Why hatching is not appeared in my auto CAD PDF ?

It is very necessary to get the printout of PDF format of the created drawing for further uses.
But sometimes what happens with the drawing , that the hatching property will not appear in the PDF.
This due happens higher hatching context or incorrect printer or plotter setup of the page.
To get faster solution I found by taking option of solid hatching only of that portion.

Due to our ignorance or some accidents, working in a construction site is always involved with risks. However, with the following practices adopted in sites, we can considerably reduce the mishaps and improve the safety in construction sites.

· Site specific induction training on safety should be provided to all workers, which point out the high risk areas, and provide guidance for basis emergency management.

· Since the risks in construction work is unpredictable, it’s impossible to eliminate all safety risks. However, many of such accidents are avoidable by conducting regular safety audits and having a standard operating procedure for all the works and address the potential risks in these.

· Implement strict security and safety protocols in site. Also it is always better to limit access to the site in order to ensure protection of heavy equipment and machinery from theft and damage.

· Separate entry and exit points should be established for heavy machinery/vehicle access, to strengthen pedestrian safety at high traffic points.

· Chemicals and other hazardous materials need to be stored very carefully to minimise fires, explosions, asphyxiation, chemical injury and pollution on worksites.

· Overhead and underground power transmission lines can be lethal so it is important that the construction workers maintain safe distance from them, all the lines are grounded, all construction electrical products are insulated using sleeves and all heavy equipment are de-energized when not in use.

· Check that all the extension cords are adequate for the amount of current being carried to avoid fluctuations and overloading.

· If a portable electrical product is used in a damp environment, it is essential to ensure that a transformer is used to isolate the voltage between conductors so it does not exceed 230 volts.

· Always display signage clearly at the construction site. It should also include a 24×7 emergency number along with a detailed map that leads to location of fire extinguishers, first aid supplies, emergency exits, and amenities available on site.

· Ensure to follow safety signs and procedures without fail.

· An employer must provide Personal Protective Equipment(PPE) kit to all the workers. This should include safety harness, safety goggles, head protection gear, ear plugs etc. depending upon the type of work.

· A safety officer must be appointed in site in order to ensure the efficient usage of PPEs by the workers.

· Always keep the construction site clean throughout your shift to reduce the number of slip and trip hazards.

· Use the right equipment for the specified work. Before beginning the work, visually check the condition of the equipment and ensure that it is safe to use.

Types of Steel Reinforcement

  1. High Yield Strength Deformed Bars (HYSD) HYSD bars are commonly used for RCC works. They are characterized by the ribs present on their surface. The ribs are formed when the hot steel is rolled through the mill. The bond strength of these bars is 40-60% higher than the mild steel bars of the same size.
  2. Mild Steel bars are plain bars. They have lesser yield and ultimate strength than the HYSD bars. The absence of ribs on the surface causes a weaker bond with the concrete.
  3. Prestressing Bars are made of few cold worked wires. It is also called tendons. A tendon is typically made up of 2, 3, or 7 wires. The tendons are easier to lay in any desired profile and have high ultimate tensile strength.
  4. The term TMT Bar stands for Thermo-Mechanically Treated Bar. These bars are manufactured by passing the hot rolled bar through cold water. The passing of the hot bar through cold water hardens the but the core remains soft. The hard surface provides better durability while the soft core provides tensile strength.

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