Ms.
Stephens has about 11 years of progressive experience and serves as President
and Principal Engineer for Stephens Associates’ structural consulting
services. Previously, she served as a
Structural Engineer with nationally recognized structural engineering and
architectural firms on the east and west coasts. Ms. Stephens has experience on a wide variety of structural
projects including evaluation and design of wood, steel, concrete and masonry
structures. She has evaluated damaged
buildings and designed the required repairs.
She also has extensive experience in seismic evaluation of existing
buildings and seismic retrofit design.
bahstephens@stephensengineers.com
M.Eng/Civil
(Structural) Engineering/Cornell University, Ithaca, New York/1990
BS/ Civil
Engineering/Cornell University, Ithaca, New York/1989
Professional
Engineer, Massachusetts (Civil & Structural, Vermont (Structural), New
Hampshire (Civil & Structural), Maine, and California
Associate
Member, American Society of Civil Engineers (ASCE)
Member,
Boston Society of Civil Engineers (BSCES)
Academic
Advisory Council, Cornell University School of Civil and Environmental
Engineering
http://www.cee.cornell.edu/council/bio.cfm?ID=35
Commercial and Industrial Buildings
Primary, Secondary and Higher Education Buildings
Christian Book Distributors, Peabody, Massachusetts. Analyzed existing 3-story steel office building for compliance with code requirements for existing buildings. Recommended strengthening steel braces, columns, and footings where necessary.
The Flatley Company, 2000 Crown Colony Drive, Quincy, Massachusetts. Calculated wind and earthquake loading on 6-story office building. Analyzed and designed steel moment frames to resist lateral forces along the longitudinal direction of the structure and concentric braced frames to resist lateral forces along the transverse direction. Analyzed panel zone web shear in moment connections to columns and designed doubler plates where necessary. Designed concrete shear walls to resist lateral loads at the first level of the building.
Cambridge Savings Bank, Cambridge, Massachusetts. Analyzed existing 3-story wood, steel and masonry structure. Designed retrofit of building by structurally separating historic unreinforced masonry portion from the wood and steel frame portion of the structure. Designed seismic retrofit for the unreinforced masonry consisting of a steel frame bolted to existing masonry. Also designed lateral load resisting system, including concentric and eccentric braced frames, concrete shear walls, collector beams, columns, base plates and anchor bolts, of renovated wood and steel frame structure.
Martignetti, Norwood,
Massachusetts. Calculated wind and earthquake loading on 250,000 SF steel
warehouse. Designed lateral force
resisting system consisting of steel braced frames.
One Wayside Road,
Burlington, Massachusetts. Calculated wind and earthquake loading on
4-story office building. Analyzed and
designed steel moment frames to resist lateral loads considering torsional
properties of the structure. Designed
base plates and anchor bolts for moment frame columns.
Talbots, Corte
Madera, California. Designed and
detailed 1100 SF mezzanine structure within existing retail building. Mezzanine design consisted of wood floor
framing with steel beams and girders at the perimeter, steel tube columns and
eccentrically braced steel frames.
200 Wheeler Road, Burlington, Massachusetts. Analyzed existing 6-story steel frame office building with a proposed addition for wind and earthquake loading. Recommended brace strengthening at weak points. Designed new steel braced frames for addition. Designed columns, base plates and anchor bolts at new braced frame locations.
Varian, Gloucester, Massachusetts. Calculated wind and earthquake loading on 3-story steel office building. Calculated distribution of lateral forces to braced frames considering torsional properties of the structure. Designed braced frames.
UNUM Life Insurance
Building HO-3, South Portland, ME. Calculated wind and earthquake loading on 4-story, 270,000 SF
office building. Performed preliminary
analysis and recommended number of braces to be built. Calculated distribution
of lateral forces to steel braced frames considering torsional properties of
the structure. Designed braced frames.
Griffin Brook Park, Building 401, Methuen, Massachusetts. Calculated dead, live, snow, wind and earthquake loads on the 1-story steel framed building. Selected deck, joists and joist girders for roof framing. Designed special framing for mechanical units at clean room area. Designed wind girts/brick shelves at perimeter of building to resist combined bending stresses and torsional shear. Designed braced frames to resist shear forces. Designed columns, base plates, anchor bolts and footings for calculated loads.
FSI International,
Chaska, Minnesota. Calculated wind
forces on 2- and 4-story additions to steel office building. Determined distribution of lateral forces to
braced frames considering torsional properties of the structure. Designed braced frames. Designed steel columns, base plates and
anchor bolts at braced frame locations.
IBM, Burlington,
Vermont. Designed light steel
horizontal grid frame for existing building to support clean room ceiling under
seismic loads
Massachusetts Electric Building, Southborough, Massachusetts. Evaluated existing 2-story steel office building for adequacy under current building codes. Designed retrofit, consisting of steel braced frames, to resist current code-prescribed lateral forces. Designed steel framing at new floor and roof openings and for new stairs.
Pacific Bell Building, Oakland, California. Performed dynamic analyses of existing 50-year old, 15-story building. Evaluated the concrete shear wall and steel moment frame lateral system for compliance with current building codes. Also performed a static non-linear push-over analysis of the structure. Designed retrofit for concrete shear wall in areas of overstress. Reviewed proposed upgrade to the structure.
