‘Structural Concepts’ Part One
Constructing Environments Maxwell Bracher 636699
FOUNDATIONS AND FOOTINGS
SECONDARY STRUCTURE
PF(1): Pad Footing
R: Rafters at 900 centres 1: 190 x 45 Pine
500 x 500 x 400 deep
Excavated concrete blinding piers
1200 x 450
2: 140 x 45 Pine
3: 170 x 45 Pine
PRIMARY STRUCTURE Pre-cast reinforced concrete panel walls Horizontal bracing: steel rods RB(2, 7, 8): Roof Beam 150 x 75 PFC
Grade 300
Constructing Environments Maxwell Bracher 636699
FOUNDATIONS & FOOTINGS
1200 x 450 Excavated Concrete Blinding Piers (right and bottom right)
Pad footings
Constructing Environments Maxwell Bracher 636699
PRIMARY STRUCTURE Pre-cast concrete panels Panel connection (middle) Panel to steel beam (far right) Roof beam (RB) (bottom)
Constructing Environments Maxwell Bracher 636699
SECONDARY STRUCTURE Horizonal bracing - steel rods
Rafters fitting to non-load bearing wall
Constructing Environments Maxwell Bracher 636699
IDENTIFICATION, DESCRIPTION AND LOCATION OF STRUCTURAL MATERIALS a) CONCRETE - walls are pre-cast, reinforced, slab is built in situ as are the pad footings. b) STEEL - hot-rolled universal beams, PFC, or cold-formed bracing. c) TIMBER - pine rafters. d) BRICK - pressed brick, existing walls.
STRUCTURAL JOINTS Pre-cast panel joint - ‘Achtech’ corners and Type A Cast in plate. (top) Typical steel beam to pre-cast panel joint. Cleat plate. (middle) Rafter to non-load-bearing or freestanding wall.
Constructing Environments Maxwell Bracher 636699
STRUCTURAL FIXINGS a) WELD - to secure the cleat to columns and other members b) CONCRETE - fixing steel plate to concrete columns. Forms pre-cast walls c) BOLT - secures PFC beam to existing brick wall d) NAIL - secures timber rafters to non-load-bearing walls
Constructing Environments Maxwell Bracher 636699
SUSTAINABILITY AND ENVIRONMENTAL ANALYSISL CARBON FOOTPRINT: Concrete construction requires less insulation. No air-conditioning saves on energy EMBODIED ENERGY: Consider the transport of pre-cast panels to site. RECYCLABILITY: Very little opportunity.
Constructing Environments Maxwell Bracher 636699
ECONOMICAL IMPLICATIONS OF DECISIONS: Pre-cast concrete is a very cheap, efficient material Small, glass-brick windows save on cost Common steel roofing is readily available and cost-effective Little necessity for large, expensive footings
Constructing Environments Maxwell Bracher 636699