Dust designed to prevent major impacts on the human

Dust Management and Control

Definition:

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The Dust Management and Control program are employed during
construction, operation and decommissioning stage of the project. The plan will
be continuously reviewed and therefore may change in order to ensure that it
remains effective and relevant throughout the entire operational cycle based on
past achievements and technological advances.

Dust Management and Control at the construction site is
managed by the Climate Change and the Ministry of Environment. Some of the
construction projects might request ambient air quality monitoring if the work
is constructed near the urban areas. Partially effective dust management at the
construction site relate the direction and use of wind speed. Now we are seeing
more and more of the construction sites with weather stations to monitor
direction and wind speed. When the wind speed reaches a certain threshold, some
controls and managed can be placed on operations and oriented in a particular
direction (Nvironment, 2007).

Concept:

The Dust  Management
and Control Plan illustrate how suitable management  techniques 
will decrease the hidden any dust-related negative effect to the
environment or public health, and describe the methods that will be carried out
to control dust generated by the operation. This may include dust generated
from earth moving, construction, bulk material handling, storage activities,
vehicle movement and demolition (Regulations et al., 2014).

Purpose:

This Dust Management and Control is designed to prevent
major impacts on the human health, comfort and important environmental values
in the construction site. The main objective of this program is to develop a
strategy to control as much as possible and to escape or dust emissions from
the air on site. This will be done by determine specific activities and sources
that have the highest potential to generate or produce escape or dust emissions
in the air. The plan describes the construction controls essential to control
and reduce dust emissions from these activities and sources (Site Projects
Group, 2013).

Benefits:

?             Increase
productivity

?             Decrease
Road Maintenance

?             Decrease
Dust Emissions

?             Saving
money for clients

?             Protecting
nearby residents and workers

 

Person In Charge:

It is the operator’s responsibility to make sure that dust
emissions are all times managed effectively. If the major or emergency control
measures are not effectively controlled, decide by the Environmental Planning
Department, the Dust Management Plan must be modified and resubmitted for
approval (Regulations et al., 2014).

Strategy:

?             Reducing
the speed of vehicles on the construction site

In the internal enclosed roads, all vehicle speeds will be
maintained or lower than to the maximum speed limit which 30 km per hour to
reduce vehicle deceleration, thereby reducing fugitive dust emissions and offer
signage and obstructions to decrease vehicle movement on the road. In addition,
any vehicle leaving the job site will be use the hose down or wheel wash
facility to clean to prevent dust and mud transferring to the road. Moreover, all
trucks are loading fine materials will be covered when using public roads.

Figure 1.0: Maximum speed limit in construction site
(CBSlocal, 2012).

 

?             Wet
sweeping method

Stockpiles and unsealed roads will be sprayed as essential
with the substances such as lignin sulphonate, magnesium chloride or similar
control chemicals form an impermeable layer and under dusty conditions all the
unsealed roads will be actively watered. Keep water tankers driven on site
sprinkler the water to prevent dust from spreading in the air, especially in
dry weather. In addition, water will be applied at least three times a day by
using wet sweeping with chemical dust suppressants and attention will be paid
to the amount of water used and to prevent excess moisture that could cause
erosion problems. Moreover, where the accessible entrance is connected to the
highways, it is possible to track the materials such as fine and sand materials
onto the road. If the material is being tracked onto the road and the dust is
being created, then the road surface will be cleaned by using a wet vacuum
sweep with a circular brush basically fitted to side for cleaning and removed
the surface of the road (Procedures, Leslie and Quarry, 2014)

Figure 1.1: Water tanker in construction site (GMCO,
2017). 

