This technical guide includes the technical data you need for general fastening to concrete or steel, ceiling fastening systems, grating and checkerplate fastening systems, steel. In hilti profis, the process of calculating shear capacity for anchors sitting on grout follows etag 001 annex c european guideline considers flexure in anchor. A substantial amount of data scatter in the testing of concrete expansion anchor bolts is expected and this data scatter was considered in selecting the appropriate safety factors for design purposes. Forcecontrolled expansion which allows followup expansion. It means every mechanical anchor, removable screw anchor and adhesive anchor comes with confidence, security and trust. Deformation capacity is the result of a combination of hole elongation in the fastening leg of the connector, bending. Design of anchor reinforcement in concrete pedestals. Hilti is unconcerned with any free water coming from partially aged concrete which seems to be the gist of aci 31811 rd2. Hilti anchor rod specifications and technical data dbs 0218 the following steel design information is for hilti standard threaded rod lengths and hitz anchor rods according to the material specifications on page 2, used in conjunction with hilti adhesive anchors designed in accordance with aci 318 chapter 17. Hilti services the professional construction industry. Hsl3 heavy duty anchor carbon steel 09 2015 2 hsl3 heavy duty anchor, carbon steel anchor version sizes benefits screws hsl3 bolt version hsl3g threaded rod version hsl3b safety cap version hsl3 sh hexagonal socked head hsl3sk countersunk version m8m24 m8m24 m12m24m8 m12 m8m12 suitable for noncracked and cracked. See how to tackle shorter anchorage lengths, shear reinforcement, shear.
How to install hilti kwikbolts concrete fasteners, inc. Get free 2day shipping on qualified hilti, anchors products or buy hardware department products today with buy online pick up in store. The shear capacity given in the tables must be reduced for large packings, large grip lengths, kidney shaped slots or long joints when applicable. For example, the capacity in tension corresponding to the.
The nominal steel strength in shear, vsa, of a single anchor in accordance with. Sl chan department of civil and environmental engineering. Testing was done according to the aisi s905 test standard. Anchor design systems hilti zimbabwe hilti zimbabwe shop. For this reason, anchorages in this region where plastic hinging is expected to occur, such as the base of shear wall, joint regions of frames, spandrel beams, should be avoided unless suitable design measures are taken 1. The capacity for a given spacing of bolts is found by division of that spacing. Provides a hilti own design method for moment resisting connections frame node. Undercut anchors like the hilti hda offer much greater resilience to variations in the base material conditions and represent the most robust solution for most anchoring needs. The nominal steel strength in shear, vsa, of a single anchor in accordance with aci. Evaluation of the fire resistance for the hilti stud anchor hsa shear bad. The basis of the design is the punching shear resistance of the existing slab without. As far as i can figure, a grade 8 bolt, 12 inch, has a tensile strength of 150,000 and a shear strength of 60% of 150,00090,000 per square inch. This technical guide includes the technical data you need for general fastening to concrete or steel, ceiling fastening systems, grating and checkerplate fastening systems, steel deck fastening systems, and screw fastening systems. Anchor fastening technical guide volume 2 edition 19 hilti.
For shear loads acting parallel to this edge, the concrete resistance vrd,c can be multiplied by the factor 2. Hilti 2011 anchor fastening technical guide buildsite. For bolts through concrete, loaded in double shear equal both sides, and far from any edge, what design procedure would you follow. Additional hilti technical data, supplementing the eta technical data, may. For shear loads acting parallel to the edge the anchor row closest to the edge is checked to resist half the total design load. All single and groups of adhesive anchors failed due to the steel fracture and bearing failure of the concrete in front of the anchors. The kwikbolt 2 comes before it and the original wedge anchor being called the kwikbolt. Fastening technology manual dynamic design for anchors hilti. Jul 12, 2012 the lap shear test in this video compares the ductile performance of two hilti xenp powder actuated deck fastener vs. Where anchors are loaded simultaneously in tension and. Page 1 of 87 guide on design of postinstalled anchor bolt systems in hong kong dr.
Depending on the extent of cracking or splitting, the anchor could experience a reduction in loadcarrying capacity or undergo complete failure during installation. Mechanical anchoring systems hsl3 heavyduty expansion anchor 3. The engineer has requested an adhesive anchor bolt be proposed with stamped calculations as an alternate. In ribbed bars the resistance is prevalently due to shear behavior of concrete.
