Category Archives: Civil Engineering

Wastewater Management

Wastewater management pdf files of handbook, paper, guide, report, manuals

Title Type Link
 Wastewater Management Book Chapter
 Industrial Wastewater Management  Guide
 Decentralized Wastewater Management  Paper
 Sustainable Wastewater Management  Handbook
 Creative Community Design and Wastewater Management  Report
 Financing Wastewater Management  Book Chapter
 Urban Wastewater Management  Paper
 On-Site Wastewater Management  Guide
 Handbook on Wastewater Management for Local Representatives Handbook
 Introduction to Wastewater Management Book Chapter
 Sanitation and Urban Wastewater Management Book Chapter
 Wastewater Systems – Augmentation Handbook Handbook
 Planning and Commissioning Wastewater Treatment Plants Manual  

Water Filtration

Water filtration pdf links for manual, tips, practices, theory, or handout

Title Type Link
 Water Filtration Systems Manual
 Diatomaceous Earth Filtration for Drinking Water  Paper
 Membran Filtration and UV Water Treatment  Report
 Use of Ceramic Water Filters in Cambodia  Report
 Home Water Treatment  Paper
 Tips for Selecting Water Treatment Systems  Tips
 Granular Bed Water Filters  Paper
 4-Stage Reverse Osmosis Water Filtration System  Manual

Water Purification

Water purification pdf papers, manual, reports, practices, handbook, lecture notes

Title Type Link
 Water Purification Manual
 Water Purification  Paper
 Purification of Waste Water with Effective Microorganisms and its Utilization in Agriculture  Paper
 Photocatalytic Water Treatment and Purification  Presentation
 Designing a Water Purification System for a Developing Community in Algeria  Paper
 A simple high efficiency solar water purification system  Paper
 Water Purification System  Reports
 Purification of Brackish Water using Hybrid CDI-EDI Technology  Paper
 Water Purification Handout
 Solar Water Purifier Practice
 Desalination and Water Purification Technology Roadmap Report
 Reverse Osmosis Water Purification Systems Paper

Water Supply

Water supply textbook, ebook, handbook, manual, reports, paper, pdf

Title Type Link
 Water Supply Book Chapter
 Manual on Treatment for Small Water Supply Systems  Manual
 Guidelines for Drinking Water Supply  Guide
 Rural Water Supply Design Manual  Manual
 Water Supply Affloat  Book Chapter
 Water Supply Systems and Evaluation Methods  Handbook
 Sanitation and Water Supply  Paper
 Measuring Chlorine levels in water supplies  Practice


Title Type Link
 Public Water Supply Manual Manual
 Water Supply and Wastewater Disposal Manual  Manual
 Safe Water Supply  Practice
 Emergency Water Supply Planning Guide for Hospitals and Health Care Facilities  Guide
 Planning for Emergency Drinking Water Supply  Guide
 Water Supply and Sanitation Policy  Policy
 Water Supply, Water Distribution  Manual
 Water Supply, Water Treatment  Manual

Water Treatment

Water treatment pdf papers, ebooks, lecture notes, manuals

Title Type Link
 Water treatment Book Chapter
 Technologies for Water and Wastewater Treatment  Paper
 Introduction to Wastewater Treatment  Paper
 The History of Drinking Water Treatment  Paper
 Drinking Water Treatment  Paper
 Water Treatment Mathematical Formula  Notes
 Primer for Municipal Wastewater Treatment Systems  Paper
 Nanotechnology for Water Purification and Waste Treatment  Presentation


Title Type Link
 Disinfectant Use in Water Treatment Book Chapter
 Electrodialysis Treatment of Surface and Waste Waters  Paper
 Advanced Waste Water Treatment  Lab Module
 A Guide to Drinking Water Treatment Technologies for Household Use Guide
 Ballast Water Treatment Technology  Paper
 The Use of Phosphates For Potable Water Treatment  Paper
 Water Supply, Water Treatment Manual
 Planning and Commissioning Wastewater Treatment Plants Handbook

Medical Gas and Vacuum Systems – Plumbing Systems and Design

Medical Gas and Vacuum Systems
Plumbing Systems and Design 22006; Vol. 5: No. 1
by Anon

This continuing education article on medical gas and vacuum systems begins with a system designer?s checklist, tailored to help meet specific client needs and with steps for new construction and for additions to existing facilities. A primary consideration is to locate and count the number of inlet/outlets (stations). Codes do not mandate the number to be provided. Guidance is available in American Institute of Architects, National Fire Protection Association, and ASPE publications. Flow rates are dealt with next. Flow rates and diversity factors vary for individual stations in each medical gas system, and system use also varies as a function of several factors. Tables present outlet rating charts for medical gas-vacuum piping systems to assist in calculations. Medical-gas stations are often included along with other services in patient head-wall systems. These are sometimes the provenience of the plumbing engineer and sometimes included in other sections of the specifications. Other types of medical gas dispensing equipment include special ceiling-mounted medical gas outlets and high-pressure nitrogen dispensing equipment, often used to power surgical tools and other support equipment. An example detailing ceiling outlets, surgical ceiling columns, surgical gas tracks, and articulating ceiling-service centers used to supply medical gas to surgery rooms is presented. Medical gas storage is the last major topic. The designer must determine storage capacity, pipe sizing, and location(s) for the source. Sources for oxygen, nitrous oxide, and medical compressed air have unique characteristics, and each of these gases is detailed separately as regards storage. Each system consists of primary and reserve storage. Oxygen may be sourced in a bulk system or a cylinder-manifold-supply system. Each has special considerations. Nitrous oxide is most generally sourced in a cylinder-manifold system, with many of the same consideration as for oxygen cylinder-manifold supply. System demands for nitrous oxide can be more difficult to calculate. In addition to a high-pressure cylinder-manifold system, medical compressed air may be generated on site from atmospheric air with a special compressor system. Compressor types designed specifically for use in medical applications include the reciprocating and rotary screw (positive-displacement) types and the centrifugal (dynamic) type. These compressor types are rated differently; equations and conversion factors are presented so that more direct comparisons among them can be made.

