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<br />e <br /> <br />e <br /> <br />City of Houston <br />Department of Public Works <br />and Engineering <br /> <br />TYPICAL ASSIGNMENTS OF PROJECTS <br /> <br />Curve A <br /> <br />Curve A is intended to apply to assignments of which the following are typical examples: <br /> <br />Water, wastewater and industrial waste treatment plants (not to include Rehabilitation) <br />Low Cost, or complicated, waterfront and marine terminal facilities <br />Complicated darns and hydro-power installations <br />Bridges <br />Grade crossing eliminations <br />Urban streets and freeways, included related drainage facilities <br />Water distribution lines under 24-inch diameter <br />Pumping stations <br />Air pressure tunnels <br />Swimming pools <br />Foundations <br />Stormwater detention facilities requiring TNRCC permits <br />Roads and streets (reconstruction) <br />Storm sewers and drains less than 42-inches in diameter <br /> <br />Curve B <br /> <br />Curve B is intended to apply to less complicated assignments of which the following are examples: <br />Large intercepting and relief sewers <br />Large intercepting storm sewers and drainage structures <br />Sanitary sewage collection lines 24-inch diameter and over <br />Water distribution lines 24-inch diameter and over <br />Dams of average complexity <br />Airport paving and grading <br />Irrigation works, except pumping plants <br />Railways <br />Levees and flood walls, conventional <br />Sewer and water tunnels (free air) <br />Earthwork and dredging <br />Highways and rural roads, except low-cost rural roads <br />High cost wharf facilities of conventional design <br />Retaining walls and bulkhead, conventional <br />Roads and streets (new construction) <br />Stonnwater detention facilities requiring only local approvals <br />testing. <br /> <br />ATIACHMENT B <br />