 

?             Different
tool of construction

The more energy involved in work, the greater the risk.
High-energy tools such as grinders, grit blasters and cut-off saws generate a
lot of dust in a short amount of time, therefore we will use other work methods,
less powerful tools and different materials to reduce dust. In this project, we
will use the new system of on-tools extraction to cut wood, roof tiles and
concrete removal which can automatically remove the dust during the process.
The new system involves a vacuum connector system, three hammer shrouds and two
grinder shrouds that will fight dust inhalation related with chipping, drilling
applications and concrete cutting. This is a Local Exhaust Ventilation (LEV)
system that can be installed directly on the tool. This LEV system include of
several separate components like capturing hood, tools, tubing and extraction
units. Use extraction units to the proper specifications, for example  H represent (high), M represent (medium) or L
represent (low) filter units (Hse, 2013).

                Figure
1.2:  Grinder Shrouds and Hammer Shrouds
(Amstutz, 2012).

 

?             Material
handling process

For the material handling operations shall always maintain
the number of handling operations to minimum and make sure they do not move or
process unnecessary dust. Furthermore, when transport of aggregates or
materials will use sheeted or enclosed vehicles to avoid leakage and also
minimise the generation of airborne dust. In addition, as loading and unloading
procedures are implemented, the drop heights should be minimized and kept to a
minimum to prevent dust emissions from material handling. For the handling
areas should be always clean and dust-free (Kukadia, Upton and Hall, 2003).

 

1.0 Project
Meetings

Project meetings in construction projects are an
important side of good site management. Regular on-site meetings in various
forms between contractors, employers, suppliers, vendors and all those
associated with the contract works are the key to success. Project failures are
due to a lack of project management and one of the essential parts is lack of
proper and appropriate meetings between all related parties.

The objective of the project meeting is:

Ø  To review previous week’s progress of the work;

Ø  To review the potential problems and critical
operations;

Ø  Discuss expected progress in the coming weeks;

Ø  Coordinate the contractor’s interface with the
existing facilities.

 

1.1
Pre-construction Meetings:

The purpose of a pre-construction conference is to
assist in the preparation of the project by refining and briefly illustrating
the items required to be covered. Prepare this important meeting can use as a
checklist and reference documents. The pre-construction meeting should be
convened to introduce the parties involved in the construction stage and
introduce the sequence to be followed throughout the project. In addition, the
attendees should include all major parties during the construction stage,
including Owner, Contractors, Major Subcontractors, Design Project Manager and
Prime Consultant (Goh, 2014).

The main objective of the pre-construction meeting
is to set up an acceptable basic rule for all parties concerned. This meeting
will also help ensure that each of the contractor and subcontractor understands
the intact work requirements and coordinates the work to be done with the
maximum financial gain in the shortest amount of time. Pre-construction
meetings might be effective in reduce construction risks, for example:

Ø  Worker safety

Ø  Site safety

Ø  Inadequate documentation

Ø  Project cost overruns

Ø  Payment conflicts

1.1.1
Agenda

The Program Construction Manager will be setting the
agenda for the meeting. The agenda shall be offered for all pre-construction
meetings and transmit to all relevant parties with the meeting notices.  The contractor will need to prepare some items
for this meeting, so it is important to let the Contractor rational advance
notice in order for them to get ready those documents. If there are matters
that request extra study or documentation, set the target date for the written
or telephone answer.

1.1.2
Documents

In addition to the Contract documents such as
specifications and contracts, there are a lot of others standard documents used
during the construction phase. These involved transmission, clarifications and
amendments, submission and many other forms. Pre-construction meetings are the
best time to introduce these forms and their procedures to them.

 

1.2 Daily
Progress

The Daily report is prepared by the Project
Construction Manager. The aim of the report is to determine the day’s
activities, coordinate resources and examine status. The daily report should
record:

Ø  Date and day of the week

Ø  Available resources include staff, equipment,
resources of subcontractor and visitors

Ø  Potential future delays

Ø  Any environmental 
and safety relations incident

Ø  Weather conditions, for example, rainfall, wind
speed, temperature and the hours that couldn’t be worked due to bad weather

Ø  The main material received

 

1.3 Weekly
Progress

The weekly progress meeting is prepared by the
Project Construction Manager with the contractor to determine the status of a
project. The objective is to review progress made in the previous week, to
discuss expected progress during the coming weeks, and to review critical
operations and potential issues. 
Attendees shall include Contractor, Subcontractor, Design Manager, Field
Inspectors and other relevant parties as required and the meeting will be
conducted in Construction Meeting Office.

