wt5912 unit5 week7

Department of Design & Manufacturing TechnologyLecturer/Teacher: Mr. Joseph Lyster Academic Year 2011: Spring SemesterTechnical Support: Mr. Joe Murray & Mr. Richie Hennessy

Notes prepared by: Mr. Joseph Lyster

WT5912TECHNOLOGY EDUCATION & WORKSHOP PRACTICE 2: MATERIALS AND CONSTRUCTIONUnit 5 – Week 7 Planning Permission to Subfloor Construction

Department of Design & Manufacturing Technology

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Cork Rural Design Guide

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Site Selection:

Check the development plan

Reading the landscape

Choosing where to build

Assessing a site’s potential

Linking with the land

Summary & Checklist

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Check the development plan

Check with County Council/Local Authorities planning policies & procedures

Policies restricting/permitting development in certain areas e.g. Greenbelt, Coastal Areas, Rural Housing Control Zone etc. Scenic Amenity Maps - scenic routes and scenic landscapes; Heritage maps - Natural Heritage Areas (NHA), Special Protection Areas (SPA) and

candidate Special Area of Conservation (SAC) and Areas of Geological Interest; Landscape Character Maps; Archaeology policies, the Record of Protected Structures and conservation

policies.

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Reading the landscape

Lowland Valleys

Mountains

Fertile Plain

Fissured Marginal and ForestedRolling Upland

River and Reservoir Valleys

Ridged, Peaked & ForestedUpland

Indented Estuarine Coast & BroadBay Coast

Headlands

Coastal Islands

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Choosing where to build

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Assessing a site’s potential

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Dwelling Orientation

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Site Boundaries

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Site Boundaries

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Internal Plan

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Internal Plan

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Types of Planning Permission

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Documents Required

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Site Map

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Procedures

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Patterns for Rural Development

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Planning Checklist

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Site Notice

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Trial Hole: 1m² x 1.5m Deep

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Site Level and Profiling

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Site Level and Profiling

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Profiling/Setting Out

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Majority of buildings Continuous strip Reinforced concrete Rests on the soil Depth and Width

Soil type and building load

Strip Foundation

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Traditional Strip foundation Most commonly used Usual 1050 X 350mm Suitable for –

Average – Good bearing capacity soils

Not suitable for – Very soft clays Silt Peat Badly made – up - ground

Strip Foundation

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Stepped Strip foundation Sloping sites Reduce excavation Step depths

112mm or 225mm Overlap of concrete

Minimum 300mm Not less than depth

of concrete foundation

Strip Foundation

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Wide Strip foundation Not common Reinforced

Transverse reinforcement Resist tensions

Wider than 900mm Suitable for –

Ground with low bearing capacity Expensive

Strip Foundation

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Deep Strip foundation

Rests on suitable strata

Excavate 900mm or more

Trench filled within 150mm of ground level

Width depends on depth

Deep Foundation

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Raft foundation Suitable for –

Low load bearing soils Soft natural ground

Very soft clays Silt Peat

Made – up – ground Average – Good bearing capacity soils instead of strip

foundations

Raft Foundation

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Raft foundation

Concrete slab Reinforced slab Up to 300mm thick Whole building area Pavement All Loads transmitted Slab thicker under load bearing walls

Raft Foundation

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Carry and transfer loads Subsoils of poor bearing capacity Deeper soil and rock of a high bearing capacity Avoids excessive excavation

Plan of pile positions

Pile Foundation

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Made from Wood Steel Concrete

Placed in ground Driven Drilled Jacked

Pile Foundation

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Equipment To clear site

Hymac’s JCB’s

To remove / move materials Tractors Trailers Dumpers

Heavy Machinery

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Images courtesy of: Mr John Joyce

Site Entrance

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1050 mm bucket

External – cavity leaf wall foundations

350 mm bucket

Internal – single leaf wall foundations

Large bucket

Used to clear site’s topsoil

Site Clearance

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Perimeter trenches dug with 1050 mm bucket Internal trenches dug with 350 mm bucket

Site Clearance/Excavation

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Open Timbering

Close Timbering

Excavation

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Excavation

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Mild steel bars Provide tensile strength

Min. 25mm from surface Prevents rusting Adequate depth to support

Spacers Position reinforcing bars Provide the necessary cover

Excavation/Foundation Preparation

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Cement trucks pull in on site Concrete poured directly into trench Filled up level with tops of pegs Levelled roughly with shovels

Top of wooden peg to which the foundation will be levelled to

Laying Foundation

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Tapered off level with tamping board

Laying Foundation

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Laying Foundation

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Foot/Rising Walls

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Foot/Rising Walls

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Foot/Rising Walls

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Foot/Rising WallsProvision for Services

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Foot/Rising WallsHard-core fill

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Foot/Rising WallsRadon/DPC/Insulation

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Foot/Rising WallsPlumbing

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Subfloor

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External Walls

wt5912 unit5 week7

coastal areas

development plancheck

development planreading

certain areas e

special protection areas

conservation policies

rural housing control

sites potentiallinking

Education

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