There seems to be no means by which to turn off the etag bolt shear check and use other methods to verify the bolt bending capacity. In order to activate the reinforcement, the opening of the shear crack is initiated. The anchorage length is reduced up to 70% compare to the ec2 design. Higher strength bolts, such as astm a 325 bolts, are available and can be used, but are more expensive. Assuming a rigid base plate condition, hilti s profis. With performance values that meet or exceed the kwik bolt ii, the kwik bolt 3 boasts the best approval ratings in its class. Mechanical anchoring systems kwik bolt tz expansion. Anchor fastening technical guide volume 2 edition 19. Adhesive hilti hitre 500 strengthening anchor type hzap m16 niche depth for lower anchorage hinf 40 mm maximum hei ght of shear reinforcement maxd x. Anchor bolts are used to connect structural and nonstructural elements to the concrete.
Hsl3 heavy duty anchor anchor fastening technology. The connection is made by an assembling of different components such as. Mechanical anchoring systems kwik bolt tz expansion anchor 3. Post installed anchors in green concrete structural.
The shear capacity given in the tables must be reduced for large packings, large grip lengths. May 22, 2015 a copy of the revised ultimate tensile capacity values for the 12inchdiameter hilti kwik bolts is provided in attachment 1. How to design anchor fasteners using hilti design knowhow including hilti s specialist anchors, software and engineering services. Thats because no other manufacturer combines forwardthinking product development with decades of reallife feedback and experience from the jobsite. Im trying to work up how many bolts i need to hold up a ledger board actually angle iron for a landing. Hilti anchor rod specifications and technical data june 2018 the following steel design information is for hilti has threaded rods according to the material specifications on page 2, used in conjunction with hilti adhesive anchors designed in accordance with aci 318 chapter 17. The shear deformation capacity of an adhesive anchor is defined as the anchor slip corresponding to its shear strength.
Fastening postinstalled shearreinforcement hiltihzap. Mechanical anchors do not have the installation and inuse temperature restrictions of their adhesive anchor counterparts, and can be loaded immediately after installation. Tensile capacity of short headed anchor bolts embedded in. Power tools, fasteners and software for construction hilti. 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. A washer placed against the bolt head is often used with the inten. Mechanical and chemical concrete anchors, chemical anchoring systems for rebar, and masonry anchors. The kwikbolt that hilti currently sells is called the kwikbolt 3. Kb3 product load tables for kwik bolt 3 expansion anchor 101916 kbv product load tables for kbv expansion anchor 12714 khez product load tables for kwik husez screw anchor 101916.
The shear strengthening behaviour of rc beams, when applying frp strips externally with or without anchoring, is studied. The capacity in bearing multiplied by a bearing area factor cb 1. Both aci 318 and the international building code conservatively assume cracked concrete as the baseline condition for the design of castinplace and postinstalled anchors since the existence of cracks in the vicinity of the anchor can result in a reduced ultimate load capacity and increased displacement at ultimate load compared to uncracked. All hilti adhesive anchor systems suitable for use with the. Red head concrete anchoring and reinforcing solutions. Hilti anchors fasteners the home depot store finder. Assuming the bolt is cast in, or otherwise completely encased within the concrete matrix, would bending of the bolt have to be considered.
At hilti, we work hard to help build a better world. And thats wet as in its raining or somebodys spilled their big gulp. February 2014 page 245 hda design anchor design process for typical anchors layout in non cracked concrete background of the design method. The design of anchors is based on an assessment of the.
Hilti s newest generation of kwik bolts the kwik bolt 3 carbon steel expansion anchors is raising the industry standard for wedge anchors. Attached are pages from the 2014 hilti north american. Reduction of anchorage length is possible when edge distance and spacing are large enough based on hilti own testing. Critical spacing and critical edge distance for splitting failure apply only for noncracked concrete. The kwikbolt has been in existence for many years and has gone through a number of changes. I must use anchors that meet the following specs, pull out strength 18,000lbs, and shear strength 22,000lbs. This research studied the breakout capacity of castinplace single shortheaded anchor bolts embedded in both normal and high strength steel fibrous reinforced concrete.
