Design options for self-cleansing storm sewers

1996 ◽  
Vol 33 (9) ◽  
pp. 215-220 ◽  
Author(s):  
Chandramouli Nalluri ◽  
Aminuddin Ab. Ghani
Keyword(s):  
Cohesive Sediments ◽  
Stress Criterion ◽  
Sediment Bed ◽  
Sediment Size ◽  
Codes Of Practice ◽  
Design Charts ◽  
Design Options ◽  
Minimum Velocity ◽  
Limited Depth ◽  
Storm Sewers

A list of available codes of practice for self-cleansing sewers is presented and a review of appraisals of minimum velocity criterion is summarised. Comparisons of newly developed “minimum velocity” criteria and “minimum shear stress” criterion are presented. Some design charts are also given. These charts are applicable to non-cohesive sediments (typically storm sewers). It appears that sediment size and concentration need to be taken into account, and that a limited depth of sediment bed is recommended for large pipes (diameters > 1000 mm) to maximise their transport capacity.

scholarly journals Selection of optimal keel block for docking ships with large bow and stern overhangs

2020 ◽  
Vol S-I (2) ◽  
pp. 57-62
Author(s):  
S. Antonenko ◽  
Keyword(s):  
Structural Strength ◽  
Design Options ◽  
Limited Depth ◽  
Selection Of

This paper discusses various design options for a keel block needed for accommodating Frunze (now Admiral Lazarev) nuclear cruiser in a floating dock taking into account structural strength restrictions for both cruiser hull and the keel block, as well as limited depth of docking basin.

Elastic-Plastic Computations as a Basis for Design Charts for Torispherical Pressure Vessel Ends

1970 ◽  
Vol 185 (1) ◽  
pp. 869-877 ◽  
Author(s):  
C. H. A. Townley ◽  
G. E. Findlay ◽  
A. M. Goodman ◽  
P. Stanley
Keyword(s):  
Pressure Vessel ◽  
Master Curves ◽  
Elastic Plastic ◽  
Codes Of Practice ◽  
Design Charts ◽  
Starting Point ◽  
Test Pressure ◽  
Design Factors ◽  
Design Stress ◽  
Design Pressure

A series of elastic-plastic calculations has been carried out on torispherical drumheads subject to internal pressure. From the results of this analysis, master curves have been prepared which are independent of factors such as the ratio of design stress to yield stress and the ratio of design pressure to test pressure. These curves provide a rational starting point, from which Code Drafting Committees can derive, in simplified form where necessary, design factors to meet the requirements of specific Codes of Practice. An example of this use of the master curves is included. Correlation between the theoretical analysis and the available experimental data on torispherical drumheads is shown to be good. Conversely, the experimental results show that drumheads designed using factors derived from the master curves will perform satisfactorily in service. The principles illustrated in this paper can be applied to many other types of component commonly used in the pressure vessel industry. In this way, it is possible to provide a series of master curves which would form a rational basis, common to all codes, for the preparation of detailed design rules.

Mission design options for human Mars missions

Mars ◽  
2007 ◽  
Author(s):  
Paul D Wooster ◽  
Robert D Braun ◽  
Jaemyung Ahn ◽  
Zachary R Putnam
Keyword(s):  
Mission Design ◽  
Design Options ◽  
Mars Missions
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