Major Work Activity B – Performs site preparation
Task B-5 Prepares site
Task Descriptor
Site conditions are extremely important to concrete finishers. They impact the timing and sequencing of many of the procedures involved in the concrete finishers’ work. Concrete finishers may perform site inspections before the preparation of the site can begin. Site preparation could include determining elevations and preparing the sub-grade prior to placing concrete.
B-5.01 Inspects site
Essential Skills
Document Use, Oral Communication, Thinking
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Performance Criteria |
Evidence of Attainment |
| B-5.01.01P |
identify site conditions and site problems |
site conditions and site problems are identified according to industry practices and CSA A23.1 |
| B-5.01.02P |
assess on-site services requirements |
on-site services requirements are assessed to meet the demands of the scope of the work according to the client’s instructions |
| B-5.01.03P |
report assessment of site conditions |
assessments of site conditions are reported to the client |
Range of Variables
site conditions include: access, weather exposure, moisture, temperature
site problems include: poor drainage, obstructions, utilities, rain water leaders
on-site services include: water, electricity, gas, cables (telephone, internet), sewage systems
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Learning Outcomes |
Learning Objectives |
| B-5.01.01L |
demonstrate knowledge of site inspection procedures and factors that impact site preparation |
describe site conditions required for site preparation |
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describe site problems that affect site preparation |
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describe site inspection procedures |
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identify reporting procedures |
Range of Variables
site conditions include: access, weather exposure, moisture, temperature
site problems include: poor drainage, obstructions, utilities, rain water leaders
B-5.02 Prepares sub-grade and elevations
Essential Skills
Numeracy, Thinking, Working with Others
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Performance Criteria |
Evidence of Attainment |
| B-5.02.01P |
place base materials |
base materials are placed to a uniform sub-grade level according to drawings and specifications |
| B-5.02.02P |
compact base |
base is compacted according to drawings and specifications using equipment |
| B-5.02.03P |
install moisture and insulation barriers, filter fabric and void forms |
moisture and insulation barriers, filter fabric and void forms are installed according to drawings and specifications |
| B-5.02.04P |
check elevation |
elevation meets specified level according to drawings and specifications and CSA A23.1 |
Range of Variables
equipment includes: compaction rollers, plate tampers, jumping jacks
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Learning Outcomes |
Learning Objectives |
| B-5.02.01L |
demonstrate knowledge of sub-grade preparation procedures and requirements |
identify types of base materials |
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identify equipment used to compact base materials |
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describe procedures used to compact base materials |
Range of Variables
types of base materials include: gravel, clay, sand, recycled crushed concrete
equipment includes: compaction rollers, plate tampers, jumping jacks
Task B-6 Uses formwork
Task Descriptor
Concrete finishers use formwork to hold and mould concrete or grout in place while the surface is being worked. They may be responsible for the construction of concrete formwork and the removal of formwork once the concrete or grout is set. They will install construction, expansion and isolation joints with formwork as a permanent fixture of the concrete. These joints are often filled with self-levelling caulking or other compounds.
B-6.01 Constructs concrete formwork
Essential Skills
Document Use, Numeracy, Thinking
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Performance Criteria |
Evidence of Attainment |
| B-6.01.01P |
perform layout |
concrete formwork is laid out according to drawings and specifications |
| B-6.01.02P |
place formwork |
formwork is placed according to drawings and specifications |
| B-6.01.03P |
install bracing and shoring |
bracing and shoring is installed to achieve plumb, level and square formwork and to secure critical areas according to drawings and specifications |
| B-6.01.04P |
apply products prior to placement of the slab |
products are applied to serve as a soil, gas (radon) and vapour barrier according to drawings and specifications, and local codes |
| B-6.01.05P |
install formwork components |
formwork components are installed plumb, level, straight and square, and accessible for finishing work according to drawings and specifications |
| B-6.01.06P |
measure for location and install embeds |
location is measured and embeds are installed according to drawings and specifications |
| B-6.01.07P |
install formwork for grout |
formwork for grout is installed according to manufacturer’s instructions |
| B-6.01.08P |
apply form release agents |
form release agents are applied according to manufacturer’s instructions |
| B-6.01.09P |
apply vertical retarders |
vertical retarders are applied to achieve architectural finish according to drawings and specifications |
Range of Variables
layout includes: squaring, setting grades, establishing and transferring of elevations, setting perimeters
critical areas include: corners, risers, thickened edges, bulkheads
products include: polyethylene, insulation (rigid foam, spray foam)
formwork components include: reinforcement steel, keyways, water stops, bulkheads, screed level pegs, form liners, miscellaneous inserts, cambers, chamfer strips
embeds include: anchor bolts, sleeves, weld plates
architectural finishes include: exposed, form-lined
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Knowledge |
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Learning Outcomes |
Learning Objectives |
| B-6.01.01L |
demonstrate knowledge of formwork and its application |
identify types of forming systems and their applications |
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identify types of structures that require formwork |
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identify local codes, building codes, regulation requirements and CSA standards related to formwork |
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identify formwork components |
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identify form release agents |
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describe expansion, control and isolation joint construction pertaining to formwork |
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describe the types of forces transmitted during placement of concrete |
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identify critical form areas to prevent form failure |
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identify type of formwork required for various grout applications |
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identify types of vertical architectural finishes |
| B-6.01.02L |
demonstrate knowledge of procedures used to construct formwork |
describe procedures used to layout and install formwork and embeds |
