The fischer FAZ II bolt anchor with 8mm diameter is perfect for securely fixing heavy loads. The stainless steel anchor for indoor and outdoor fixings is equally suitable for cracked and non-cracked concrete.
Our fischer FAZ II R bolt anchors made of stainless steel with a nominal diameter of 8.0mm are available in various anchor lengths. The thread length varies depending on the selected anchor size for a metric thread with an M8 thread diameter. The version with a normal washer and nut is suitable for a wide range of heavy-duty fixings, both indoors and outdoors, using push-in or push-through installation. For the bolt anchors with longer useful lengths, spaced installation is also possible. The variable anchoring depths of the 8mm anchor also ensure millimetre-precise adaptation to the loads present.
For a secure hold in cracked and non-cracked concrete, tightening the screw nut causes the conical bolt to be pulled effortlessly into the expansion clip, which then braces it powerfully in the inner wall of the drill hole. The ETA approval, as well as other international approvals, guarantee the highest safety when using the 8mm bolt anchor.
NOTE: The technical data varies depending on the anchor length. Information on drill hole depth, total length or effective length can be found in the Additional information tab after selecting the desired bolt anchor.
For installation with bolt anchors in concrete, holes must be drilled at the desired fixing points. Make sure that the drill diameter corresponds to the diameter of the heavy-duty anchor. For the 8mm bolt anchors, a hammer drill of size 8x110/160mm is the perfect choice, because this corresponds to the required diameter and with a spiral useful length of 110mm, drill holes up to 110mm deep are possible in order to achieve the required drill hole depth even with longer bolt anchors. How deep the hole has to be drilled depends on the anchor length and can be found in the additional information once the size has been selected. It is also important that the holes are always drilled straight and precisely. Otherwise the anchor cannot be used properly, because if it is inserted at an angle to the installation object and the screw nut is tightened, the tightening torque cannot act on the entire surface.
When the nut is tightened, the tapered bolt causes the expansion clip to expand powerfully. This contributes to the very high working loads of the small 8mm bolt anchor. However, these expansion forces also act on the inner wall of the hole, so that an edge distance of the holes of at least 40mm must be maintained. If this distance is too small, the concrete can form cracks towards the edge or even spall. A minimum distance must also be maintained between individual fixings with bolt anchors. The so-called centre distance for FAZ II bolt anchors in 8mm is at least 35mm for cracked concrete and at least 40mm for non-cracked concrete.
For a permanently secure and tight fit of the steel anchor, direct contact between the expansion clip and the inner wall of the drill hole is necessary. For this reason, the drill hole should always be thoroughly vacuumed out and, if necessary, cleaned with a drill hole brush so that the drill dust is completely removed from the drill hole. This ensures that the expansion is not impaired by remaining drill dust when the required tightening torque is reached. The tightening torque for the small steel anchors with 8mm nominal diameter is 20Nm, regardless of the type of installation, anchorage depth or attachment thickness. It is strongly recommended to tighten the nuts with a torque spanner in order to neither fall below nor exceed the tightening torque.
Our stainless steel bolt anchors are suitable, for example, for mounting installation rails for cables and pipes both indoors and outdoors. Such installation rails, which are very often used in underground garages, utility shafts and industrial halls, sometimes have to withstand quite high loads, because cables and conduits can weigh quite a lot. Bolt anchors of the FAZ II type with 8mm diameter are characterised by very good tensile load and lateral load resistance, which are significantly higher compared to simple heavy-duty anchors of identical size.
Another example of the use of smaller bolt anchors is the fastening of fence posts with anchor plates on a concrete foundation for the erection of a double-bar mesh fence, a modern privacy screen made of WPC or rhombus or similar. Because they are made of stainless steel, corrosion is not an issue for the high-quality bolt anchors, so that even adverse weather conditions do not affect the mounting material and the fence system is securely anchored in the foundation for the long term as a boundary and privacy screen.
For particularly heavy loads or installation objects that are subject to high movement stress, bolt anchors with a diameter of 10 mm and more are usually the better choice. This includes, for example, the installation of playground equipment on a concrete foundation or fall protection on balconies and staircases.
NOTE: The fischer FAZ II bolt anchor made of stainless steel is equally suitable for push-in installation and push-through installation. The small 8mm heavy-duty anchors with effective lengths from 10mm up to 50mm can also be used for spaced installation, depending on the effective length and the thickness of the attachment.
