Various Construction Machinery Analyses

Abstract

Construction is the various hazards available industry. At the same time these hazards make more reportable or non – reportable accident in the construction field. Most of the accidents are arrived due to the construction machinery. Now, in the modern construction field the usage of machinery is quite high. Maintenance and it will also focusing on calculating the overall equipment effectiveness. Utilization of machine properly and match their capacities to specific project requirements. Current practices and observations made in Indian construction industry. The effectiveness of construction machineries is a major factor that differentiates construction companies in terms of heavy construction and light construction. The objective of the work is to enhance the equipment effectiveness at a construction company. So we need to save the time in the construction field at the same time the machine related safety also important as well as reduce the accident.

Introduction

I. INTRODUCTION

Paver or asphalt paver is pavement laying equipment which is used in road construction. Paver contains a feeding bucket in which asphalt is continuously loaded by the dump truck and paver distributes the asphalt evenly on the road surface with slight compaction. However a roller is required after laying asphalt layer for perfect compaction.

1. Compactors: Compactors or Rollers are used to compact the material or earth surface different types of compactors are available for different compacting purposes. Smooth wheel rollers are used for compacting shallow layers of soil or asphalt etc. sheep-foot rollers are used for deep compaction purposes. Pneumatic tired rollers are used for compacting fine grained soils, asphalt layers etc.
2. Tele Handlers: Tele handlers are hoisting equipment used in construction to lift heavy materials up to required height or to provide construction platform for workers at greater heights etc. It contains a long telescopic boom which can be raised or lowered or forwarded. Different types of arrangements like forklifts, buckets, cabin, lifting jibs etc. can be attached to the end of telescopic boom based on the requirement of job.
3. Feller Bunchers: Feller bunched is tree cutting heavy equipment used to remove large trees in the construction field. They cut the tree and grab it without felling, likewise gathers all the cut down trees at one place which makes job easier for loaders and dump trucks. DUMP TRUCKS: - Dump trucks are used in construction sites to carry the material in larger quantities from one site to another site or to the dump yard. Generally, in big construction site, off-road dump trucks are used. These off-road dump trucks contain large wheels with huge space for materials which enables them to carry huge quantity of material in any type of ground conditions.
4. Pile Driving Equipment: Heavy equipment used in construction site is pile driving equipment in case of pile foundation construction. This equipment lifts the pile and holds it in proper position and drives into the ground up to required depth. Different types of pile driving equipment are available namely, piling rigs, piling hammer, hammer guides etc. in any case the pile is driven into the ground by hammering the pile top which is done hydraulically or by dropping.

II. FUNCTIONS OF THE CONTROLS AND DISPLAY INSTRUMENTS

A. Starting Up

Starting the engine, the traction drive, the conveyor, the auger, the screed or the lifting devices can cause injuries or even the death. Make sure before starting any of these devices that no-one is working at, in or beneath the paver or within its danger area. Do not start the engine and do not actuate any controls when this is expressly forbidden. Unless otherwise specified in the operating instructions, the controls may only be actuated when the engine is running. Never crawl into the auger tunnel or step into the hopper or onto the conveyor when the engine is running. A moving auger or conveyor can cause severe injury or death. Never start this machine in an environment where it is believed explosive gases may be present, and never work in enclosed, unventilated rooms below ground level / underground. Always remember that the engine emits toxic and potentially lethal gases. Always ensure that the working area is well ventilated. Only mount or dis-mount the machine while the machine is stationary. Use the handles and retaining fixtures provided.

Never adjust the driver’s seat while the vehicle is in motion because the seat position may alter accidentally in the process. After setting the backrest position, check that it is properly secured in this position. When driving, always remain seated on the driver’s seat.

B. Starting At Low Ambient Temperatures

Follow the instructions for starting at low ambient temperatures. When using starter gas, always follow the manufacturer’s instructions for the type of gas being used. When starting the engine with the help of jumper cables, follow instructions precisely. Otherwise there is a risk of serious injury and damage to the machine, electrical damage and damaged electronic equipment resulting from a battery explosion, corrosive acid etc. Remove all the cell covers and place a cloth over the openings on the battery cells (this does not apply to zero- maintenance batteries). Ensure that no sparks can be caused when connecting the cables.

C. Conduct During Travelling

Always make sure during operation that no-one is endangered by the machine. Ensure that all protective covers and hoods are fitted and secured accordingly. When damages are detected, eliminate them immediately. Immediately stop operation when the paver finisher is defective. Do not let any persons ride on the paver finisher or on the screed. Remove any obstacles from the road and the work area. Always try to choose a driver position that is opposite to the flowing traffic. Lock the operating panel and the driver’s seat. While travelling,

1. Do not allow arms and legs to hang out of the driver stand,
2. Do not lean beyond the outer edges of the paver finisher,
3. Do not climb from one vehicle onto another or onto permanent structures.

Keep a sufficient safety clearance to overhanging objects, other machines and points of danger. Be careful when travelling on rough terrain to keep the paver finisher from slipping, tipping or turning over. Never use the paver finisher beyond its capabilities to avoid losing control over the machine. Whenever the machine is operating, someone must always be in the driver’s seat at all times. Where necessary, wear a seatbelt.

