Anchorage seating

Upstream slope failed. Blocks moved 30-150 ft. Multiple shear zones found similar to deep-seated liquefaction in Anchorage. No pressure ridge formed. Trenched upstream face to 60 ft. Strong evidence of liquefaction near bottom of trench (mixing of soils at 70 ft). N-value typically less than 25 at 70 ft. Believed 20-ft layer near base liquefied... 

A robust and secure belt worn by an individual (e.g., telephone line worker, window washers, construction worker, etc.) attached to a secure object (telephone pole, window sill, anchor point, etc.) via a safety lanyard, to prevent injury due to falling. They are intended for use where mobility can be limited, and where the combined effects of the anchorage point position and length of the lanyard limits the potential drop of the individual in case the individual falls. Also can refer to a seat or torso belt securing a passenger in an automobile or airplane to provide body protection during a collision, sudden stop, air turbulence, etc. 

Seat belts and anchorages meeting the requirements of 49 CFR Part 571 (Department of Transportation, Federal Motor Vehicle Safety Standards) shall be installed in all motor vehicles. 

A. Section 1926.601 specifically covers vehicles that operate within an off-highway jobsite, not open to public traffic, and provides a list of general requirements. The list of requirements is not in any priority sequence and are independent of each other. The anchorage requirement for seat belts is not dependent on the requirement to provide an adequate number of firmly attached seats for occupants being transported. The Department of Transportation (DOT) Standards and test data vehicle housing and are not intended to apply to side facing seats in the rear of pick up trucks. Therefore, seat belts and rollover protection for occupants in the rear of pickup trucks operated within an off-highway jobsite are not addressed or required by the standard. 

A fixed anchorage-consisting of a rectangular steel plate drilled to receive the individual button-headed wires seated directly on this plate. A thin cover plate retains the button heads during fixing. 

For the ties to be effective, proper anchorage within or against the masonry is necessary. This might be achieved, either by using end plates or by using grouted ends. The tie is usually a passive element which becomes active when cracks open between orthogonal walls or timber beams tend to slide off their seat. 

January 1967 207 Anchorage of Seats Feder2d Std. No. 515/6a (GSA) and SAE Practice J879... 

January 1967 210 Seat Belt Assembly Anchorages Federal Std. No. 515/la (GSA) and Nat l. Bureau of Standards Standard... 

FMVSS 210 establishes requirements for seat belt assembly anchorages to insure their proper location for effective occupant restraint and to reduce the likelihood of their failure. The standard applies to passenger cars, multipurpose passenger vehicles (MPVs), trucks and buses. 

Figure 4 shows the test srt-up for the seatback anchor pull test The torso portion of each seat belt assembly and the pelvic portion of a type two seat belt assembly (A combination of pelvic lap belt and upper torso shoulda- belt) restraints shall be loaded to 13.34 kN. For each belt load application, all forces shall be adjnsted to 10% of target. The load shall then be increased to 100% of the target load. After holding the load for a minimum of 10 seconds (load apphcation time fiom 10% of load can not exceed 30 seconds), the test loads shall be released and anchorages inspected. 

Permanent deformation or rupture of a seat belt anchorage or its surrounding area is not considered to be a failure, if the required force is sustained for the specified time. 

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