Arbeitsblatt: Voices 1 / Unit 3 / Dictation

Voices_1 • unit_3 Bridges Dictation unit 3 Bridges You can find countless bridges all over the world, and you rely on them every day to cross obstacles like streams, valleys, and railroad tracks. But do you know how they work? Or why some bridges are curved while others are straight? Engineers must consider many things like the distance to be spanned and the types of materials available before determining the size, shape, and overall look of bridge. Since ancient times, engineers have designed three major types of bridges to withstand all forces of nature. The main types of bridges are arches, beam bridges, cable-stayed bridges, cantilever bridges and suspension bridges. You will have noticed that this list does not include truss bridges. These are usually arches, beams or girders, or cantilevers, or they may be parts of bridges, for example the suspended span of cantilever bridge, or the deck of cablestayed bridge or suspension bridge. The phrase truss bridge, however, is sometimes reserved for those which act primarily as beams, while the others are discussed under the heading of the bridges of which they form part. You could say that truss, like boxgirder or pre-stressed span, is more type of construction than type of structure. Dictation unit 3 Bridges You can find countless bridges all over the world, and you rely on them every day to cross obstacles like streams, valleys, and railroad tracks. But do you know how they work? Or why some bridges are curved while others are straight? Engineers must consider many things like the distance to be spanned and the types of materials available before determining the size, shape, and overall look of bridge. Since ancient times, engineers have designed three major types of bridges to withstand all forces of nature. The main types of bridges are arches, beam bridges, cable-stayed bridges, cantilever bridges and suspension bridges. You will have noticed that this list does not include truss bridges. These are usually arches, beams or girders, or cantilevers, or they may be parts of bridges, for example the suspended span of cantilever bridge, or the deck of cablestayed bridge or suspension bridge. The phrase truss bridge, however, is sometimes reserved for those which act primarily as beams, while the others are discussed under the heading of the bridges of which they form part. You could say that truss, like boxgirder or pre-stressed span, is more type of construction than type of structure. Voices_1 • unit_3 Bridges o a o l , r s a d i d n c s t n ( 1 o c o a b ( 3 a r a d 6 h y o k h l m s r i e h o s d r r o o k f a c i ( 1 6 i e , h e a l - t y d u p n i n h t h s a e k f f r d e , a r m l ( 3 3 s s i d s 3 4 a h t r f r d e , s h r d e n i t ( 2 1 r t s 2 3 r h s o m r s , i e e m r h y h a e h r d e r h a t o - i d r r t u s c o h r n e a ( 3 5 h y h n n o e i e h c o e r d e , m l p ( 2 7 h l h o a n e m w c ( 3 2 e m , n e r o s t i c 3 8 r d e h h s s r d e a t l v r a l - t y d p n f a e o f e s r 3 6 a e a u e s a l y e n l v e e s ( 2 6 p n s h c n l ( 2 2 r d e , o n y e i l o r o v ( 3 0 d v e r 3 1 u d e 7 i c a t l v r o o h h p , f e o e c a e 2 0 r s p o s n 2 9 r d e o c s e T ( 2 4 a t o e n s r ( 1 0 i e r d e r r ? h e l s ( 5 s e e n ( 1 7 o s p e d d ( 2 8 t e r d e . d s i ( 2 5 b i e r d e , i t r d e . r l r d e o r d e o j ( 1 8 i t d a ( 1 9 o n w o i e l l ( 1 3 l l a ( 1 5 y e u p s e ( 1 2 h a h n s e v r v r h g r t 9 e r i i t ( 1 4 e i n d h m l e s m ( 4 o e a y a e i l n r c s s e t 8 i t s n 1 1 o y r 2 r d e t p o o y t 3 7 o f r t e o l a r t f t e c s ( 3 9 Voices_1 • unit_3 Bridges You can find countless(1) bridges all over the world, and you rely(2) on them every day to cross obstacles(3) like streams(4) valleys(5) and railroad(6) tracks. But do you know how they work? Or why some bridges are curved(7) while others(8) are straight(9) Engineers(10) must consider many things like the distance(11) to be spanned(12) and the types of materials available(13) before determining(14) the size, shape, and overall(15) look of bridge. Since ancient(16) times, engineers(17) have designed three major(18) types of bridges to withstand(19) all forces of nature. The main types of bridges are arches(20) beam bridges, cable-stayed bridges, cantilever bridges and suspension bridges. You will have noticed(21) that this list does not include(22) truss(23) bridges. These(24) are usually arches, beams or girders(25) or cantilevers(26) or they may be parts of bridges, for example(27) the suspended(28) span of cantilever bridge, or the deck of cable-stayed bridge or suspension(29) bridge. The phrase truss bridge, however(30) is sometimes reserved(31) for those which(32) act primarily(33) as beams, while the others are discussed(34) under the heading(35) of the bridges of which they form part. You could say that truss, like box-girder or pre stressed(36) span, is more type(37) of construction(38) than type of structure(39)