CAST lab supports hands-on research-creation

January 1, 1970  |  News

By Mark West The Centre for Architectural Structures and Technology is an architectural research lab at the University of Manitoba that seeks new boundaries for architectural thought, design, and building technology through physical explorations of materials, tools, and methods; the study of natural…
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Estimating wind loads on banners

January 1, 1970  |  News

Wind loads on banners can be estimated and a simple example is shown below. A 90 mph, (40m/s) three second gust has a basic wind pressure of 15 psf (720 pascal or 0.72kN/m2). Codes adjust this with a coefficient of pressure and for a square fabric sign is a minimum of Cp = 1.45. For … <div><a…
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Defining green roof lingo

January 1, 1970  |  News

Green roofs succeed when they achieve the ideal balance of weight, water infiltration and soil balance to sustain desired plantings. Here are some key performance areas for soils and green roofs that JBC applies in the design process: Infiltration rate: The amount of permeability in the soil. The hi…
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Tips for incorporating green walls/roofs in the design process

January 1, 1970  |  News

Think of green walls/roofs as integral to the building Jeff Bruce says that the biggest message for architects and builders is that green roofs and walls are not an applique that can be added at the end of the design process. Instead, think of them as integral to the program and to overall life cycl…
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Green roof and wall system types

January 1, 1970  |  News

The following roof systems offer different advantages and cost levels. Modular: A green roof with drainage layers, filter cloth, growing media and plants already prepared in movable, interlocking grids. Loose laid: Same as modular, but the grids are not necessarily interlocking. Built-up: A green ro…
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Aquaquest living wall technical data

January 1, 1970  |  News

Source: Randy Sharp, Sharp & Diamond Landscape Architecture Inc. Living walls can be designed and planted for color and variety throughout the year. In the spring at Aquaquest’s wall, the wintergreen and evergreen huckleberries flower with white blossoms that stand out against the bright g…
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Connection details

January 1, 1970  |  News

When forces converge within a tension structure, the connections between each of the three systems —fabric membrane, supporting structure and tensioned cables— are critical to a successful design. The conditions of transferring loads from one of these systems to another can be grouped in…
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Print production specifications

January 1, 1970  |  News

Click on the image on right to enlarge. General information The Industrial Fabrics Association International (IFAI) provides these specifications to ensure quality standards in advertisement print reproduction and the integration of digital content into our publications. IFAI publications are printe…
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Lag screw formulas

January 1, 1970  |  News

The following formula is an example of the type used to determine the maximum allowable withdrawal loading on the wood when using a lag screw: p = 1800 D0.75 G1.5 Here p is the allowable load, in pounds per inch of embedment of the threaded portion of the screw. D is the shank diameter, in … …
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Approximate allowable max. tensile load in threaded fasteners loaded in tension and shear

January 1, 1970  |  News

This table shows the approximate allowable max. tensile load in threaded fasteners loaded in tension and shear. Notes: Above allowable tensile loads are based on Ft=26-1.8fv≤20, where Ft is the allowable tensile stress, fv is the actual shear stress. Fu, the ultimate strength of the fastener, …
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