TN Building, Portland, Oregon. Calculated lateral forces on curtain wall panels of existing 12-story building. Analyzed adequacy of existing curtain wall connection. Performed lateral analysis of this concrete shear wall building. Evaluated shear wall stresses for compliance with the building code in effect at the time of construction. Evaluated concrete columns for biaxial bending stresses due to eccentric loading.
Mentor Graphics, Seattle, Washington. Performed detailed computer analysis of a floor slab to predict cracking patterns and total deflections for specified concrete strengths and superimposed loads.
PRIMARY, SECONDARY AND HIGHER EDUCATION
BUILDINGS
Hobomock Elementary
School, Pembroke, Massachusetts. Calculated
wind and earthquake forces on 1- story steel school building. Calculated distribution of lateral forces to
braced frames. Designed braced frames. Designed steel columns, base plates and
anchor bolts at braced frame locations.
Sharon High School,
Sharon, Massachusetts. Analyzed
existing 1-story unreinforced masonry structure under lateral loading. Designed new steel bracing as seismic
retrofit to meet current codes.
Salisbury Elementary
School, Salisbury, Massachusetts.
Calculated wind and earthquake forces on 1- and 2-story areas of steel
school building. Calculated
distribution of lateral forces to braced frames considering torsional
properties of the structure. Designed
braced frames. Designed steel columns,
base plates and anchor bolts at braced frame locations. Designed concrete footings.
Lynn Classical High School, Lynn, Massachusetts. Calculated dead, snow and snow drifting loads on the 1-story portion of the steel framed building. Designed joists and girders for roof framing. Performed lateral analysis of both the 1-story and 3-story portions of the structure and designed braced frames to resist direct and torsional shear forces. Calculated loads on columns and pile foundations. Sized the steel columns accounting for biaxial bending. Designed pile sizes and pile groups.
Medway Elementary School, Medway, Massachusetts. Calculated dead, live, snow, wind and earthquake loads on 1-story portion of the steel framed building. Designed joists and girders for roof framing. Performed lateral analysis of the structure. Designed braced frames to resist shear forces. Designed columns, base plates and anchor bolts.
Norton Middle School,
Norton, Massachusetts. Calculated
wind and earthquake loading on 3-story structure. Designed steel braced frame lateral load resisting system for
structure.
Mashpee High School, Mashpee, Massachusetts. Calculated dead, live, snow, wind and earthquake loads on the 3-story steel frame building. Designed joists and girders for roof and floor framing. Analyzed the lateral resistance of the structure and designed braced frames to resist direct and torsional shear forces. Sized columns and footings for calculated loads. Supervised detailing and drafting of project.
Stanford University
Buildings, Stanford, California.
Analyzed several concrete and masonry buildings damaged in the Loma
Prieta Earthquake. Evaluated repair and
retrofit deigns.
Logan 2000 Terminal B Elevated Walkways, East Boston, Massachusetts. Designed tension connections between steel H-piles and concrete pile caps.
LA County Hall of Administration, Los Angeles, California. Visually surveyed shear walls at lower levels of 5-story concrete building. Mapped locations and sizes of cracks. Supervised collection of concrete cores for laboratory testing.
Golden Gate Bridge, San Francisco, California. Assisted in condition assessment of the existing concrete of the north pier and cable housing of the bridge. Visually surveyed and rebound hammer tested the pier and cable housing.
LA County Dept. of
Health Services Building, Los Angeles, California. Visually surveyed floor slabs and precast
wall panels in a 9-story concrete building damaged by fire. Performed non-destructive testing, by
sounding and using a Schmidt Hammer, of areas of suspected damage. Supervised collection of concrete cores for
laboratory testing.
City of Oakland,
Oakland, California. Evaluated
condition of and analyzed lateral capacity of various masonry, concrete and
steel buildings damaged in the Loma Prieta Earthquake. Performed peer reviews of repair and
retrofit designs.
TM 5-809-10, Seismic
Design for Buildings. Assisted
primary author in revision of this United States Army Manual. Re-worked design examples to reflect code
changes.
Cathedral Hill
Condominiums, San Francisco, California.
Evaluated the structural design of 3-story wood frame condominium
structures. Verify as-built conditions
in the field. Designed and detailed the
retrofit of the lateral load resisting system for areas found to be
inadequately designed or constructed.
Olympian Hills,
Hercules, California. Evaluated the
structural design of the 2-story wood frame condominium structures. Designed the retrofit of the lateral load
resisting system of areas determined to be inadequately designed or
constructed. Provided on-site consultation
during construction of the retrofit.
Executive Terrace,
Los Angeles, California. Evaluated
the structural design of the 4-story wood frame over concrete masonry
condominium structure. Designed repairs
for areas found to be inadequate to resist lateral loads prescribed in the
building code in effect at the time of construction.
Pars Plaza, Long
Beach, California. Evaluated the
structural design of the 4-story wood frame over concrete masonry condominium
structure. Designed repairs for areas
found to be inadequate to resist lateral loads prescribed in the building code
in effect at the time of construction.
Village in the Park,
South San Francisco, California. Analyzed
2- and 3-story wood frame condominium structures under wind and earthquake
loading. Performed field investigation
to verify as-built condition of shear resisting elements. Designed necessary structural repairs.