Post Tensioned Slab On Grade Design Software

5 ") dia and contained in a Flat GI duct of 80 mm x 20 mm. Construction of post-tensioned slabs on grade is much related to using reinforcing steel, apart from the tensioning step. However, if expansive soils are present, the slab may move up, behaving like a. There is a partial basement dating back to the 1940’s. To meet the design requirements, a low value for post-tensioning had to be specified, in order to induce cracking in the floor system. ADAPT-SOG (Slab-On-Grade "SOG") is a complete three-dimensional (3D) Finite Element (FEM) Analysis and Design tool for the analysis and design of post-tensioned foundations slabs, with or without ribs, on either expansive or compressible soils. VSL's Slab on grade is a versatile method for producing slabs in industrial and commercial structures using the principles of post-tensioning to compensate for excess tensile stresses. The recommendations derived from these and other studies vary from extremely light to extremely heavy. The program does not design masonry for net tension forces. The drawings and other specifications are studied with reference to National Building (NBC). 5-12 publication: Standard Requirements for Design and Analysis of Shallow Post-Tensioned Concrete Foundations on Expansive Soils. In summary, soils with moderate to very high swelling pressures cause distress to lightly loaded slabs and pavements. EI represents flexural rigidity of the slab (EI will be replaced by [E. Concrete Slab Perpendicular Flexure & Shear Capacity. design of grade slab as per us code: 28: design of pt slab on grade as per us code: 29: seismic design of special moment resisting frame as per aci: 30: shear wall design as per aci: 31: tilt - up panel design as per aci: 32: concrete slab capacity as per aci: 33: bolt anchorage to concrete as per aci: 34: design of concrete beam as per aci: 35. in flat slabs and post-tensioned slabs, at slab to shearwall junctions, beam to col-umn junctions and within footings and foundation slabs. In addition, it means a lower overall building height for the same floor-to-floor height. construction and inadequate design of the post-tensioned slab-on-grade foundation systems. Full structural design of a 52-story Bayfront residential building, with 6-story parking structure and pool deck with amenities on the parking roof slab (7 th level). It addresses the planning, design, and detailing of slabs. Post-tensioning design, evaluation, and repair requires specialized knowledge. and Design of Residential Slabs-on-Ground, BRAB Report #33. Analysis and Design of RCC and Post-Tensioned Flat Slabs Considering Seismic Effect The design of post-tensioned flat slab can be done by using load balancing and equivalent frame method. However, if expansive soils are present, the slab may move up, behaving like a. The preliminary design proposal was to build the entire slab in a single pour, but due to. Inspection of Post Tensioned Slab. Skip to Standard Plans for Bridge Construction. April 24, 2019 Post-Tensioned Concrete Section (ACI 318-08) Software dan Tutorial tentang Teknik Sipil Anda juga bisa. Background information on design theories is followed by discussion. Statistical analysis methods include descriptive statistics, interval estimation and hypothesis testing, analysis of variance, design of experiments, regression analysis, and time series analysis. This web site provides structural design software which created using Microsoft Windows Excel 2010/2013 or 2016 Office 365. But we have seen designers balance more than 400% DL in some spans, which almost always leads to sudden failure of the slab. Need suggestions for a good PT software and design book(s) with examples of post tensioned slabs on grade. What is post tension slab, Advantages and disadvantages of post tension slabs: Although concrete is a strong material for construction, it is not resistant to breakdown especially where longer concrete slabs are required like in a bridge or a length of a beam. Becker Computerized Structural Design, S. By the third day, I noticed a crack in the back patio, and by the fourth, there were sprawling cracks throughout the entire foundation. 