assaabloy.com 299 Hinges Introduction Step 1-3 Example A perimeter security door is 1,150mm wide Weighs 50kg Fitted with 5kg of ironmongery Fitted with a backcheck door closer (+75%) Subject to high wind forces (+10%) Subject to physical abuse (+10%) Step Process Step 1 Initial adjusted weight Basic weight: 55kg (50kg plus 5kg) 107kg (55kg plus 95% = 55 x 1.95) [95% is from 75%+10%+10%] Step 2 Final adjusted weight 135kg (107kg plus 26% = 107 x 1.26) [26% is from width 1,150mm) Step 3 Hinges required 135kg is within Grade 14 range of 121-160kg and we recommend superior Journal supported hinges (Grade 14) Because of the potential for abuse, severe duty hinges would be indicated. However, Grade 14 already meets this requirement Hinge grade Step 3 Determine hinge grade required The final adjusted weight of the door should be checked in the table below to determine which grade of hinge is required. However, please note that hinges which could be subject to abuse or rough handling may need to be of a higher grade (heavy or severe duty) than would otherwise be indicated by the door weight alone. Check the table to make sure that a suitable hinge is specified. Please note: Grade 11 hinges are not generally suitable when a door closer with backcheck is specified. Final adjusted weight Hinge grade required Recommended hingess Up to 80kg Grade 11 3220, 604, CE11 80kg - 120kg Grade 13 3228, 3248, 603, 605, J-C433, CE13 121kg - 160kg Grade 14 3278, 3288 Step 2 Check door adjusted weight against door width Having calculated the initial adjusted weight of the door, this should be cross referenced with the width of the door in the chart below, to identify the width adjustment. Multiply the initial adjusted weight by the width adjustment to obtain the final adjusted weight. Note: For door sizes not listed in the chart, use the formula: 2 - (height/width) % Door size Width adjustment Height (mm) Width (mm) 2,000 Up to 1,000 0 2,000 1,050 +10% 2,000 1,100 +18% 2,000 1,150 +26% 2,000 1,200 +33% 2,000 1,250 +40% If your project requires non-graded or lower graded hinges for non-fire rated or internal doors please contact us to get further information on suitable hinges we can supply.
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