Owner Builder Exam | 302 Questions and Answers(A+ Solution guide)

At what depth of trench is shoring require / At what depth of an excavation is shoring required? - 1.2 M or 4 Feet How can shoring be done past 4 feet? - This can be done with purpose-built shoring, or, it is acceptable to use plywood if it is properly constructed. Which of the following is not an acceptable method for determining the correct grading for a trench? - experienced contractor says it's ok Before a worker enters any excavation over 1.2 m (4 ft) in depth or, while in the excavation, approaches closer to the side or bank than a distance equal to the depth of the excavation, the employer must ensure that the sides of the excavation are - (a) sloped as specified in writing by a qualified registered professional, (b) sloped at angles, dependent on soil conditions, which will ensure stable faces, but in no case, may the slope or combination of vertical cut and slope exceed that shown in Figure 20-1, (c) benched as shown in Figure 20-2, (d) supported as specified in writing by a professional engineer, (e) supported in accordance with the minimum requirements of section 20.85, or (f) supported by manufactured or prefabricated trench boxes or shoring cages, or other effective means. Which best describes the design principle of rain water deflection? - Design and construction which stops water from ever entering What lighting certifications are required in Canada? - CSA safety certificationWhat grit of sandpaper would get smoothest result? 150-180 etc. - The higher the grade, the smoother the finish. When finishing a surface, you typically start with a low grit and work up to a high grit. What is the maximum rise in a flight of stairs? a. The vertical height any flight stairs - The vertical height shall not exceed 3.7 M What is the minimum distance that a ladder must extend above a parapet wall or landing? - 3 feet If you have a 4m ladder, how far from the wall does the base of the ladder have to be? - 74 degrees or 4:1 ratio. So 4 m ladder, needs to be 1 m away. What heights are end dams to be on window and door flashings? - 25 mm / 1 inch (from BCBC) When to call for inspections and how to make them efficient as possible? - Group together when possible and call when work is complete When is an HRV required? - Almost always: "Effective December ϭε, ϮϬϭκ 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 [ε.ϯϮ.ϯ.ϯ." "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" What can you build under the owner-builder HPO process? - Single detached home under a single title. One single dwelling unit in or attached to a pre-existing building older than 10 years (includes the addition of a unit to convert a detached home to a duplex, or conversion of a duplex to triplex, or conversion of non -residential space