6 m and super imposed. Reality: Post-Tensioned structures can be modified just like any other building construction method as long as future modification is considered in the initial design. Post-Tensioned Slab-on-Grade Foundation 3D FEM Design Software ADAPT-SOG Product Overview ADAPT-SOG is a complete three-dimensional (3D) Finite Element … Reinforcing steel in slabs on grade - Concrete Construction. Conventional and post tensioned concrete slab on grade foundations, retaining walls, shallow foundations and deep foundation. Reinforced Concrete Wall Design Basics Mike O’Shea, P. In Canada the Canadian Precast/prestressed concrete Institute assumes this role for both post-tensioned and pretensioned concrete structures. Perform slab design with post-tensioning Software Products This steel connection design add-on will work with CSi’s ETABS 18. in Geotechnical Special Publication. second stage post-tensioning tendons (tendon pt-1 and pt-4) are stressed after the composite deck but before composite deck slab is placed. A designer should, however, consider the additional costs that will be involved in constructing a stiffened slab and should carefully analyze any perceived. However, the designer should use engineering judgment to determine if mat analysis and design techniques are suitable for such structures. Specifically, a concrete slab on grade may be subjected to concentrated post or wheel loading. Slab modeling, analysis, and design procedures feature a suite of sophisticated tools and applications, couple with post-tensioning, punching-shear, and beam detailing, and integrate the influence of soils, ramps, columns, braces, walls (rectilinear or curvilinear), and other interfacial elements. A vapor barrier, with or without a sand layer, may also be present in some circumstances. Size of drops is 3. ADAPT-SOG Slab-on-Grade Design Software: SOG Foundation with Soil Pressure ADAPT-SOG – ADAPT-SOG is a complete three-dimensional (3D) Finite Element (FEM) Analysis and Design tool for the analysis and design of post-tensioned foundations slabs on expansive soils. The risk on this type of foundation system can be reduced sizably if it is built and maintained with positive drainage and vegetation control. slab foundation design pdf Design of post-tensioned slabs and foundations. The foundation is a post-tensioned monolithic slab on grade. BuildBlock CAD Details & Technical Drawings CADDetails. The application of the software is for residential, or light industrial buildings. Slab modeling, analysis, and design procedures feature a suite of sophisticated tools and applications, couple with post-tensioning, punching-shear, and beam detailing, and integrate the influence of soils, ramps, columns, braces, walls (rectilinear or curvilinear), and other interfacial elements. STRUCTURAL TECHNOLOGIES is the exclusive manufacturer of VSL post-tensioning products and construction systems in the United States. pt-structures. Standalone program for analysis and design of post-tensioned slab systems and beam frames: one-way and two-way slabs, flat slabs, slabs with drop panels, waffle slabs, joist slabs, beams (L, T, Commercial : Contact the dealer for quote at [email protected] Objectives The objective of the present report is to summarize the experience available today in the field of post-tensioning in building construction and in particular to discuss the design and construction of post tensioned slab structures, especially post tensioned flat slabs* A detailed explanation will be given of the checks to be carried. Rib spacing of 600 to 1500 mm can be used. tions are given concerning preliminary design and indirect control of deflections in post-tensioned flat slabs. bearing capacity is too low 1. In this context, design is defined as the decision-making process of planning, sizing. slab foundation design Available only as downloadable PDF file. The alternative design proposed was a 250mm thick post tensioned base slab which was tapered to a 700mm thickening at the base of the walls to deal with the wall moments and base shear. Due to presence of piers, the slab cannot move down. The results are compared with results obtained from Rapt, (Analysis and Design Software by PCDC. (The question of whether they are needed is debated in Sec. Post-tensioning is a technique for reinforcing concrete structures. Cables are organized with the instructions provided by the engineer and run through the center of the slab. Using splayed concrete beams, our designers were able to provide an economical post-tension design solution. Analysis of a 45,000 tonne sugar silo constructed from post-tensioned concrete: Background: Strand7 Consulting used Strand7 to perform a finite element analysis on a 45,000 tonne sugar silo. Background information on design theories is followed by discussion of the types of slabs, soil-support systems, loadings, and jointing. bearing capacity is too low 1. first stage post-tensioning tendons (tendons pt-2 and pt-3) are stressed after beams are spliced, tendons are stressed in two. This is part-1. Becker Computerized Structural Design, S. out and have a grade to grade connection as well as a slab to slab connection for. This web site provides structural design software which created using Microsoft Windows Excel 2010/2013 or 2016 Office 365. Design a Post‐Tensioned Flat Slab Design a post‐tensioned flat slab in the East‐West direction for a 3‐bay by 3‐bay structure specified below. For residential construction, tendons at 48 inches on center are common. The results are compared with results obtained from Rapt, (Analysis and