This item used to connect between mullion and building to transfer loads.
Cb...center bolt.
Ab...anchor bolt
الخميس، 23 مايو 2013
An anchor bolt is used to attach objects or structures to concrete.
There are many types of anchor bolts, consisting of designs that are mostly proprietary to the manufacturing companies.
All consist of a threaded end, to which a nut and washer can be attached for the external load.
Anchor bolts are extensively used on all types of projects, from standard buildings to dams and nuclear power plants.
They can also be used to firmly affix embed plates to a concrete foundation when used with a structural steel element
السبت، 18 مايو 2013
SYSTEMS Structural glazing curtain wall systems may be found in many cities in Canada and in the United States.
It may be found with two or four sided capless glazing applications.
In Canada only two sided applications are used with the vertical joints of the IGUs being capless but there are a few specially designed four sided examples.
A structural glazing curtain wall system uses the same aluminum mullion components as the stick built curtain wall except that the mullion nose (neck) of the verticals is omitted to create a capless vertical joint system.The vertical joints between the IGUs are sealed on the outside with silicone sealant for a flush exterior appearance.The horizontal mullions are constructed with standard pressure plates and caps.
Tohold the IGU against the aluminum of the vertical mullion,the inner light of the IGU is held apart from the aluminum mullion with a gasket or spacer tape and a structural silicone sealant is applied between the glass and the aluminum.The joint or contact width is about 12.5 mm (or 1/2 inch).The structural silicone sealant forms a strong adhesive bond having a minimum strength of 20 psi.When the shop drawings are submitted to a silicone manufacturer,they will often warranty an application for twenty years if it is determined that all materials are compatible by testing. Silicone sealant is vapour permeable.In high humidity indoor environments,where the structural silicone may be exposed to high humidity during winter,the silicone may require a cap bead of moisture resistant sealant (butyl) to minimize the diffusion of humidity into the structural silicone glazed joint
A glass and aluminum curtain wall fabricated and installed as a panel system is referred to as a unitized curtain wall system.A unitized curtain wall will have the same components as a stick built curtain wall system.It will comprise aluminum mullions,an IGU and a spandrel panel mounted in a prefabricated aluminum frame.However,instead of assembling the glass and aluminum curtain wall in the field,most of the system components are assembled in a plant under controlled working conditions.This promotes quality assembly and allows for fabrication lead-time and rapid closure of the building
The oldest curtain wall type is the stick built system.It is a cladding and exterior wall system which is hung on the building structure from floor to floor.It is assembled from various components to include steel or aluminum anchors,mullions (vertical tubes),rails (horizontal mullions),vision glass,spandrel glass,insulation and metal back pans.In addition,there are various hardware components to include anchors,aluminum connectors, setting blocks,corner blocks,pressure plates,caps,gaskets and sealants
The glass and aluminum curtain wall is found in city centres on many new buildings and it is quite popular as a cladding and exterior wall on all types of commercial,industrial,institutional and residential buildings.The curtain wall is characterized with coloured vision and spandrel glass areas,a grid of aluminum caps and most recently with metal or stone spandrel covers (see Fig.1,page 1).It is also combined with other types of cladding systems such as precast,brick or stone to create attractive and durable building facades.
The curtain wall comprises a complete cladding and exterior wall system with the exception of the indoor finishes.It is generally assembled from aluminum frames,vision glass and spandrel glass (or metal or stone) panels to enclose a building from grade to the roof.It is available in three system types to include the stick built system,the unitized (or panel) system and the structural glazing system (capless vertical joints).The glass and aluminum curtain wall is designed to resist wind and earthquake loads,to limit air leakage,control vapour diffusion, prevent rain penetration,prevent surface and cavity condensation and limit excessive heat loss (or heat gain).It is further designed to resist noise and fire
الاشتراك في:
الرسائل (Atom)
