Air-Stabilized Structures
A true membrane is able to withstand tension but is completely unable to resist bending. Although it is highly efficient structurally, […]
Sociological changes, new technology in industry and commerce, new building codes, other new laws and regulations, inflationary economies of nations, and advances in building technology place an ever-increasing burden on building designers
and constructors. They need more and more knowledge and skill to cope with the demands placed on them.
The public continually demands more complex buildings than in the past. They must serve more purposes, last longer, and require less maintenance and repair. As in the past, they must look attractive. Yet, both building construction and operating
costs must be kept within acceptable limits or new construction will cease.
To meet this challenge successfully, continual improvements in building design and construction must be made. Building designers and constructors should be alert to these advances and learn how to apply them skillfully.
One advance of note to building design is the adaptation of operations research, or systems design, developed around the middle of the twentieth century and originally
applied with noteworthy results to design of machines and electronic equipment.
In the past, design of a new building was mainly an imitation of the design of an existing building. Innovations were often developed fortuitously and by intuition and were rare occurrences. In contrast, systems design encourages innovation.
It is a precise procedure that guides creativity toward the best decisions. As a result, it can play a significant role in meeting the challenges posed by increasing building complexity and costs. The basic principles of systems design are presented
in this section.
A true membrane is able to withstand tension but is completely unable to resist bending. Although it is highly efficient structurally, […]
In determining stresses in masonry, effects of loads should be computed on actual dimensions, not nominal. Except for engineered masonry, the
The air-distribution system is the critical part of an air-conditioning system. If insufficient air is circulated, proper cooling cannot be done.
Lintels supported on the steel frame (sometimes called shelf angles) may be permanently fastened in the shop to the supporting spandrel
Nominal design values for laterally loaded fasteners Z, withdrawal of fasteners W, load parallel to grain P, and load perpendicular to
Developing proficiency in the proper design and specification of fire sprinkler systems is extremely tedious. While sprinkler system design is admittedly
Only material conforming to specifications for normal-weight aggregate (ASTM C33) or lightweight aggregate for structural concrete (ASTM C330) is accepted
Design values obtained by the methods described in Art. 10.3 should be multiplied by adjustment factors based on conditions of use,
The ACI 318 Building Code requires prior approval by the engineer of admixtures to be used in concrete. Air Entrainment. Air-entraining