The Sea-coast: (1) Destruction (2) Littoral Drift (3) ProtectionLongmans, Green, and Company, 1902 - 361 páginas This title deals with the effects of erosion and littoral drift on the English and continental coast-lines bordering the North Sea, and outlines protective measures including sea-walls and groynes. |
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Página 103
... spaced 6 feet apart centre to centre , varying in length from 18 feet to 24 feet , and driven originally 12 feet into the London Clay , of which the substratum of the beach is composed ; they were strutted seawards with 12 inches square ...
... spaced 6 feet apart centre to centre , varying in length from 18 feet to 24 feet , and driven originally 12 feet into the London Clay , of which the substratum of the beach is composed ; they were strutted seawards with 12 inches square ...
Página 106
... spaced 5 feet apart and have a 12 inches by 12 inches raking strut every 20 feet apart . Where this wall has recently been renewed the timber has been creosoted . In front is a bank of shingle , the surface of which varies from 2 to 10 ...
... spaced 5 feet apart and have a 12 inches by 12 inches raking strut every 20 feet apart . Where this wall has recently been renewed the timber has been creosoted . In front is a bank of shingle , the surface of which varies from 2 to 10 ...
Página 107
... spaced 3 feet apart , are driven in the clay and support 11 - inch by 2 - inch planking . The piles are supported by timber ties . At the back of the board- ing is a concrete wall 9 feet high , 1 was Beach foot 6 inches wide at the top ...
... spaced 3 feet apart , are driven in the clay and support 11 - inch by 2 - inch planking . The piles are supported by timber ties . At the back of the board- ing is a concrete wall 9 feet high , 1 was Beach foot 6 inches wide at the top ...
Página 108
... spaced 4 to 5 feet apart each way , driven through the sand into the clay bed below . The lower part , which extends about 40 feet up the face , rakes at an angle of 15 degrees , and the upper length of 10 feet at an angle of 30 degrees ...
... spaced 4 to 5 feet apart each way , driven through the sand into the clay bed below . The lower part , which extends about 40 feet up the face , rakes at an angle of 15 degrees , and the upper length of 10 feet at an angle of 30 degrees ...
Página 112
... spaced 1 foot 6 inches apart . Above this for 30 feet the slope is 1 in 7 , which is pitched with basalt . Above this for 20 feet the slope is 1 in 8 ; then for 200 feet 1 in 17. This upper part is protected with clay and straw matting ...
... spaced 1 foot 6 inches apart . Above this for 30 feet the slope is 1 in 7 , which is pitched with basalt . Above this for 20 feet the slope is 1 in 8 ; then for 200 feet 1 in 17. This upper part is protected with clay and straw matting ...
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The Sea-coast: 1. Destruction, 2. Littoral Drift, 3. Protection William Henry Wheeler Vista completa - 1902 |
Términos y frases comunes
12 feet 20 feet alluvium angle bank of shingle basalt beach in front beach material Blackpool boulder clay boulders Bridlington carried chalk chalk cliffs channel chert clay coast coast-line composed concrete considerable constructed Crown 8vo denudation deposited depth derived direction distance dunes east effect entrance erected erosion estuary extends face feet high Felixstowe flints flood tide foot gravel groynes harbour headland heavy gales height high tides high water Humber Illustrations inches in diameter island jetty Kilnsea land length limestone littoral drift London Clay low groynes low water marshes mile wide Morecambe Bay on-shore gales pebbles pier piles placed planking promenade protection quantity quartzite rise river rocks sand and shingle sand-hills sandstone sandy sea-wall seaward shingle and sand shingle-bank shore slope spit spring tides Spurn Point stones surface tidal timber varying wall washed waves breaking width wind Withernsea yards wide
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