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A small, tubular-steel and chain wire gate to the west of the station opens to a drained, concrete path continuous about the west, north and east of the station. A battered bank rises up on each side of the concrete path to the level of the park behind. Concrete vehicle tracks from Ipswich Road gateway finish at the rear of the station.
With lightweight aluminium gates, meeting these force limitation guidelines becomes much more achievable, as they require less force to open and close compared to heavier materials such as wrought iron or steel. Another advantage of aluminium gates is their compatibility with brushless motor operators.
By 1963, a new structural system of framed tubes had appeared in skyscraper design and construction. Fazlur Rahman Khan, a structural engineer from Bangladesh (then called East Pakistan) who worked at Skidmore, Owings & Merrill, defined the framed tube structure as "a three dimensional space structure composed of three, four, or possibly more frames, braced frames, or shear walls, joined at or ...
In the recent past, HSS was commonly available in mild steel, such as A500 grade B. Today, HSS is commonly available in mild steel, A500 grade C. Other steel grades available for HSS are A847 (weathering steel), A1065 (large sections up to 50 inch sq made with SAW process), and recently approved A1085 (higher strength, tighter tolerances than ...
The central "web" of the steel I-beam is often wider than a column web to resist the higher bending moments that occur in beams. Wide sheets of steel deck can be used to cover the top of the steel frame as a "form" or corrugated mold, below a thick layer of concrete and steel reinforcing bars. Another popular alternative is a floor of precast ...
FRC poles are hollow and similar to the tubular steel poles, with a typical wall thickness of 1 ⁄ 4 to 1 ⁄ 2 in (6 to 13 mm) with an outer polyurethane coating that is ~0.002 in (0.05 mm) thin. As with all the other non-wood poles, FRC poles cannot be mounted with the traditional climbing hardware of hooks and gaffs.
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