construction logbook: week 9 part 1

ENVS 10003 CONSTRUCTION LOG BOOK

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Week 9: Detailing Strategies 2 Construction Workshop

• Stress Testing • Box Beam construction

Full Size 1:1 Detailing Drawing Tutorial

• Construction Site Visit: 522 Collins St • Concrete pour • Tension rods • Glazed curtain window system

eLearnings • Finish Work and Composite Materials • Wall finishes • Engineered composite materials • Flooring • Ceiling


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Construction Workshop 5th May 2014

Design brief: -Using the materials provided, construct a structure that will span a 1m gap and be as strong and rigid as possible, enough to substantially withstand a point load from directly above. Consider:

• The material-what works best in tension and compression-why? • In what way will your structure utilise the material inherited qualities • How will your design maximise the load bearing capacity?

Materials provided:

• 3mmx100mmx1200mm brace plywood X2 • 30mmx40mmx1200mm structural pine X2

Extra materials provided: • Handsaw • Measuring tape • Various types of nails • Bench hooks • Hammer • Power drill • Timber screws • Square


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Design:

Note: Plasterboard nails were used as they have a wider surface area on the head, thus a greater purchase between the pine and plywood

3mmx100mmx1200mm Brace Plywood

30mmx40mmx1200mm Structural Pine

Plasterboard Nails

Timber Decking Nails


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Materials used in construction: • 3mmx100mmx1200mm Brace Plywood X2 • 30mmx40mmx1200mm Structural Pine X2 • Plasterboard Nails • Timber Decking Nails

Final Product:

Plasterboard nails

Cracks in timber due to nails at each end


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Stress Testing: The device that we used was similar to the device shown here, however it was hand driven.

http://www.frontiersin.org/files/Articles/63674/fbioe-01-00013-HTML-r1/image_.jpg Device we used for stress testing:

Digital Pressure readout

Crosshead

Supports

Specimen

Impact point

Deflection ruler


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Stress Testing Result: Our structure withstood 380kg of stress before failing in the centre

• Structure shattered in the centre where the mass was applied

• Shattered where a nailed had weakened the structural integrity

• Faired pretty well relative to

other designs-small fracture rather than complete collapse

Peer designs:

Point of failure


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Full Size 1:1 Scale Detail Drawing


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Tutorial CBD Construction Site Visit

522 Collins St Overview: As a group we visited the Construction Site of 522 Collins St, soon to be new, Premium office space. We were given an overview of the various components and construction principled employed in the buildings construction and fabrication. The following show the construction techniques employed on site:

• Tension rods: increase the strength and rigidity of concrete once set

• Reinforcing for concrete

• Corrugated alloy sacrificial formwork for concrete

• Temporary formwork for concrete

• Onsite power

• Tension rods

1. 2.

3.


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• Set concrete

• Service corridor

• Formwork impression

• Temporary crane

• Concrete pump

• Mechanical system piping

5.

4.


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• Concrete pour process: Pumped up form cement trucks on the base level floor, pumped into the steel reinforcing’s, levelled, extruded and settled

• Concrete pump

• Bundles of steel rods for the tension casing

• Tension casing

• Arterial reinforcing

6.

7.


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• Safety barriers

• Concrete pump mechanism

• Column reinforcing

Figures 1-8: 10th floor external concrete construction 8.

9.

• Internal steel sacrificial concrete formwork

10.

Figures 9-10: 10th and 11th floor internal concrete formwork


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11.

12.

• Fire system

• 30mm polyurethane insulation board coated with sisalation paper to increase thermal insulation properties

• Temporary formwork

• Glazed curtain wall: unit system (pg. 93)

• Temporary safety barrier


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• Hanging support system

• Space for glazed curtain wall system installation

• Theodolite

• Glazed curtain wall units

• Installation process: units are hung from a series of cantilevered rails, which are fixed to the above concrete floor. They are then connected with a system of weather proof stripping and galvanised steel brackets. All curtail walls are non loadbearing

13.

14.


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• Galvanised steel bracket

• Concrete bracket

• Weatherproof stripping

• Temporary safety barrier

16.

15.

Figures 11-16: 4th and 5th floor glazed curtain wall installation process


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• Reinforced steel pylons are a structural as well as an aesthetic feature

• Open foyer integrates the structure with the landscape

• Mechanical systems-climate control

• Temporary cover paper-protect the surface

• Base of the temporary crane

• Exposed sacrificial formwork

19.

17.

18.

Figures 17-19: Ground floor superstructure

Location of photo

construction logbook: week 9 part 1

Documents

construction log book

construction principled

construction techniques

buildings construction

drawing envs

end envs

point of failure envs

plasterboard nails cracks