Week 7 ce

E-learning

The roof loads is transferred to the ground through the walls and columns

Roof Systems In the e-learning, the main structures in the roofing system is discussed.

The slope of the roofing system influences the material -

A roof pitch with a lower pitch would require metal sheeting A roof with a higher pitch could use roofing tiles A flat roof would require a water proofing membrane because unlike a sloping structure it the structure is unable to let rain water to flow to the gutters quickly.

It is also mentioned that the columns would need to be positioned to suit the roof span capacity aswell as the interior layout of it is being used.

The common structures seen in the roof systems are

The slope on the roof enables water to flow to the gutter

Similarly to the flooring systems, the roofing systems have -

-

Spans across the space to strengthen the structure

span

-

Purlins Rafters Truss system

Different types of materials used in the roof systems is discussed Concrete roofs -

Primarily used in roof gardens and car park

They are many types of structures used to hold the roof -

-

Tapered

-

There are many types of different steel strusses that was mentioned in the e-learning as well as in ching(2008).

The common steel truss Join using pin joints

Parapet

The triangular structure makes it efficient. It uses tensile strength to withstand loads

A roofing system needs to have a rigid frame -

-

Flat truss

Which consists of 2 columns and a beam or girder to provide rigidity connected to their joints Vertical loads cause rigid frame to develop horizontal trusts

Less efficient

-

Clad roof structure -*

- prevents aggregates or sand as well as water to seep into the building New materials In modern age the usage of technology in the building industry is expanding. This is called the digital revolution

One of the rules that was mentioned is -

Architecture is mainly about enclosing space The main problem in building is the spanning spanning space which requires how to put roof over space.

It was mentioned on According to the e-learning it says that sustainability is highly prioritise in this eras of building -

Sustainability means looking forward and finding ways on how to build new buildings.

To create the fabricated or prefabricated buildings -

Simulation energy is needed This will predict how buildings will perform in a certain climate It can also help to create a façade that includes more innovation.

One of the main examples that was given in the e-learning was te Beijing National Aquatic Centre - It’s façade uses a technique which can be called the cushion triple layer or ETFE cushion - The climate, heat and amount of ultraviolet rays changes the façade - when the weather is hot, the building will detect It causing the transparent and translucent when cool Spanning spaces

-

How materials can affect the building system.

How to span with strength

The example given was -

The usage of stones to build arches However it isn’t stable and strong The usage of using bricks enabled to create a more stronger arch *

One of the main question that was mentioned is how to build a stable arched tunnel The solution was to -

Built a linear arch Relies on friction for the next layer

Tutorial: This week in the tutorial, the class visited a construction site where a nursery for individuals that were suffering from dementia is being built.

The ground is dug below the surface to start the building of the foundation A few structures were identifiable at the site

Steel mesh to act as a concrete reinforcement

We were brought to a site where another building is being constructed

Steel column- used for bracing

Concrete column- to support the concrete structure

Metal cladding-to form the ceiling and to prevent any leakage from the upper floor

Inside the building:

bearer

Columns for reinforcement

rafters

wire

Room: We were shown a rather completed room for the patients

Top floor:

Display cases so that photos can be displayed enabling the patients to recognise their rooms

The top floor is still incomplete.

However, will be used as a roof top garden for the patients.

Hand rail for support

The room is equip with motion sensors so that if anything happens to the patients such as wetting the bed, the nurses will be alerted.

Steel wired reinforcement – use to strengthen the structure of the building via tensile strength