Setting out 22/03/24

Methods for setting out a rectangular building, which ones are correct...there may be more than one answer.

• The services have been located and measurements have been taken to ensure work can start.

• The topsoil has been removed where necessary and the site cleared.

• Tools and equipment needed have been assembled.

• The appropriate drawings are on hand.

Setting out right angles, most buildings are square or rectangles. This means positioning .......... when setting out will involve creating right angles.

By applying the ratio .........to a right angled triangle we establish a 90- degree angle for the corner positions of a building.

What does a builders square do?

• Builders squares are the same as a bevel.

• It forms a 45-degree angle.

• Keeps the building line straight.

• It is used to create a 90-degree angle.

After looking at the drawings and finding the frontage line, what is the next step?

CLUE: We need to find the F..........Line.

When setting out buildings for square, what do we need to check?

Clue: Having established our frontage line and checked the front and side lengths are correct we need to check our ...............measurements.

What information should be marked on to the top of profiles?

There might be more than one answer.

• Foundation.

• Internal and external building lines.

• Centre Line, used as centre of dig.

• Datum.

What is another name for a datum mark.

Temporary ----- mark.

Name two pieces of equipment that can be used to transfer a level over a long distance, more than 20 metres.

• Straight edge and level.

• Optical level.

• Profiles.

• Laser level.

Why is it crucial when setting out and levelling from given reference points, that we ensure accuracy?

There might be more than one answer.

• Small errors on short distances, are amplified over longer distances.

• No need to worry, we can get over it.

• It is vital to ensure we are working to the correct datum and understand where this level has been set; IE DPC, Finished floor, top or underside of the floor beam.

• Any mistakes made at this stage can be costly and time consuming to rectify.