Design Software by PCDC. ground floor plan. Homeowners Are Getting Crushed By Flawed Post-Tension Cable Foundations The switch from steel rebar to post-tension cable by Houston area home builders has delivered unmistakable results - post-tension cable foundations are failing earlier and in far greater numbers than steel rebar foundations. The results are compared with results obtained from Rapt, (Analysis and Design Software by PCDC. Although some post-tensioned slab structures had been constructed in Europe quite early on, the real development. These monolithic slabs are typically thicker (8-12” is common) than standard footed slab. ADAPT-MAT® Foundation Design Software Flexible and powerful foundation design tool with integrated load takedown ADAPT-MAT is a versatile three-dimensional (3D) Finite Element (FEM) Analysis and Design software for any configuration of conventionally reinforced or post-tensioned foundation system. Typically used in slabs and beams for buildings, I parking structures, and slabs on grade. Post-tensioning is done onsite by Post-tensioned slabs are use high strength tensioned installing post-tensioning tendons within the concrete steel strands to compress the slabs thickness keeping the form-work in a manner similar to installing rebar. A separate. A Comparative Design of RCC and Prestressed Concrete Flyover along with RCC Abutments K. 1 Concrete A. 5-12 publication: Standard Requirements for Design and Analysis of Shallow Post-Tensioned Concrete Foundations on Expansive Soils. Relevant list of references are presented in Section 8. ADAPT-SOG Slab-on-Grade Design Software: SOG Foundation with Soil Pressure ADAPT-SOG – ADAPT-SOG is a complete three-dimensional (3D) Finite Element (FEM) Analysis and Design tool for the analysis and design of post-tensioned foundations slabs on expansive soils. Post tensioning is a technique for reinforcing concrete. 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. Cables are arranged as indicated by the engineer and chaired to run through the center of the slab. So, the types of concrete slabs are one-way joist slab, flat slab, flat plate, waffle slab, hollow core slab, precast slab, slabs on grade, hardy slab, and composite slab. The construction type is a post and beam steel framed structure with below grade concrete retaining walls utilizing open web floor joists and cold-formed metal stud roof trusses. ACI-360R-10 Guide to Design of Slabs-on-Ground presents information on the design of slabs-on-ground, primarily industrial floors. G+5 stories. ADAPT-SOG is a complete three-dimensional (3D) Finite Element (FEM) Analysis and Design tool for the analysis and design of post-tensioned foundations slabs on expansive soils. Unlike many consultants, TRC has in-house Post-Tension design team which uses advanced software such as ADAPT and ADAPT Builder for PT designs. 360R Design of Slabs on Grade. An industrial floor slab should be durable, free of excessive cracking, suitably flat and able to withstand traffic loads. Established & certified prefabricated system for flat, piled and post-tensioned slabs The weight of a concrete slab, supported directly onto a column, can result in concentrated localised shear stresses, causing the slab to ‘punch’ through the column below. 3 References 2. Three-dimensional (3D) Finite Element Software for Integrated Analysis and Design of Concrete and Post-Tensioned Floor and Foundation Systems. Furnish post-tensioning tendons and accessories to meet structural specifications. Dye, HB, Zapata, C & Houston, S 2006, Geotechnical evaluation of the design of post-tensioned slabs on expansive soils using the PTI third edition procedure for Arizona conditions. Post-Tensioned Concrete Design iv 7. Software for the Design, Analysis, and Investigation of Prestressed Concrete Beams, Slabs and Floor Systems. Other design approaches for post-tension slab-on-grade foundations rely on simplified and approximate methods which largely lead to overly conservative designs. 3 Credits (46 hours): Modeling, Analysis and Design of Low-Medium Rise Buildings with Post-Tensioned Slabs using ETABS and SAFE. Post-tensioning utilizes high quality high strength steel such that 1 kg of post-tensioning strand may replace 3 or 4 kg of ordinary non-prestressed reinforcement. Because minimizing dead loads was essential to the feasibility of the project,. Analyses of Frost-Migration under Post-Tensioned Slabs. ADAPT-PT is the industry standard stand-alone program for the design of beam frames, slabs and floor systems post-tensioned with either bonded, or unbonded tendons. Design a Post‐Tensioned Flat Slab Design a post‐tensioned flat slab in the East‐West direction for a 3‐bay by 3‐bay structure specified below. For residential construction, tendons at 48 inches on center are common. floating slab foundation design Slab on grade and footings must be a monolithic