Week 5 Journal Primary Structure (horizontal and vertical)
Structural Concepts: Queen’s College Extension case study
In terms of primary structures, load bearing walls, decking, steel beams and precast concrete panels are featured throughout the building.
DESCRIPTION/ CLASSIFICATION OF STRUCTURAL SYSTEMS Foundations & footings On the site of the Queen’s College extension, strip footings and pad footings made of stiff silty clay can be found. Bored piers made of weathered siltstone rock are also present.
Secondary Structure (horizontal and vertical) Some secondary structures evident in the site are acoustic lining along walls, ramps, and rafters for roof framework.
Acoustic lining
Constructing Environments Brian Siu (635900)
Week 5 Journal
IDENTIFY 3 STRUCTURAL JOINTS 1. Panel Connection
IDENTIFY & DESCRIBE STRUCTURAL MATERIALS Concrete (precast and in situ) Concrete is featured in many structural members of the site, such as blinding concrete, strip and pad footings, slab on ground (top and bottom), bored pier, columns, suspended slabs and beams. Solid Pressed Bricks (reinforced) Brickwork is predominantly evident in the walls of the building. 2. Panel Joint Steelwork Steelwork is present in the form of welding, bolting, connections, roof sheeting and corrosion protection (internal steelwork not exposed, external steelwork exposed). Timber Timber can be seen in the beams built into brickwork.
3. Beam to Column Connection
Galv Steel Strap Bracing Present in the form of diagonal roof bracing.
Constructing Environments Brian Siu (635900)
Week 5 Journal IDENTIFY DIFFERENT FIXINGS Bolts Bolts are used for steel beam to column connections via cleat plates. Bolts are also used to secure bracing for panels.
ECONOMIC IMPLICATIONS OF DECISIONS Comparably low costs of production of this building, as materials are not expensive to produce. More of the budget can be used to install other features of achieving sustainability, such as water-harvesting roofing, solar panel, etc.
Concrete Concrete is used for footings to connect to walls. Nails Nails are used to secure brace wall brackets to non-load bearing walls. SUSTAINABILITY AND ENVIRONMENTAL ANALYSIS Carbon Footprint Slight increase, (production of concrete produces relatively lower amount of CO2) Concrete, bricks and steel are the main materials used Embodied Energy Very slight increase More energy efficient in production of materials Recyclability Higher possibility of recycling the materials used
Constructing Environments Brian Siu (635900)