 

1.3.1
Progress Meeting Agenda:

Ø  Contractors shall note of their current staffing.

Ø  Discuss issues, material deliveries, site issues,
drawings submitted and approvals, construction conflicts and so on.

Ø  Identify the reason for the delay.

Ø  Confirm the place and time for the next meeting.

Ø  Discuss the status of the change order in progress.

Ø  Review the last meeting minutes and update status to
any outstanding issues.

Ø  Comment or Question period.

1.3.2
Minutes

The Project Construction Manager will be prepared
the meeting minutes within 3 days. Minutes will be provided to attendees.
Unresolved matters of previous meetings will be announced in prolog and remain
in the existing minutes until they are resolved.

 

1.4
Monthly Progress

The Monthly Progress Meeting  is executed by the Project Construction
Manager to address planning project. The monthly report particulars the
progress and should include the information necessary to make recommendations
for managing the project and keep an exact record of the implementation
process. Attendees involves the Contractor’s Project Manager, relevant Subcontractors,
Project Construction Manager, Administrative Specialist, Design Manager,
Scheduler, Senior Project Controls Specialist, Quality Control Manager and
Project Engineer. The meeting will be conducted at Construction Meeting Office.

1.4.1
Progress Meeting Agenda:

Ø  Review the Critical Path Schedule

Ø  1 Month looking forward to develop requirements for

§  Program / Schedule report

§  Inspection equipment

§  Cost and risk report

§  Procurement Activities

§  Submittals Critical Status

1.4.2
Minutes

The Senior Project Controls will be prepared the
meeting minutes within 5 days. Minutes will be provided to attendees.
Unresolved matters of previous meetings will remain in the existing minutes
until they are resolved.

1.4.3
Monthly Status Reports

Ø  Financial Schedules include cost
variances, claims
and payments.

Ø  Review
project or task updates from team members.

Ø  Discussion
of  potential risk matters and possible
solution.

Ø  Discussion
of work need to be done in this month and following month.

Ø  Discussion
of the critical matters.

 

2.0 Construction
Transportation Management Plan

 

The Construction Transportation Management Plan set up a coordinated set of transportation management tactics and
described how to use them to manage the work area that impacted of road
project. Transportation management tactics for a work area involves public
information, traffic temporary mitigation measures and operational strategies.

2.1
Objective:

The objective of this Construction Transportation
Management Plan is to offer the construction management group with a
description of the measures and exercise to be executed in order to minimize
the traffic and adverse effects of transportation relevant with this
construction project. The plan will also determine the considerations that will
be included in the Traffic Control Plan and approved by the state and local
jurisdictions. The CTMP offer particular information to comply with Mitigation
Measures which identified in below of this plan (Federal Highway
Administration, 2005).

Some
of the advantages of CTMP are to help:

·        
To facilitate
more effective and efficient construction staging, reduce contract duration and
contain costs.

·        
Increase public
awareness.

·        
Improve work
area safety for construction workers.

·        
Reduce
complaints from the public and local communities.

·        
Reduce the
effects on the mobility, circulation and access of local communities.

2.2
Main Access Point

The Construction Mangament Team will use the
Jalan Lagong as the primary access point, and there will be an additional
access point for truck to depart from the site to avoid congestion. An
informational sign will be set along these roads to instruct the construction
traffic and notify drivers of construction traffic that might result in temporary
delays. Traffic will stop in both directions within a short period of time before
oversized loads reach the access point, allowing the vehicle to be safely
diverted to access route.

