Attachment B Eng report

4.4

e Earthquake Design Category |

Wind Load

The building will be designed for wind loads in accordance with the
relevant Australian Standards (being AS/NZS 1170.2) for the
following parameters:

Basic Wind Velocity VF - 57m/s (Ult Strength Limit State)
Region - B

Terrain Category - 2.0

Multiplier factors Mz, cat = 0.96, Ms = 1.0, Mh = 1.3
Design Wind Speed - 72 m/s Ult limit state

- 60 m/s Permissible Stress Design

Soil Retaining Structures:
Refer also to final Geotechnical Report

Soil Density = 19 kN/m®
Horizontal Pressure - sloping backfill Ko = 0.75;
horizontal backfill Ko = 0.5
Surcharge: adjacent blocks — allow 10 kPa L.L. surcharge.
Provide vertical wick drainage behind all contiguous piled retaining
structures at 6m centres
Provide continuous sub-soil drains behind all conventional retaining
walls
Factor of safety against sliding:- temporary 1.2, permanent 2.0

Deflection Criteria

a) Horizontal (Lateral) movement (wind and seismic)
Total not greater than Height/500 (at permissible stress
loads)
Inter-storey not greater than Floor to Floor Height/500 (at
permissible stress loads)
b) Vertical movement (dead plus live load)
Slabs and beams are to be designed to achieve the following
maximum deflection criteria:

Incremental Deflection
General Span/500 or 15mm (whichever is less)

Long Term Deflection

Slabs Span/500 or 15mm (whichever is less)
Beams Span/500 or 15mm (whichever is less)
Spandrel Beams = Span/500 or 15mm (whichever is less)

Total allowable 20mm to end spans

(Slab + Beam) 20mm to internal spans

Cantilever Span/250 or 10mm (whichever is less)

Pre camber As required

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