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WorksheetsOcc 33 Construct complex masonry strucures
Total questions: 18
Worksheet time: 21mins
Once complete a section of plinth work during the summer at the base of the building, why is it necessary to cover the work before continuing with the building of the structure?
To eliminate the possibility of mortar droppings staining the plinth work
Protect from frost attack
Allow scaffold poles to be placed on the plinth work
To allow excess mortar from the joints to drop from the work above
A site manager has identified an arch that requires re-pointing. A tower scaffold has been made available to access the work, where would the information relating to 'maximum load' permitted be found
Manufacturers information
Site diary
Materials specification
Variation order
Which of the following British Standards governs the production of technical drawings in the construction industry?
BS1142
BS1192
BS2142
BS2192
When a discrepancy is identified on a working drawing, what action should be taken?
Measure off the drawing with a scale rule
Ignore the drawing and build anyway
Discuss the measurement shown on drawing with the supervisor
Estimate the correct measurement
A brick bonded pier cap has been damaged by frost. In order to ensure the correct materials are used to rebuild the cap, which brick would offer BEST protection against frost?
Wire cut
Hand made sand faced
Class A engineering
LBC
When producing a full size drawing for setting out an axed semi circular arch, the voussiers are marked out on the;
Extrados
Skewback
Rise
Soffit
An architect has drawn the details of an arch required in a new three storey house, the architect has stipulated that the arch must be axed. What does this mean?
The bricks are cut with an axe
The bricks in the arch are cut to wedge shape
The joints between the arch are wedge shape
The bricks and the joints are wedge shape
When supporting an arch centre, what must be added to the supports to allow the arch centre to drop free and be removed?
Arch centres do not require supporting
Prop nailed to the arch centre
Wooden struts
Folding wedges
Which method would be used to ensure the accuracy of a small wall curved on plan?
Place the template at any point on each course
Use the template on the first and last courses only
Use a template at the setting out stage
Use a trammel at the setting out stage
Perpendicular joints on the face of a convex circular wall on plan must be plumbed on the face in order to ensure the:
Spaces between the joints are maintained throughout
Joints are plumb, correct size is maintained and in line as the work progresses
Spaces between small tight joints are maintained throughout
Correct size is maintained and in line as the work progresses and there is minimal wastage.
An obtuse bay window needs to be built in a house from foundation to DPC. What is the most effective process?
Lay first course, dry bond, set out with template, check gauge to DPC
Set out with template, dry bond, check gauge to DPC, lay first course.
Check gauge to DPC, dry bond, lay first course, set out with template.
Set out with template, lay first course, dry bond, check gauge to DPC.
Why is bonding brickwork correctly and accurately to an acute angle quoin important?
Strength, bond and accuracy must be maintained
It helps to rude the amount of cuts required
It reduces the need to level and plumb
It removes the need to gauge the brickwork
When removing the supports from a segmental arch centre, what action should be taken to ensure the safety of workers?
Loosen the props or folding wedges during the building of the arch
On completion of the arch, tighten the props or folding wedges to lift the arch ready to remove the arch centre
Once the brickwork in the arch has set slowly remove the props or folding wedges
Immediately after the arch has been built remove the props or folding wedges
PPE has been issued that is defective, what action should be taken?
Return to supplier, ask for a replacement from the supervisor and ensure defect is reported
Return to store and ensure defect is reported
Inform supervisor and get a view on whether it is still safe to use
Use it and report defect at the end of the day
When preparing to remove a damaged gauged semi circular arch that has failed, which process with H&S in mind, must be completed prior to work taking place?
Produce a risk assessment
Compile an estimate of the cost to repair
Receive a variation order
Obtain a permit to work
What is the MOST suitable and time efficient method of marking bricks ready to be cut for use on a axed arch?
Mark out each brick with a tape measure
Trim each brick to the trained eye
Make a template that can be placed on the brick
Lay all of the bricks in the arch and cut the last one to fit
What is the MOST effective method used for setting out an obtuse angle?
manufacturers template
Working drawing
Instructions from supervisor
Lines and pins
When calculating the bricks required for a circular wall, which formula would be used to calculate the measurement around the circumference?
π x D x D x D
π x R x R x R
π x R
π x D
