BIFMA X5.11

Micom offers BIFMA X5.11 testing as part of its Office Furniture Testing services.  ANSI/ BIFMA X5.11 General Purpose Large Occupant Office Chairs – tests – was released on January 5, 2015.  This standard  is for individuals having a corporal mass greater than 253 lbs and up to 400 lbs which equates to the 99,5th percentile male in the US. Below is a test-by-test comparison between  X5.11 and X5.1 which is for individuals weighting up to 253 lbs (95th percentile male). To a large extent the two standards are similar.  However most of the loads and forces were increased.

NEW BIFMA CHAIR STANDARD FOR LARGE OCCUPANTS

Comparison between BIFMA X5.11-2015 and ANSI/BIFMA X5.1-2011

Section # in X 5.11-2015

BIFMA X 5.11-2015

BIFMA X 5.1-2011

Comments

Title

General Purpose Large
Occupant Office Chairs – Tests

General Purpose Office
Chairs – tests

 

Scope

Standard based on a 400 lbs individual

Standard based on a 253 lbs individual

This is not a bariatric chair standard hence; chairs tested to that standard cannot be qualified as “bariatric”.400 lbs represents the 99,5th percentile male. there is also a minimum seat width requirement for a “Large Occupant Chair” (refer to section 5 below)

4

Type I, II, III

Type I, II, III

Same

5. Seat Width Measurements

Standard allows use of CMD or a simple template given in section 5

No such requirement

Exclusive to X 5.11

6. Back strength test
(Type I)

200/300 lbf

(Test# 5)
200/300 lbf

Same

7. Back strength test
(Type II & III)

150/250 lbf

(Test# 6) 150/250 lbf

Same

8. Drop test

250 / 350 lbs

225 / 300 lbs

Same test, higher loads

9. Swivel cycling test

400 lb load on seat

250 lb load on seat

Same test, higher load on seat

10. Tilt mechanism test

350 lbs on seat

225 lbs on seat

Same test, higher load on seat

11.2. Seating impact test

Bag of 200 lbs

Bag of 125 lbs

Same test, high load in bag

11.4. Front Corner Load
Ease Test – Cyclic

300 lbf on a 10″ diameter loading device

165 lb fon a 8″ diameter loading device

Same test; increased load with increased diameter loading area

12.3. Rear Stability test

Type I & II chairs:
13 disks, Type III: 6 disks

Type I & II chairs: 13 disks, Type III: 6 disks

Same disks and loads, X5.11 call to manually move backrest at tilt stop for tilting chairs

12.4. Front Stability

175 lb stability load, 4.5 lbf horizontal
pull force

135 lb stability load, 4,5 lbf horizontal pull force

Same test, vertical load increased

13. Arm strength test –
Vertical

200/300 lbf

169 / 253 lbf

Same test, different force applications.(The X 5.11 force is the same requirement as X 5.1-2002)

14. Arm strength test –
Horizontal

100/150 lbf

100/150 lbf

Same

15. Backrest durability (Type 1)

350 lbs on seat, 100 lbf on backrest

225 lbs on seat, 100 lbf on backrest

Same back pull forces; different loads on seats.

16. Backrest durability
(Type 2 & 3)

350 lbs on seat, 75 lbf on backrest

225 lbs on seat, 75 lbf on backrest

Same back pull forces; different loads on seats.

17. Caster/chair base
durability test

400 lb load on seat

250 lb load on seat

Same test, higher load on seat

18. Leg strength test –
front application & side application

100 lbf/150 lbf

75 lbf/113 lbf

Same test; increased load

19. Arm durability test

100 lbf

90 lbf

Same test; increased load

20. Out Stop Tests for
Chairs with anually Adjustable Seat Depth

163 lb/55 lb horizontal

164 lb/55 lb horizontal

Same

21. Tablet Arm Static Load Test

150 lb load

150 lb load

Same

22. Tablet Arm Load Ease Test – Cyclic

55 lb load,100 000 cycles

77 lb load,100 000 cycles

Same test, lowered load

23. Structural Durability Test – Cyclic

 

No such test

Exclusive to X5.11

 

Tests no required in X5.11 but required in X5.1:

  • X5.1 – Test #7 Base Test – Static
  • X5.1 – Test #19 Footrest Static Load Têst – Vertical
  • X5.1 – Test #19 Footrest Durability Test – Vertical – Cyclic

Other related test methods:

For additional related test methods please see;  BIFMA TestingBIFMA X5.1, BIFMA X5.4 or CAL 133 testing.

« Go Back