Blonde Girl Undresses Her Black Panties On The Timber Roof Truss Framework With An Open Ceiling Area

• Arch-braced truss
Lacking a tie beam, the arch-braced truss gives a more open look to the interior of the roof. The principal rafters are linked by a collar beam supported by a pair of arch braces, which stiffen the structure and help to transmit the weight of the roof down through the principal rafters to the supporting wall.
• Hammerbeam truss
The hammerbeam roof was the culmination of the development of the arch-braced truss, allowing greater spaces to be spanned. The double hammerbeam roof of Westminster Hall in London, designed by Hugh Herland and installed between 1395 and 1399, was the largest timber-roofed space in medieval Europe, spanning a distance of just over 20 metres (66 ft). It is considered to be the best example of a hammer-beam truss in England.