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describe bracing, shoring and supporting used in constructing formwork |
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describe calculations related to constructing formwork |
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explain the building and removal sequence of formwork |
Range of Variables
forming systems include: snap ties, cam lock and tie rods, slip forms, insulated concrete styrofoam forms, she-bolts, steel forms
types of structures include: slabs-on-grade, curbs, gutters, stairs, walls, columns, suspended slabs, ramps, capitals, piers, pilasters, beams, girders, corbels
formwork components include: reinforcement steel, keyways, water stops, bulkheads, screed level pegs, form liners, miscellaneous inserts, cambers, chamfer strips
architectural finishes include: exposed, form-lined
layout includes: squaring, setting grades, establishing and transferring of elevations, setting perimeters
embeds include: anchor bolts, sleeves, weld plates
calculations include: rise and run, Pythagorean Theorem formula (3-4-5 calculations), form estimations
B-6.02 Installs reinforcement
Essential Skills
Numeracy, Thinking, Document Use
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Performance Criteria |
Evidence of Attainment |
| B-6.02.01P |
identify reinforcement to be used |
reinforcement is identified according to drawings and specifications |
| B-6.02.02P |
install reinforcement |
reinforcement is installed using proper equipment according to drawings and specifications |
Range of Variables
reinforcement includes: rebar (metal, galvanized, epoxy coated, fibreglass), welded wire mesh, synthetic and steel fibres, pre- and post-tensioning cables
equipment includes: drills, rebar cutters, grinders, mixers, tie wire, pliers, twisters, wire cutters, chairs, bar couplers
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Learning Outcomes |
Learning Objectives |
| B-6.02.01L |
demonstrate knowledge of reinforcement installation |
describe types of reinforcement |
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describe types of reinforcement installment procedures |
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identify codes, drawings and specifications related to reinforcement |
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identify equipment required for the installation of reinforcement |
Range of Variables
reinforcement includes: rebar (metal, galvanized, epoxy coated, fibreglass), welded wire mesh, synthetic and steel fibres, pre- and post-tensioning cables
equipment includes: drills, rebar cutters, grinders, mixers, tie wire, pliers, twisters, wire cutters, chairs, bar couplers
B-6.03 Inspects formwork and reinforcement
Essential Skills
Document Use, Oral Communication, Thinking
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Performance Criteria |
Evidence of Attainment |
| B-6.03.01P |
inspect bracing, shoring and supports |
bracing, shoring and supports meet formwork design according to drawings and specifications |
| B-6.03.02P |
identify defects in formwork |
defects in formwork are identified and reported or corrected according to industry documents and practices |
| B-6.03.03P |
check formwork finish grade |
finish grade of formwork is prepared according to drawings and specifications |
| B-6.03.04P |
inspect reinforcement placement |
placement of reinforcement meets specified locations according to drawings and specifications |
Range of Variables
defects include: inadequate bracing, crooked or unleveled formwork, improper grading, form deterioration, splinters
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Learning Outcomes |
Learning Objectives |
| B-6.03.01L |
demonstrate knowledge of formwork inspection procedures |
explain camber, deflection and shrinkage as they pertain to the construction of formwork |
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identify use of forming systems |
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explain codes, specifications and regulations pertaining to formwork |
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explain procedures used to install formwork to finish grade |
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identify reporting procedures for the inspection of formwork |
Range of Variables
forming systems include: girder form systems, structural forming systems, bulkheads, steel forming systems, curb and gutter, insulated concrete forming (ICF) system
B-6.04 Installs construction, isolation and expansion joints
Essential Skills
Thinking, Document Use, Numeracy
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Performance Criteria |
Evidence of Attainment |
| B-6.04.01P |
plan where joints are to be installed |
plans for joints are laid out according to industry documents and practices |
| B-6.04.02P |
install joints and joint components |
joints and joint components are installed according to type of joint, manufacturers’ instructions, drawings and specifications |
| B-6.04.03P |
maintain finished elevation |
finished elevation meets requirements according to drawings and specifications |
Range of Variables
joint components include: dowels, keyways, expansion materials
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Knowledge |
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Learning Outcomes |
Learning Objectives |
| B-6.04.01L |
demonstrate knowledge of isolation, construction and expansion joints and their application |
describe the types of joints and their applications |
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identify codes, specifications and regulations pertaining to the installation of construction, isolation and expansion joints |
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describe the types of joint components and their applications |
| B-6.04.02L |
demonstrate knowledge of installation procedures for isolation, construction and expansion joints |
describe the installation procedures for isolation, construction and expansion joints |
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describe the installation procedures for joint components |
Range of Variables
joint components include: dowels, keyways, expansion materials
B-6.05 Removes forms
Essential Skills
Thinking, Working with Others, Oral Communication
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Performance Criteria |
Evidence of Attainment |
| B-6.05.01P |
recognize adequately set concrete |
concrete is determined as adequately set according to site conditions and type of finish |
| B-6.05.02P |
execute removal of formwork |
removal of formwork is executed according to industry documents and practices |
| B-6.05.03P |
clean, repair and remove foreign objects from forms for re-use |
forms are cleaned, repaired and foreign objects removed for re-use according to industry documents and practices |
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Learning Outcomes |
Learning Objectives |
| B-6.05.01L |
demonstrate knowledge of procedures used to remove forms |
describe form and bracing removal practices |
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describe form removal requirements |
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explain proper form removal timing as per concrete application |
| B-6.05.02L |
demonstrate knowledge of procedures used for the re-use of forms |
describe proper cleaning, repairing and removal of foreign objects procedures for the re-use of forms |
- Date modified: