Construction Materials & Methods

Having provided 43 years of service, the Ice Arena at Bowling Green State University is a popular venue on campus that serves the BGSU students and faculty as well as the local municipal community. Currently operated by The Department of Recreation and Wellness, the Ice Arena was originally designed in 1965 and contains the main ice sheet, sized at 200’ X 85’. It also houses a studio ice sheet that is 80’ X 40’ and a curling ice sheet at 150’ X 57’, as well as a lounge and other supporting facilities.

The Caterpillar 938H

Caterpillar presents a new H-Series Medium Wheel Loader 938H available with enhanced performance, greater versatility, ease of service checks and an engine that is built to be better for the environment. An overview of the specific upgrades include: a new axle system, a larger holding capacity bucket, easier access for regular maintenance checks, an innovative engine that passes US EPA Tier III emissions standards from the 1990 Clean Air Act, better functionality for the operator, a larger variety of working tools available, provisions to keep the engine free of clogging debris, ergonomic improvements for the operator’s seat and gears, and increased power controls for the operator.

Weathering steel, more commonly referred to by the U.S. Steel tradename Cor-Ten™, is a group of steel alloys that develop a stable oxidation requiring no additional coating. Upon exposure to normal environmental stresses, it acquires a dense, dark brown colored barrier layer that protects it from further oxidation.

Many people like the natural appearance and simple maintenance that weathering steel fabrications provide. In addition to being used in structural framing, roofing and siding panels, weathering steel is often used for decorative fabrications, including signage and sculptures.

There are two different ways to harness the power of solar energy: active solar systems and passive solar systems. Solar panels and other solar energy collectors are considered active systems. Generally, their purpose is to collect, store and distribute solar energy to heat water or air inside a building. The term ‘passive solar’ refers to the process of constructing and orienting a building to take advantage of sunlight as a source of light and heat without the use of solar equipment. The goal, aside from the healthy benefits of natural light, is to reduce overall dependence upon mechanical systems.

Planning and Best Practices

The light gauge metal stud framing phase of a project significantly impacts several other trades. It is no secret that good planning and practices will achieve higher production rates and a level of quality that meets the project's specifications. Planning and layout should be the responsibility of the project foreman; however, everyone should be involved with preparing the work flow. While actual layout is underway, other production items should also be thought through.

Today’s modern mid rise and high rise luxury condominiums and apartment buildings offer numerous amenities to attract potential owners. They can offer spectacular vistas through floor to ceiling walls of glass, high end finishes on the floor, gourmet style kitchens with all the modern features one could ever want, and a master bedroom suite that offers a tranquil and quiet place to escape. In these building types, elevators become a necessary component for vertical circulation to access the floors. For those residences that are adjacent to the elevator equipment room or the elevator hoistway, the noise and vibration caused by the operation of the elevator can be a potential source of sound intrusion. Because today’s buildings are constructed with lightweight materials, and because there is a need to generate maximum useable square footage, sound transmission issues are compounded. All this combined can result in unsatisfactory living conditions for tens of thousands who live in condominiums or apartments.

There are many things an exterior wall should do.  Among the most significant performance requirements is environmental separation; "it needs to keep the outside out and the inside in," according to Joseph Lstiburek, Ph.D., P.Eng. It also must be safe and structurally sound, and it has to look good. Structural engineers do a good job of keeping structures from falling down.  Building codes do a good job of ensuring that buildings are safe.  Architects do a good job of making buildings look good.  Where we most often fail is in the environmental separation.