Correspondence on 5205. The Hydraulic Problem Concerning the Design of Sewage-Storage Tanks and Sea-Outfalls.

Daymond, J R; Escritt, L. B.; Lloyd, D; Rees, Bernard Trevelyan

doi:10.1680/ijoti.1940.14313

Cited by 1 publication

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“…D=k√Q where 1.3 ≤ k≤ 1.46 (2) or k stipulated by the Lea formula (Garg, 1990) as highlighted by Equation 3. One may now add the Lagrange multiplier, λ, for optimisation.…”

Section: C_m= K_m Ld^mmentioning

confidence: 99%

“…Design considerations in combination with construction and installation techniques are important to determine suitable optimization techniques and methods that can be applied to marine wastewater outfalls. Once the appropriate location has been selected, hydraulic design elements become the most important part for the design process (Daymond, 1940). This paper explores Hydraulic design and its optimisation, as once the outfall position had been determined, the main considerations become almost entirely hydraulic focused factors (Daymond, 1940).…”

Section: Introductionmentioning

confidence: 99%

“…Once the appropriate location has been selected, hydraulic design elements become the most important part for the design process (Daymond, 1940). This paper explores Hydraulic design and its optimisation, as once the outfall position had been determined, the main considerations become almost entirely hydraulic focused factors (Daymond, 1940).…”

Section: Introductionmentioning

confidence: 99%

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Design Optimisation of Marine Wastewater Outfalls

2016

(SWES)

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This work presents a method that optimises the manifold pipe of a marine wastewater outfall under various hydraulic principles and cost considerations. Costing data from 37 international pipe supply companies providing pipes of various diameters for HDPE, steel and concrete were used to develop hybrid design equations for these three main materials used for outfall construction. These equations optimise the trade-off between pumping head and pipe size as well as the compromise between cost of material and favourable hydraulic characteristics. Various grades for each material were considered if relevant to marine outfalls. The resulting equations are very useful for outfall design, as oversizing of a project can incur unnecessary cost and under-sizing will not fulfil an outfall’s intended hydraulic purpose and will increase the operational cost in terms of energy

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“…D=k√Q where 1.3 ≤ k≤ 1.46 (2) or k stipulated by the Lea formula (Garg, 1990) as highlighted by Equation 3. One may now add the Lagrange multiplier, λ, for optimisation.…”

Section: C_m= K_m Ld^mmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%