Building Construction Flood Control

Flood Control System – Usage of Lift Station

Lift station can be used as a powerful flood control system. Lots of people has been utilizing it within their housing applications, as a result of amazing services it gives you. However, more often than not, it’s found in commercial buildings. If you are employing a lift station, the pump should have to collect all waste water from your building or house, it doesn’t matter how much it rains.

If you are installing this kind of flood controller system in the building, you need to locate a pump in a basin. This can discharge the lake in to the sewer line and direct it on the municipal sewer line. If you are installing a flood control system your own house, it is vital to set up and gaze after it correctly. Installing the proper control system may also defend your property against sewer backing from city or perhaps the village sewer main. When you’re by using this  flood control system  at your house ., it is vital to administrate it properly.

Floods won’t only causes possessions damage, but in addition put your family’s life in peril. Therefore, it is vital to choose the best form of flood control system by considering your local area. For example, if you’re residing in a coastal area, you might need several types of flood systems and lift stations.

Whatever the case, in case you are incapable of find the appropriate form of lift station needed for your property, using the assistance of your expert is the most suitable choice to suit your needs. They will think about the kind of house, location, environment etc and allow you to pick the best  flood control system  to suit your needs and budget. Contemplating these above-mentioned factors will assist you to pick a qualified kind of system to your home.

Flood Control

Disaster Management Plans

 Disaster management plans  is an important to overcome or minimize the risk when the accidents taken place. The objective of plan will be aware and training of people to be safe prior to accidents happened. Recreation and rebuilding of the society will be easy with good management plan.

It is an important to have disaster management plans considering all above factors. Developed information base, various group of peoples , different ages, on various locations have to work together to mitigate effect of the disaster. That will be necessary to work  together minimize the impact from the sudden disaster. The people need to take actions according to integrated emergency plans while on the disaster.

Value and scale , distribution of awareness programs are the main factors of any disaster management plan, That will be definite plan to increase awareness among the people and which accidents can take place. Risk of the disaster can be reduce with these important factors.

Recently, public awareness programs are conducted and developing all over the nations and every social network. etc.  Public Locations, Schools, Varsities and Colleges are oriented for the these awareness programs. They will help to collect foods, cloths, water bottles etc. for victims. as well as, Many of the business networks like telecommunications and government channels are held these awareness programs to help people as many as possible.

The disaster can be either natural or man made hazards. Risk and danger are the main events of hazard and people need to realize maximize the mitigation efforts. Every single people need to understand these  programs are, how much important when disasters are taken place. .

Society and Financial condition of the any country or territory, will significantly affect when these disaster management plans conduct. The professional  of these programs plans are highly recommend, these plans are directly manage with peoples justice, infrastructure as well as public awareness

Most important factors of plan can be summarized to four major groups, and are readiness, minimization, response as well as recovery. Preparation  of the plans are done by the professional on this subject based on details of previous disasters occurred. Mitigation methods can be improve with various research details and technology that can apply.

Recently, Media has been doing significant role on disaster management like advertisements, collecting donations, showing the seminars and workshops etc.. to aware risk and danger of the disaster. Government channels also help and aware through their ministries.

Disaster can be involve nay level of impact for the day today life. Disaster can take thousands of peoples lives and great losses. There fore everybody need to give sufficient attention for the help those victims and disaster management plans to mitigate those losses as soon as possible. But lives can not be recover, however it can be minimized with great plans.

Flood Control

Channel Excavation

How to do a channel excavation, Side Drain, Side Ditches etc..

1.0 Introduction
This works consist of excavation for all channels, drains, ditches where in side and out side of the right of way showing on the Drawing or as instructed by the Engineer. The proper drainage shall be provided by constructing, shaping, finishing or backfilling where necessary involved in conformity with the required alignment, levels, grades and cross sections.

2.0 Abbreviation
QAE    – Quality Assurance Engineer
QAI    – Quality Assurance Inspector
QCI    – Quality Control Inspector
SE    – Site Engineer
SEO    – Safety and Environmental Officer
TO    – Technical Officer
QAS    – Quality Assurance System
ME    – Materials Engineer (Contractor)

3.0 Resource Allocation

3.1   Man power

Site  Engineer -01
Flagmen ( If necessary)-02
Surveyor helpers-05
SK/USK  labours-08
Operators- As required

3.2   Equipment & Tools

Back-hoe loader
Wheel Loader( If necessary)
Dump trucks(15 tons)
Tractor Trailer
Compacting rollers
Level instrument
Mortar pans
Pick axes
Wheel barrows
Safety Inventory
01. 10 No of barrels
02. 02 No of signal Men
03. 10No Traffic Jackets with Retro reflective patches/stripes
04. Sufficient barricade tapes.
05. 05 No barricade boards with Retro reflective stripes
06. 02 No Stop and Go signs
07. 03 No Road works ahead
08. 01 No Road Works ahead, End
09. 05 No of traffic cones
10. 04 No. of Blinking Lights

4.0 Quality Control Procedures

4.1 Sampling and testing

Embankment Filling Material:
Samples would be collected from the work execution areas and would be placed in a polythene bag providing identification tag. All required tests would be carried out in the materials testing laboratory for identification suitability of the Excavation Materials. The areas where backfilling is required for the conformity of the design levels, the works would be carried out with approved filling materials in layer by layer as described in technical specifications. Required test would be carried out after placing and compacting to check the degree of compaction.

4.2 Inspection Check list
To ensure that the all activities being performed with the expected quality, an inspection check    list would be filled by the person in charge for the Channel excavation in case of  covering  pre construction, during construction. The inspection check list shall include the specific requirements, safety and environmental measures.

