07/0616 - Response to Information Request [As Published] · 132007.616

Site drainage during construction is important. Stormwater run-off should be diverted away from any
foundation excavations and not be able to pond within 5.0m of the building footprint. Temporary spoon
drains or other practical methods should be used.

Where site drainage and landscaping does not conform to the specifications of AS 2870-1996 and CSIRO
Information Service Sheet BTF 18 (2003) significant damage to the building can be expected. A single
copy of this document is issued with the original issue of this report. Please consult your builder or
contact this office to obtain a copy.

6.0 FOOTING AND SLAB SPECIFICATIONS:
Footing Detaits:

All footings must be founded a minimum of 300mm into NATURAL MEDIUM DENSE SANDS (shaded on
the attached log sections). Dimensions and reinforcement requirements are detailed in the following
footing plan and cross-sections.

Drilled Piers Supporting the Footings:

Where the NATURAL MEDIUM DENSE SANDS is deep or to be covered by fill the footings can be
supported on concrete filled drilled piers founded into the NATURAL MEDIUM DENSE SANDS. The
depth of these piers should be determined by a specialist contractor.

Steel Screw Piers:

Alternatively steel screw piers can be used to support the loads nominated in the structural plans. The
piers are to be designed and installed by a specialist contractor. The contractor must satisfy themselves
with the soils information contained herein to achieve the loads nominated ‘on the structural plans.
Further testing may be required and is beyond the scope of this report.

Drilled Piers Supporting the Slab: .

Slab piers are required where there is more than 300mm of uncontrolled fill beneath the slab. They are to
be founded at a minimum of 300mm into the NATURAL MEDIUM DENSE SANDS. Special attention
must be paid to the extra thickening and reinforcement required over each pier as detailed in the attached
plan and details.

Where unexcavatable rock is encountered at depths shallower the founding level the piers shall be
augered a minimum of 100mm into un-weathered or un-disturbed rock.

Where drilled piers supporting columns or posts are not poured with the slab they must be connected to
the slab in the following manner:

¢ 4x N12 bars must be anchored 500mm into the drilled pier and be bent 300mm horizontally into the
footing or slab as required.

« Where a column penetrates a beam or footing 3x N12 bars must be bent around the column to lap the
trench mesh by 500mm both sides.

Steel Screw Piers:
Alternatively steel screw piers can be used to support the loads nominated in the structural plans. The
piers are to be designed and installed by a specialist contractor. The contractor must satisfy themselves

with the soils information contained herein to achieve the loads nominated on the structural plans.
Further testing may be required and is beyond the scope of this report.

SCG CONSULTING ENGINEERS 3 SCG Ref: 17177(S)