pour. Background information on design theories is followed by discussion of the types of slabs, soil-support systems, loadings, and jo. K Prasad (2014) [2]: Here analysis of voided deck slab and cellular deck slab using Midas civil software is done for various spans ranging from 7m to 15 m. 7 Beam Design 7-10 7. Finally, material specifications are documented in Appendix A. Post-tensioning stress checks are performed for transfer, final, and long term conditions. By the third day, I noticed a crack in the back patio, and by the fourth, there were sprawling cracks throughout the entire foundation. The cast in situ slab can be poured continuously over the supports of precast units placed in series, thus providing continuity to a simple span system. Analysis and Design of Prestressed Box Girder Bridge by IRC: 112-2011 International Journal of Constructive Research in Civil Engineering (IJCRCE) Page | 3 of the nodes to the node forces between elements and, in the same way that slope defection equations. BuildBlock also maintains a library of all models and drawings on CADdetails. Diagram of a Post Tensioned Concrete Slab Post-Tensioning Supplier and Engineering UNBONDED POST TENSIONED SLAB- sleeves stay in place. Using splayed concrete beams, our designers were able to provide an economical post-tension design solution. This guide is intended to provide an introduction to the techniques and procedures used to evaluate and repair unbonded post-tensioned structures. The following example illustrates the design methods presented in ACI 318-05 and IBC 2003. There is A LOT of concrete design software - and rightfully so, because concrete is used in so many ways. we are discusing abt providing pile fondation and for slab , post tensioning or waffle slab. The example presented here is for Two-Way Post-Tensioned Design. The First post-tensioned slabs was constructed of higher strength steel, better attachment hardware, better construction techniques, and simplified design methods, the use of P-T to reinforce structures became more popular. Chapter 5 Concrete Structures Page 5-2 WSDOT Bridge Design Manual M 23-50. Cables are arranged as indicate by the engineer and chaired to run from side to side the center of the slab. In the "Slab on Grade" worksheet of this workbook, off of the main calculation pages and down to the right, I added what I hope is some reasonable rationale in helping the user determine an appropriate stress increase factor to account for the effect of an adjacent 2nd wheel or post load on the slab on grade. Design of concrete and concrete embedment anchors, including post tension and rebar slabs on grade. The column base stiffness is in particular influenced by behaviour of the tension part of the base plate, see [2]. Post-Tensioned Concrete Design iv 7. CYPECAD was brought about to carry out the analysis and design of reinforced concrete and steel structures, subject to horizontal and vertical forces, for houses, buildings and civil work projects. Vaignan, Dr S. To study the behavior of post tensioned flat slabs typical office floor plate of 9. Fully Encapsulated Post Tension Systems The saying goes that a chain is only as strong as its weakest link. ADAPT-MAT® Foundation Design Software Flexible and powerful foundation design tool with integrated load takedown ADAPT-MAT is a versatile three-dimensional (3D) Finite Element (FEM) Analysis and Design software for any configuration of conventionally reinforced or post-tensioned foundation system. The EFM solution is also used for a detailed comparison with the analysis and design results of the engineering software program spSlab. Analysis and Design of Multi Cell Post-Tensioned PSC Box Girder DOI: 10. #2 The slabs are always 6" thick. listed ‘Old Red Cross Building – design and construction stage site reviews; Car park, 289 King St, Newtown – 5 storey reinforced concrete, post tensioned slab construction – design of columns and modelling of lateral system; Aerial Cable Support Structure Macquarie University – catenary structure to. Strength of Concrete Pacific NW aggregates have consistently resulted in concrete strengths, which may. In stadiums, this technique allows highly creative architectural approach and long clear spans. The results are compared with results obtained from Rapt, (Analysis and Design Software by PCDC. • The economy of post tensioned slab versus a conventionally reinforced slab is a function of span length, the span of (7m) is the cross-over point between the two options • Compliance with different building codes and local practice can override the general case. Design Format; Bridge Detailing Guide (view online) Bridge Detailing Guide (download) Bridge Design Guide: Alternate Prestressed Bent or Abutment Designs Standard Operating Procedures. Post tension slabs do have more of a risk then the more expensive rebar slab foundations that still seem to be preferred by local custom builders. edu/10766 to get more information about this book, to buy it in print, or to download it as a free PDF. 2 Design of Structural elements such as Raft foundation, Pile cap foundation, Footings, Retaining wall, Columns, Beams, Ramps, Drop panels, solid slab, ribbed slab, Prestressed and Post tensioning members are based on the output of model by design software MIDAS SET V4. 