Available  at   : ASPE Publications

Designing Combined Standpipe and Sprinkler Systems – Plumbing Systems and Design

Designing Combined Standpipe and Sprinkler Systems.
Plumbing Systems and Design 22006; Vol. 5: No. 1
by Roy, Matthew

Combination standpipe and sprinkler systems are commonplace in most multi-occupant residential and commercial buildings. In these and other light and ordinary hazard occupancies, National Fire Protection Association, NFPA, standards allow the combined system to share the same piping, with the result of reduced installation costs and system maintenance requirements without compromised reliability. When used together in the past, the applicable standards, NFPA 13 (the standard for sprinkler system installation) and NFPA 14 (the standard for standpipe and hose system installation), produced system designs with conflicts and inconsistencies. The author believes that the most recent versions of the standards work well together when applied to light and ordinary hazard class buildings. Based on assumptions regarding local code requirements and use of the pipe method schedule of design, this article discusses how to employ both NFPA 13 and NFPA 14 in the design of light or ordinary duty combination standpipe and sprinkler systems. The author first presents approaches to design found in the individual standards, concluding that the two closely agree regarding calculation of water supply requirements. He presents an eight-step procedure for designing a combined system and provides an example using a 10-floor multi-usage residential and commercial building.

Available  at   : ASPE Publications

Pump Affinity Laws: Use with Caution – Plumbing Systems and Design

Pump Affinity Laws: Use with Caution
Plumbing Systems and Design 2007; Vol. 6: No. 8
by Ahlgren, Roy C. E.

The pump affinity laws provide a useful way to estimate the effect of changes in either the revolutions per minute (rpm) or the diameter of the impeller on a pump’s performance. In this article, Roy C. E. Ahlgren, discusses why these laws can be better used to predict performance in some cases as opposed to others. Using an example, he demonstrates how the pump affinity laws predict actual performance with better accuracy at variable rpms than after trimming the impeller. In addition to better predictions when efficiency changes are smaller, the affinity laws assume geometric similarity and noncavitating pump operation with cold water. Finally, the affinity laws cannot take into account system curve, which also affects pump efficiency. The article includes figures showing several curves and tables of curve estimates.

Available  at   : ASPE Publications

Specialty Systems: Hemodialysis Facilities – Plumbing Systems and Design

Specialty Systems: Hemodialysis Facilities.
Plumbing Systems and Design 2006; Vol. 5: No. 4
by Schultz, Carl C

Water and water treatment are the very heart of a dialysis system. Plumbing engineers must understand system design, installation, and maintenance. Dialysis fluid, or dialysate, is composed of water and a concentrated solution that contains the same electrolytes as normal extracellular fluid. Extracellular fluid is the body fluid outside of cells that includes blood plasma, lymph, and the interstitial fluid between cells. Water is added to the concentrate to produce a solution at a similar dilution. In the two types of dialysis systems, water is fed via a loop, which allows high flow rates, water velocity being an important factor. Changes in pipe direction should be done with a 45-degree angle, and connections to dialysis stations should be as short as possible. Those connections should be of types to facilitate removal or change without dismantling the piping system. Valves should be PVC or CPVC, with further technical details listed. Water should be sampled and analyzed periodically to measure both microbe numbers and disinfectant level. The system should be disinfected on a regular basis. Details are included. An illustrated sidebar explains types of dialysis treatments.

Available  at   : ASPE Publications

Methods for Designing Site and Roof Drainage Systems – Plumbing Systems and Design

Methods for Designing Site and Roof Drainage Systems
Plumbing Systems and Design 2008; Vol. 7: No. 8
by Messina, Joseph V

Most codes and standards that apply to the design of site and roof drainage systems are governed at the local level, and these can vary greatly from region to region across the country. As a result, it is incumbent upon plumbing designers to be familiar with the actual code used by the jurisdiction in which they are working. The designer should also be in contact with the authority having jurisdiction, AHJ, early in the process, because the AHJ must approve the methods for draining building sites before the permit is issued. Considerations that apply to site drainage include oil/water separators and pollutant-removal devices, and retention basins and detention ponds. There is an abbreviated discussion of combined storm/sanitary systems; these are rarely used because they place additional loads on municipal sewage disposal plants. Materials for aboveground and underground piping and bedding materials are discussed. A large portion of the article is devoted to interior storm drainage system considerations. The designer must research local weather conditions and details of the building to be constructed (type of roof, vertical wall and parapet height, etc.). The steps necessary to determine the primary system?s pipe size and slope are presented and discussion is complemented by tables and figures. Secondary overflow system requirements, pipe expansion and anchoring, backflow prevention, and leaders are all discussed within the context of the interior storm drainage system. Drainage control from the roof into the storm drainage system is covered next. This is often accomplished by means of either a controlled-flow drainage system or a siphonic roof drainage system, although neither system can be employed when the roof is to be used for functions that preclude some level of water storage. The roof drain placement section includes a list of acceptable rule-of-thumb minimum dimensions. Secondary roof drainages systems are often mandated by the AHJ, and sizing, types, and disposal points are discussed. The design method for exterior storm drain systems, those used to drain parking lots and other areas, is different than that used for interior drainage systems. A formula and table of runoff coefficients for different surface types is provided.

Available  at   : ASPE Publications