KCMA Cabinet Structural Tests
To assure the structural integrity of the cabinet and its installation. Each of the tests is designed to measure the ability of the cabinet to withstand service loadings and remain functional.
Static Loading on shelves and bottoms of cabinets
Purpose: To test ability of shelves and bottoms to withstand loading without excessive deflection or structural damage.
A. Amount cabinets according to manufacturer’s instructions.
B. Apply suitable deflection measuring instrumentation. Instrumentation shall measure any support settlement
C. Load all Shelves and cabinet bottoms uniformly at 718 Pa (15 pounds per square foot). Arrange loads to avoid bridging effect.
D. Maintain Loading for seven cards. Examine loaded cabinets at end of test period.
1. There shall be no visible sign of joint separation or failure in any part of the cabinets or mounting system.
2. The loaded shelves and bottoms shall not deflect more than l.6 mm (1/6 inch) per 305 mm (lineal foot) between supports. Maximum deflection shall be 6.4 mm (1/4 inch) between supports.
Static Loading for wall cabinet
Purpose: To assure that wall cabinets will stay on wall with extra loading beyond shelf and bottom loading.
A. Mount wall cabinet according to manufacturer’s instructions except the top of the cabinet will be next to the loading device.
B. Place loading device on center 0f front of cabinet as shown in drawing. Zero out the weight of the I-beam and bar. Apply load slowly, taking four minutes to reach 227 kg (500 pounds).
Required performances: The cabinet shall accept the net loading of 227 kg (500 pounds) without any visible sign of failure in the cabinet or the mounting system.
Base Front joint loading
Purpose: To test strength of base-front joints to withstand the stresses expected to be applied where joining modular cabinets in the kitchen, and to insure reliable front joints that will not open up after the cabinet is in service.
A. lf any drawer hardware would interfere with the test, remove it before testing.
B. Place center of loading device 51mnr (2 inches) below bottom of top rail or cabinet top.
C. Apply load slowly, taking four minutes to reach 113 kg (250 pounds), for cabinets with drawer rail; or 91kg (200 pounds) for cabinets without drawer rail.
There shall be no visible sign of joint failure on exposed face of the cabinet when full test load is reached. Joint failure is defined as an increase in joint opening as a result of the test.
Impact on shelves, Cabinet Bottoms, and Drawer Bottoms
Purpose: To test ability of Shelves, bottoms and drawer bottoms to withstand the dropping of cans and other items on their surfaces.
A. Mount cabinet according to manufacturer’s instructions.
B. Drop 1.36 kg (3 pound) steel ball from 152 mm (6 inches) above shelf and bottom surfaces. Center each drop between supports.
C. Open drawer two-thirds of it depth. Center 1.36 kg (3 pound) steel ball over exposed portion of drawer bottom surface and drop from 152mm (6 inches) above surface.
1. The shelves and bottoms shall not be damaged (except for superficial indentation where ball struck) and shall retain their original positions.
2. The drawer shall not be damaged (except for superficial indentation where ball struck) and shall operate as before the rest.
3. There shall be no visible sign of joint separation or failure in any part of the cabinet or mounting system.
Impact on Base Cabinet Front and Door.
Purpose: To test ability of base cabinet, cabinet door, and connection means to withstand impacts such as Children may cause in falling against or hitting the Units.
A. Mount base cabinet according to manufacturer’s instructions.
B. Using 4.54 kg (10 pound) sandbag and 305 mm (12 inch) drop, apply impact to center of cabinet door as shown in drawing.
C. Repeat test with door opened to 45°angle.
D. Tighten hinge screws, if necessary, before inspection
1. After impact, there shall be no visible sign of damage to the cabinet door, hardware, or hardware connections. Door shall operate as before the test.
2. There shall be no visible sign of joint separation or failure of any part of the cabinet or mounting system.