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. See the FDOT Design Manual (FDM), Chapter 115, for additional information on the use of Standard Plans within FDOT Contract Plans. Resulting designs can include slabs constructed from plain concrete and concrete reinforced with conventional rebar or post-tensioned strands. Analysis techniques and design software have advanced as have techniques for improving durability. Stay tuned for full course. This guide presents information on the design of slabs-on-ground, primarily industrial floors. Post-tensioning is the most versatile form of pre-stressing, a technique which enables engineers to make the most effective use of the material properties of concrete, and so to design structural elements which are strong, slender and efficient. ADAPT-MAT® Foundation Design Software Flexible and powerful foundation design tool with integrated load takedown ADAPT-MAT is a versatile three-dimensional (3D) Finite Element (FEM) Analysis and Design software for any configuration of conventionally reinforced or post-tensioned foundation system. #4 The reinforcing is #4 rebar usually spaced at 12" o. 2 Distinguishing Features and Advantages of Post-Tensioning Construction. ground floor plan. For residential construction, generally tendons at 48 inches are found. Prepared for the PCI Hollow Core Slab Producers Committee John E. Reinforcement with Post Tension Cables. design of flat slabs and given their guidelines in their respective codes. 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. Concrete Slab Perpendicular Flexure & Shear Capacity. This report presents the structural engineering calculations of a post-tensioned flat slab supported on columns, using Hong Kong building code HKCOP 2004 and its amendment of June 2007. 1 - Design shall be based upon controlling moments (ML and MS), shears (VS and VL), and dif-ferential deflections (Δo) for edge lift and center lift swell modes as determined by " Standard Requirements. segmental, ribbed-slab superstructure supported on circular columns that are rigidly connected to the pontoons. I am aware of what PTI and PCA have. 5 was developed to calculate the shrink and swell capabilities of clay soils. Slab Design - Concrete Slab Design - Post-Tensioned Concrete Slab Design - PT Slab - Slab. For residential construction, generally tendons at 48 inches are found. Design in post-tensioned concrete is not difficult and. A couple of cases were comprehensively analyses by ETABS 2015 software and designed manually of both the R. I use the PTI software to design and all the building departments from three states have accepted the design. My background is in structural steel design and construction management. Since post-tensioning was first used domestically, the industry has seen many technological advances. It is based on an Extension of the PTI method (E-PTI). The other issue for these slabs in cyclonic regions is the lack of concrete under the big truss reactions. post tension slab on grade should be an engineer designed system the builder should have a foundation plan with engineer of record stamped seal affixed this plan will have the engineer contact information. 3 Design Beam Torsion Reinforcement 7-23 7. Since 1981, ADAPT has been popular and recognised software for the design of post-tensioned concrete structures. 0 feet Ym (W et Design Envelope with 24 in. pt-structures. Analysis techniques and design software have advanced as have techniques for improving durability. These include post-tensioned, lightweight voided and hybrid slabs to provide flexible layouts, reductions in the quantities of materials used, longer spans, and faster construction. It is free to download, by click software name, for limited version. in Geotechnical Special Publication. Reinforced Concrete Wall Design Basics Mike O’Shea, P. ADAPT-SOG (Slab-On-Grade "SOG") is a complete three-dimensional (3D) Finite Element (FEM) Analysis and Design tool for the analysis and design of post-tensioned foundations slabs, with or without ribs, on either expansive or compressible soils. Other design approaches for post-tension slab-on-grade foundations rely on simplified and approximate methods which largely lead to overly conservative designs. The design is done as. It can model, analyze and design any combination of two-way mat (raft) slabs, individual footings, pile caps or grade beams. The following example illustrates the design methods presented in ACI 318-05 and IBC 2003. The LinkStudPSR System comprises short lengths of carbon steel deformed bar reinforcement with end anchorages provided by enlarged, hot forged heads at both ends, giving a cross-sectional area ratio of 9:1. Construction of post-tensioned slabs on grade is much related to using reinforcing steel, apart from the tensioning step. ADAPT-SOG produces effective, accuratedesigns with confidence. Loads: Framing Dead Load = selfweight Superrimposed Dead Load = 25 psf partitions, M/E, misc. Stud welding of. Later on, you may develop a spreadsheet or use some patent software to do it using a computer. Background information on design theories is followed by discussion of the types of slabs, soil-support systems, loadings, and jointing. 