Learn more about the custom anchor rod program with diameters up to 212 in. A headed anchor bolt and welded stud design using anchor reinforcement as per aci 31811, aci. Our software asdip steel will be used to support our discussion. Headed anchors include conventional square head or hexhead threaded bolts. Design of base plate and anchor rods for biaxial moments. We offer a full array of mechanical and adhesive anchors and tools for concrete and masonry applications. Code compliant anchor designs according to aci 31814 and csa. One of the first things i learned in school about using load combinations was that you had to pick either load and resistance factor design lrfdstrength design sd or allowable stress design asd for a building and stick with it, no mixing allowed. Follow the links below for more information about the type of anchor bolt you require for your project. Anchor bolt design the complex aci provisions part 1. Below is a typical anchorage design report in asdip steel. Ds anchor allows the designer to select which specific anchors take shear or tension.
Jan 15, 2020 for a more detailed overview of anchorage design please see the blog post anchor bolt design the complex aci provisions part 1. Hsl3 heavy duty anchor anchor fastening technology. For such columns, the simple columnbaseplate connection detail shown. Discussion of the aci 318 provisions on anchor bolt design, including the. Because of this, shear lugs, embedded columns, or other alternatives are likely better options for transferring shear unless the loads are small. Design of headed anchor bolts, engineering journal, american institute of steel construction, vol.
Castin gives greater control, but less flexibility headed bolts are cylindrical threaded steel bars terminated in the concrete either by an integral head or nut, either of which may include a washer or plate. The simplest and strongest form of anchor bolt is castinplace, with its embedded end consisting of a standard hexagonal head bolt and washer, 90bend, or some sort of forged or welded flange see also stud welding. When an anchors 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. The realtime design is visually represented in a fullyinteractive 3d graphic user interface, supports imperial and metricsized simpson strongtie mechanical and adhesive anchors, and offers castinplace solutions. The aci treats separately tension and shear, and then it combines both effects in an interaction diagram. Headed anchor bolts are different from bent anchor bolts or anchor rods, because the nonthreaded end has a forged hex, heavy hex or square head. Anchor bolt design spreadsheet anchor reinforcement aci318. Anchor bolt design spreadsheet anchor reinforcement aci 318. Columnbase is integrated software for analysis and design of columnbase connections.
Model and see instant results with realtime 3d graphics and dynamic results. May 02, 2018 base plate and anchor rod design example using asdip steel. Structure magazine using software to control anchor design. Design of headed anchor bolts american institute of. Few things are more important in concrete construction than choosing the right adhesive anchor and anchor rod for your application. The benchmark for anchor design become a real anchor profi. Alternatively, if governed by masonry breakout or anchor pullout, design to resist not less than 2. Jun 03, 2016 design guide 1, 2nd edition base plate and anchor rod design 21 anchor rod design for structures subject to seismic loads and designed using a response modi.
Allfasteners own anchorfos anchor design software is easy to use, fast and. Previous designs from existing simpson strongtie anchor design software may be uploaded into anchor designer, and the detailed output is provided in convenient pdf format. That way, the rod will yield before the concrete fails in bearing under the head. Designfix is an allpurpose anchor design software for manufacturers of. The spreadsheet is designed to find the embedment strength of a determined anchor bolt or bolts within certain concrete parameters. While every care has been taken in the preparation of the software, errors in the program and the cad libraries cannot be fully excluded.
Headed bars are a simple and effective alternative to hook bars for concrete reinforcement. Headed concrete anchor weld stud specifications weld stud packaging weld stud weights d diameter l. Hsl3 heavy duty anchor carbon steel 09 2015 1 anchor fastening technology manual hsl3. Jun 12, 2017 how to design anchor fixing into concrete with the hilti profis engineering. Embedpl2 embedment strength of stud plate program description. A anchor bolt seismic design and anchor bolt ductility as per aci 31811 and aci31808 clause d. Multiple anchor layouts allow for up to 16 anchor bolts in a single base.
Reduce the variety of anchor rod settings specify one anchor rod setting and base plate. Our cloudbased anchor design software enables automatic and advanced calculating, easy specifying and integrated bim modeling increasing productivity and improving value. Headed steel stud anchorsheaded steel stud anchors in. The last are used in concretesteel composite structures as shear connectors. The design provisions for anchor bolts using the strength design method is nearly identical to that used for allowable stress design, with appropriate revisions to convert the requirements to produce nominal axial tension and shear design strengths. Portland bolt manufactures and stocks plain finish and galvanized headed anchor bolts, threaded anchor rods, and bent anchor bolts from 12.
