ANSIBIFMA X 5 1 2002 American National Standard
ANSI/BIFMA X 5. 1 – 2002 American National Standard for Office Chair General-Purpose Office Chairs - Tests Bill WANG Senior Engineer- Furniture Test
Scope 范围 ANSI/BIFMA X 5. 1 – 2002 This standard is intended to provide manufacturers, specifiers, and users with a common basis for evaluating the safety, durability, and structural adequacy of general-purpose office chairs. General-purpose office chairs are normally used in an office environment and may include, but are not limited to those seating styles typically referred to as: executive/management, task/secretarial, side/guest chairs, stacking chairs, tablet arm chairs and stools. This standard describes the means of evaluating general-purpose office chairs, independent of construction materials, manufacturing processes, mechanical designs or aesthetic designs. This standard does not address lounge seating, flammability, surface material durability, cushioning materials, product emissions, or ergonomic considerations. The standard defines specific tests, the laboratory equipment that may be used, the conditions of tests, and the minimum acceptance levels to be used in evaluating general-purpose office chairs. The acceptance levels given in this standard are based on the actual field use and test experience of BIFMA International members. The tests in this standard are intended to assess the performance of new products only. They are not intended to assess a product that has been in use.
Test Items 测试项目 Test Items Backrest Strength Test - Static - Type l ANSI/BIFMA X 5. 1 – 2002 Type III x x x Backrest Strength Test - Static - Type II & III Base Test - Static x x x Drop Test - Dynamic x x x Swivel Test - Cyclic x x x Tilt Mechanism Test - Cyclic x x Seating Durability Test - Cyclic x x x Stability Tests x x x Arm Strength Test - Vertical - Static x x x Arm Strength Test - Horizontal - Static x x x Backrest Durability Test - Cyclic - Type II and Type III
Test Items 测试项目 ANSI/BIFMA X 5. 1 – 2002 Test Items Type III Caster/Chair Base Durability Test - Cyclic x x x Leg Strength Test - Front and Side Application x x x Footrest Durability Test - Vertical - Cyclic x x x Arm Durability Test - Cyclic x x x Out Stop Tests for Chairs with Manually Adjustable Seat Depth x x x Tablet Arm Static Load Test x x x Tablet Arm Load Ease Test - Cyclic x x x
Types of Chairs ANSI/BIFMA X 5. 1 – 2002 Type I: Type III: Tilt Chairs Fixed seat angle, tilting backrest Fixed seat angle, fixed backrest
Backrest Strength Test ANSI/BIFMA X 5. 1 – 2002 Purpose of Test: The purpose of this test is to evaluate the ability of the chair to withstand stresses such as those caused by the user exerting a rearward force on the backrest of the chair. Main Parameter: Type I: Functional load－200 lb (890 N). Proof load－300 lb (1334 N). Type II & III: Functional load －150 lb (667 N). Proof load －250 lb (1112 N). Load point: 16 in. (406 mm) or top Duration: 1 min.
Base Test ANSI/BIFMA X 5. 1 – 2002 Purpose of Test The purpose of this test is to evaluate the ability of a pedestal base to withstand excessive vertical forces. Main Parameter: Test loading: 2500 lbf. (11120 N). Duration: 1 min. Cycle: 2 times 不通过测试的案例
Drop Test - Dynamic ANSI/BIFMA X 5. 1 – 2002 Purpose of Test The purpose of this test is to evaluate the ability of the chair to withstand heavy and abusive impact forces on the seat. Main Parameter: Functional load: 225 lb (102 kg). Proof load: 300 lb (136 kg). Drop height: 152 mm (6 in. ) Cycle: 2 times (Highest and Lowest)
Swivel Test ANSI/BIFMA X 5. 1 – 2002 Purpose of Test The purpose of this test is to evaluate the ability of the chair to withstand stresses and wear of repeated swiveling. Main Parameter: Seat loading： 225 lb (102 kg). Cycle： 60, 000(highest Position) 60, 000(lowest Position) Note: If the available range of rotation is less than 360°, the rotation of the test machine shall be adjusted such that the swivel mechanism touches but does not override the stops.
Tilt Mechanism Test - Cyclic ANSI/BIFMA X 5. 1 – 2002 Purpose of Test The purpose of this test is to evaluate the ability of the tilt mechanism to withstand the fatigue stresses and wear caused by repeated tilting. Main Parameter: Seat loading: 225 lb (102 kg). Cycle: 300, 000 Note： move the mechanism between the front and back stops, without overriding or impacting either stop.