4.3 Dimension Control
Channel excavation would be carried out according to the designed cross sections conformity with typical section issued for construction. The required shape, depth and offset of the excavation would be properly maintained during construction and those requirements would be checked with the inspection check list.

5.0 Methodology

5.1 Setting Out
• The setting out would be carried out in the area where the Engineer’s approval is given for channel excavation.
• Levels of excavation would be marked by the surveyor using pegs.
• The line of the Excavation would be marked with lime powder or any other proper manner

5.2 Excavation and Shaping
• The set out area would be subjected for the excavation with machinery or in manual manner conformity with designed line and levels
• The shape of the drain would be maintained to satisfy the typical sections issued for the construction.
• All materials suitable for embankment Construction removed from excavations would be used in Embankment construction or any other filling specified to fill with Embankment Materials.
• Materials deemed not suitable for embankment filling  would be disposed of to approved disposal locations
• Any area backfilling have to be done to form earth drains, filling would be done using approved filling material instructed by the Engineer

Channel Construction Flood Control

Flood Control in Sri Lanka

When we discuss about flood control in Sri Lanka, The growth areas of Sri Lanka, Specially Colombo district are more often treating by natural disaster of floods even in the light rain. Recently, reasonable attention has been given by the government to mitigate disaster of flood. The construction projects of storm water drainage systems are implementing according to severity of disaster & frequency of floods occurrence. The fortune of civil engineers & peoples in Sri Lanka is least effect of natural disaster comparing other countries in South Asia & even world wide. The main reasons could be identified as unplanned urbanization, absence of soil conservative practices & bad habits of some peoples.

The population growth of the Colombo district is rapidly increased in day by day. The retention areas are greatly reducing due to construction including the illegal as well. the increment of  intensity of the paved areas are effecting to more surface run off due to less infiltration that will evenly reduced due to higher ground water table. The lower latitude of Colombo district also directly influenced to flow rate of the storm water paths. The lesser gradient indirectly influences clogging of water path even piece of garbage. The construction of storm water drainage system is somewhat difficult now in these areas & development projects may get more time & cost rather originally designed and budgeted amount.

When considering of flood control in Sri Lanka,  design of the storm water drainage systems are mainly based on the past rainfall details, catchment characteristics and many other considerations of engineering hydrology & environmental engineering .the open channel construction is widely used in Sri Lanka including underground conduit, pipes sections which are need covering road crossing, building when alternative plans are impossible. The open channels are earth, gabion, random rubble masonry & reinforced concrete, the concrete, gabion channels can be either rectangular or concrete which are basically employed when the spaces are limited. Drainage system may consist of tertiary, secondary, & main canals types according to their capacity.  The frequency of other structures like culverts, bridges, conduits, underground pipes, maintenance road are vary according to intensity of roads & buildings etc.

The construction part of drainage system is vital task within this kind of environment, has to employ extreme knowledge of construction technology. The construction technologies may depend on

Spaces available for construction work

The construction techniques has to change according to the spaces available  for the construction works such as the machinery, plants, vehicles, trucks, material has to  accessible. In commonly the spaces available along channel work that most area has to construct the full width of channel. Therefore the section by sections has to complete due to limited spaces.

Water Diversion

The water path has to be diverted from construction section. The diversion channels are formed along the channel by separating sheet pile line or shoring line or otherwise polyethylene pipe. The construction of diversion channel has to change on section to section due to variation of site condition.

Traffic Diversion & Traffic intensity

The traffic diversion plan has to decide facilitating the vehicle flow. Sometimes some of the road sections have to close permanently according to alternative roots. But in main road crossing are cannot to be closed. Therefore single pile traffic has to allow & but in most cases pre cast concrete sections are providing complete such sections as soon as possible.

Soil condition

The soil conditions near the coastel area are very loose or sandy soil available. The excavations for channel construction are critical concerning safety of near building, pedestrian access, vehicle by pass etc…Therefore the excavated area has to be firmly separated by applying sheet pile or shoring will be vary according to bed level of channel

Ground water Table

The ground water table is very high near the coastal area. Therefore seepage of water has to be control by protecting cofferdam. The usages of water pumps are critical & construction schedule has to be tight minimizing the dewatering cost.

Intensity Lateral Loads

The buildings are much closed to the construction channel even in channel reservation. The construction method has to be changed considering the loose soil conditions also.

Utility Diversion

Detection of underground utility lines is important along the construction channel and has to be diverting according to the invert levels of channel & other utility poles , lines has to be relocate according to  alignment of the construction channel.

Public Interference

Public interference is considerably too high because intensity of people is too high. The variety of peoples form higher level to lower level involving many kind of complains objections etc. Therefore some of the construction sections may get unexpected time & cost.

Pedestrian access

When construction side drains along the road, the access for the building, house has to be removing for the construction works. Therefore temporary access has to be constructing for pedestrian as well as the vehicles. But sometimes has to provide Vehicle Park somewhere else that temporary access impossible for vehicles.

The new construction methods has to be improved to implement storm water drainage systems in urban & sub urban areas effectively while construction company should have experience to be a contractor of this kind of projects. the construction company & government body that the improvement of low lands is belong to Sri Lanka Land Reclamation & Development Corporation (SLLRDC) are doing great job towards mitigating the disaster of flood control in Sri Lamka. The Colombo district municipal councils are doing their maximum efforts to maintain storm water drainage systems effectively & helping to maximize productivity of newly construction drainage systems.