 ?2.3 Mitigation MeasuresTo address the possible impact of increased traffic during the construction stage of the project, we will implement a series of mitigation measures as described in this section of the CTMP. These measures scope from execution of the contractor’s work process to construction of new infrastructure, benefiting communities outside the project’s construction stage. Unless otherwise specified, all the measures described in this part relevant to the construction stage of the project (TRC, 2016). The CTMP should involve provisions for the following:•    Fulfillment standard safety practices, involves placing appropriate barriers between work areas and transportation facilities, using traffic control equipment and placing appropriate signage.•    Use signage to guide all vehicle entry and exit through appropriate techniques in the construction area.•    Plan construction staff parking and transportation to the site.•    Restrict the vehicle to a safe speed based on published speed limits, weather conditions and road conditions.•    The timing of road and land closures.•    Worker commuting time and materials delivered to avoid peak hour time.•    Traffic roundabout detour or closed, should mark appropriate signage.•    Store all equipment and materials in the designated work area, maximize sign visibility and minimize traffic obstructions.•    Trucks routes to avoid the minor roads as much as possible to reduce congestion and potential damage to the asphalt.2.4 Traffic Management PlansThe Main Contractor will develop and comply with the Traffic Management Plan throughout the operation and construction stage of the project.Where suitable for ongoing activities, the contractor will determine the measures in its traffic management plan based on the following measures: •    Project road control and limitation;•    Speed restriction;•    Brake checking;•    Public security measures;•    Traffic control measures;•    Road maintenance;•    Traffic and access routes.2.5 Limit Road Closures and Maintain AccessLane closure shall not take place between 6a.m.to 9.30 a.m. and between 3.30 p.m. to 6.30 p.m. due to peak hours unless directed writing by a responsible public agency to issue an invasion permit. In addition, the department should coordinate with the school within 1000 feet of the construction site to ensure that entrances are not blocked during school hours. All temporary lanes and road closures should be informed to all residents within 300 feet at least 7 days before. During construction, lane access for residential community entrance should always be maintained. Moreover, in the event of a fire or other emergency in the site, steel plates should be laid in the underground work area and the construction equipment should be removed from some or all of the closed roads as required, to ensure unobstructed traffic.There is the strategy consists a TMP. Below is a list of the strategies and how to implement this strategy into the Pandora Residential Project. Construction strategies help to reduce congestion in the work area. The following is a list of strategies used in the project (California Department of Transportation, 2009):2.5.1 Traffic Handling PlansThe Traffic Handling Plans involve in the project plan offer detailed information on the signs are to be installed and the location of the placement through circuitous routes and work areas.2.5.2 Driver Information PlansThe Driver Information Plans show the location of each closed bypass and the detour route around the site of the location.2.5.3 All Facilities Are ClosedClosed freeways can increase workers’ safety and can shorten the project time. Only in the case of low traffic this method of closure is limited to the night. Provide alternate and bypass routes are closely managed and monitor.2.5.4 Night WorkMost of the work will be carried out at night to reduce the impact on neighboring businesses and the public. However, due to noise or temperature requirements, special work items that will affect surrounding residents at night so will be scheduled during daytime hours.2.5.5 Coordination with Neighboring Construction SitesThe ongoing project may affect the Pandora residential project. Coordination with the contractor will help to ease the conflict between the closure and the proposed bypass. With proper coordination and communication, conflicts in the work area may be resolved by the consent of all parties involved. A good example is that where one contractor select to work in a different work area or the contractor may agree to expand the main line closure to cover both work areas to resolve conflicts in the closure schedule.?Method Statement For Jump FormThe Jump form is a particular template for large vertical concrete structures. For structures that require seamless walls, jump forms will be an effective solution. In general, jump form systems include platforms