Ladders and Scaffolds

Question 0

Site built ladders 5 m or less must have side rails at the bottom must be at least _____ mm. And the rungs must be at least _____ by _____ material.

Answer 0

500 mm

21 by 89

Question 1

If a site built construction ladder is 5 m or less in unsupported length, it must have side rails composed of a material not less than _____ by _____ mm

Answer 1

38 x 89 (2x4)

Question 2

Site built ladders in unsupported length must have side rails composed of _____ by ______. The width between side rails at the bottom must be at least ______. Rungs evenly spaced between _____ and _____ on centre.
Side rails are not notched T or F?

Answer 2

38 by 140
500 mm
250 and 300 mm.

T

Question 3

Two-way construction ladders must have 3 ___________ rails, ____ by ____ rungs, with _____ by _____ filler blocks between the rungs.

Answer 3

38 by 140, 38 by 89, 38 by 38

Question 4

Two way construction ladder rails should be at minimum ______ metre apart, have every spaced rungs at not more than _____ on centre.

Answer 4

1 metre, 300

Question 5

A ladder should have this ratio?

Answer 5

4:1

Question 6

What type of ladder is best suited for working near electricity or overhead power lines?

Answer 6

Fibreglass (non-conductive)

Question 7

An extension ladder should be set at this angle?

Answer 7

75 degrees

Question 8

What is the extra heavy duty ladder rating…

And maximum weight allowed?

Answer 8

Type 1A, 300 lb (136 kg)

Question 9

What is a light duty and maximum weight for light ladder?

Answer 9

Type 3, 200lb (91kg)

Question 10

What are the two types of scaffold systems?

Answer 10

Elevating working platforms

Frame scaffolds

Question 11

How are frame scaffolds joined together?

Answer 11

With cross braces, connecting pins, bases, brackets, and guard rails.

Question 12

The most common frame widths are?

The most common frame heights are?

Answer 12

0. 914 to 1.524

1. 524 to 1.981

Question 13

An employer shall ensure the load to which a scaffold is subjected at no time exceeds the equivalent of ____ of the load for which it is designed.

Answer 13

1/4

Question 14

A scaffold is designed and constructed to support at least _____ times the load that may be imposed on it.

Answer 14

4

Question 15

A scaffold is anchored by one tie for each ____ vertical interval and one tie for each ____ horizontal interval.

Answer 15

4.6, 6.4

Question 16

The height for a free standing or rolling scaffold is not more than ____ times the smallest dimension of its base.

Answer 16

3

Question 17

A worker shall not remain on a rolling scaffold unless the height of its work plat form does not exceed _____ the shortest base dimension

Answer 17

Twice

Question 18

A guardrail is required whenever the height of a temporary work platform is _____ or greater.

Answer 18

3.0 metres

Question 19

A guardrail must have a horizontal top member that is not less than ____ nor more than ______ above the base of the guardrail.

Answer 19

0. 92

1. 07

Question 20

A guardrail must have vertical members at both ends of the horizontal members with intermediate vertical supports that are not less than _____ apart o.c.

Answer 20

3 m

Question 21

A toeboard required by regulation is not less than ______ I’m height above the surface of the work area.

Answer 21

140 mm

Question 22

A toe board must be installed where there may be worked below a permanent floor, mezzanine, walkway, ramp or other surface where guardrail a have been installed or where it is possible for materials to fall ____ or temporary scaffold or work platform where it is possible for materials to fall more than _____

Answer 22

1.8, 3.5

Question 23

A scaffold plank is constructed of at least number one grade ______ lumber with a wave limited to ____% of the width of the wide face of Plank.

Answer 23

51 x 254, 20#%

Question 24

A scaffold plank shall not span more than ____ on a light duty scaffold or _____ on a heavy duty scaffold.

Answer 24

3.0 m, 2.3 m

Question 25

A scaffold plank should not extend less than ____ mm nor more than _____ beyond a ledger.

Answer 25

150 mm, 300 mm

Question 26

An employer shall ensure that all scaffold platforms are at least _____ wide for light duty and at least _____ wide for heavy duty scaffold.

Answer 26

500 mm, 1 m

Question 27

With a free standing or rolling scaffold, where outriggers are used to attain a ______ to one ratio, they must be firmly attached.

Answer 27

3

Question 28

At least how far must a ladder project above a platform?

Answer 28

1m

Question 29

Rungs for construction ladders must be solid lumber. T or F

Answer 29

T

Question 30

The width between side rails at the bottom of a construction ladder must be at least _____ mm.

Answer 30

500 mm