Wind Loads. What to do about calculating wind loads comes up from time to time. The problem with figuring out wind loads is the wind. In the realm of things near the ground, the wind is very erratic due to interaction with ground features. This can make it difficult to really know what speed is effectively acting on a structure in close proximity to the ground.
ONVIF is an open industry forum for the development of a global standard for the interface of IP-based physical security products.ONVIF is committed to the adoption of IP in the security market. The ONVIF specification will ensure interoperability between products regardless of manufacturer.The cornerstones of ONVIF are: 1  Standardization of ....NVIF is an open industry forum for the development of a global standard for the interface of IP-based physical security products. ONVIF is committed to the adoption of IP in the security market. The ONVIF specification will ensure interoperability between products regardless of manufacturer. The cornerstones of ONVIF are: 1  Standardization of ....
UNF (Unified Fine) is the same as UNC except that for each size of bolt, the number of threads per inch is higher, so the thread is finer. UNEF (Unified Extra Fine) is the same as UNF except that the number of threads per inch is even higher for each fastener size. UNF and UNEF fasteners are generally available only from industrial fastener suppliers. 4UN, 6UN, 8UN, 12UN, 16UN, 20UN, 28UN, and 32UN are thread series in which the number before the UN indicates the number of threads per inch.