D. Visibility

The driver must look in the direction of travel and must always have a clear view of the route ahead. Especially when driving in the reverse direction, he must ensure that his path and the working area are clear. The machine must be equipped with the specified lighting equipment to suit prevailing working conditions. Check that all equipment operates in accordance with specifications. All headlights must be adjusted in such a way that other road users are not blinded by glare.

Table 1: Checks To Be Carried Out Before Starting Daily Work

III. STANDARDS AND REGULATIONS OF CONSTRUCTION MACHINERY

A. Occupational Safety and Health Administration (OSHA)

No current OSHA standards apply specifically to compacting and baling equipment. However, current OSHA regulations on the control of hazardous energy sources (lockout/ tag out) [29 CFR 1910.147], and machine guarding [29 CFR Part 1910.212 ] are applicable to these types of equipment. In addition, the confined space standard [29 CFR 1910.146] may apply to entry into compacting and baling equipment. An OSHA publication, Concepts and Techniques of Machine Guarding , describes and illustrates methods that can be used for providing safeguards for balers and compactors [OSHA 1992 ].

B. American National Standards Institute (ANSI) Standards

ANSI publishes voluntary standards addressing safety requirements for a variety of equipment, including compactors and balers. These standards were last revised in 1997. Stationary compactor safety requirements are outlined in ANSI Z245.2 1997 [ANSI 1997a], and baling equipment is addressed in ANSI Z245.5 –1997 [ANSI 1997b ]. The key points of the ANSI standards state the following:

C. Indian Standard Codes

 Following are the Indian Standard Codes on Pile Foundations:

1. IS 2911 : Part 1 : Sec 1 : 1979 Driven cast in-situ concrete piles
2. IS 2911 : Part 1 : Sec 2 : 1979 Bored cast-in-situ piles
3. IS 2911 : Part 1 : Sec 3 : 1979 Driven precast concrete pile
4. IS 2911 : Part 1 : Sec 4 : 1984 Bored precast concrete piles
5. IS 2911 : Part 2 : 1980 Timber piles
6. IS 2911 : Part 3 : 1980 Under reamed piles
7. IS 2911 : Part 4 : 1985 Load test on piles
8. IS 5121 : 1969 Safety code for piling and other deep foundations
9. IS 6426 : 1972 Specification for pile driving hammer
10. IS 6427 : 1972 Glossary of Terms Relating to Pile Driving Equipment
11. IS 6428 : 1972 Specification for pile frame
12. IS 9716 : 1981 Guide for lateral dynamic load test on piles
13. IS 14362 : 1996 Pile boring equipment – General requirements
14. IS 14593 : 1998 Bored cast-in-situ piles founded on rocks – Guidelines
15. IS 14893 : 2001 Non-Destructive Integrity Testing of Piles (NDT) – Guidelines

D. AS 2159- 2009

The Australian Standard (AS 2159-2009) sets out the minimum requirements for the design, construction, and testing of piled footing for building structures on land or immediate inshore locations. It has excluded offshore or deep-water construction.

IV. RESEARCH METHODOLOGY

A pilot study was undertaken in which five site engineers were interviewed in order to identify the problems faced by construction machinery users. As the outcome of the interviews, thirty eight problems were identified that were classified under table 1 & 2.

Table 4.1: Risk Assessment For Construction Machinery

Table 4.2: PILE BORING / DRIVING

Safety Precaution During Operation Of Equipment

1. The workers employed in the vicinity of pile drivers shall wear helmets conforming to accepted standards.
2. The pile shall be prepared at a distance at least equal to twice the length of the longest pile from the pile driver.
3. Piles being hoisted in the right should be so slung that they do not have to be swung or whip-round.
4. A hand rope shall be tied to a pile that is being hoisted to guide and control its movement.
5. When a pile is guided into position, workers shall not put their hands or arms between the pile and the inside guide, but shall use a rope for guiding.
6. A pile shall be provided with an iron ring or cap over the driving end to prevent grooming before the pile is hoisted.
7. When creosoted woodpiles are being driven, necessary precautions shall be taken to prevent workers from receiving skin or eye injuries from splashes of creosote.
8. No air or steam shall be blown down until all workers are at a safe distance.
9. The developer should also demand that the building contractor use standard scaffolding. This measure would be even more viable if the use of such equipment were stipulated in the final project design.

Conclusion

Construction is one of the highly hazardous industries in the world. In India around 5 million workers directly and indirectly depends on the industry. At the same time lot of reportable and non-reportable accidents also occur in the site. In construction industry the time is very important, that`s why the heavy machineries are mainly used. But it also makes some accidents. As a result, their preventive maintenance and repairs have become complicated. It was observed that, mostly, machinery hiring firms do not operate as pure hiring firms and hence do not consider satisfying the customers as an important requirement to stay competitive in machinery hiring the main cause of accident is unsafe act.

References

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Copyright

Copyright © 2022 Karthika R, Selvaraj G, Kandasamy R, DineshKumar R. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.