and formwork for fixing / cleaning formwork, steel structures and poured concrete. This form can be supported itself on the concrete model and therefore it no need rely on the support of the building or other parts of the permanent work.Ordinarily, this jump form is made from steel. The concrete formwork is attached to the frame; may supported on the rollers. After pouring the concrete wall, the formwork is removed from the wall. Then, if using self-climbing formwork , the jacks will lift the frame, otherwise the crane will be used to lift to the next floor. This is usually a relatively fast process. Once the climbing formwork is in place, the formwork is closed and the next concrete wall is poured. The cycle continues, which takes usually three to five days. Faster time has been achieved. However, the limiting factor to faster  time is usually the construction of the floor, which is done as a separate process (Vijayaraja, 2013). In general there are three types of jump forms:Normal jump / Climbing form – units are alone lifted off the structure and relocated to the next construction with using cranes.Guided Climbing Jump – units also use cranes but generally provide more safety and control during lifting as the units stay anchored to or guided by the structure.Self-Climbing Jump – systems that do not need cranes because they climb the building up by hydraulic jacks or by jacking platform off recesses in the building structure. Multiple units can be lifted in one operation. Therefore, for our Pandora Residential Project we will use Guided-Climbing Jump Form as our formwork system to construct the building.The benefits of using Jump Formwork:•    Minimize labor times and increase productivity.•    Do not require extra support.•    Can withstand strong winds (increasing productivity on windy days).•    Reduce the use of scaffolding and temporary work platforms to reduce congestion.•    For each particular project, longer lengths can be obtained in combination with different sections.Schematic workflow for operating a climbing phase1st casting part1.    Use a concrete release agent and install one side of the formwork.2.    Mount the positioning points and also for the wind-bracing.3.    Place the reinforcement inside, then close the formwork and tie it.4.    Pouring the concrete for 1st casting part.5.    After pouring concrete, then start to strike and clean the formwork.6.    After that set the gang-form down on a flat surface, with the form-ply facing downwards.7.    Prepare the frmwork for the climbing operation. 2nd casting partSuspension of the platform into place on the suspension point:1)    Find out the suspension point.2)    Use a four-part lifting chain to lift the prepared working platform and lower it to the hanging point.3)     Secure the work platform with fastening bolts.?Formwork set-up and pouring 2nd concrete1.    Use a concrete release agent and install one side of the formwork.2.    Mount the positioning points, place the reinforcement inside, then close the formwork and tie it.3.    Pouring the concrete for 2nd casting part.4.    After pouring concrete then start to strike and clean the formwork.Formwork set-up and 3rd casting section1.    Suspended platform is installed.2.    Use a concrete release agent and install one side of the formwork.3.    Mount the positioning points.4.    Place the reinforcement inside, then close the formwork and tie it.5.    And then the 3rd part is poured.The climbing scaffold is get ready to raised to the next casting part.1.    First, prepare to suspension points, then use the pin (D16/112′) to fasten the prefabricated suspended platform to the vertical profile and secure with a 5mm spring pin.2.    Remove the wind bracing and connect the lifting chain to the suspension bolt of the vertical waling. 3.    Remove the fastening bolt from the suspension point, lift the entire unit with a crane and hang it on the suspension point, fix the climbing template to the hanging point with fastening bolts.4.    After that, install the wind bracing.5.    The second pin (D16 / 112″) is used to bolt the suspension profile of the suspension platform to the vertical profile and to fix it with a 5mm spring.6.    After that, the next casting section is poured and continue to raising up.Scaffold is raised to the next casting part.Travelling unit:1.    Connect the lifting chain to the hanging bolt of the vertical waling.2.    Fly the travelling unit to the working platform by crane.Formwork:1.    Join the lifting chain to the lifting bracket on the pre-assembled template.2.    Use the crane to transfer the template to the working platform.3.    Fix the pre-assembly template to the vertical walings with waling to bracket holders.4.    Fix the wood wedges on the multipurpose walings for better load transfer around the adjustment spindle.

 

 

 

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