ICF Construction with Hambro Floor System

Hambro D-500 Steel composite floor joist system is an advanced up-to-date answer to elevated floor construction challenges. Combining steel joists with poured concrete, the system consists of hybrid concrete/steel T-beams running in one direction and an integrated continuous slab in the other. The bottom chord acts as a tension member in the concreting stage and during the service life of the floor. The web system tying top and bottom chords together consists of bent rods and resists vertical shear in a conventional truss manner. The patented 13 gauge top chord acts as a compression member during the non-composite stage. In the composite stage, the top chord is embedded in the concrete and functions as a continuous shear connector. The concrete slab is reinforced with welded wire mesh. The top chord functions as a high chair, developing negative moment capacity in the concrete slab which behaves as a continuous one-way reinforced slab.

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Concrete Beams & Beam System Part 2 of 3

Revit Structure 2012 Training Video series. Sorry for the lack of clarity. These videos are for in-house training at my firm Forell/Elsesser Engineers located in San Francisco CA. Some videos I have more preparation than others. Still I hope this was helpful. Comment or thumbs up if you want more. Thanks!

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Concepts In Construction - System Building

This can also be termed as modular building. This refers to a form of building whereby a similar form of construction is adopted, usually by creating standard sizes of elements, thus remaining with the task of just creating multiples of the said modular element. The following are common elements adopted for this form of construction.

· Formwork: this refers to the mould into which concrete is poured and cured to provide the desired size and shape. Formwork can either be made of wood, steel, aluminium or PVC among other such items. In system building, a standard size of formwork is adopted, thus requiring similar sizes and forms of concrete elements in construction. This is especially easily achieve for elements like soffit formwork and beam and column formwork. Formwork props are also easily standardized to some extent where floor heights are more or less similar.

· Doors and windows: standard openings will call for standard windows, thus making it easy as well as consistent the process of their construction.

· Wall panels: For prefabricated buildings, it is usually easier to have a similar design for many units.

System building ensures similarity or near similarity of construction work, whether in small projects or big ones. This similarity leads to repetitive work, which gives the following benefits;

· Economies of scale: Due to the repetitive nature of the work at hand, there arises economies of large scale production.

· Economies in operation: due to the benefit of doing the same thing over and over again, it becomes easier to follow and even make more per unit time.

· Enhancing Quality: When something is done for a long time, people will understand it better and as such will be easier for them to achieve the desired quality of work.

System building can only be achieved in a well coordinated development scenario and where designers (architects and engineers) work hand in hand to see to this goal. Architectural associations have been working hard to absorb such technologies in their practice. It is important to seek the available opportunities and to pursue all the possible avenues in a bid to hit these goals. It is also important to ensure that all the stakeholders are well informed about system building together with all the benefits that are possible with it. Like for the case of formwork, it is important to go for durable material to ensure that the benefits of this technology due to repetitive work.

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Steel Structure Design With Computer Aided Design and Drafting System

The impact of connection flexibility on the behavior of steel structures has long been observed, however, due to the complexity of accurately modeling connection effects in design analysis, these effects are generally not considered implicitly in design. The computer aided design systems can be used to analyze two and three dimensional structures. It offers effective 3D models and graphic environment to define and characterize beam-column-end plate connection behavior for steel structure design.

The inelastic connection behavior can be modeled using nonlinear moment rotation in CAD system to represent both geometric behaviors in framed structures. All CAD systems come with a library of standard moment-rotation curves which are attuned to test data to characterize each connection response.

Several trends are emerging in structure design and construction with emphasis on joint behavior in design. These include the analysis of inelastic limit state design process which require more realistic analysis of actual response, incorporating evaluation of structural response to seismic and other extreme loading conditions and structural challenges as required by innovations in architectural design. Advances in computer technology, especially the availability of less expensive engineering workstations, are offering the means for more realistic analysis of structures including joint behavior.

Existing computer aided design (CAD) technology can provide considerable improvements over conventional manual drafting methods to handle steel connections. Analysis and design systems such as AutoCAD and Tekla make it easier and more convenient to design structural frames. These advance CAD systems produce a full set of structural design drawings for joist systems, beams, columns, trusses, open web joists, rebars, anchors, metal decks, etc.

Parametric definitions facilitate quick revisions to any object type. New objects, details or symbols can be graphically created and stored in families that you can edit and reuse in other projects. This reduces coordination errors and improves project efficiency.

Experienced design professionals can help you save cost and time in many ways. For any queries related to Structural steel design and calculations feel free to contact us at info@outsourcestructuraldesign.com

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Construction: Composite attic system

Construction: Composite floor system: training video from the Corus BCSA training pack. "Composite floor slabs generally comprise profiled steel floor deck with in-situ concrete cast over the deck. The deck acts as permanent shuttering and spans in a direction transverse to the secondary beams. Primary and secondary beams in composite steel frames are rigidly connected to the floor slabs by 'shear studs', which are connected to the beams by through-deck welding techniques. This allows the floor slab and the beams beneath to act compositely. Beam depths are therefore less than any equivalent non-composite frames."

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V806M Coping system

This CNC-controlled beam coping system is especially designed for cutting different types of steel profiles, such as I-beams, channels, H-beams, flat-bars, angles, rectangular tubes and flat-bars. The Voortman V806M beam coping systems performance is highlighted by its high speed and very accurate cutting. The accuracy of the system is a result of a highly technical design with the robot mounted at the top of a solid frame, this fixed frame is positioned over the roller conveyors. To control the feeding of the profiles the system is fitted with measuring rolls which enable it to perform at high-speed and provides automatic positioning of the profile in the beam coping system.

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The Girder-Slab System

The Girder-Slab® Composite Steel and Precast System breaks new ground for residential building superstructures. The Girder-Slab® System consists of precast hollow core slabs, which are set and supported on the bottom flange of a unique steel girder. Unlike cast-in-place concrete structures, the Girder-Slab® System, in combination with a structural steel frame, is an entirely Assembled-in-Place superstructure developed exclusively for mid and high-rise residential buildings. In addition to speed of construction, the System offers low floor-to-floor heights in order to maximize overall building heights. www.girder-slab.com

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