CPCCBC4018A Apply site surveys and set-out procedures

Assignment Help Civil Engineering

Reference no: EM132784675

CPCCBC4018A Apply site surveys and set-out procedures to building and construction - Harward International College

Assessment Task - Demonstration / Observation

The assessment task is due on the date specified in your timetable which is the last date of the unit. Any variations to this arrangement must be approved in writing by your assessor.

This assessment is to be completed in the classroom / workshop / simulation setting at Harward International College. The required submission should be done by completing the work within the scheduled period for unit in accordance with instructions given below.

The task has assessment activities, designed to assess your skills, knowledge and performance, as required to show competency in this unit. You should complete these as stated below and as instructed by your trainer / assessor.

Part 1 - Site Levelling #1 - Shooting levels for excavation/footings

Your Assessor will provide you with a plan and specifications for a site. Complete the leveling and record all the data and processes in the Job Checklist below. Ensure that the leveling activity utilizes use of a spirit level and straight edge and automatic or laser levelling devices. To complete the activity, you may utilise the following equipment:

• automatic level and levelling staff
• bolt cutters
• chalk lines
• hammers
• laser levels
• laser targets
• marking equipment
• measuring tapes and rules
• plumb bobs
• saw stools
• saws
• signage for laser levelling
• spirit levels and straight edges
• string lines
• water levels
• wooden and steel pegs.

This task requires:

• Set up and test levelling equipment
• Transfer levels and record differences in height undertaking a closed traverse using both the rise and fall method and the height of instrument method on a minimum of three projects
• Confirm accuracy of the readings taken, including set up and movement of device in two locations
• Accurately record the results of each levelling procedure to organisational requirements
• Calculate distances using an optical levelling instrument and levelling staff
• Complete the Level Booking Form

Part 2 - Site Leveling #2 - Shooting levels on Sloping Block

This task requires:

Part 3 - Set Out Project

The practical construction task for this assessment is to set out a full-size L shape building on a relatively level site to specifications.

To complete this task, you must:

Complete a two-peg test

Before you start any project work your first task will be to carry out a two peg test to ensure your level is properly calibrated. Record in your field notes the process and state whether the test results are within the calibration limits.
Collimation error occurs when the collimation axis is not truly horizontal when the instrument is level. The effect is illustrated in the sketch below:

1. Set out and mark on the ground (with wooden pegs driven into the earth, or roofing nails in tar) two point some 40 m apart. Set up the level exactly mid-way (within 0.5m) between them.
2. Take measurements of backsight and foresight for this first setup. The height difference DH will be free of the effects of collimation error.
3. Next, move the level to a position just beyond the fore staff position (about 5m).

The difference between the readings of the two level positions should be zero. If more than 5 mm the instrument need to be calibrated.

Survey the site

This requires you to set up two levelling devices, and check the operation and accuracy of both. You are then to use the two devices to determine the level of rise and fall across the site using:
• reduced levels within accepted tolerances
• height of plane of collimation method.
Your reduced level sheet and all working documents must be provided to your assessor.

Set out the building

This requires you to set out the building in accordance with the drawings provided. This involves you:

• establishing the setback from the boundary
• setting up right angle lines and checking for square
• setting out remaining dimensions from the right angle lines
• measuring the diagonals to confirm square
• setting up lines for internal walls.
Your assessor will check your set-out on site. You should provide your assessor with any drawing or notes you used during the set-out process.

Survey and set-out calculations

This requires you to perform a number of calculations in order to get the site ready for construction. In relation to the building project:
• determine the set-out grid and levels
• prepare contour plans from the grid levels
• calculate the grades for the site - use angles, percentages and run ratios
• calculate the cut and fill required for the site to be levelled.
Your contour plans and all your calculations must be provided to your assessor.

Construct longitudinal sections

This requires you to construct longitudinal sections for a car park built on the site plan from the previous parts of this assessment. You need to be able to position the drains for the site and the line of the drainpipes on the site. To do this, you are to:
• determine levels and clearances
• draw longitudinal sections from reduced levels and running chainages
• express your calculations of grades as angles, percentages and run ratios
• calculate the batter levels
• provide a plan/drawing showing the position and heights of the drains and drainpipes on the site. You must hand in all working documents used to develop the final drawing.

Attachment:- procedures to building and construction.rar

Reference no: EM132784675

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