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Composite Beams In Building Constructions., Mahendrasinhji M. Jhala

Masters Theses

"The use of composite beams is very common in bridge and. in building construction due to the fact that a savings in material is effected.

The study herein shows a simplified procedure for design of composite beams. A number of design charts for rapid selection of a wide-flange section and the necessary cover plates are presented herein. These charts are based on economic sections of steel beams when used in a simple span, if one knows the approximate depth of the beam, slab thickness, allowable stresses in the steel and concrete and live load moment, it is very easy to …

A Study Of The Relative Electric Resistance Of Commercial Steels And Pure Iron, William Eugene Wistehuff

Masters Theses

"The change in relative electric resistance of five commercial steels, Armco Ingot Iron and Pure Iron were studied over the temperature range of 800°C to 1100°C in an attempt to correlate the phenomena of hot or red shortness with a change in the Electric resistance .

The results from the above resistance measurements were compared with mechanical tests of the same steels to show that at the point at which the iron sulfide liquid forms there is a definite change in the slope of the electric resistance vs temperature curve.

Also studied was a discontinuity in the electric resistance vs …

Interaction Curve For A Beam Column., Mahendra Khushalchand Sanghavi

Masters Theses

"The theoretical interaction curve for a circular section is established. Experimentally the interaction curve f or a beam-column with a varying circular cross section, is established. The effect of stress history is discussed, and the comparisons of different interaction curves are made"--Abstract p.i

An Approach To Correlate Pulsed Radar And Photographic Data, Nasir Ahmed

Electrical and Computer Engineering ETDs

The Jet Propulsion Laboratory Lunar Program, which is supported by the National Aeronautics and Space Administration has two major projects underway. These are Ranger and Surveyor. The Ranger Project is in the flight stage whereas Surveyor is still in hardware development. The equipment of Ranger 3, 4, and 5 spacecrafts includes a radar altimeter to obtain radar reflection data, and a vidicon camera to obtain close-up pictures of the moon's surface. The data obtained in these flights will thus be available for analysis and comparison using the techniques outlined in this thesis.

The Irish Plumber And Heating Contractor, October 1962 (Complete Issue)

Building Services Engineering

No abstract provided.

A Parametric Study Of The Heat Transfer Characteristics Of A Moving Band Heat Exchanger, Larry Hyde Brim

Theses and Dissertations

In recent years much attention has been devoted to the development of efficient heat exchangers. The regenerative or moving matrix heat exchanger is one type which has been considered. Most regenerative heat exchangers use one of the conventional types of high area matrices mounted in a drum or disk in such a manner that it can be moved in a continuous cycle from a cold fluid stream to a hot fluid stream and back again. A rather different approach to the design of a regenerative heat exchanger which has been patented in this country is a set of flexible moving …

Stress Analysis Of An Infinite Cylinder With An Irregular Shaped Cavity Using Complex Variable Techniques, Gerald H. Lindsey

Theses and Dissertations

The advancement of modern technology has brought with It a demand upon the engineer for more thorough analysis techniques. This has been precipitated by the advent of missiles and space-craft that do not permit regular inspections to determine causes of failure, crack propagation, design weaknesses, etc. Thus, a more complete analytical work must be performed to facilitate a foreknowledge of reaction and performance of a particular design to its environment.

Cutting School Building Costs Through Educational And Architectural Planning, Construction Details, And Contracting, Alan Dale White

Graduate Student Research Papers

It was the purpose of this paper to point out the factors pertaining to educational and architectural planning, construction details, and contracting which collectively tend to lower the building expenditures. Specific architectural details such as wall cost comparisons, structural framing, and material recommendations have been purposely deleted. The suggestions presented herein, general in nature, do not seriously restrict architectural imagination, ingenuity, or creativity.

The Irish Plumber And Heating Contractor, August 1962 (Complete Issue)

Building Services Engineering

No abstract provided.

A Study Of A Continuous Photochemical Reactor, John Calvin Roe

Theses

The purpose of the investigation was to construct a continuous photochemical reactor, to reinvestigate certain portions of the work of Gaertner and Kent (7) and to extend the work to include some of the more common photochemical reactions.

A reactor of annular design with an elliptical light reflector, similar to that of Gaertner and Kent, was designed and constructed. The sources of radient energy were a cold General Electric T-6 Germicidal Lamp and a hot General Electric UA-9 Lamp.

