As construction activities are high risk activities which has a huge sum of investment, construction safety is very crucial. Activities
like construction, repair and renovation are all hazardous when safety is not
applied. Some of the accidents that typically occur in the construction
industry is falling from a height, being affected by heavy construction equipment,
poisonous gases and dust in the eyes and mouth.
Construction Safety Standard in Nepal
In Nepal, the standard related to
construction safety is NBC: 114- 1994. This standard highlights fundamental
provisions related to construction safety Standard
We note safety standards related
to escape from fire, escape from harmful chemical, Excavation works , construction
of foundation, walls and roofs, construction safety for use of explosives in
construction works, and safety during demolition right here.
Construction Safety against Fire
- For safety against Fire, the
requirements of firefighting equipment must be done as designated by fire safety
engineer.
- Electrical power lines and
circuits must be cut off before the beginning of demolition activities in all construction
sites.
- Nepal Fire Safety Standard must be followed for determining the number of fire escapes on all sites. A minimum of one fire safety escape should be provided.
- For building sites over four
storeys, there must be two fire safety escapes. For large buildings, there must
be one fire escape for every 500 square meters of plinth area addition.
Construction Safety during Excavation Works
The following rules should be
followed for construction safety in excavation works
- If the trench is deeper than one
meter, then at least one escape should be made for every 20-meter length of
trench.
- For every work underground,
oxygen mask must be compulsorily provided.
- Some measures should be taken to protect
service lines during excavation works.
- Loose materials should not be
left in the cut slope.
- Physical guards and barriers must be provided for excavations made with mechanical equipment.
Construction Safety during construction of Foundation
- The type of foundation should be
adopted so that it will allow safe construction practices for site workers and
for the neighboring properties.
- The construction material and
method should not harm in any way the health of the workers and the neighbors
of the construction site.
- For driving piles, the adjoining
properties must first be reinforced so that their foundation will not be having
any impact under any conditions.
- Shoring must be done so that accidents doesn’t happen when constructing deep foundation.
Construction Safety during Construction of Walls
- If the height of wall is above
five meters, suitable scaffolding with protection against horizontal motion
must be provided at suitable height which prevents any accidents to
construction workers.
- Walking on top of freshly laid
brick wall should be prohibited for construction workers.
- Doors and window frames must be
protected using ropes on both sides during the construction of wall.
- If there is a public welfare
space adjoining the construction site, a canvas covered guard must be provided
throughout the adjoining wall and also up to an extra 1.2 meters length.
Construction Safety during Construction of Roofs
- If the slope of the roof is more
than 30 degrees, safety belt must compulsorily be provided.
- Workers should not be compelled
to walk without protection in asbestos cement sheet.
- Loose tiles should not be kept in
the roof. It must be kept in the scaffolding or horizontal working platform.
- The workers should not be made to
walk over the reinforcement. There must be platform for walking over the
reinforcement.
- Railing or protective guarding must be provided on all roof edges to prevent construction workers from falling.
Construction Safety for use of Explosives in Construction Works
- The blasting areas must be properly
guarded and marked for blasting.
- Explosives must be used only
after taking the necessary permission from concerned government authority of
Nepal Government.
- Audible signal must be given
before doing the actual blasting.
- People and animal must be removed
from the blasting scene when blasting is about to happen.
- Records of all blasting works
along with the quantity of material used must be kept by the construction company or general contractor who is conducting the explosion works.
- Unused explosives and detonators
must not be kept at the site.
- Blasting works must be conducted
by the company under the supervision of blasting agency.
Construction Safety Laws in Nepal
Labor law such as Labor act 2074
has got many provisions related to Construction Safety of labor. Some of the
provisions are
- No labor should be compelled to
work overtime.
- No labor should be compelled to
work in places where there is occupational health hazard of any form.
- The employer must form a Safety and health committee if his construction firm has got more than 20 construction workers. The representation of labor in the committee is a must.
- No employee of a construction
firm should be taken any act when he or she reports the failure to implement
the construction safety at the site to the concerned authority.