Barricades and Scaffoldings

Scaffolds

An elevated temporary work platform and its supporting structure used for supporting materials or employees or both

Supported, Suspended, Aerial Lifts/Scissor Lifts

The types of scaffolds are…?

Supported

Scaffold is hung with cord from the ceiling or top of a construction or structure

Suspended

A mobile scaffold that is suspended from ropes or cables. Also known as swinging scaffold

Aerial Lifts/Scissor Lifts

Are essentially elevated

Falls from elevation

can be caused by slipping unsafe access, and lack of fall protection

Struck by

from falling tools and debris

Electrocution

from overhead power lines

Scaffold collapse

often caused by instability or overloading

Bad Planking

may give way to materials or occupant load

Along the front edge, top rails, midrails, toeboards

Types of Guardrails?

Along the Front Edge

Of platform not more than 14 inches from the work. For lathing and plastering, a gap of 18 inches is permitted

Top Rails

should be no less than 38 and no more than 45 inches tall

Midrails

Should be placed halfway between top rail and platform. For construction work, midrails may not be spaced more than 19 inches apart

Toeboards

msut be 3-1/2 inches high. Open spacing between the toe board and platform cannot exceed 14 inches

Appropriate Construction

To control the risk of a scaffold falling or collapsing

Proper Access

Direct access to or from another surface. Ramps and walkways 6 feet above lower levels must have guardrails

Foundation

Scaffold poles, legs, posts, frames, and uprights must be on base plates and mud sills or other firm foundations

Supports

Platforms supported by legs, outrigger beams, brackets, poles uprights, posts, and frames

Restraints

Guys, ties, and braces must be installed at locations where horizontal scaffold components support both inner and outer legs

Barricades

An improvised barrier erected across a street or other thoroughfare to prevent or delay the movement of opposing forces

Soft Barricades and Solid Barricades

The types of barricades:

Soft Barricades

Are used to identify and protect personnel from general hazards and also those which are high risk and may pose a risk to life and health

Solid barricades

Is to provide a physical barrier capable of performing the same function as a permanent guardrail

Caution, Restricted Access, Electrical Work, High Voltage Testing, and Safety Requirement for lights

Methods of Barricading

Caution Barricades

tape shall be erected to inform personnel of an uncontrolled hazard within the barricaded area

Restricted Access Barricades

shall be erected to prevent unauthorized personnel from accessing the barricaded area

Electrical Work Barricades

is to be erected to prevent access to electrical hazards

High Voltage Testing Barricades

is to be erected around the item under test to provide a minimum safe approach distance

Safety Requirement for Lights

barricades are installed on roadways and will remain in place during hours of darkness