5 was developed to calculate the shrink and swell capabilities of clay soils. Are you an ASCE Member? We recommend that you register using the same email address you use to maintain your ASCE Member account. Typically used in slabs and beams for buildings, I parking structures, and slabs on grade. Calculators for structural engineers, construction professionals and steel building specifiers. 2 and SAP2000 v21. Some of the main advantages are described below. Co Ordinate with the Post Tension Specialist. A decrease in moments from solid to voided slabs is about 11%, 7% and 5. INTRODUCTION tensioned slabs were designed and constructed using the lift slab method. This can help to minimize cracking and differential settlement in adverse conditions. #2 The slabs are always 6" thick. Stiffened Slab on Grade Elevated Structural Slab on Piers Stiffened Slab on Grade and on Piers Thin Post Tensioned Slab Figure 1. The structure has been analysed and designed for the typical floor. We are dedicated to providing the construction industry with engineering expertise, responsive service and manufacturing excellence to ensure safe, timely and cost effective installations, restorations and repairs. Cables are set up as per instructions of the engineer and placed to go over the center of the slab. Ram Jack® hydraulically-driven steel-pressed piers were driven on the perimeter and on the interior load-bearing walls wherever practical. Proper Post Tension Tendon Inspections Help Prevent Bridge Disasters October 2nd, 2017 Author: Doug Thaler Since its initial development, the use of post-tensioned reinforcement has been used to construct concrete structures so that concrete slabs can result in thinner sections and/or longer spans between supports. Concrete Slab Design Software Economically design post-tensioned and reinforced concrete floors including slabs, mats, and rafts, with exceptional visibility into compliance, efficiency, and practicality. COMMERCIAL OPPORTUNITIES CCL post-tensioning results in thinner concrete slabs. This feature does the verification and optimization of pre-stressed concrete beams with pre-tension and sequential or non-sequential post-tensioning cables. the design of the foundation is performed by a licensed engineer. How to Calculate Fastener Pullout. When an anchor’s overall design strength, for both tension and shear, is equal to the design strength of anchor rod steel element, and all potential concrete failure modes have design strengths greater than the anchor rod steel element design strength, this anchor design is considered as ductile anchor design. SIA = Special Investigative Area (aka High Risk Area). ARMATA ® can be used in slab-on-grade foundations and in elevated slabs, such as reinforced concrete slabs or post-tensioned slabs, where ARMATA ® can eliminate the need for drop panels or column capitals, thus reducing forming and concreting costs. 3-14 is illustrated in detail in this example to analyze and design two-way flat slab with drop panels system. Chapter 15 covers the slab on grade industry, which represents more sales of post-tensioning tendons than all other post-tensioning applications combined. For example, a slab that is 6 inches thick might have rebar marked as size 6 or 3/4-inch. in flat slabs and post-tensioned slabs, at slab to shearwall junctions, beam to col-umn junctions and within footings and foundation slabs. Is that one of those post-tensioned slabs with a thickened perimeter? If so you definitely need an engineer who knows about post-tensioned slabs. Simpson Strong-Tie® Anchor Designer™ Software is the latest anchorage design tool for structural engineers to satisfy the strength design provisions of ACI 318-14 Chapter 17 / ACI 318-11 Appendix D, CAN/ CSA A23. 