§ 571.214
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`49 CFR Ch. V (10-1-90 Edition)
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`(cid:43) (cid:50)(cid:40)(cid:44)(cid:49) (cid:49)(cid:47)(cid:44)(cid:49)(cid:40)
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`1571.214 Standard No. 214; Side door
`side of the vehicle opposite to the side
`strength.
`being tested against a rigid unyielding
`vertical surface. Fix the vehicle rigidly
`S1. Purpose and scope. This stand-
`in position by means of tiedown at.
`ard specifies strength requirements
`tachments located at or forward of the
`for side doors of a motor vehicle to
`front wheel centerline and at or rear-
`minimize the safety hazard caused by
`ward of the rear wheel centerline.
`intrusion into the passenger compart-
`(b) Prepare a loading device consist-
`Citation: CFR 500 1990
`ment in a side Impact accident.
`ing of a rigid steel cylinder or semicy-
`82. Application. This standard ap-
`linder 12 inches in diameter with an
`plies to passenger cars.
`edge radius of one-half inch. The
`83. Requirements. Each
`vehicle
`length of the loading device shall be
`shall be able to meet the requirements
`such that the top surface of the load-
`of either, at
`the manufacturer's
`ing device is at least one-half inch
`option, 83.1 or 83.2 when any of its
`above the bottom edge of the door
`side doors that can be used for occu-
`window opening but not of a length
`pant egress are tested according to 84,
`that will cause contact with any struc-
`83.1 With any seats
`that may
`ture above the bottom edge of the
`affect load upon or deflection of the
`door window opening during the test.
`side of the vehicle removed from the
`(c) Locate the loading device as
`vehicle, each vehicle must be able to
`shown in Figure 1 (side view) of this
`meet
`the
`requirements of 83.1.1
`section so that:
`through 83.1.3.
`(1) Its longitudinal axis is vertical;
`83.1.1 Initial crush resistance. The
`(2) Its longitudinal axis is laterally
`initial crush resistance shall not be
`opposite the midpoint of a horizontal
`less than 2,250 pounds.
`Content downloaded/printed from
`83.1.2 Intermediate crush
`line drawn across the outer surface of
`resist-
`the door 5 inches above the lowest
`ance. The intermediate crush resist-
`HeinOnline (http://heinonline.org)
`ance shall not be less than 3,500
`point of the door;
`(3) Its bottom surface is in the same
`pounds.
`Tue Aug 16 16:06:17 2016
`83.1.3 Peak crush resistance. The
`horizontal plane as the horizontal line
`peak crush resistance shall not be less
`described in paragraph (c)(2) of this
`than two times the curb weight of the
`section; and
`-- Your use of this HeinOnline PDF indicates your acceptance
`vehicle or 7,000 pounds, whichever is
`(4) The cylindrical face of the device
`less.
`is in contact with the outer surface of
` of HeinOnline's Terms and Conditions of the license
`83.2 With seats installed in the ve-
`the door.
`hicle, and located in any horizontal or
` agreement available at http://heinonline.org/HOL/License
`(d) Using the loading device, apply a
`vertical position to which they can be
`load to the outer surface of the door
`adjusted and at any seat back angle to
`in an inboard direction normal to a
`which they can be adjusted, each vehi-
`vertical plane along the vehicle's longi-
`-- The search text of this PDF is generated from
`cle must be able to meet the require-
`tudinal centerline. Apply the load con-
`ments of 83.2.1 through 83.2.2.
` uncorrected OCR text.
`tinuously such that the loading device
`83.2.1 Initial crush resistance. The
`travel rate does not exceed one-half
`initial crush resistance shall not be
`inch per second until the loading
`less than 2,250 pounds.
`device travels 18 inches. Guide the
`83.2.2
`Intermediate crush
`resist-
`loading device to prevent it from being
`ance. The intermediate crush resist-
`rotated or displaced from its direction
`ance shall not be
`less than 4,375
`of travel. The test must be completed
`pounds.
`within 120 seconds.
`83.2.3 Peak crush resistance. The
`(e) Record applied load versus dis-
`peak crush resistance shall not be less
`placement of the loading device, either
`than three and one half times the
`continuously or in increments of not
`curb weight of the vehicle or 12,000
`more than 1 inch or 200 pounds for
`pounds. whichever is less.
`the entire crush distance of 18 inches.
`84. Test procedures. The following
`(f) Determine the initial crush resist-
`procedures apply to determining com-
`ance, intermediate crush resistance,
`pliance with paragraph 83:
`and peak crush resistance as follows:
`(a) Place side windows in their up-
`(1) From the results recorded
`in
`permost position and all doors in
`paragraph (e) of this section, plot a
`locked position. Place the sill of the
`curve of load versus displacement and
`500
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`KSS 1018
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`Nat'l Highway Traffic Safety Admin., DOT
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`obtain the integral of the applied load
`with respect to the crush distances
`specified in paragraphs (M) (2) and (3)
`of this section. These quantities, ex-
`pressed in inch-pounds and divided by
`the specified crush distances, repre-
`sent the average forces in pounds re-
`quired to deflect the door those dis-
`tances.
`(2) The initial crush resistance is the
`average force required to deform the
`door over the initial 6 inches of crush.
`
`§ 571.214
`(3) The Intermediate crush resist-
`ance is the average force required to
`deform the door over the initial 12
`Inches of crush.
`(4) The peak crush resistance is the
`largest force recorded over the entire
`18-inch crush distance.
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`KSS 1018