McEvoy and Langston inc

McEvoy and Langston inc
CPCPCM 2047A CARRY OUT LEVELLING McEvoy and Langston inc

Safety - General Ensure you have the correct personal protective equipment. To attempt this unit. Overalls Boots Safety glasses Ear plugs Dust masks Gloves McEvoy and Langston inc 6 1/1

Introduction - we need levelling for
Pipe placement Recording levels at points along a set out Recording and checking levels in drainage and sanitary excavations McEvoy and Langston inc P7 1/3

Planning Building plans and specifications Layout and shape Location and size Position of building Job plans What is required Relevant statutory and authority requirements Dictate how the job must be done while following rules and regulations Site inspection Allows you to get a picture of conditions and expectations McEvoy and Langston inc P7 2/3

Question 1 . In regards to planning of the job, what information could be collected prior to the job commencing? Building plans and specifications Job plans Statutory and authority requirements Site inspections McEvoy and Langston inc P7 3/3

Quality assurance Discuss issues as listed in your work books McEvoy and Langston inc P /2

Safety of Laser Equipment
Tools to be kept clean Avoid looking into class 2 & 3 lasers above ground and in trenchers can be dangerous Lifting will damage your back Stop the traffic in the work area McEvoy and Langston inc P8 2/2

Personal protective equipment (PPE)
• Overalls, used when working in trenches • boots must be worn when working on - site • gloves may be worn • hard hats should be worn by persons operating levelling equipment McEvoy and Langston inc

Tools and equipment Water level Spirit level Boning rods Tripod mounted automatic levels Rotating laser levels. (class ) McEvoy and Langston inc P9 1/2

Water level 10 – 15mm clear tube Accurate Around corners Used by Brickies and pool builders etc Generally a two person operation McEvoy and Langston inc P /2

Question 2 What type of level will you be using when working buy yourself. Spirit level Rotating laser level Pipe laser McEvoy and Langston inc

Question 3 What can a water level be used for? Fast accurate levelling Around corners Over long distances Out of line of site levelling McEvoy and Langston inc

Question 4 How many people are required to operate this type of level? Generally two people are required, but you can use a clamp on one end if required. McEvoy and Langston inc

SPIRIT LEVELS McEvoy and Langston inc P /3

Spirit levels Plastic tube Fitted into box section Most levels do vertical as well as horizontal All lengths available (600mm most common for plumbers) Can be extended with a straight edge McEvoy and Langston inc P /3

P /3

Boning rods BONING RODS Two pieces of timber or metal fixed to form a “T” 3 boning rods of exactly the same measurements form one “set” P /3 McEvoy and Langston inc

Boning rods The top of each TEE is about 400mm long The length of each boning rod needs to be exactly the same length. P /3 McEvoy and Langston inc

Boning rods USE OF BONING RODS McEvoy and Langston inc P 11 3/3

The staff Automatic levels require a telescopic staff 3, 4 or 5 metres in length Easy to read over a long distance McEvoy and Langston inc P 11 1/3

The staff Major markings Numbers indicate the vertical distance in metres from the bottom of the staff and are marked every 0.1metre (100mm) Minor markings Left and right facing E’s which are 50mm high with a 10mm thick legs The bottom of the E is .1 or 100mm mark The right facing E indicates the number will be even The left facing E indicates the number will be odd McEvoy and Langston inc P /3

The staff Spaces between white marks are 10mm as are the black/red legs of the E’s McEvoy and Langston inc P /3

Automatic level Automatic levels Must be set up “level” McEvoy and Langston inc P /2

Automatic level An optical compensator suspended like a pendulum within the level allows the user to sight in different directions without having to adjust McEvoy and Langston inc P /2

Laser level Accurate Easy to use Electronic receiver One person operation Perfect for plumbers to calculate gradients for drainage McEvoy and Langston inc P /1

Question 2 What type of level will you be using when working buy yourself. Spirit level Rotating laser level Pipe laser McEvoy and Langston inc

Other tools and equipment
Hammer or mallet Wooden pegs String line Shovel Tape measure Telescopic staff Pen or pencil and paper to record measurements McEvoy and Langston inc P /1

Question 5 How may the length of a spirit level be increased? McEvoy and Langston inc

Question 6 Describe the shape and size of the three boning rods used for levelling the trench floor. McEvoy and Langston inc

Question 7 How do you know if the automatic level itself is level, when first setting on the tripod? McEvoy and Langston inc

Question 8 What is the name of the instrument which picks up the signal transmitted by the laser level? McEvoy and Langston inc

Question 9 What big advantage does the laser level has over the automatic level? McEvoy and Langston inc

equipment Using leveling
As each piece of leveling equipment may be better suited to one application over another McEvoy and Langston inc P /3

Getting started your final measurement should be within a tolerance of ± 5 mm. McEvoy and Langston inc P /3

Using a straight edge and spirit level
it is important that the level is sitting directly against the straight edge with a clean surface between them McEvoy and Langston inc P /3

James Langston's wife at a Weekend away at Crown casino McEvoy and Langston inc

Using boning rods sight over the rods while an assistant moves the remaining third rod along McEvoy and Langston inc P 16 1/1

Using an automatic level
Set up correctly No danger to operator Set up Tri pod first instrument second Adjust levelling device Good communication McEvoy and Langston inc P 17 1/1

Using a laser level Spread the legs of the tripod and press firmly into the ground, so the top platform is roughly level. Fit the level to the tripod by tightening the tripod screw Turn on the level so that it will transmit the electronic beam. Connect the receiver to the staff McEvoy and Langston inc P /1

Handling and caring for levelling equipment
We will now discuss the correct use and care of the various pieces of levelling equipment. McEvoy and Langston inc P /1

Question 10 A length of timber can be an excellent straight edge to use with a spirit level. How would you select the right piece of timber for the job? McEvoy and Langston inc

Question 11 When using boning rods two holes are dug at either end of a proposed trench. Why do we place a peg at the bottom of these holes? McEvoy and Langston inc

Question 12 What two (2) things should you look for when choosing a place to set up the automatic level? McEvoy and Langston inc

Question 13 Why should a staff be held vertical when readings are being taken by the automatic level? McEvoy and Langston inc

Question 14 What are the two graduations on a staff at intervals of? Minor Major McEvoy and Langston inc

Question 15 What is the reading on the staff taken at the arrow? McEvoy and Langston inc

Calculating the fall and gradient of a drain
To convert 1.65% into a ratio divide 100 by 1.65 = 60.6 (60:1 approximately). • To convert 60:1 to a percentage divide 100 by 60 = 1.66 (1.65% approximately). McEvoy and Langston inc P /2

Calculating fall McEvoy and Langston inc P /2

Calculating fall Fall is the difference in height between your start point and finish point Fall is 891mm McEvoy and Langston inc P 21 2/2

Calculating gradient To calculate gradient you would need to know the length and the fall. McEvoy and Langston inc P 22 1/2

Calculating gradient McEvoy and Langston inc P /2

Question 16 Calculate the fall of a 66 metre drain with a gradient of 1.65%. McEvoy and Langston inc

Question 19 If a level is found to be faulty, what should you do with it? McEvoy and Langston inc

CARRY OUT LEVELLING We will now discuss the correct use of the various pieces of levelling equipment. Break into groups to have your trainer assign a project to you. This should take about 3 hours McEvoy and Langston inc

McEvoy and Langston inc

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