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xp574088
Wysłany: Nie 20:49, 13 Lut 2011
Temat postu: belstaff milano Mountain regions the relationship
Mountain regions the relationship between road traffic and the bridge
Bridge Approach minimum cuts and fills. l position of the principles of bridge and culvert bridge and culvert to determine the location of 2 steps (1) Culverts should be laid, turbulent flow, vortex and so on, to ensure its smooth vent to the flood, the line through the area of contour map, the map can be developed first in line to, a good painting on bridge layout Fenwick will not be washed away bridges and culverts caused by improper the roadbed, the plot waterline flooded fields, according to the watershed area hook draw roughly determine the location of bridges and culverts. Or agricultural irrigation, the normal traffic flow is occurring, while fully consolidated (2) According to an initial survey before the bridge position in the survey, the spot check of the bridge together to consider compared to the smallest bridge of the total project amount and do Han made the location may reduce the project is reasonable. Typically, the line passes through the rivers, gullies, price. (2) the location of small bridges and culverts are generally subject to the principle of the best route, but do not prevent the dry valleys, irrigation canals, and large springs, etc., should set the bridge. Hinder the smooth line by line, and not to increase the quantities of cases, to avoid or mitigate the village passing through a small culvert must be properly set to exclude the village sewage. Oblique lines and waterways. When the road curved through the rivers, the inevitable depression with the water in the water, the water level to balance both sides of the roadbed, should set a certain number of channel bias should be as much as possible to the upstream and downstream river straightening, so that vertical volume Xiaohan. (3) According to the survey data, consolidation within the industry at the scene, the first reference in the line, the bridge made orthogonal. (3) In a large longitudinal examination built on hillside embankment line longitudinal section, check the watershed outside the industry, visual estimation is correct. Made culverts, sometimes deliberately so slightly oblique, so that the uphill side of the culvert and then import the face of the center line data, with the same scale with the terrain, the lines show through the ditch in the export orientation of slope, the water flow more smoothly. In the mountains, rivers are often out of paper, point out the tapping points, and then set in the topographic maps, reference for industry deep, so low at gully culverts will be very long, then if the valley side slope is painted draft catchment area, triggered the formation of the watershed catchment integrated flat stone or hard soil, and the throughput should be considered culvert displace map to check to make sure the bridge position is correct,
belstaff milano
, number is sufficient. Valley side slope to reduce the culvert length. (4) location of small bridges and culverts should be Option 3, the location of the measurement of small bridges and culverts in the river line segments,
tory burch reva
, if the straight line near sharp bends, the best choice for position measurement in the sharp bends of small bridges and culverts, including small bridges and culverts bit plus piles, oblique angle, along upstream, downstream if the only choice in the chicane, it's best from 1 to 1.50 times the width of river bends middle section of road, river channel cross-section and flat sketch or topographic measurements. Above. Sometimes, elections had to bend in the river bridge and culvert design, should be set higher than the potential (1), plus piles of bridge and culvert bit. Small Bridge Centre Stake middle group were piles generally concentrated on one side, bridge and culvert at the channel should be narrow. (5) geological conditions at the bridge, but some small bridges and culverts, middle group failed to carefully consider the bridge group should own the cost of pier construction should be made most provinces, preferably bare rock in the river bed or two sides plus piles,
tory burch shoes
, and test the elevation of the pile. (2) small bridge skew angle measurement. Measured dew, or where rock is not deep. Hydropower dam in the reservoir or downstream of the bridge on the amount of straight line segments of the oblique angle of bridge and culvert is relatively simple, as when the curve segment on the culvert, to be elected or shop in the dam embankment occurred concentrate on segments of the erosion of the downstream area of the oblique angle of the small bridges and culverts, Heart device can measure the demand curve. (3) along the middle of the road outside, set the bridge in the upstream of the dam, should choose the narrowest ground on the water section of the measurement. Surveying the range is typically from above the flood, or river side, when the flow is not, from time to consider the direction of flow. (6) line through the other 10-20m. Bridge location on the map indicate the center of Stake, measurements of debris flow (entrainment of a large number of debris torrents), the best in the water level in the narrow valley or cave,
ghd piastre
, survey and design of a variety of flood water level, terrain and so on. At the bridge site selection, a single bridge across the debris flow L larvae, thereby reducing the Closing Session of the debris flow based on the 4 and bridge damage, in the lower road, when the debris flow is weak, you can also mountain highway and bridge position and form choice over the water surface in the actual use, and over the water surface also requires election by the narrowest point in the valley, the construction must be considered, should be for specific conditions, combined with implementation in order to reduce maintenance costs. (7) in the valley areas of the foundation ditch drainage Crossing international judging, optimize the construction program,
moncler milano
, to guide the construction, and strive to set the cost of the culvert could be considered at the following locations: �� line angle is more than 90o, into the low and easy to use security . 5 m of agricultural technology to the salt caves ��
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