Seating Durability Test ANSI/BIFMA X 5. 1 – 2002 - Cyclic Purpose of Test The purpose of these tests is to evaluate the ability of chairs to withstand fatigue stresses andwear caused by downward vertical force(s) on the seat. Main Parameter: 1. Seating impact test Weight of impactor: 125 lb (57 kg). Drop height: 25 mm (1 in); Cycle: 100, 000 2. Front corner load - Ease test Cycle: 40000（20000 for each corner） Loading: 165 lbf (734 N). Loading pad: 203 mm ± 13 mm (8 in. ± 0. 51 in. ) diameter
Stability Test ANSI/BIFMA X 5. 1 – 2002 （Rear & Front stability） Purpose of Test The purpose of these tests is to evaluate the front and rear stability of chairs. Main Parameter: 1. Rear stability Loading： 173 lbs (79 kg) Min. tipping force： Type I： 20 lbf. (89 N) Type III： 35 lbf. (156 N) 2. Front stability Loading： 135 lbf (600 N). Pull： 4. 5 lbf (20 N).
ANSI/BIFMA X 5. 1 – 2002 Arm Strength Test Vertical & Horizontal Static Purpose of Test The purpose of the test is to evaluate the ability of a chair arm to withstand stresses caused by applying forces on the arm(s). Main Parameter: 1. Vertical Functional load: 200 lb (890 N). Proof load: 300 lb (1334 N). Duration: 1 min. 2. Horizontal Functional load: 100 lb (445 N). Proof load: 150 lb (667 N). Duration: 1 min.
Backrest Durability Test ANSI/BIFMA X 5. 1 – 2002 Purpose of Test The purpose of this test is to evaluate the ability of the chairs to withstand fatigue stresses and wear caused by rearward force on the backrest of the chair. Main Parameter: 1. Backrest with less than 406 mm (16 in. ) in width. Backrest loading: Type I: 100 lbf (445 N). Type II & III: 75 lbf (334 N). Load point: 16 in. (406 mm) or top Seat loading: 225 lb (102 kg). Cycles: 120, 000 2. Backrest with less than 406 mm (16 in. ) in width. Load point: 102 mm (4 in) to the right of the vertical centerline Cycles: 20000 (Left) + 20000 (Right) + 80000
Caster/Chair base Durability Test ANSI/BIFMA X 5. 1 – 2002 Purpose of Test The purpose of this test is to evaluate the ability of the chair base and casters to withstand fatigue stresses and wear caused by moving the chair back and forth. Main Parameter: Loading: 225 lb (102 kg). Stroke: 762 mm (30 in) Cycle: 2000 (surface with obstacle) 98000 (smooth hard surface) Note：No part of the caster shall separate from the base as a result of the application of the 22 N force after test.
Leg Strength Test Front & Side application ANSI/BIFMA X 5. 1 – 2002 Purpose of Test The purpose of this test is to evaluate the ability of legs to withstand horizontal side and frontal forces. Main Parameter: 1. Front application Functional load: 75 lbf (334 N) Proof load: 125 lbf. (556 N) Load point: 13 mm ~ 38 mm Duration: 1 min. 2. Side application Functional load: 75 lbf (334 N). Proof load: 115 lbf (512 N). Load point: 13 mm ~ 38 mm Duration: 1 min.
Footrest Durability Test ANSI/BIFMA X 5. 1 – 2002 Purpose of Test The purpose of this test is to evaluate the ability of the footrest structure to withstand stresses that occur as a result of repetitive loading that can be imposed on the footrest structure. Main Parameter: Test loading: 200 lbf (890 N). Cycle: 50, 000 Applied length: 102 mm (4 in)
Arm Durability Test ANSI/BIFMA X 5. 1 – 2002 Purpose of Test The purpose of this test is to evaluate the ability of the chair armrests to withstand stresses that occur as a result of repetitive loading that can be imposed on the armrest structure. Loading of this type is the result of using the armrests as a support when getting out of the chair. Main Parameter: Loading: 90 lb (400 N). Cycle: 60000
Out Stop Tests for Chair with Manually Adjustable Seat Depth ANSI/BIFMA X 5. 1 – 2002 Purpose of Test The purpose of this test is to evaluate the ability of the seat slide out stops to withstand excessive impact forces that may result from user adjustment of the seat depth. Note: this test does not apply to chairs where seat depth adjustments must occur with the user out of the chair. Main Parameter: Seat loading: 154 lb (70 kg). Weight: 55 lb (25 kg) Cycle: 25 times Note: this test does not apply to chairs where seat depth adjustments must occur with the user out of the chair.
Tablet Arm Static Load Test & Tablet Arm Load Ease Test ANSI/BIFMA X 5. 1 – 2002 Static Loading: 150 lb. Duration: 5 min. Cyclic Weight of test bag: 77 lb. Cycle : 100, 000 Note: During test, the bag shall eased onto the tablet surface without impact.
THANK YOU！ Bill Wang Tel: 0757 – 22805716 Mobile: 13632306330 E-mail: Bill. Wang@sgs. com
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