week 10 - lecture slides (civil design)

8/3/2019 Week 10 - Lecture Slides (Civil Design)

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4121 ENG4121 ENG

Integrated DesignIntegrated DesignCivil Design ProcessCivil Design Process

Week 11

Mr. Michael Lepelaar

Email: [email protected]

Ph 55281855


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Civil Design ProcessCivil Design ProcessThere are a number of processes which are

undertaken to ensure the civil design will be

adequate for the requirements of the client, statutory

authorities and end user:-

1. Collect Relevant Information

2. Design Outcomes

3. Earthworks Design4. Sediment & Erosion Control

5. Roadworks Design

6. Sewer Design


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Civil Design ProcessCivil Design Process

7. Water Reticulation Design

8. Specifications

9. Testing10. Approvals Process

11. Project Design Requirements (Civil)

1. Drainage Design (Next Lecture)


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Collect Relevant InformationCollect Relevant Information

It is important that all relevant information is

gathered to ensure that the civil design adequately

caters for all site constraints.

Geotechnical report

-California bearing ratio (CBR)

-Maximum dry density-Compressive strength

-Slope stability

-Acid sulphate soils

-Shrink/Swell index


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GEOTECHNICAL REPORT


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Detail Survey

-Property boundaries

-Earthworks levels-Roads

-Existing services

Dial Before You Dig

Capacity of Existing Services

-Flow and pressure test

-Capacity of sewer system


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DETAIL SURVEY


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DIAL BEFORE YOU DIG


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FLOW & PRESSURE TEST


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Design Drawings

-Architectural drawings

-Development plan

Development Permit

-Material Change of Use (MCU)

-Reconfiguration of a Lot (ROL)


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ARCHITECTURAL DRAWINGS


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DEVELOPMENT PLAN


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DEVELOPMENT PERMIT


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Design OutcomesDesign Outcomes

Does the design provide enough information for theworks to be built?

Is the information provided clear and

unambiguous? Is the design the cost effective?Duty of careCheck your design!


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Earthworks DesignEarthworks Design

When preparing an earthworks design for a

development there are a number of items which need

to be considered to ensure the economy, safety and

design life of the project.

Batter slopes

-Max generally 1v in 2h however subject to type ofmaterial and surcharge loads

-Slope stability (benching, surcharge loads anderosion)

-Long term factor of safety of 1.5


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Batter slopes (cont.)

-Keyed in where required

-Re-vegetation

-Location

Retaining walls

-Types (Boulder, concrete sleeper, timber sleeper,masonry block)

-Cost

-Loads

-Location


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Site grading

-Minimum and maximum grades

-Overland flow

-Free draining-Long term stability

-Slope sensitive development

Topsoil

-Stripping

-Replacement


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Cut to fill (Cont.)

-Balance, import or export

-Unsuitable material

-Cost-Type of material (poor material, good material,rock)


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EARTHWORKS PLAN


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Sediment & Erosion ControlSediment & Erosion Control

To ensure that the proposed development does not

negatively affect the environment we are required to

ensure that sufficient measures are in place to control

sediment and erosion.

State and local government requirements

-Department of Environment and ResourceManagement (DERM)

-Local council


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Sediment & Erosion ControlSediment & Erosion Control

Soil Erosion and Sediment Control EngineeringGuidelines (Engineers Australia)

Controls measures-Silt fence

-Sediment ponds

-Field and gully inlet protection

-Turfing and seeding

Audits/Inspections


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SEDIMENT & EROSION CONTROL

PLAN/DETAILS


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Roadworks DesignRoadworks Design

As the engineer we are required to ensure that the

proposed development will adequately provide for

safe access to the development and within the

development.

Design Vehicle

-Type of vehicle the development needs to cater for(size, weight)

-Frequency of vehicles


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Road hierarchy

-Access, collector, rural, urban

Safety-Safe design

-Road furniture (guard rails, signage)

Grading

-Longitudinal grade

-Cross fall

-Minimum and maximum grades


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Grading (cont.)

-Disability access (AS1428)

Layout-Horizontal alignment

-Sight distance

-Site access

-Affects of proposed development on neighboringroads

-Site maneuverability (vehicle turning)

-Disability movements (AS1428)


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Car parking

-AS2800

-Minimum lengths/widths

-Aisle widths-Vehicle turnover

-Disability parking

Vehicle crossings


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Signage & Line marking

-AS1742 (Manual of Uniform Traffic ControlDevices)

Pavement Design

-Types (rigid or flexible)

-Subgrade strength (CBR tests)

-Pavement materials

-Pavement thickness

-Expansion joints

-Austroads pavement design manual


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Pavement Design (cont.)

-Cement and Concrete Association of Australiadesign guides

-Local Council pavement design tables

Design Guides

-Local Council Guidelines

-Queensland Streets

-Austroads

-Main Roads Design Guide

-MUTCD


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ROADWORKS PLAN


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PAVEMENT DESIGN GUIDES


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Sewer DesignSewer Design

Each lot in a development is required to have

adequate services to cater with the waste generated

from the use of the land.