The photochemical decomposition of oxalic acid sensitized by the uranyl ion was utilized as an actinometer. Fifty continuous runs were accomplished …

Extraction Of Technical Grade Lactic Acid With N-Butyl Alcohol, Joel Howard Kaplan

Theses

A possible step in a proposed industrial method for purifying and concentrating technical grade (44 per cent) lactic acid was investigated. The proposed method is the extraction of lactic acid from the crude grade by n-butyl alcohol, esterification of the extract by n-butyl alcohol and hydrolysis of the resultant purified ester to pure lactic acid. The extraction of lactic acid by n-butyl alcohol from the crude grade was the topic considered in this paper.

The extraction process was carried out at temperatures of 10.2°C, 25.0°C, 40.0°C and 60.00C using both U. S. P. lactic acid (85 per cent) and technical …

Preparation Of Aryl Sulfones By Sulfonation In The Presence Of Phosphrous Oxychloride, Donald Frederick Kruse

Theses

The use of phosphorus oxychloride as a dehydrating agent in the sulfonation of aromatic compounds has been investigated, particularly with respect to the formation of aryl sulfones. The sulfonation of several aromatic compounds using reagent grade sulfuric acid and phosphorus oxychloride has produced sulfone yields which exceed yields reported in the literature and obtained by more tedious methods. The presence of alkyl side groups on the benzene ring generally favors high yields of sulfone; whereas the presence of halogens generally reduces the yield. Sulfone formation is shown to be dependent upon the reactant ratios and upon the reaction time and …

Zirconium-Hafnium Equilibria, Edwin Otto Eisen

Theses

Equilibria in the thiocyanate-methyl isobutyl ketone process for the separation of zirconium and hafnium were studied. The effects of average thiocyanate concentration, feed acidity, and feed zirconium concentration on the separation factor of hafnium and the distribution coefficients of zirconium and hafnium were investigated. The hafnium separation factor was significantly dependent on the feed acidity but only slightly affected by the average thiocyanate concentration. No conclusion was reached about the effect of the feed zirconium conoentration on the hafnium separation factor. The polymerization of thiocyanic acid was found to be strongly dependent on the average thiocyanate concentration.

Vapor-Liquid Equilibria System : Carbon Tetra-Chloride, Toluene, N-Heptane, Joel Philip Pearlstein

Theses

A study was made of the vapor-liquid equilibria of the ternary system: carbon tetrachloride (CCl₄), n-Heptane (C₇H₁₆) and Toluene (C₇H₈). An Othmer still was used for the determination of the equilibria and the liquid and vapor compositions were ascertained by refractive index and density measurements. A comparison between experimental values and theoretical values was made using the Margules 3-suffix ternary equations for the correlation. Although the Margules equations did not correlate the experimental data very well, this is most likely due to the fact that the ternary solution was close …

Program Evaluation And Review Technique, Anthony Immaculate Agresta

Theses

The problem of planning, controling and evaluating complex projects both engineering and non-engineering has existed as long as the projects themselves. In the past the approach of management to this problem has been one which was based heavily on the use of historical information. There have been very few attempts to predict and control the occurrence of the objective event of these projects.

This thesis deals with a review of this problem and a new approach to the planning, control, and evaluation of these complex projects. This new approach is the Program Evaluation and Review Technique (PERT) which was developed …

Urea Adduction Of Oleic Acid, Leroy A. Dahm

Theses

The purpose of this project was to study the separation of the fatty acids and waxes found in cranberry skins by means of the formation of urea adducts. Current literature does not indicate equilibrium and rate data as controlled by mixing energy for the separation. Therefore this rate data was determined for the adduct formation of oleic acid, one of the constituents of cranberry skins.

A saturated aqueous solution of urea was used in the preparation of the urea adduct of oleic acid. Methyl isobutyl ketone and methanol were investigated as solvents for the fatty acids. Methyl isobutyl ketone was …

The Corrosion Of Zinc-Stainless Steel Couples In Flowing Sea Water, Henry Shaw

Theses

The effect of sea water flow on passivated stainless steel 304 coupled to high purity zinc was studied for more than 1000 hours at 23°C. The corrosion of both members of the couple increased over that of the metals alone. Zinc suffered severe pitting while the Stainless Steel was not visibly corroded, When the metals were exposed alone, zinc corroded uniformly while the stainless steel was not affected at all. The use of zinc coupled to Stainless Steel is not recommended in systems exposed to sea water.

