition. makes no representations about the suitability of the information contained in this video for any. Precast post-tensioned slab panel construction shall consist of fabrication, on-site and off-site storage, transporting and erecting of the precast slab panels and for the furnishing, installation, post-tensioning and grouting of tendons. Book comes in US and International editions. Bekaert post-tensioning strands are produced in compliance with ASTM, PTI and FIB standards. View Behzad Katoozian’s profile on LinkedIn, the world's largest professional community. In post tensioned slab we use tendons it can resist the tensile force. I'll still wait for the engineers blessing on it. long slabs started in May 2008. Knowing the advantages of post tension construction, but also the difficulties that come with this construction method, HALFEN has engineered the HSD-LD Lockable Dowels system to help the. The first floor slab will be a 12 inch thick concrete slab with #7 reinforcement at 12 inches on-center each way, top and bottom. The Blue Book Building and Construction Network is the Industry's leading source of regional, categorized Concrete - Post-Tensioning information. As a result, even though post-tensioning is meant to help prevent a slab from cracking, the slab can still crack if the tensioning process is done incorrectly. In this context, design is defined as the decision-making process of planning, sizing. Post-tensioned concrete substrates are subject to bending and deflection. We have an established reputation for being leaders innovation, determining creative solutions for complex problems. Strengthening of existing structures that are susceptible to seismic shifts. generally consist of grouting the haunches and shear connector blockouts before post tensioning. Whether you need assistance with a concrete foundation, concrete reinforcement, post-tension concrete repair or concrete construction in general, we can help. If you know what year your home was built and/or which builder was used, we may be able to help you over the phone. I need to be able to put a 2-1/2" Conduit in it if ppossible. If they had access to the edge to post tension the floor, don't you have access there to vent the slab from the side rather than penetrating it? And comments; On flat pieces, the post tensioning cables USUALLY run straight through from one side to the other. From a simple slab on ground project to the construction of a complex system of freeway interchanges, post tensioning your concrete elements can provide superior strength with less material. Typically, a 6″ thick slab conventionally reinforced with 6x12x0/1 and No. We have built an outstanding reputation for providing quality post-tension products while maintaining competitive pricing. A post-tension slab is a slab of concrete without traditional stem type footings instead there is a series of cables or tendons that run the length of the slab. My floor is a post tension concrete slab, home is only 4 yrs old. construction. The format is similar to the existing standards available for reinforced concrete haunched slab bridges (RCSH). The risk on this type of foundation system can be reduced sizably if it is built and maintained with positive drainage and vegetation control. Post-tensioned slab-on-ground provides economic advantages because it decreases the amount of concrete and rebar required to provide the required level of structural integrity. PT slabs offer the thinnest slab type, as concrete is worked to its strengths, mostly being kept in compression. HHC specializes in the structural and civil sectors within the Construction Industry providing solutions across a wide range of post-tensioning activities. A post-tension slab is a slab of concrete that has been pre-stressed using a specific method to increase the strength of the concrete. Post Tensioning & Concrete Restoration. We have built an outstanding reputation for providing quality post-tension products while maintaining competitive pricing. Common design. The original installer of the post-tension strands came out and repaired it under the supervision of the original engineer. Post-tensioned concrete is accomplished by tension-ing high strength steel cables within the concrete mass. Issues raised during the pre-construction and construction phases were evaluated and documented in this report. We have been in business for over 15 years and have a combined 35 years of experience in Post-Tension foundations. With PTI certified extrusion and fabrication facilities, we are fully equipped to provide you all the professionally engineered post tension cable you need to successfully complete your project in the most economical and efficient way. A post-tensioned slab-on-ground foundation is simply a ground-supported concrete slab foundation that is reinforced with flexible cables that are tensioned after the concrete hardens. Technical Bulletin # 125 RE: Post-tensioned structural slabs DATE REVISED: January 07, 2005 An increasing number of tile installations are taking place on post-tensioned structural concrete. Post-tensioning allows almost any shape of structure to be constructed while reducing environmental impacts, construction time, materials and costs. I installed dozens of PT slabs in homes in Las Vegas, and just recently finished a 10,000 CY post-tensioned parking garage. Williamson, Oklahoma Post-Tension, Inc. McClain, Inc. Get this from a library! Design and construction of post-tensioned slabs-on-ground. > Designing Post tension slabs and details as per BS/ACI codes. Labor costs are also reduced because less material is used in slab construction and construction times are optimized. Post-tensioned (PT) concrete construction is a method of reinforcing (strengthening) concrete or other materials with high-strength steel cables or strands, commonly referred to as tendons. I have sent an RFI to engineer no answer yet. l-Purpose and scope Consistent with the mission of ACI Committee 360, this report presents state-of-the-art information on the design of slabs on grade. Learn more. Design methods are given for unreinforced concrete, reinforced concrete, shrinkage-compensating concrete, post-tensioned concrete, fiber-reinforced concrete slabs-on-ground, and slabs-on-ground in refrigerated buildings, followed by information on shrinkage and curling. Once the slab cures, qualified personnel apply tension and grout the cables. Monitoring Concrete Temperature and Strength to Post-tension in Cold Weather When using post-tensioning in a construction project, temperature and strength of your in-situ concrete elements must be closely monitored. Former exposure to post-tensioning is advantageous, but not essential. DYWIDAG Post-Tensioning Systems employ high-quality corrosion protection methods significantly contributing to the longevity of structures.