introduction to setting out a building

THE SITE IS CLEAREDTHE SITE IS CLEARED

MARKING OUT THE SITEMARKING OUT THE SITEOnce the topsoil has been removed (and levels reduced if necessary), the foundation can be set-out by surveyors or engineers. The graphic on the left shows the foundation plan superimposed over the site.

The line of the foundations can be highlighted using hydrated lime - here the trench centre line is being marked. On some sites you will find both sides of the trench marked. Digger buckets are available in various widths to suit specific trenches.

ESTABLISH AND TRANSFER SITE DATUMESTABLISH AND TRANSFER SITE DATUM

Normally found on numerous public buildings, usually incised into walls.

Ordnance Survey Bench Mark

(O.B.M.) (T.B.M)

TRANSFERRING LEVELSTRANSFERRING LEVELS

Always reverse straight edge and level together

SETTING OUTSETTING OUT

CHECKING FOR SQUARECHECKING FOR SQUARE

POSITION PROFILESPOSITION PROFILES

Boning Rods Datum

Temporary Bench Mark

POSITION CORNER PROFILESPOSITION CORNER PROFILES

CHECK THE DIAGONALSCHECK THE DIAGONALS

SETTING OUT WALLINGSETTING OUT WALLING

GAUGING THE BRICKWORKGAUGING THE BRICKWORK