The hilti xhvb shear connector is a mechanically fastened shear transfer device for use in composite beam construction as an alternative to welded nelson studs. Hilti hilti south africa power tools, fasteners and. Hilti s mechanical anchor portfolio offers low capacity removable screws and sleeve anchors, mediumduty wedge anchors, and high capacity expansion and undercut anchors. What critical and minimum edge distances should i use for adhesive anchors. In 20 hilti released the hilti hitz anchor rod as part of hilti safesettm technology along with the new hilti hithy 200. Hilti wedge anchors concrete fastening systems, inc. Hilti hitv and has threaded rod and hilti hitz anchor rod. Ask hilti is an online community offering continuing education credits and expert advice from top engineering professionals. We offer software for design, products and tools for work onsite, training, testing and consultancy. Values of the design resistances are obtained from profis 2. Variable embedment depths for highest tension and shear loads in cracked and. Dynabolt sleeve anchor technical data anchor installation bolt minimum anchor fc 2000 psi. No different loads are acting on individual anchors no eccentricity.
For all those anchors holding a european technical assessment eta, noted in the cover with the respective icon, the technical data given in this manual is based and in accordance with the information given in the respective eta. This is because, connections are more complex than members to analyse, and the discrepancy between analysis and actual behaviour is large. The reduction factor that hilti specifies is for adhesive anchors installed in a wet hole. Hsl3 anchors are available in metric sizes from m8 to m24. For applications such as a four bolt or six bolt anchor pattern. For technical data for anchors in diamond drilled holes please contact the hilti technical advisory service. While hilti does not include the increase in published capacities for anchors in concrete, it is the responsibility of the designer to determine the appropriateness of such a capacity. Load displacement diagram for the hilti xhvb shear connector the connectors loadbearing capacity in solid concrete slabs is limited by the performance of the nailed joint. Profis anchor performs calculations for castinplace anchors and hilti postinstalled anchors in accordance with the strength design provisions of aci 318 and. Anchor shear capacity with grout structural engineering. These shear transfer connectors need to be attached to the steel structural members before the concrete slab is poured.
Shear strength properties of hilti plain and indented strand. Just done a calc of foundation anchor bolts using hilti online software. Anchor reinforcement consists of longitudinal rebar and ties to carry anchor tension forces and shear forces, respectively. Hilti profis anchor represents the next generation in anchor design software. Anchor analysis and design software performs a simplified finite. This is done by subjecting six specimens of prototype dimensions with or without such strengthening to fourpoint bending. Shear strengthening of rc beams with frp strips and novel. If so, this product was evaluated under the allowable stress design asd design provisions, which did not have evaluation for cracked concrete, and thus no test data to reference. Both shear and tension are transferred through anchor bolts to resist design forces such as uplift due to wind. Vs n as fut 1 where vs nominal shear strength of a single headed stud or group of headed studs governed by steel strength lb. Behavior of adhesive bonded anchors under tension and shear.
Castin anchors are of three 3 types, headed bolts, headed studs, and hooked bolts, installed in place prior to concrete placement. Single anchor capacity tables show the design strength for. Hilti design anchor hdat m12, anchoring in cracked concrete. Engineers see how hiltis designed anchor fasteners specifically for cracked concrete, handrails and base plates. Hilti product technical data excerpts anchors revised december 7, 2016. See how your daily applications and your most critical engineering challenges can be served by our fasteners such as chemical anchors, mechanical anchors, castin, insulation fasteners, nails, threaded studs and different types of screws. Screw fastening systems wife seriing screws hilti, inc. Hsl3 heavy duty anchor july 2014 page 283 design process for typical anchors layout in non cracked concrete background of the design method. Profis anchor and the simplified tables seem to indicate different minimum edge. Bolted connections i version ii 33 1 bolted connections i 1. Sleeve anchors combined tension and shear loadingfor dynabolt anchors. Qualification procedures for anchors do not currently anticipate such large crack widths. Learn about the hilti direct fastening technology that powers our actuated fasteners.
Guide on design of postinstalled anchor bolt systems in hong. Whether its for new or existing builds, from residential buildings to bridges, hilti have a solution. These pages are part of the anchor fastening technology manual issue september 2014. The hilti bolt capacities based on combined cone pull out appear much higher than the ec code capacity based on bond stress between anchor an concrete.
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