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Knockdown Stair Systems

All units shipped knocked-down. Check local code requirements before ordering.

Standard step treads are made of formed diamondplate. Safety grating treads are available on request.

IBC Stair shown with optional JiffyTower

OSHA Knockdown Stairway

The OSHA Series stairway is designed to conform to the Federal OSHA & Cal-OSHA requirements for fixed industrial stairway applications. The 10” deep treads have an adjustable rise between 7-1/4” and 8” with an angle to climb between 37° and 42°. Custom tread widths are available.

ModelAdj. Top of Deck HeightHorizontal RunTread WidthOverall WidthEst. Weight
EX 7-36
EX 7-42
EX 7-48
>48″ to 56″60″ to 55″36"
42"
48"
41"
47"
53"
245 lbs.
262 lbs.
278 lbs.
EX 8-36
EX 8-42
EX 8-48
>56″ to 64″69″ to 64″36"
42"
48"
41"
47"
53"
277 lbs.
296 lbs.
314 lbs.
EX 9-36
EX 9-42
EX 9-48
>64″ to 72″79″ to 73″36"
42"
48"
41"
47"
53"
309 lbs.
330 lbs.
351 lbs.
EX 10-36
EX 10-42
EX 10-48
>72″ to 80″88″ to 82″36"
42"
48"
41"
47"
53"
327 lbs.
364 lbs.
387 lbs.
EX 11-36
EX 11-42
EX 11-48
>80″ to 88″97″ to 91″36"
42"
48"
41"
47"
53"
372 lbs.
398 lbs.
423 lbs.
EX 12-36
EX 12-42
EX 12-48
>88″ to 96″106″ to 100″36"
42"
48"
41"
47"
53"
410 lbs.
438 lbs.
466 lbs.
EX 13-36
EX 13-42
EX 13-48
>96″ to 104″116″ to 109″36"
42"
48"
41"
47"
53"
467 lbs.
497 lbs.
527 lbs.
EX 14-36
EX 14-42
EX 14-48
>104″ to 112″124″ to 118″36"
42"
48"
41"
47"
53"
500 lbs.
533 lbs.
565 lbs.
EX 15-36
EX 15-42
EX 15-48
>112″ to 120″134″ to 128″36"
42"
48"
41"
47"
53"
534 lbs.
569 lbs.
604 lbs.
EX 16-36
EX 16-42
EX 16-48
>120″ to 128″143″ to 136″36"
42"
48"
41"
47"
53"
568 lbs.
605 lbs.
642 lbs.
EX 17-36
EX 17-42
EX 17-48
>128″ to 136″152″ to 145″36"
42"
48"
41"
47"
53"
560 lbs.
595 lbs.
660 lbs.
EX 18-36
EX 18-42
EX 18-48
>136″ to 144″160″ to 154″36"
42"
48"
41"
47"
53"
587 lbs.
622 lbs.
657 lbs.

IBC Knockdown Stairway

The IBC Knockdown Stairway is designed to meet or exceed the International Building Code adopted by many cities and states when used in Storage and Warehouse occupancies. The large treads are 12” deep with 3 available widths. The comfortable climbing slope varies between 27° and 33° with a 6” to 7” rise per step. All fasteners and brackets are provided for fast two-man assembly.

ModelAdj. Top of Deck HeightHorizontal RunTread WidthOverall WidthEst. Weight
IBC 4-36
IBC 4-48
>22" - 28"37" to 34"36"
48"
41"
53"
143 lbs.
159 lbs.
IBC 5-36
IBC 5-48
>29" - 35"48" to 45"36"
48"
41"
53"
188 lbs.
215 lbs.
IBC 6-36
IBC 6-48
>35" - 42"59" to 56"36"
48"
41"
53"
243 lbs.
277 lbs.
IBC 7-36
IBC 7-48
>42" - 49"71" to 67"36"
48"
41"
53"
287 lbs.
327 lbs.
IBC 8-36
IBC 8-48
>49" - 58"81" to 78"36"
48"
41"
53"
329 lbs.
375 lbs.
IBC 9-36
IBC 9-48
>58" - 63"92" to 89"36"
48"
41"
53"
372 lbs.
425 lbs.
IBC 10-36
IBC 10-48
>63" - 70"104" to 100"36"
48"
41"
53"
415 lbs.
474 lbs.
IBC 11-36
IBC 11-48
>70″ – 77″115″ to 111″36"
48"
41"
53"
458 lbs.
523 lbs.
IBC 12-36
IBC 12-48
>77″ – 84″126″ to 122″36"
48"
41"
53"
507 lbs.
579 lbs.
IBC 13-36
IBC 13-48
>84″ – 91″137″ to 133″36"
48"
41"
53"
550 lbs.
629 lbs.
IBC 14-36
IBC 14-48
>91″ – 98″144″ to 145″36"
48"
41"
53"
592 lbs.
678 lbs.
IBC 15-36
IBC 15-48
>98″ – 105″159″ to 156″36"
48"
41"
53"
636 lbs.
727 lbs.
IBC 16-36
IBC 16-48
>105″ – 112″171″ to 167″36"
48"
41"
53"
733 lbs.
829 lbs.
IBC 17-36
IBC 17-48
>112″ – 119″182″ to 178″36"
48"
41"
53"
775 lbs.
879 lbs.
IBC 18-36
IBC 18-48
>119″ – 126″193″ to 188″36"
48"
41"
53"
823 lbs.
935 lbs.
IBC 19-36
IBC 19-48
>126″ – 133″199″ to 203″36"
48"
41"
53"
867 lbs.
985 lbs.
IBC 20-36
IBC 20-48
>133″ – 140″215″ to 211″36"
48"
41"
53"
909 lbs.
1,033 lbs.
IBC 21-36
IBC 21-48
>140″ – 144″226″ to 224″36"
48"
41"
53"
952 lbs.
1,082 lbs.

We are very pleased with Wildeck’s quality safety products and the outstanding customer service we have received. We would definitely purchase from them again.

- Ronald Vincze
Quality Manager, Precision Gears, Inc.

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