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MATERIALS FOR FORMWORK

The Constructor

Steel: Steel is also used in pre-fabricated formwork. Purpose made steel forms are fabricated when dimensional tolerances are critical, or when the forms are planned to be re-used. Aluminium: Often used in pre-fabricated formwork, that is put together on site. waffle floors).

Materials 136
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FORMWORK AND GOOD FORMWORK PROPERTIES

The Constructor

Its importance is evident when you consider that the cost of fabrication, erecting and striking the formwork, often exceeds the cost of the concrete it is designed to shape and support. Always inspect the formwork prior to pouring. GOOD FORMWORK: There are two factors that decide how well the concrete will look in the final result.

Concrete 223
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COMMON STRUCTURAL FAILURE CAUSES

The Constructor

2) poor communication between the fabricators and erectors. (3) The most common causes of structural failures are: (1) Poor communication between the various design professionals involved, e.g. engineers involved in conceptual design and those involved in the supervision of execution of works. (2)

Concrete 177
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POST TENSIONING IN REHABILITATION OF STRUCTURES

The Constructor

Reinforcement was fabricated and fixed along with post tensioned mono strands (encased in HDPE pipe) to profile. After fabricating and fixing shuttering in position, micro concrete encasement was carried out throughout the core holes in the slab. End anchors of post tensioned strands were fixed in position.

Concrete 152
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Green Home Building and Sustainable Architecture: Building with.

Natural Building

Green Home Building and Sustainable Architecture. Kelly Hart has been involved with green building concepts for much of his life. The roof is strong enough to support the extra weight of a green roof — which has vegetation growing on it — if the owner should want it. Name: Kelly Hart. Location: Crestone, Colorado, United States.

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FIXING OF PRECAST CLADDING

The Constructor

The metal should have good workability but also keep its strength during fabrication. Green part in the drawing represent restraint fixing and blue part as load bearing fixing. Non standard materials are difficult to purchase and also very expensive.

Concrete 124
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DEFLECTIONS IN DETERMINATE TRUSSES

The Constructor

The displacement can be computed as ……………. (1) In such cases, applying the principle of virtual work, ………………….2(a) 2(a) Where, = change in length of member k, = change in thermal expansion of member K = change in temperature.

Concrete 128