JOMY RETRACTABLE LADDER
JOMY® PRODUCTS, INC.
4635 NAUTILUS COURT SOUTH
BOULDER, CO 80301
1.0 DESCRIPTION OF EVALUATION
The JOMY Retractable Ladder has been evaluated for use as a ladder and as a component of an emergency escape device used in conjunction with Section 809.4.
2.0 DESCRIPTION AND USE OF PRODUCT
The JOMY Retractable Ladder is a retractable aluminum ladder with a maximum height of 30 feet which is intended to be affixed either to an interior or exterior wall of a building or an interior or exterior column, or supported in a different manner within the building. The JOMY Retractable Ladder is used for controlled access to an attic, roof, or interstitial space for maintenance of to serve as a component of an emergency escape device used in conjunction with an emergency egress and rescue window. In its undeployed state the ladder is locked and presents the appearance of a drainpipe or downspout with a cross sectional area of approximately 20 in. 2. A release handle is located at each window, door, or other access to the ladder, at a height of 60 inches above the floor level, but not higher than the maximum opening height, whichever is less. After turning the handle the ladder deploys automatically to a vertical position and provides a rung width of 22 inches and a distance of 12 inches between rungs. Additionally, a side guard drops into place which is 14.5 inches in width. See Figure 1 for all dimensions. Vertical stiles are extruded aluminum sections formed from 6063-T6 aluminum alloy. Tubular ladder rungs are formed from 6005-T5 and 6005-T6 aluminum alloy. The rungs have a rectangular cross section of 1.0 inch height by 1.5 inch width. U-shaped wall brackets are fabricated from 6063-T6 aluminum alloy.
2.1 SUMMARY OF THE MANUFACTURER'S INSTALLATION REQUIREMENTS
Ladders are mounted to the building with spacers up to 7 inches from the wall to provide clearance from obstructions. Special extension brackets are available from JOMY Products to provide up to 60 inches clearance from obstructions on the wall, in which case access is provided to the ladder by an approved landing. All connections and fasteners including supporting structure elements shall be designed by a registered professional engineer to support the required design live load.
The base section of the JOMY Retractable Ladder rests on the ground or pavement or some other approved support that provides adequate strength to support all anticipated vertical loads.
3.0 CODE ANALYSIS OF SUBMITTED INFORMATION
The following data was submitted by the applicant for demonstration of compliance with the respective code sections listed above each item of information. The basis is the BOCA National Building Code/1993.
3.1 STRENGTH OF LADDER
CODE SECTION 1703.0 Information required: This code section requires that sufficient technical data be submitted to substantiate the performance of a material or system. The JOMY Retractable Ladder is evaluated with respect to its structural performance/
CODE SECTION 102.3 Matters no provided for: This code section requires the code official to determine the essential requirements for structural, fire or sanitary safety of a building element when those requirements are nor specifically provided for by the code. The code contains no provisions which specifically address the design, construction or the installation of ladders. Therefore, it is appropriate to apply the Occupational Safety and Health Administration (OSHA) requirements contained in 29CFR Part 1910.27 to establish a basis for evaluating the JOMY Safety Ladder. OSHA requires that the ladder support a concentrated load of 200 lbs., positioned at a point that would cause maximum stress in the structural members. Other requirements of OSHA pertain to a maximum rung spacing of 12 inches and a minimum rung diameter of 0.75 inch, both of which the JOMY Safety Ladder complies with.
INFORMATION SUBMITTED:
3.1.1 Underwriters Laboratories, Inc. Test Report No. SA7249 dated April 21, 1986, lists the results of tests performed on the JOMY Safety Ladder. Tests were performed as follows, on a 16 ft.. ladder. Items 1 and 2 are submitted to demonstrate compliance with the OSHA requirements referred to above.
3.1.1.1 STATIC LOAD TEST:
METHOD
A 16 ft. sample of the ladder was mounted according to the manufacturer's installation instructions to the outside surface of a two story brick dwelling. Internal constructions of the supporting wall consisted of plaster and wood reinforcement. A test load of 2400 lb was then distributed among rungs 1 through 13 inclusive. The test load was left in place for 1 hour.
RESULTS
The ladder and mounting means withstood the applied load without failure. Examination of the building surface indicated the masonry bolts had not distorted and no evidence of slippage or stripping of the mounting means was visible.
3.1.1.2 RUNG STRENGTH TEST:
METHOD
The 16 ft. ladder sample employed for the static load tests was used for this test. A total load of 1,000 lb. was applied to a 3 1/2 in. wide block resting on the center of a rung.
RESULTS
The rung withstood the applied load without failure. A permanent set of 1 3/4 in. was recorded. The ladder was operational after this test.
3.1.1.3 RUNG TO SIDE RAIL SHEAR STRENGTH TEST:
METHOD
The same 16 ft. sample employed during the static load test was used for this test. A load of 1,000 lb. was applied to a 3 1/2 in. wide block centered over a rung as near the side rail as possible.
RESULTS
Upon removal of the test load, the fasteners attaching the rung to the side rail showed no evidence of failure. The ladder was operational after this test.
