Duffield Associates

read moreWithout water, there is no life on earth. Ancient civilizations conquered water problems with massive projects for drainage, water supply, irrigation and wastes. Thousands of years later modern civilization is still trying to solve those same problems. It can be argued that our water resource engineering, stormwater, and flood mitigation problems are even bigger - as the world's population growth increases so does the stress on our water supplies. Water quality is vitally important in today's world as every drop of water is being recycled continuously.

read moreEnvironmental engineering and science is a broad discipline. Our professionals use the principles of engineering, geology, soil science, biology, and chemistry to develop solutions to address the diverse and complex challenges faced by our communities during our environmental engineering projects in PA, MD, NJ, & DE. Through prevention, planning, and response, our environmental engineering design and testing activities are designed to protect human health and the environment. Preventative measures may be water and air pollution control, while our planning efforts seek a sustainable future as we consider climate impacts.

read moreHonoring the spirit of the great Karl Terzahgi. Geotechnical engineering is a relatively new field, only formalized into a discrete engineering discipline over the last 80 years. The Duffield geotechnical engineering firm, serving PA, MD, NJ, & DE, is proud to be part of that evolution with the first large scale geosynthetic installations in the USA; involving innovative reuse of materials, challenging foundation designs, earthworks, and soil/structure work.

read moreDuffield's civil engineers, designers, and construction experts bring diverse experience and far reaching skill sets to all our projects across PA, MD, NJ & DE. Civil engineering takes its roots from the empirical designs of the great builders for all civil works projects intended for the benefit of people and community. The term is broad reaching and contemporarily refers to site and land planning & development, utilities design, roads, bridges, and other infrastructure. As a general service, our civil engineering projects in PA, MD, NJ, & DE rely on many other design and construction sub-disciplines, which Duffield also provides in-house.

read moreWe're a team that provides a diverse range of engineering solutions on a person-to-person level. At about 100 employees, our size allows us to have experts from many disciplines who know each other on a personal level. It's an increasingly rare trait, and something we're extremely proud of. To encourage this type of collaboration, Duffield provides many regular opportunities for staff to truly get acquainted outside our walls so that it's easier to for them to collaborate across disciplines when working together on projects which ultimately benefits our clients.

read moreStructural engineering goes way beyond building design. It can involve specialty foundations, retaining walls and various structures. Our structural engineering company serves PA, MD, NJ, & DE, specializing in unique structural applications using steel, concrete, masonry, timber and geosynthetics. Many of these structural engineering projects involve a complex interaction with soil, water, and engineered materials.