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Joint Photographic Experts Group Image  |  2005-02-07  |  69KB  |  680x510  |  16-bit (50,439 colors)
Labels: hakham | reckoner | signaling device | sky
OCR: What are the common mistakes made when using snow guards? Using ground snow load instead of roof snow load The second common mistake made when designing snow retention devices use ground snow load calculation rather than roof snow load. T most cases roof snow S reduced from ground snow some figure and so this error will just yield rather conservative design But in other cases this IS not SO.