3.1.1.4 RUNG TORQUE TEST:
METHOD
The same unit employed during the static load test was used for this test. A torque load of 1440 lb. was applied to a 3 1/2 in. wide area on the center of a rung. The torque was applied using a test bar that would not damage the rung. The torque was applied in a clockwise then counterclockwise direction for ten alternate load cycles.
RESULTS
The rung withstood the torque test without visible relative motion between the rung and side rails.
3.1.1.5 RELEASE MECHANISM TEST:
METHOD
A force required to actuate the release mechanism was recorded. The average of three consecutive readings was computed.
RESULTS
All three test trials indicated a force of 3 1/2 lb. was necessary to actuate the release mechanism.
3.1.1.6 LOW TEMPERATURE TEST:
METHOD
A 3 ft. sample of the ladder was subjected to -40° C for 24 hours.
RESULTS
The unit remained operational after being subjected to the above exposure.
3.1.1.7 RAIN/LOW TEMPERATURE TEST:
METHOD
A 3 ft. sample of the ladder was subjected to a standard rain test for 1 hour followed by 8 hours at -25° C.
RESULTS
Upon removal from the environmental chamber, the force required to open the ladder was recorded at 10 lbs.
3.1.1.8 The rungs of the ladder meet the requirements contained in 29CFR Part 1910.27, which require a minimum rung diameter of 0.75 inch and a maximum distance between rungs of 12 inches.
3.2 EMERGENCY ESCAPE
CODE SECTION 1010.4 Emergency Escape: This section requires that every sleeping room below the fourth story in buildings of Use Groups R and I-1 be provided with at least one operable window or exterior door approved for emergency egress or rescue. The minimum required dimensions of the opening are provided, but the code is silent regarding the termination point of the emergency egress opening.
INFORMATION SUBMITTED:
3.2.1 In addition to the information provided in Part 3.1 of this report, the used of the JOMY Retractable Ladder as a component of an emergency egress device is supported by the fact that there is no specific code text that requires a continuation of emergency egress to the public way. Therefore, the JOMY Retractable Ladder is an alternative to providing no continuation of emergency egress travel.
4.0 INSTRUCTIONS TO THE CODE OFFICIAL
The JOMY Retractable Ladder has been evaluated for conformance with the sections of the 1993 BOCA National Codes as listed in the "Code Analysis of Submitted Information" section of this report. This report is limited to the applications and products as stated herein. This evaluation is based solely upon information provided to the BOCA Evaluation Services, Inc. by JOMY Products, Inc. and has not been independently verified. The Committee intends that this report be used as information for determining compliance with those sections, with the following limitations:
Limitations
4.1 This report is subject to annual certification. The failure of the applicant to comply with this requirement will result in the lapse of this report. Further use of, or reference to, this report is then no longer permitted and it is removed from the quarterly listing. To verify that this is a current report, see the current BOCA Evaluation Services, Inc., Product Evaluation Quarterly.
4.2 The JOMY Retractable Ladder shall not be used as a component of a required means of egress and is limited to use as an emergency escape device from a building with means of egress facilities complying with the BOCA National Codes.
4.2.1 The JOMY Retractable Ladder shall be installed within 12 inches horizontally of the adjacent window opening and shall extend not less than the full height of the opening. The deployment release handle shall be located within 12 inches horizontally of the window opening, at a height not greater then 60 inches above the floor level or not higher than the maximum opening height, whichever is the lesser.
4.2.2 Where used for access to spaces for maintenance purposes, a permanent label shall be affixed to the JOMY Safety Ladder that states the ladder is to be used by not more than one person at a time.
4.3 A permit shall be required before installing the JOMY Retractable Ladder.
4.4 All installations of the JOMY Retractable Ladder shall be accompanied by structural calculations which are signed and sealed by a professional engineer or architect. The design and calculations shall indicate as a minimum, the live load and safety factor used, an evaluation of the supporting structure elements, as well as the spacing of wall brackets and the types of fasteners used.
4.5 The JOMY Retractable Ladder shall not be longer than 30 feet.
4.6 Ladders or portions of ladders which exceed 20 feet in height above the adjoining ground level shall be provided with a protective cage or other safety device. Every installation of the JOMY Retractable Ladder shall conform to OSHA requirements 29CFP Part 1910.27 for fixed ladders.
4.7 The JOMY Retractable Ladder shall be deployed at least twice every year to verify that it operates and has been maintained properly.
5.0 INFORMATION REQUIRED ON PLANS AND SPECIFICATIONS
5.1 The language "See BOCA Evaluation Services, Inc., Research Report No. 91-17."
6.0 IDENTIFICATION
All containers of the JOMY Safety Ladder shall be marked at the JOMY Safety Ladder Company with the manufacturer's name and model number, along with the language, " See BOCA Evaluation Services, Inc. Research Report NO. 91-17."
Reference to this research report is limited to the identification as described herein. Any other reference to this report or the BOCA logo is prohibited.
For an original copy of this report please contact us at 800-255-2591.
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