Questions Flashcards
- At what depth of trench is shoring require / At what depth of an excavation is shoring required?
a. 1.2M (4 Feet)
- Which of the following is not an acceptable method for determining the correct grading for a trench?
. A) An experienced excavator says it’s ok
- Which best describes the design principle of rain water deflection?
a. Design and construction that prevents water from ever entering
- What lighting certifications are required in Canada?
a. CSA safety certification
What is the maximum rise in a flight of stairs?
a. The vertical height any flight stairs shall not exceed 3.7m (from the BCBC)
- What is the minimum distance that a ladder must extend above a parapet wall or landing?
3ft
- What heights are end dams to be on window and door flashings?
a. 25 mm / 1 inch (from BCBC)
- When to call for inspections and how to make them efficient as possible?
a. Group together when possible and call when work is complete
- When to call for inspections and how to make them efficient as possible?
a. Group together when possible and call when work is complete
- WhenisanHRVrequired?
a. Almost always:
“Effective December , residential dwelling units, such as houses, apartments and secondary suites will be required to have
a principal ventilation system that exhausts air from bathrooms and kitchens and supplies fresh air to bedrooms and living areas
[....”
“Some small dwelling units in mild climates are permitted to supply fresh air through passive vents [9.32.3.4.(6)], but for most
dwelling units exhaust and supply will require a mechanical fan”
- Whatcanyoubuildundertheowner-builderHPOprocess?
Which of the following is not allowed under the HPO owner-builder program? [Answer was new dwelling unit attached to building newer than 10 years old]
Who issues permits for a gas fireplace
Safety authority now called technical safety bc
Can an owner builder take out his own electrical permit?
Yes up to a 200 amp service is allowed
What is the best practice to apply ash fault waterproofing on the foundation
Spray on her roll on dry foundation with 2 inch maximum below grade
What do you need to do when applying a peel and stick waterproof membrane foundation?
Using approved primer before installing
Questions about gas metre placement
Gas meter has to be farther from the roof line than the overhang of the roof nothing within 1 m on either side of it and 4.5 m above it and any powered air intake have to be within 3 m
When do you need to install a handrail or have worker fall protection?
10 feet above grade
How high does a construction fence need to be around a site
6 feet
When installing the footer it was dug down to inches deeper than what is elevation should be what needs to happen?
Install the footing form a proper elevation and fill with extra concrete
When installing flashing for roof Valley how much do the Asheville shingles need to overlap?
6 inches
What would cause a blister and a flat roof?
Moisture trapped under the roof
Water is backing up in a skylight what do you do to fix it?
Clear drainage
What needs to be done first one starting to install Ashfall shingles on a roof?
Install eve protection
What kind of fastener can you use in a word that has been treated with chromated copper arsenate?
Lumber manufacturer approved fastener
When should there be an insulation under a basement slab
When there is in floor heating or it is above the frost line
How deep should the control joint be in a concrete slab?
1/4 of the slab depth
What type of insulation should be installed under a slab?
XPS
What type of insulation has the least moisture permeability
XPS extruded polystyrene
When framing a header of a staircase the framer needs to know the nailing pattern where does he get it?
Use the BC code section 9 nailing pattern for the headers
What document must the owner submit to work safe BC prior to starting construction?
Notice of project
What is the nailing /screw pattern for backer board?
Manufacture approved pattern
When installing a bifold door, the door blinds at the side jam on the top what can be done?
Adjust the top pivot point
What should be done with Joyce and beans have contact with bare concrete wall?
Use pressure treated wood and leave 12 mm airspace
What is the minimum death for a beam support (beam pocket in foundation wall)
Not less than 89 mm, 3 inches
When is the footing needed?
Footing is needed when a wall is loadbearing
When fitting a casement window the window will not close all the way, what do you do?
Ensure casement is plump and square
What is the moisture permeability of 6 mil poly
0.03 US perm or 1.7NG
New fireplaces come with an air box around the fire box what is it for?
Provides more control distribution of heat
Refer back to question 39
When can work safe BC authority come to your construction site?
Anytime
 The moisture content of framing lumber at time of installation must not exceed what percentage?
19%
What is your liability for subcontractor on your site?
If you are acting as the prime contractor in the construction of your own home, you are subject to the health and safety provisions of the Workers Compensation Act and may be required to register with Work Safe BC. Learn about rights and responsibilities for workplace health
and safety. Be sure to get a clearance letter for each contractor to make sure they’re in good standing with Work Safe BC; otherwise you could be held jointly liable for any unpaid Work Safe BC insurance premiums if the contractor you hire does not pay their premiums during
the period they worked for you. Learn about responsibilities for contractors and subcontractors.
What is the diverting flashing and where is it used?
At the end of an intersection between a roof and wall to direct water away from a vertical wall
What is the best way to build a watertight wall?
Use rain screen
Can you sell an owner built house?
After the first year of occupancy or with special permission from HPO
Can you transfer your owner built house to a family member in the first year?
