详情

原文传递 Cost Benefits for Overhead/Underground Utilities.

题名：	Cost Benefits for Overhead/Underground Utilities.
关键词：	Construction; Cost Benefit Analysis; Electric Utilities; Gas Utilities; Highways; Maintenance; Overhead; Project Planning; Public Utilities; Relocation; Underground; Utilities
摘要：	Each year the Maryland State Highway Administration (SHA) undertakes a number of projects that require the relocation of utilities either overhead or underground. In order to make cost-effective decisions for future utility relocation projects, SHA has conducted an analysis of the costs of construction, maintenance and emergency repairs of telecommunications including fiber optics and electric distribution facilities associated with overhead versus underground utilities. This report presents specific cost and reliability information for underground and overhead utility installations for four utility companies located throughout Maryland. The report shows that underground installations reduce vehicular crashes with poles and possible fatalities, reduce the exposure to electromagnetism fields reducing health hazards, improve the aesthetics of neighborhoods and may increase the assessment value of the nearby properties. This report also presents some disadvantages of underground installations, including higher installation costs and problems accessing equipment for repairs. Advantages of overhead installations include faster service restoration, streetlights can be easily installed, and they can operate at higher temperatures. However, unlike underground installations, overhead installations can be negatively affected by storms, wildlife and vehicular impacts. The lifecycle cost comparison of overhead and underground utility installations/relocations based on similar service capabilities used several variables to generate a realistic model. In each scenario analyzed, no result yielded a higher net present value (NPV) of benefits than the NPV of costs.
报告类型：	科技报告