Because of the reduced minor diameter in the theads at the junction of the pseudo hex head and the threaded rod, in certain applications, this design may provide less strength than an anchor bolt with a forged head. Apart from these, we also manufacture other concrete anchor bolt configurations such like anchor rods, headed anchor bolts and swedged rods. Castin anchors are of three 3 types, headed bolts, headed studs, and hooked bolts, installed in place prior to concrete placement. Therefore, halfen gmbh cannot accept responsibility if the results reached with this software or cad libraries contain errors. The headed end will be embedded in the concrete foundation, while the opposite end is threaded and will project from the concrete. Anchor version sizes benefits screws hsl3 bolt version hsl3g threaded rod version hsl3b safety cap version hsl3 sh hexagonal socked head hsl3sk countersunk. Design so that anchor strength is governed by steel tensile or shear yielding. Headed anchor rods lobstaeata structural 15 dec 08 18. A concrete anchor is a steel shaft either cast into concrete at placement or postinstalled after the concrete has hardened. Both shear and tension are transferred through anchor bolts to resist design forces such as uplift due to wind.
The design of anchor rods has become complex and cumbersome with the development of the aci 318 provisions, originally in the appendix d of the aci 31811 and earlier, and now in the chapter 17 of the aci 31814. Designing anchors to concrete over metal deck has never been easier with this. Base plate and anchor rod design overview asdip steel. A headed anchor bolt is a rod that is heated on one end and then forged into a hex, heavy hex, or square shape. If anchors rods are used to resist shear forces from a base plate, they may also be subject to flexure. Sleeve type, bolt type, capsule system, injection system, material types, head types. Carbon and stainless steel anchor rods for use with chemical adhesives in concrete and masonry and other base materials. Many common anchor rod problems are easier to avoid than you think. Quickly compare up to 3 similar or different anchors. Concrete anchorage for asd designs simpson strongtie. This method, the concrete capacity design ccd method is based on extensive research and supersedes and is much better the old method using 45 degree cones. The anchors should be designed to yield before concrete failure to ensure ductility. Oct 02, 2016 anchor rods are usually subjected to a combination of tension and shear forces.
Anchor rods typically have a nut andor anchor plate embedded in the concrete foundation to provide pullout resistance. Hilti profis engineering software concrete construction magazine. Access cloudbased truspec v3 via web browser from your computer or mobile device. The design of anchor rods implies multiple limit state checks for tension and shear. It features a plate washer at the embedded end sandwiched between two fixed hex nuts and a head stamp for easy identification after the pour. Aci 31814 aci 31811 aci 318m14 metric aci 318m11 metric csa a23. Concrete side face blowout strength of headed anchor in tension 17. Aisc design guide 01 base plate and anchor rod design 2nd ed. Powers design assist realtime anchor design software. Allfasteners free anchor design software anchorfos. Red head concrete anchoring and reinforcing solutions. The right pairing affects performance, costeffectiveness and productivity. On each splicing rebar, an end anchor is mounted at the end. Headed bars rebar end anchors compact alternative to.
Anchor bolt design spreadsheet anchor reinforcement aci31808. Carbon steel, zincplated 9 stainless steel, a4 5 internally threaded 2 mesh sleeve 1 metre rods 1. Base plate and anchor rod design example using asdip steel. Headed anchor studs are used in all types of concrete connections. The part 1 of this post will discuss the tension anchor bolt design. Astm f1554 anchor bolts can be straight rods either fully threaded or threaded on each end, bent anchor bolts, or headed bolts. Risabase is a handy application that is designed to help structural engineers to analyze the behavior of complex base plate and anchor bolt models. Creating accurate designs and bills of materials for hilti products has never been easier. Using software to control anchor design structure magazine. Anchor bolt embedment depth aci concrete code issues. Hilti profis engineering, anchor channel and anchor selector app. Aisc steel design guide 1, base plate and anchor rod design. A headed anchor bolt and welded stud design using anchor reinforcement as per aci 31811, aci 31808 appendix d clause d. In current practice the design of base plates is controlled by bearing restrictions on the concrete.
Analytical approach of anchor rod stiffness and steel base. Mechanical anchors, adhesive anchors and castinplace headed anchors. Concrete anchor calculations according to aci 318, csa a23. Our anchor systems, like all of our others, have passed the high performance and quality standards that are expected of simpson strongtie and include the. Haninger in current practice the design of base plates is controlled by bearing restrictions on the concrete see fig. The pab anchor bolt is a versatile castinplace anchor bolt ideal for hightensionload applications, such as rod systems and shearwalls. Anchors are available into two standard sizes to provide a net bearing area 4 or 9 times equal to the cross section area. The headed end is embedded into concrete foundations to secure structural steel columns, light poles, bridge rail, and substation structures. The next thing i do is size the platenut such that i have adequate bearing surface area of the plate or nut to develop the full capacity of the anchor rod, using the aci equations for bearing on concrete. Our cloudbased anchor design software enables automatic and advanced calculating, easy. Find products, place them in your 2d or 3d design, and customize anchor and structural support systems. How to design anchors for concrete with the hilti profis. Anchor designer can calculate single anchor solutions or up to 16 anchors in a single plate.
