Padma Multipurpose Bridge Project

the Transit Noise and Vibration Impact Assessment, the maximum acceptable vibration levelsgenerated by commuter rail branch lines for Residences and buildings where people normally sleep isapproximately 74 (VdB re 5 x 10 -8 m/s).Table 7-27: Predicted vibration level along the approach railway corridor.Train Speed(km/h)Vibration (VdB re 5 x 10 -8 m/s)Distance to Receiver (m)25 50 75 100 20080 64.3 57.5 52.9 49.2 38.7100 66.2 59.4 54.8 51.1 40.6125 68.1 61.4 56.7 53.1 42.5Note: Based on Estimates in Transit Noise and Vibration Impact Assessment, FederalTransit Administration, 2006Major Positive Impacts Employment Transport communication170. Employment: As seen in Bangladesh, there is no potentiality of development along the railwayembankment, primarily due to the lack of access to rails from every point as in case of the roaddevelopment. Hence employment associated with railway network development will come fromincreased transport and commercial activities induced with railway network development. A largenumber of people will also get employment in the O/M works of the railway network.171. Transport Communication: The purpose of providing railway services in the project is to takethe railway transport benefits from it, which will be realized during O/M stage of the project. TheTrans-Asian Railway link will use the bridge and the approach rails proposed in the project. Since theTrans-Asian Railway is expected to bring huge benefits on railway transport sector, operation of theapproach rails will be a part of realizing these benefits. Typical railway transport benefits include safe,cheaper and fast transport of goods/commodities, passengers, using the approach rails that willpromote business and commercial activities in both parts of the country, particularly in south-westernpart. The benefits will go beyond the country and spread over the south and central Asian countriesthat will use Trans-Asian Railway.7.4.1.5 Construction of Public Utilities Network172. Three public utility crossings are designed in the bridge: High pressure gas transmission pipeline; High voltage power transmission line; and Optical fiber telecommunication cable.173. These facilities in the bridge will be operational once their associated lines from sources havebeen completed. Construction of these associated lines connecting the existing network is beyond thescope of this project. Concerned department dealing with the corresponding facilities also do not haveany plan of their alignment at this stage. Therefore specific identification of environmental issues outof their construction is difficult. However, typical assessment is made in the following section:Major Negative Impact Agriculture174. Agriculture: Construction of these networks will require land acquisition. It is expected that thealignment will be through open land which is primarily used for agriculture purpose. As such,agriculture production will be potentially affected.7-39