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Non-Uniformly Compressed Stiffened Elements, Venkatakrishnan Kalyanaraman, P. Ramakrishna
Non-Uniformly Compressed Stiffened Elements, Venkatakrishnan Kalyanaraman, P. Ramakrishna
CCFSS Proceedings of International Specialty Conference on Cold-Formed Steel Structures (1971 - 2018)
No abstract provided.
Buckling Of Plates Containing Openings, Fong-Yen Chow, Rangachari Narayanan
Buckling Of Plates Containing Openings, Fong-Yen Chow, Rangachari Narayanan
CCFSS Proceedings of International Specialty Conference on Cold-Formed Steel Structures (1971 - 2018)
No abstract provided.
Earthquake Resistance Of Light-Gauge Steel Frames, Testuro Ono
Earthquake Resistance Of Light-Gauge Steel Frames, Testuro Ono
CCFSS Proceedings of International Specialty Conference on Cold-Formed Steel Structures (1971 - 2018)
No abstract provided.
Simplified Design Approach For Laterally Braced Purlins Subjected To Wind Uplift, Roger A. Laboube
Simplified Design Approach For Laterally Braced Purlins Subjected To Wind Uplift, Roger A. Laboube
CCFSS Proceedings of International Specialty Conference on Cold-Formed Steel Structures (1971 - 2018)
No abstract provided.
Load And Resistance Factor Design Of Cold-Formed Steel Structural Members, Theodore V. Galambos, Wei-Wen Yu
Load And Resistance Factor Design Of Cold-Formed Steel Structural Members, Theodore V. Galambos, Wei-Wen Yu
CCFSS Proceedings of International Specialty Conference on Cold-Formed Steel Structures (1971 - 2018)
No abstract provided.
Comparative Study Of Load And Resistance Factor Design Vs. Allowable Stress Design, Brian K. Snyder, Lan-Cheng Pan, Wei-Wen Yu
Comparative Study Of Load And Resistance Factor Design Vs. Allowable Stress Design, Brian K. Snyder, Lan-Cheng Pan, Wei-Wen Yu
CCFSS Proceedings of International Specialty Conference on Cold-Formed Steel Structures (1971 - 2018)
No abstract provided.
Strength Of Biaxially Compressed Perforated Plates, Rangachari Narayanan, Fong-Yen Chow
Strength Of Biaxially Compressed Perforated Plates, Rangachari Narayanan, Fong-Yen Chow
CCFSS Proceedings of International Specialty Conference on Cold-Formed Steel Structures (1971 - 2018)
No abstract provided.
Shear-Bond Strength Of Studded Steel Deck Slabs, Max L. Porter, Lowell F. Greimann
Shear-Bond Strength Of Studded Steel Deck Slabs, Max L. Porter, Lowell F. Greimann
CCFSS Proceedings of International Specialty Conference on Cold-Formed Steel Structures (1971 - 2018)
No abstract provided.
European Recommendations For Mechanical Connections In Thin-Walled Structural Steel Elements, A. W. Toma
European Recommendations For Mechanical Connections In Thin-Walled Structural Steel Elements, A. W. Toma
CCFSS Proceedings of International Specialty Conference on Cold-Formed Steel Structures (1971 - 2018)
No abstract provided.
First International Conference On Case Histories In Geotechnical Engineering, Multiple Authors
First International Conference On Case Histories In Geotechnical Engineering, Multiple Authors
International Conference on Case Histories in Geotechnical Engineering
No abstract provided.