No you must occupy the house for one year unless given special permission from the HPO
If you are a building a room 12‘ x 9‘ and you draw a diagonal line between two corners to see if the room is square how long would the line be?
15 feet
How far above the chimney can the flue liner protrude
The flu liner can protrude a minimum of 50 mm
Know the correct chimney clearance
2 feet above the highest point if it is within 10 feet of the highest point
New bathroom fan code for ventilation?
Every dwelling unit shall be equipped with a principal ventilation exhaust fan or ducted central ventilation system provided a minimum ventilation.
An exhaust fan with a minimum ventilation rate in every kitchen and every bathroom or water closet with minimum ventilation rate
What is the risk of installing a 600 CFM or larger fan?
Negative pressure dog
Appropriate location for water heater?
Recommended that the water heater is located near the greatest hot water usage to prevent heat loss through the pipes. It is also recommended that it is located where the water lines are not subject to freezing temperatures
What is the code pertaining to insulation between me and home and garage?
Garage is considered unconditioned space even if he did because the garage doors can open. Air barrier and insulation is required between the main living areas through an external wall and in the ceiling if there is condition space above the garage. Fire rated walls and ceiling may be required if there is a secondary suite. Insulation and vapour barrier as if garage or exterior spaces.
When do you call for an electrical inspection?
Before any wiring is concealed Or When you have a temporary electrical pole.
An electrical contractor fails an inspection what must the electrician do?
Fix problem and call for reinspection
When do you need a chimney saddle?
When upper side width of chimney is 750 mm or more
What must you do before starting to build?
Notify work safe BC 24 hours in advance
How high must a ladder protrude above a 4 foot trench?
3 feet
Why keep a work safe free of debris etc.?
To protect inspectors in safe efficient workplace
What shows hidden objects and blue prints?
Dashed line
What square best to use to transfer 35° slope from plans to work
Use sliding T bevel
How much support is news for floor Joyce into a footing?
1.5 inch minimum for floor joists and hangers are not typically 3.5 inch deep for beams 3.5 inch
What is one method that can be used to prevent new concrete from freezing in cold weather?
Insulated tarps
Why must concrete cure?
To reach peak strength
Went to order an inspection for external sewer line?
Loaded pipe on 6 inches of sand and before backfill
Went to inspect insulation?
After insulated but before covering/boarding, vapour barrier is part of the insulation system
When can you put up exterior house wrap?
After framing inspection but before insulating
What must of gas fitter do when a gas system insulation has been completed?
fix a tag with their name is certificated number type of appliance and date.
We’re not to put electrical meter?
At least 1 m away from a gas metre
When locking out of a circuit you must?
Shut off, tag, and lock
For I-beam construction what do you do for nailing patterns?
Refer to manufacturers or engineers instructions.
Who is responsible to ensure that the electrical contractor is performing work safely on site?
Owner builder
When not to install vapour barrier
If insulation is wet
How to measure wood moisture?
Moisture metre
Which of the following is not a characteristic of housewrap
Is vapour proof
What is the minimum gap for rain screen?
10 mm
When strapping vertical siding?
Put vertical straps on wall with horizontal on second
J What is the best practice eavestrough hanger spacing
36 inches or 18 inches for colder climates
Why is an end dam used on window flashing
To hinder water flow behind siding
What to do if window top is 16 inches down from a 24 inch overhang
Install header flashing
Worst underlayment for bathroom tile floor
Particleboard
Best type of flashing to use
Will last the lifetime of the surrounding materials
Hood fans for ranges should be based on?
The air exhaust volume intake air volume needed and clearance restrictions
Hey of railings above 2 feet
36 inches interior and 36 inches exterior unless it is above 6 feet then is it required for a 42 inch railing
Stair rise maximum
200 mm
When sheathing it should be
Staggered
If Joyce in subfloor are faulty?
\ Add blocking
HRV questions about distance between external In-N-Out vents
6 feet
Window CSA coding does not designate?
What type of window
When and why to use a saddle above a chimney?
Use a saddle when your chimney is protruding from a sloped roof and is greater than 750 mm in width. Use it to divert water away from the top edge of the chimney to prevent water damage
Ken-an owner builder pull a permit for plumbing?
Yes owner builders can pull up plumbing permit provided they do not possess a tradesmen certification as a plumber
Which product is used before applying latex paint to new drywall?
water-based primer sealer
Very weird question about exterior and interior barriers with complex choices like permeable waterproof water resistant Impermiable in various combinations
Exterior wraps are typically called WRB or weather resistant barrier they are water resistant to bulk rain but will allow moisture to diffuse through vapour barriers which goes on the warm side of the wall should I have low permeability 1.7 SI perms know that housewrap is not vapour proof
Somehow efficiency windows have gas injected between the panes what is the gas?
Argon
Storage materials that are hazardous are combustible, corrosive, toxic etc. Should be safely stored where can they be stored?
In their approved containers inside of a locked room
What is used to prevent mitre joints from opening?
Biscuits and silicone baby