Private or Council asset

Works internal to lot boundary (private asset)

-AS3500.2

-Fixture units

-Minimum grade

-Minimum pipe size


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Works internal to lot boundary (private asset) cont.

-Cover to pipes

-Pipe class/material

-Inspection openings-Connection point to Council main

-Location

Works external to lot boundary (Council asset)

-Council design guidelines

-Estimated tenements


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Works external to lot boundary (Council asset)cont.

-Minimum grade

-Minimum pipe size-Cover to pipes

-Pipe class/material

-Connection point to existing infrastructure

-Easements

-Upstream properties

-Proximity to buildings/zone of influence

-Location


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Alternatives

-On site effluent treatment

-Evapotranspiration

-Absorption-Irrigation

-Septic tank

-On site treatment plant


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AS3500.2


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SEWER RETICULATION PLAN


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Water Reticulation DesignWater Reticulation Design

Similar to sewer, engineers also need to ensure

that each lot within a development is provided with

adequate water supply.

Private or Council asset

Works internal to lot boundary (private asset)

-AS3500.1

-Fixture units

-Minimum pipe size

-Cover to pipes


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Works internal to lot boundary (private asset) cont.

-IPA Selecting and sizing of copper tubes forwater piping systems

-Pipe class/material-Connection point to Council main

-Minimum flow and pressure

-Firefighting (sprinklers, booster, water tanks,

separate main)-Location

-Recycled water

-Water reuse


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Works external to lot boundary (Council asset)

-Council design guidelines

-Estimated tenements

-Minimum pipe size-Cover to pipes

-Connection point to existing infrastructure

-Minimum flow and pressure

-Firefighting

-Valves, hydrants, air valves, scour valves

-Easements


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Works external to lot boundary (Council asset)cont.

-Location

-Recycled water

Alternatives

-Water tanks


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INSTITUTE OF PLUMBING AUSTRALIA


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WATER RETICULATION PLAN


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SpecificationsSpecifications

To ensure works are constructed to a suitable

standard a specification will usually be noted or

provided with the design.

Content of specification

-Minimum requirements

-Quality of materials

-Type of materials

-Testing of materials

-Construction techniques


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SEWER SPECIFICATION


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TestingTesting

As works are being completed, testing is usually

undertaken in accordance with government

requirements or as nominated within a specification.

As the engineer we are often required to review andverify the tests.

Earthworks

-AS 3798 Guidelines for earthworks on commercialand residential developments

-Level 1 sampling and testing

-Level 2 sampling and testing


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TestingTesting

Earthworks (cont.)

- Frequency of testing (Table 8.1 or local spec)

-Density tests

-Maximum dry density ratio-Optimum moisture content

Roadworks

-Grading of pavement material

-CBR of subgrade

-Density of subgrade and pavement material


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TestingTesting

Roadworks (cont.)

-AC Grading

-AC Thickness

Sewer Reticulation

-Pressure & vacuum testing

-Ovality testing

-CCTV

-Trench backfill testing


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TestingTesting

Water Reticulation

-Pressure testing

-Bacterial testing

-Trench backfill testing


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TEST RESULTS


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Approval ProcessApproval Process

There are a number of approval processes which

may be required in order to commence the

construction of your engineering design.

Different processes depending on whether worksare internal or external to the lot boundary

Internal works

-Private certifier

-Plumbing and drainage application (IDAS forms)

-Form 15 & Form 16


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Approval ProcessApproval Process

External works

-Works to be transferred to Council

-Application usually to Council

-Operational works application (Change to GroundLevel, Works for Infrastructure)

-Sustainable Planning Act (SPA)

-Integrated Development Assessment System

(IDAS)-Referral agencies


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APPLICATION FORMS

P j t D i R i tP j t D i R i t


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Project Design RequirementsProject Design Requirements

(Civil)(Civil)

For purposes of the civil component of your project

please assume that the project is located within Gold

Coast City Council.

Earthworks

-Mark up site plan showing proposed finishedlevels in carpark and building ground floor.

-Indicate where you believe retaining and earthbatters may be required.

-Building floor to be flat and surrounding footpathto have max 2% fall away from building.

P j t D i R i tProject Design Req irements


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(Civil)(Civil)Roadworks

-Check car parking against AS2800 for baydimensions and aisle width based on user class 1.

-Building requires 57 car parks including 2disabled car parks. Indicate location for disabledcar parks and associated shared area. Access to

building adjacent to entrance.

-Pavement design (client requires asphalt car park,assume subgrade CBR of 5%).

P j t D i R i tProject Design Requirements


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(Civil)(Civil)Sewer

-Proposed sewer layout from Council connection toedge of building (show invert levels, pipe size andgrade based on 1,100 fixture units).

Application Forms

-The development will require an Operational

Works application to Council for earthworks,roadworks and stormwater drainage. CompleteIDAS form 6 which would usually be included inyour OPW application.


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Drainage DesignDrainage Design

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week 10 - lecture slides (civil design)

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