0) more details. is it safe for 44ft by 46ft span? i have uploaded the plan. 13-May-2019- Post-tensioned concrete slabs in buildings provide various benefits over reinforced concrete slabs & other structural systems toward both single and multi-level structures. Tendon layouts can be designed to allow for future cores, knockouts, and openings. If a floor slab is restrained from moving freely, the shrinkage produces tensile stresses within the slab. open stairs to grade with the on grade slab being asphalt paving. Concrete Foundation Anchor Bolts Design & Selection: An anchor bolt is used to attach objects or structures to concrete. segmental, ribbed-slab superstructure supported on circular columns that are rigidly connected to the pontoons. It also ensures a fast redeployment of. Post-tensioning is a technique for reinforcing concrete structures. Co-ordinate with Architects, MEP Engineers etc. outside the shrinkage area unless you have massive amounts of steel or a post tensioned slab. 1 Design Program Software for Slab on Grade 35 3. Post Tensioning Post-tensioning is a method of reinforcing (strengthening) concrete or other materials with high-strength steel strands or bars, typically referred to as tendons. Post-Tensioned Slab-on-Grade: The Solution for Soil Stability Challenges Soil stability must be a consideration in the design and construction of any type of structure, irrespective of the region or surface appearance. ADAPT-SOG is a complete three-dimensional (3D) Finite Element (FEM) Analysis and Design tool for the analysis and design of post-tensioned foundations slabs on expansive soils. It is written in mandatory code language with commentary. design of structures (dos) online 2,398,320 views 8:43 Foundation Construction New Style - How To Build and Setup a Concrete Foundation For Houses Part 1 - Duration: 19:19. Suspect soils or specific soils report requirements may require design of structural slabs (thickened slabs with rebar or post-tensioned slabs, etc). In continuous or indeterminate post-tensioned structures the moments due to the prestressing. Construction of post-tensioned slabs on grade is equivalent to apply reinforcing steel, devoid of the tensioning step. Stay tuned for full course. Over ten years of experience in the field of structural engineering, emphasis on bridge and building, cover wide range of design, construction review, inspection and project coordination. This is particularly true for post tension cable systems. Maximize your software investment with one fully integrated application suite offering complete building analysis, design, and drafting for both steel and concrete structures. • reducible loadcases are reduced • combinations incorporating reducible loadcases are reduced • The reduced results are used in slab design. Perform slab design with post-tensioning Software Products This steel connection design add-on will work with CSi's ETABS 18. These dowels allow for initial shrinkage to take place and then are locked in position with a mechanical plate and a controlled amount of epoxy resin. Each assembled girder was subsequently post-tensioned (Stage I Stressing) for the assembled girder dead load and for the slab dead load, and the ducts were grouted. There are post-tensioning applications in almost all facets of construction. The low-rise has a straight plan alignment profile SR 520 EVERGREEN POINT FLOATING BRIDGE LOW-RISE SUPERSTRUCTURE / SEATTLE AND MEDINA, WASHINGTON BRIDGE DESIGN ENGINEER: International Bridge Technologies Inc. The program also contains a Database, facility allowing user to save, search projects; PTsog: A standalone program for the design of Post-Tension (and Reinforced) Slabs-On Grade (SOG). #2 The slabs are always 6" thick. Overview SAFE is the ultimate tool for designing concrete floor and foundation systems. 3 Design Beam Torsion Reinforcement 7-23 7. We are dedicated to providing the construction industry with engineering expertise, responsive service and manufacturing excellence to ensure safe, timely and cost effective installations, restorations and repairs. The Elastic Frame Method (EFM) presented in CSA A23. The thickness of slab and drop was 200/400mm considered based on the standard span / depth ratio of post tensioned flat slabs. Strength of Concrete Pacific NW aggregates have consistently resulted in concrete strengths, which may. Unlike all the cracks described above, drying-shrinkage cracks usually extend over the full width and depth of the slab. Size of drops is 3. Background information on design theories is followed by discussion of the types of slabs, soil-support systems, loadings, and jointing. 2mm) suitable for suspended high rise construction, to complex multi strand systems used in heavily profiled transfer slabs. Flat slab is defined as one sided or two-sided support system with sheer load of the slab being concentrated on the supporting columns and a square slab called ‘drop panels’. 8 Slab Design 7-28 7. post tension slab on grade should be an engineer designed system the builder should have a foundation plan with engineer of record stamped seal affixed this plan will have the engineer contact information. Design in post-tensioned concrete is not difficult and. Post-Tensioned Concrete Design iv 7. 