Note that the interaction of tension and shear usually controls the design of the anchor rods. Anchor bolt design with tension, shear and moment using. The hilti hitz anchor rods with a coneshaped helix design are specifically made for maximum performance and time savings with our safeset technology installation. If for the single headed anchor is less than, the value of shall be multiplied by the factor where. Drill your hole, clean the hole, and insert the hilti chemical anchor adhesive followed by the hase threaded steel rod to complete your anchoring project quickly and effectively. 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. Code compliant anchor designs according to aci 31814 and csa a23.
The allowable axial tensile load, ba, for headed and bentbar anchor bolts is taken as the smaller of equation 3, allowable axial tensile load governed by masonry breakout, and equation 4, allowable axial tensile load governed by anchor yielding. Base plate design is very important, particularly for structural columns subjected to compression, shear, and bending. Fill out the form below to download the dewalt design assist dda software. Asdip steel includes the design of base plates and anchor rods, with multiple options to optimize the design easily. Anchor s ductility is its own characteristic related to anchor rod material, embedment depth, anchor bolt. Demo of hilti profis engineering suite anchor design software duration. Hilti profis engineering software is designed to make users more productive. How to design anchors for masonry with the hilti profis engineering suite software duration. The spreadsheet is designed to find the embedment strength in concrete for the required plate within certain concrete parameters. Civilbay anchor bolt design software is a complete anchorage design software for structural engineers to satisfy the design provisions of aci 31814, aci 31811, aci 318m14, aci 318m11 and csa a23. Typesofcastinplaceanchorrods2 the mechanism by which the load is transferred from the headed anchor rod to the concrete foundation involves two stages. Civilbay anchor bolt design software using aci 31814 and csa a23. This worked for the most part since many material design standards were continue reading concrete anchorage for asd designs. Example a1 single stud, tension only example a2 single stud, shear only example a3 single stud, combined tension and shear example a4 anchor bolt, combined tension and shear example a5 single rebar, combined tension and shear.
Both hilti profis anchor and powers design assist allow the designer to select from anchor group templates that have slotted holes to prevent the application of shear to specific anchors. For such columns, the simple columnbaseplate connection detail shown in figure 1. Our inventory of ready to ship anchor bolts includes an array of anchor bolts in the astm grades f1554 grade36, f1554 grade 55 and a307 grade c. Anchor bolt or anchor stud design using aci 31811 or aci. Astm a307, grade a astm a307 does not have a specified yield strength tms 402 commentary recommends a yield strength of 37 ksi.
How to design anchors for concrete with the hilti profis engineering suite software hilti group. Risabase base plate and anchor bolt design software. The most userfriendly anchor design software is now even better, allowing you to do more types of anchor designs from anywhere, be that in the office or out on the jobsite. Anchor rod design example using asdip steel youtube.
Free anchor calculation design software with userfriendly interface. Some incorporate baseplate design, include headed studs for embed plate design, or permit. These anchors threaded design makes it easier to fasten when you are working with various fixture thicknesses. This document covers the required steps in the process of the design of the castin anchor rods normally encountered in column base plates. Design of headed anchor bolts american institute of steel. Maximize your productivity with our most complete anchor design software.
The nut andor plate are often welded to the bottom of the anchor rod. Login using your hilti username and password or register for your 30day trial and try profis engineering suite premium today. Anchorage alternative to hook bars and long development length. Mar 16, 2020 anchor designer can calculate single anchor solutions or up to 16 anchors in a single plate. Shear in anchor rod for base plates with grout pad or standoff.
The codes and best practice require that the diameter of an anchor bolt hole not exceed the diameter of the anchor bolt by more than seismic design manual. Base plate and anchor rod design overview asdip steel software. Embedment design examples reported by aci committee 349 aci 349. Bentbar anchor bolts must meet the material requirements of standard specification for carbon structural steel, astm a36a36m ref. With the hilti hitz anchor rod, you can skip the holecleaning process and go right from drilling the hole to inserting the adhesive and setting the anchor, which saves up to 60%.
363 767 471 368 115 1097 112 666 119 172 1516 1017 690 1592 482 901 548 1345 111 1560 240 234 1083 152 961 1519 755 194 1200 1162 1657 471 1484 434 888 1259 452 310 1169 732