Predetermining the ultimate capacity of piles driven into purely
cohesive soils and purely cohesionless soils involves, respectively,
the consideration of soil shear strength in a completely undrained and
a completely drained condition. For the intermediate cases concerning
soils that possess both cohesion and internal friction (silts, clayey
silts, sandy clays,...
This paper presents a method of predicting penetration
resistance for driven piles, using known driving records for driving
the same type piling in similar subsurface conditions. As known
driving records are not always available to the analyst, a method was
also investigated using soil data only. The analytical tools employed...
The author and compiler of Design Data for Field Engineers has
included in his volume short cuts in design, and miscellaneous data
and information used on general civil engineering projects from inception
to completion.
The book is intended for the engineer who may be stationed in
isolated areas and who...
Geotextiles are experiencing increased use in arctic and subarctic
construction in separation, reinforcement, erosion control, and
drainage applications. The use of geotextiles as capillary cutoff
layers to prevent frost heave has been proposed as well.
In recognition of the need to investigate properties of geotextiles
in cold regions applications, a...
This publication is the second in a series of circulars designed to assist the graduate engineer in reviewing engineering subject matter in order to prepare for registration examinations. As in the first publication of the series, most of the illustrative problems are taken from recent examinations of the Oregon State...
In many undergraduate engineering programs, students do not synthesize content learned from multiple courses until a capstone senior design course. As an example, in undergraduate civil engineering programs, transportation engineering concepts (e.g., geometric alignment, asphalt design procedures) and geotechnical engineering concepts (e.g., shear strength of soils, soil compaction) are not...
Pile caps are structural elements used to transmit loads from structural columns into pile groups. A pile cap is generally constructed of reinforced concrete and contains only minimal flexural reinforcing steel. Using modern design methods, the anchorage of the flexural steel may limit the design capacity of existing pile caps....
The structural behavior of pile groups (dolphins) is analyzed
considering two types of boundary conditions. First the individual
piles of the group are assumed to be rigidly embedded in the soil. In
the second analysis the more realistic case is considered where the
soil foundation is allowed to yield. The...
Efficient use of water in agricultural production involves accurate assessment
and control of the quantity and spatial uniformity of excess percolation. Passive
Capillary Samplers (PCAPS), which sample water from the vadose zone have shown
potential to provide superior estimates of soil water flux compared to alternative
methods. In a four-year...