Jurisdictional Disputes Within The Construction Industry, Dominick Joseph Magarelli

Theses

Work assignment disputes, known as jurisdictional disputes are common in the construction industry. They are not only costly but annoying as well, The construction industry has always been plagued with this type of dispute because each of its many craft unions regards certain types of work as a proprietary right. They jealously guard against any encroachment of their area of activity by other unions. Sometimes lines of demarcation between the various jurisdictions are not clear. Also, the development of new products and methods often brings with it clashes between unions each of whom claim exclusive right to the work assignment. …

Stress-Corrosion Cracking Of Brass, Paul A. Fossey

Bachelors Theses and Reports, 1928 - 1970

the mechanism of stress-corrosion cracking of brass has been sought for many years. Investigators have proposed many mechanisms, but each of these mechanisms has always had several drawbacks. This paper presents an account of experimental work done in the laboratory on this subject and compares it to the work of previous investigations. It evaluates the mechanisms presented by investigators and shows the failures of these mechanisms. A theory of Nitrogen Embrittlement is presented and an evaluation of this theory with experimental work follows.

The Irish Plumber And Heating Contractor, March 1962 (Complete Issue)

Building Services Engineering

No abstract provided.

Farm Water Storage : Circular Brick Reservoirs, R P. Harington

Journal of the Department of Agriculture, Western Australia, Series 4

A circular brick tank is a cheap and efficient water storage which can be easily built on any farm. The method described below by Kimberley Research Station manager R. P. Harington was used to build a swimming pool—storage on the station.

Flooding And Salt Problems In The Wheatbelt, Department Of Agriculture, Western Australia

Journal of the Department of Agriculture, Western Australia, Series 4

VALUABLE land has become salty in parts of the West Australian agricultural areas because most of the surrounding land has been cleared and developed for agriculture.

This salting of a small proportion of the land is part of the price paid for the development of agriculture in this State.

Drainage is not the answer to the wheatbelt flooding and salt land problems.

A more practical approach is to limit runoff from sloping land, and to make good use of salt-affected land by growing salt tolerant perennial pastures on it, says the Soils Division of the Department of Agriculture.

Irrigating Dry Season Crops In The Ord Valley : How To Prepare Land For Sowing, D F. Beech

Journal of the Department of Agriculture, Western Australia, Series 4

THE best way to grow dry season crops of safflower, linseed and rapeseed under irrigation in the Ord Valley is by sowing on to broad flat ridges, separated by small furrows 3 ft. 6 in. apart.

This system of sowing is called the "corrugation" method.

Orchard Planting Systems, K T. Whitely

Journal of the Department of Agriculture, Western Australia, Series 4

HAVING decided on the location of the orchard and the types of fruit trees to be planted, the grower is still faced with the problem of layout of the trees in the new orchard.

The Effects Of Tillage Implements On Cereal Yields, H M. Fisher

Journal of the Department of Agriculture, Western Australia, Series 4

Careful soil preparation is essential for cereal crops grown without fallow on clover ley land.

Crops give better yields where the land is broken up with a mouldboard or disc plough rather than a scarifier or similar machine.

The implements differ appreciably in their capacity to control weed growth and this is largely responsible for variations in cereal yields. "Takeall" disease is reduced by efficient weed control.

A Modified Copper Hot Water System, F J. Fielder

Journal of the Department of Agriculture, Western Australia, Series 4

A good supply of hot and boiling water for cleansing and sterilising utensils is essential for hygienic milk production.

Dairy Instructor F. Fielder, M.D.D., describes an efficient and economical modification of a copper hot water system for this purpose.

SINGLE copper units of 14 or 16 gallon capacity to supply hot and boiling water for the dairy are no longer good enough for most dairy farms.

Australian Tractor Tests : International A554d : Report On Test No. 36 (Farmers' Edition), G H. Vasey, W. F. Baillie

Journal of the Department of Agriculture, Western Australia, Series 4

THIS Report is taken from the full Technical Report No. 36; results are shown here in briefer form: fuller explanations are added.

Values quoted may be rounded out to two instead of three significant figures; to this extent the values may differ slightly but not significantly from those shown in the Technical Report.

Check Your Milking Machine, T Pavy

Journal of the Department of Agriculture, Western Australia, Series 4

MILKING machine efficiency testing carried out by officers of the Department of Agriculture's Dairying Division have shown that many machines are not up to standard.

One reason for this is that farmers do not check their machines regularly.

Water Cooling Towers : For Cooling Milk On The Dairy Farm, K Needham

Journal of the Department of Agriculture, Western Australia, Series 4

Experience on dairy farms where water cooling towers have been installed has shown that the quality and grading of milk and cream has been improved and maintained, particularly during the summer.

MOST defects in the quality of dairy produce can be attributed to the activity of micro-organisms which cause spoilage.

The Importance Of Rapid And Complete Milking, K Needham, W. G. Robinson

Journal of the Department of Agriculture, Western Australia, Series 4

COMPLETE withdrawal of milk from the udder as quickly as possible after the process of "let-down" has started, is an essential in good milking; management.