Performance Of Diaphragm Walls In Deep Foundation Excavations, Z. C. Moh, T. F. Song
Performance Of Diaphragm Walls In Deep Foundation Excavations, Z. C. Moh, T. F. Song
International Conference on Case Histories in Geotechnical Engineering
Two case studies of using diaphragm wall as earth retaining structure for deep excavation are reported. Case A concerns excavation down to a depth of 14.7 min alternate layers of soft silty clay and silty sand. Diaphragm walls of 70 m thick and 22 m deep were installed into a dense silty sand stratum. In Case B, diaphragm walls of 60 m thick were constructed in very soft clayey soil without penetration into any firm stratum. In both cases, instrumentations including piezometers, inclinometers, earth pressure cells, reinforcing bar transducers, heave stakes, settlement points and strut strain gauges were installed and …
Performance Of Preload On Cohesionless Soils, A. F. Youssef, O. Erol
Performance Of Preload On Cohesionless Soils, A. F. Youssef, O. Erol
International Conference on Case Histories in Geotechnical Engineering
Common occurrence of loose normally consolidated fine sands and silts extending to considerable depths necessitates the utilization of ground improvement techniques along the coasts of Arabian Peninsula. In the case considered, the soil profile consisted of twenty meter thick compressible sands, and preloading technique was suggested to stabilize the foundation soil. The paper presents the performance of the preloading and the level of soil improvement achieved. The observed settlements and settlement-time behaviour are compared with the values estimated from various methods. The soil parameters back calculated from measured field behaviour are reported.
Time Dependent Limit Stability Of Tunnel And Dam Engineering In Difficult Rocks, Tan Tjong Kie
Time Dependent Limit Stability Of Tunnel And Dam Engineering In Difficult Rocks, Tan Tjong Kie
International Conference on Case Histories in Geotechnical Engineering
Some representative case histories of the damage of tunnels and galleries in weak fissured swelling rock formations with low competency ratios are described; a rheological analysis and suggestions for the design are presented. The basic ideas underlying the design and construction of the Ghe Zou Ba dam, founded on horizontal layers of sand-and mudstones interbedded by thin clay sheets are reported. In all such cases the time factor is important.
Twenty-Year Performance Of Soil-Cement Dam Facings, T. J. Casias, A. K. Howard
Twenty-Year Performance Of Soil-Cement Dam Facings, T. J. Casias, A. K. Howard
International Conference on Case Histories in Geotechnical Engineering
The soil-cement slope protection on three Bureau of Reclamation projects has been damaged enough to require repair. They were the first three Bureau embankments to utilize soil-cement in place of riprap and have been in service about 18 to 20 years. The soil-cement facings on other Bureau dams are in excellent condition. The lack of bond between the soil-cement lifts in combination with severe weather and wave action appear to be the main factors contributing to the damage. Laboratory tests and field test sections indicate that cement applied between the soil-cement lifts may be a practical solution to prevent damage …
Unplanned Construction Of A 210 Ft High Temple, Gopal Ranjan, Shamsher Prakash
Unplanned Construction Of A 210 Ft High Temple, Gopal Ranjan, Shamsher Prakash
International Conference on Case Histories in Geotechnical Engineering
A 210′ high temple site was located on a hillock made up of filled up soil. Taking the advantage of site topography terraced construction consisting of the main temple in the centre and rooms on the three sides were planned. The construction progressed without any soil investigations. The paper highlights the problems faced at the stage when the construction had already progressed up to +50 ft. Soil investigations were carried out at this stage. Then, the performance of structures was predicted and possible modifications in the future construction are presented.
Uranium Mill Trailings Geotechnical Investigations - A Case History, V. Singh, J.P. Berry, D.F. Kapral
Uranium Mill Trailings Geotechnical Investigations - A Case History, V. Singh, J.P. Berry, D.F. Kapral
International Conference on Case Histories in Geotechnical Engineering
Uranium mill tailings at Union Carbide Corporation's mining and mill complex at Uravan, Colorado, are deposited in two tailings piles along a steep hillside. The tailings are deposited in slurry form, allowed to decant, and the decant liquid removed for recycling in the milling operation. The impoundment dikes are raised using the coarser portion of the tailings in an upstream method of construction. At the time of the study, the height of the tailings piles was in excess of 100 feet. Continued use of these piles necessitated a detailed geotechnical stability evaluation and design of stabilizing measures in order to …
Conference Committees, Multiple Members
Conference Committees, Multiple Members
International Conference on Case Histories in Geotechnical Engineering
No abstract provided.