2 and SAP2000 v21. I am aware of what PTI and PCA have. Post tensioned slabs have, as noted gained in popularity over the years especially with the local San Antonio volume builders, mostly due to cost factors and even due to time factors. 4m and bars can be supplied cut to any length. So the slab-on-grade is not really providing a structural value per se at that point. The control strip is left open to allow each slab region to shorten, and is then closed by filling it with concrete. Inserting tendons in the concrete is a very tedious and time-consuming procedure, even if we do it just as 2D annotation. construction and inadequate design of the post-tensioned slab-on-grade foundation systems. Several methods exist for pre-stressing concrete, with post-tensioning being a very common one. The preliminary design is limited to the design of an interior girder. It can be applied to an individual slab item - you don't have to apply a single value throughout a slab or mat (this can be important if you have discrete transfer panels within a large slab area). Villas at the Rim- Paraking Garages Elevated Post Tension one way Slab and Beams 6. The design is done as. Post-tensioning is done onsite by Post-tensioned slabs are use high strength tensioned installing post-tensioning tendons within the concrete steel strands to compress the slabs thickness keeping the form-work in a manner similar to installing rebar. SIA = Special Investigative Area (aka High Risk Area). Unlike all the cracks described above, drying-shrinkage cracks usually extend over the full width and depth of the slab. Post-Tensioned Slab-on-Grade Foundation 3D FEM Design Software ADAPT-SOG Product Overview ADAPT-SOG is a complete three-dimensional (3D) Finite Element … Reinforcing steel in slabs on grade - Concrete Construction. design of structures (dos) online 2,398,320 views 8:43 Foundation Construction New Style - How To Build and Setup a Concrete Foundation For Houses Part 1 - Duration: 19:19. Create a new account. 3 References 2. Instead of using welded wire or conventional rebar to reinforce the slab-on-grade, post-tensioning tendons are cast in the middle of the slab, running in both directions. It is free to download, by click software name, for limited version. Grouting Services was awarded subcontract for the design and construction 12,000sq. This report presents the structural engineering calculations of a post-tensioned flat slab supported on columns, using Hong Kong building code HKCOP 2004 and its amendment of June 2007. compared to solid slab for bridge design. Today most slab homes and buildings here are monolithic pours with the rebar going from the footings through the slabs, even garage slabs are now monolithic pours. Each strand is anchored by means wedge and. Stay tuned for full course. The following example illustrates the design methods presented in ACI 318-05 and IBC 2003. Post-tensioned concrete slab is a method for overcoming concretes natural weak in tension. Spanning nearly 45 feet, the 11 inch thick post-tensioned flat slab floor system has 25% less weight than traditional slab systems. Post tension slabs do have more of a risk then the more expensive rebar slab foundations that still seem to be preferred by local custom builders. Rib spacing of 600 to 1500 mm can be used. This can reduce congestion in members. Spread Sheet For Civil Engineers (part 2) May 26, 2016; DOWNLOAD LINK This collection includes following spreadsheets under following categories. The post-tensioning can also be applied at the joint panels without use of the central stressing panels. For residential construction, tendons at 48 inches on center are common. The design moment of the slab is modified for each design section to include the twisting moment of the same section (Wood-Armer) approximation. PTI Design Criteria Edge Lift Condition Center Lift Condition (S hrink) em 5. Post-Tensioned Concrete Design Table 1-1 List of Symbols Used in the ACI 318-08 Code M bal Design moment resistance of a section with tendons and the necessary mild reinforcement to reach the balanced condition, N-mm M u Factored moment at section, lb-in N c Tension force in concrete due to unfactored dead load plus live load, lb P. The First post-tensioned slabs was constructed of higher strength steel, better attachment hardware, better construction techniques, and simplified design methods, the use of P-T to reinforce structures became more popular. Post-tensioning has gained in popularity with bridge designers using precast segmental construction. What is post tension slab, Advantages and disadvantages of post tension slabs: Although concrete is a strong material for construction, it is not resistant to breakdown especially where longer concrete slabs are required like in a bridge or a length of a beam. Software Development for Prestressed Structures - Post-Tensioned Slab-On-Grade Design (Industrial. The Ice Monster David Walliams.