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The purpose of the covering is to protect the wooden structural members from the weather.
Why did old bridges have roofs. No universally accepted example survives above ground. Because it wouldn t be a covered bridge if it didn t. Others say that since these bridges look like barns animals would cross without fear. Unaltered examples of early crib barns normally have roofs of undressed wood shingles.
They usually are covered to help keep the wooden floor from getting frosty in winter. The rustic appearance of crib barns is one of their most striking features. The earliest roofs constructed by man were probably thatched roofs that were made of straw leaves. Uncovered wooden bridges typically have a lifespan of only 20 years because of the effects of rain and sun but a covered bridge could last 100 years.
True covered bridges are defined by a timber truss or frame that distributes the weight of. A surprising number are on roads providing motorists with a brief back in time experience. A covered bridge is a technical name for a specific kind of structure not just any bridge with a roof. The roofs cover the bridges that s why they re called covered bridges if they didn t have roofs they wouldn t be covered bridges.
As to why covered bridges were built some reckon that the roofs protected the beams from rotting or from freezing in bad weather. Truth is one of the jobs of a bridge tender in the old days was spreading snow on the floor of a covered bridge in winter so sleighs could get across. In areas with very high snowfall such as vermont the weight of snow could demolish a wooden bridge as most were. A covered bridge is a timber truss bridge with a roof decking and siding which in most covered bridges create an almost complete enclosure.
There are however many remains of anglo saxon church. A sloping roof allowed the. Crib barns were typically built of unchinked logs although they were sometimes covered with vertical wood siding. Roof covering of the top of a building serving to protect against rain snow sunlight wind and extremes of temperature roofs have been constructed in a wide variety of forms flat pitched vaulted domed or in combinations as dictated by technical economic or aesthetic considerations.
A few characters say the bridges were covered to prevent horses from getting spooked when they realized they were above flowing water but about this theory we will not even speak. Anglo saxon secular buildings in britain were generally simple constructed mainly using timber with thatch for roofing. Anglo saxon architecture was a period in the history of architecture in england and parts of wales from the mid 5th century until the norman conquest of 1066.
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