Bearing Capacity Of Piles Under Long-Term Vibration, Xu You Zai, Liu Yao Fu, Shi Yul Iang, Xin Su Lan
Bearing Capacity Of Piles Under Long-Term Vibration, Xu You Zai, Liu Yao Fu, Shi Yul Iang, Xin Su Lan
International Conference on Case Histories in Geotechnical Engineering
The Bearing capacity of piles under long-term vibration is herein discussed. A real case of continuous subsidence of vibrating pile foundations is presented with a set of vibratory loading tests in-situ and the characteristics of settlement-time curves are described. Analyses of the observed data are made and the additional plastic deformation induced in the soil strata under the piles is interpreted. Based on the test data, authors recommend a conception of long-term bearing capacity of piles to be used in the design of pile foundation under vibration instead of the conventional one, and a method of determination of bearing capacity …
Design Considerations And Long-Term Performance Of A Building Foundation In Clay, G. E. Bauer
Design Considerations And Long-Term Performance Of A Building Foundation In Clay, G. E. Bauer
International Conference on Case Histories in Geotechnical Engineering
Based on the results of a full-scale footing tests, spread footings were used instead of end-bearing piles to support a four storey building extension. Five proto-type footings were instrumented and the settlement behaviour was monitored over 13 years. Special construction procedures had to be employed to achieve compatible differential settlements between the individual footings and the adjacent existing building.
Excessive Settlement In Buildings, A. Verghese Chummar
Excessive Settlement In Buildings, A. Verghese Chummar
International Conference on Case Histories in Geotechnical Engineering
The paper deals with three case studies where the foundations of buildings in the coastal areas of South India settled from 10 to 100 Cms resulting in excessive tilt or cracks in the superstructure. Details of soil exploration work carried out, description of the soil characteristics and the analysis of the causes of settlement are dealt with in this paper. The remedial measures suggested for the possible rectification of the damages are also presented.
Failure Of The Ghana Law School Building In Accra, Ghana, N. K. Kumapley, S. Ramachandra
Failure Of The Ghana Law School Building In Accra, Ghana, N. K. Kumapley, S. Ramachandra
International Conference on Case Histories in Geotechnical Engineering
The immediate post-independence era in Ghana, namely the late 1950's to early 1960's, was characterised by extensive physical and infrastructural development, for most of which proper design and construction records were either not kept or were lost. This has often led to difficulties when remedial measures have to be designed for some of these structures which have failed after only a few years in service. The paper describes attempts to diagnose the cause(s) of failure and to design remedial measures for one such structure in the absence of original construction records.
Foundation Design And Construction For A Large Mill Complex, C. R. I. Clayton, J. Milititsky, L. J. L. Carvalho
Foundation Design And Construction For A Large Mill Complex, C. R. I. Clayton, J. Milititsky, L. J. L. Carvalho
International Conference on Case Histories in Geotechnical Engineering
Very little good field data exists concerning the performance of heavily loaded end-bearing piles on thin layers of weak rock. The problems associated with the foundations for silos are often severe, since loads are normally heavy, and allowable differential settlements are often very small. The paper describes just such problems, associated with the construction of a flour mill complex, where the principal problems were associated with the uncertainties of pile performance. On the basis of the uniaxial unconfined compressive strength of the supporting rock the end-bearing piles supporting silos within the mill appeared to be overloaded. A programme of slow …
Foundation Performance Of Very Old Structures, S. C. Handa
Foundation Performance Of Very Old Structures, S. C. Handa
International Conference on Case Histories in Geotechnical Engineering
Withstanding the agents of destruction for several centuries, some of the structures in this world, exist as a testimony to the sound and perfected techniques of construction used in years that belong to the bygone past. Among the most famous are Taj Mahal and Qutb Minar, still standing in a magnificent and sound condition. One of the wonders of the world, Taj Mahal though built in seventeenth century still looks so fresh that the super-structure performance also speaks of the adequate and perfect foundation that must have been built for it. This paper deals with subsoil conditions at site, the …
Negative Friction And Lateral Loading On Piles, E. E. De Beer, M. Wallays, E. Goelen
Negative Friction And Lateral Loading On Piles, E. E. De Beer, M. Wallays, E. Goelen
International Conference on Case Histories in Geotechnical Engineering
An example is first given of a structure founded on piles and having suffered damages caused by negative friction and passive lateral loading on the supporting piles. It appears that the effects of negative friction are in general less disastrous than should be expected from a simplified theoretical approach. The described case shows that, at the contrary, the passive lateral loadings, when not accounted for, become rapidly detrimental. Both influences are time delayed, with the consequence that the critical situation does mostly not occur during construction, but a certain time after completion. The design of a second structure, in which …
Performance Of Large Diameter Oil Storage Tanks, I. K. Ozaydin, S. Y. K. Inan
Performance Of Large Diameter Oil Storage Tanks, I. K. Ozaydin, S. Y. K. Inan
International Conference on Case Histories in Geotechnical Engineering
The performance of very large diameter petroleum storage tanks erected at Ipras Refinery in Turkey are presented. The findings and predictions of the geotechnical investigation carried out before the construction are summarized together with the observed behavior during the water load tests. The results of a post-construction investigation performed to evaluate the observed behavior, and comparisons between the predicted, observed and back-calculated behaviors are presented and discrepancies encountered are discussed.