The fischer injection mortar FIS EM Plus is a high-quality epoxy mortar for top load-bearing capacity in cracked and non-cracked concrete and for seismic applications in performance categories C1 and C2. It is suitable for fixations of shear connectors for concrete layers, tall shelvings, and heavy steel constructions both inside and outside. The injection mortar is processed with the approved system components fischer threaded rod FIS A with variable anchorage depths and fischer internal threaded anchor RG M I as well as with reinforcement bars. The epoxy mortar is ideally suited for rebar connections that are installed with a large drill hole diameter and a high anchorage depth. It can also be used for diamond-drilled and water-filled drill holes.
Note: Data are based on incomplete and sometimes conflicting sources. Official US Navy sources have been used when they are available in the collection of the Navy Department Library. The date provided at the end of each entry is the date of the accident/incident, rather than the date of death of individuals who may have died subsequently to the event.
Continental sloop Saratoga lost with all hands in a gale off the Bahamas. The only survivors were detailed to a captured vessel which almost capsized in the same storm. Crew of 86 less the prize crew drowned. 18 March 1781.
Ketch Intrepid, fitted out as an "infernal" or fire ship, blown up in premature detonation of powder charges during blockade of Tripoli. 12 killed, including Capt. Richard Somers. 4 September 1804.
An explosion during an ordnance experiment at the Washington Navy Yard killed two workers. For safety purposes, the laboratory and powder magazine are then moved to separate locations. 7 September 1841.
Screw Steamer USS Princeton 12-inch shell gun explodes in ordnance accident. Secretary of the Navy Thomas Gilmer; Secretary of State Abel P. Upshur; Capt. Beverly Kennon, Chief of the Bureau of Construction, Equipment and Repairs; Rep. Virgil Maxey of Maryland; Rep. David Gardiner of New York; and a servant of the President killed. Approximately 20 individuals injured. 29 February 1844.
Bark USS Fredonia destroyed and sidewheel gunboat Wateree driven ashore by tidal waves at Arica, Peru. [Wateree later served as living spaces ashore, then as an inn. Despite more tidal waves in later years, the intact hulk of Wateree, with donkeys tied to it, was spotted on the beach as late as 1879.] 27 killed. 15 August 1868.
Merchant ship SS Colima wrecked in storm near Manzanillo, Mexico. Coal Passer John W. Crew, Yeoman Gustave Adolph Mewis, Apprentice 1 class John Henry W. Smith and Coxswain Carl Walske drowned. 28 May 1895.
Gunboat USS Helena Ordinary Seaman Axel Johansson, while serving on prize crew aboard a Spanish ship, accidentally shot and killed when his revolver fell from its holster and discharged. 25 April 1898.
Steam launch from USS Yosemite foundered in the harbor of San Luis d'Apra, Guam in typhoon. Coal Passer Joseph Anderson, Seaman George Aubel, Fireman 1 class William Davis, Apprentice 1 class Jacob L. Mehaffey and Coxswain Frank Swanson drowned. 13 November 1900.
Protected cruiser USS Boston steam accident during the repair of the safety valve on boiler H. Machinist 2 class Edward Lee Baker died on way to the Naval Hospital, Mare Island CA. 29 January 1903.
Torpedo Boat No. 26 USS Biddle steam accident. The bursting of the boiler tube in the fire-room during a full power trial resulted in the death of George Dare Wamer who died on board the USS Franklin the day after the accident. 24 June 1904.
Merchant ship SS Valencia wrecked on the west coast of Vancouver Island, British Columbia. Five personnel on leave were drowned: Ordinary Seaman John Finley, Coal Passer Harman Fisher, Ordinary Seaman Clyde William Knight, Ordinary Seaman Charles Uhler and Coal Passer John Sidney Widmer. 23 January 1906.
Battleship No. 22 USS Minnesota steam accident while cruising with the Great White Fleet. Fireman 2 class John Henry Clear scalded. He died five days later at the Naval Hospital, Canacao, Philippines. 9 November 1908.
Battleship No. 29 USS North Dakota steam accident caused by ignition of fuel oil settling tank over Boiler #1. Coal Passers Joseph William Schmidt, Joseph Streit and Robert Gilmore died. 8 September 1910.
Destroyer No. 34 USS Walke port main turbine split wide open. Lieutenant D. P. Morrison, Chief Gunners Mate Elbridge Belknap Crawford, Fireman 1 class Thomas Joseph Delaney, and Machinist Mates 1 class John William Rumpf and Harry Lee Wilder died. 1 October 1912.
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