what is the scale on drawings ( module 4) ✔️1/4 inch
what is a green building ✔️grey water systems, heat exchange, low flush toilets, solar hot water, and
vaultoaeic collectors on roof
What is a letter of assurance ✔️uniform mandatory document intended to clearly identify
responsibility of key individual
numbers for live loads:
1. what is a live load on a floor
2. what is the live load on a balcony and deck
3. what is the live load in attic ✔️1. 2.4 kpascals
2. 1.9 kpascals
3. .35 kpascals
at what height is fall protection required ✔️10 feet or 3 meters
or if hazardous rock or near cliff below
what is guardrail height ✔️40 - 44 inches above work surface + midrail + toerail
what is slope rule for ladder ✔️4-2-1
4 meters high, one meter from wall or support
CSA approved ladder **
, how far past point of contact does a ladder need to extend ? ✔️3 feet
what is letter of assurance ✔️uniform mandatory document highlighting key roles and who is
responsible for design, inspection, or review ( they sign off and stamp it)
i.e engineer
what is typical truss spacing ✔️in residential structures : 24 inches
what is ideal humidity inside the home? ✔️50-60%
at what depth do trenches need shoring ✔️greater than 4 feet ( 1.2 m)
what is horizontal distance between cables and gas lines? ✔️12 inches or 300 mm
how deep is gas line and what is minimum clearance above and below ( for other lines)? ✔️6 inches
deep
minimum clearance 2 inches above and below
what is concrete strength needed for:
1. footings, foundation, slab on grade
2. basement floors
3. exterior walkways, driveways, garage carport ✔️1. 15 m pascals ( megapascals) , 2176 PSI
2. 20 m pascals, 2900 PSI
3. 32 mpascals, 4640 PSI