Philip Morris Corporate Headquarters Building, A. J. Ciancia, H. M. Horn
Philip Morris Corporate Headquarters Building, A. J. Ciancia, H. M. Horn
International Conference on Case Histories in Geotechnical Engineering
The temporary support of three city streets, a subway tunnel, and a high-rise office tower during the construction of the Philip Morris Corporate Headquarters Building is discussed. The results of an extensive field exploration program, consisting of test borings, probes, and geologic mapping were evaluated for the design of temporary support systems; i.e., rock anchors and rakers. Borehole extensometers and conventional optical survey techniques were successfully used to monitor movements of the adjacent structures during demolition operations of a building that occupied the site. Minimal movements were measured during demolition. At the northeast corner of the site, six heavily loaded …
Recovering Differential Settlements By Vertical Drains, C. Mastrantuono, A. Tomiolo, E. Arcangeli
Recovering Differential Settlements By Vertical Drains, C. Mastrantuono, A. Tomiolo, E. Arcangeli
International Conference on Case Histories in Geotechnical Engineering
The differential settlement recovering of a large six storeys building by means of overloading and vertical drains is described. The results are discussed in relation with the geotechnical characteristics of the soil and by numerical analyses of the settlement curves.
Settlement Observations On Two Mat Foundations, E. Winter, P. Chung
Settlement Observations On Two Mat Foundations, E. Winter, P. Chung
International Conference on Case Histories in Geotechnical Engineering
The performance of two mat foundations is examined. The first case history includes a mat founded over generally granular terrace soils, underlain by a deep clay layer of medium compressibility. The second case history includes a mat over stiff preconsolidated clay. The mats are analyzed based on laboratory test and field pressuremeter data using the Winkler method. The particular approach taken in the analysis includes the determination of the modulus of subgrade reaction for the design using Vesic's method. Vesic (1968). This calculation was developed for pavements but is based on the theory of plates on elastic media which applies …
Settlement Of A Building Founded On Difficult Soil, Iqbal H. Khan, Fathi M. Layas
Settlement Of A Building Founded On Difficult Soil, Iqbal H. Khan, Fathi M. Layas
International Conference on Case Histories in Geotechnical Engineering
Many coastal areas in Benghazi have been reclaimed from lagoons. Quite often such areas are covered by debris, rubbish and other artificial fills over many years. The proximity of these deposits to the Mediterranean Sea coupled with the seasonal moisture variations has resulted in the formation of the so-called Sabkha soils having a high proportion of chemical content. Settlement records of a four storey building founded on sabkha soil are prescuted for seven years. The building underwent large settlement resulting in a tilt from the vertical. It is found that, for Sabkha soils, the measured settlement is larger than that …
Settlement Of A One Floor Building On Soft Clay Beside A Heavy Building, Mohamed A. El-Sohby, Ossama Mazen
Settlement Of A One Floor Building On Soft Clay Beside A Heavy Building, Mohamed A. El-Sohby, Ossama Mazen
International Conference on Case Histories in Geotechnical Engineering
A one floor building was founded on a deposit of normally consolidated soft clay. It was constructed to annex an existing three storey high building founded on piles. After construction, tilting and settlements of the Annexe were detected relative to the existing building. Recorded absolute and differential settlements, monitored over a period of five years, were considerably high. It is shown here that this could be caused by the combined effect of high compressibility, confinement of clay layers and variations in pressure distribution below foundations.