J-1 Notes

Question 1

Explain how concrete can be a live load and then a dead load.

Answer 1

When concrete is being placed it’s a live load. When it has hardened to become part of the building, it becomes a dead load.

Question 2

BCBC What is the specified snow load for the roof of a 28’-wide house in Prince George?

Answer 2

(0.55 x 3.4) + 0.2 = 207 kPa

Question 3

BCBC What is the specified snow load for the roof of a 28’-wide house in Campbell River?

Answer 3

(0.55 x 3.3) + 0.4 = 222 kPa

Question 4

What is the combined live and dead load per square foot for a living room floor?

Answer 4

40 + 10 = 50 lb./ft(square)

Question 5

What type of stress is across the top of a beam?

Answer 5

compression

Question 6

What concern is there when a point load exists?

Answer 6

point loads cause to extreme compressive stress where they bear.

Question 7

What is “heavy construction” in regards to wood-frame house building?

Answer 7

house construction with increased dead loads due to concrete floor toppings and/or tile roofing.

Question 8

Example force of “Dead Load”

Answer 8

Concrete foundation, windows and doors, Drywall, siding,Gravity, and kitchen cabinets.

Question 9

Most common stresses on building.

Answer 9

Compression,tension,torsion,shear

Question 10

Describe Tension, Torsion, Compression, and Shear

Answer 10

Tension is Pulling force that acts to lengthen an object.
Torsion is the force caused when one or both ends of an object are twisted (torqued) in opposing directions.
Compression is
Shear is stress occurring when there are pushing or pulling forces acting in opposing directions on a solid component.
Horizontal Shear Horizontal shear occurs when the pushing or pulling forces are acting on a horizontal plane
Vertical Shear occurs when there are loads, such as those in a beam; acting on a supporting member such as a column
Diagonal Shear is when building components are under horizontal and vertical shear.

Question 11

Force acts on the bottom of a beam

Answer 11

Vertical or Diagonal Shear

Question 12

Force imposed on a building by a earthquake

Answer 12

Horizontal force

Question 13

Types/list of live loads

Answer 13

Static load
Repetitive load
Dynamic load
Wind,Rain,and Snow
Occupant live loads
Earthquake loads

Question 14

Wind loads create what pressure

Answer 14

Pressure differentials

Question 15

A load of repetitive action of a car

Answer 15

Repetitive load

Question 16

BCBC live load on residential occupancies

Answer 16

Check 4.1.5.3.
1.4 kPa

Question 17

BCBC specified snow load

Answer 17

Check 4.1.6.2