CIVIL YAAR

High-Strength Steel and Concrete for Prestressed Concrete: Experiments and research have proved that pre-reinforced concrete requires high strength steel and high strength concrete. Soft steel was used in initial experiments but it could not yield successful results as the stress of soil steel, which is about 120 N/mm2, is completely eliminated after some time. The depletion of soft steel goes up from 100 to 240 N/mm2. If this decline has to be reduced, the strength of steel should be higher initially. It has been found to be advisable to use high strength steel with 1200 to 2000 N/mm2 strength.  High strength concrete is also a requirement that must be in pre-reinforced concrete as the substances of this concrete generate high class resistance. High strength concrete immunity is significantly higher in tensile, bond and bearings. Precast Concrete: Its components are a mixture of high strength steel and high strength concrete. In comparison, precast concrete is prepared using soft ...

CONCRETING OPERATIONS Operations followed in the making of concrete in compliance with the safety and quality requirements are known as concreting operations. Concreting operations include: Storage of materials; Batching and Mixing of various ingredients; Concrete mix transportation; Concrete placing; Compaction of concrete; Surface finishing; and Curing of concrete. PURPOSE Concreting operations are vulnerable to safety and health hazards. This method statement describes the safety requirements and safe work procedure for concreting operations to: Prevent improper carrying out of concreting works; Carry works in a manner that’s safe at all times; Know the hazards involved in performing the activity; Ensure controls are in place to steer clear of hazard exposure. Use any other resources and methods not referred to in this method statement to suit the project requirement. Execute the work safely complying with the required standard. The sequence of activities is a repetitive process an...

    👉 What is batching of concrete?   Batching of concrete means measuring different ingredients of concrete (i.e. cement, sand, coarse aggregate and water) before mixing it. When this measurement is done on the basis of volume, we call it Volume Batching.     👉 What is a small batching plant? Small batching plant is suitable for places that require extreme mobility. There are two models available which are powered by electric motors and there is one model powered by diesel engine. There are total of three bins for addition of sand, cement and aggregates. All the bins are with individual load cells for accurate weighing. Methods of  Batching  Concrete 1. Volume Batching In volume batching, materials are measured on the basis of volume. It is less precise method of batching Measurement boxes or gauge boxes of known volume are used to measure materials. Cement is taken in the form of bags, where volume of one bag of cement (50 kg) is taken as 35 liters...

Table of Contents  1. Watch out for inexperienced workers  2. Provide clear instructions to workers  3. Keep a close tab on faulty machinery and tools  4. Climb on and off equipment safely  5. Use a high quality adjustable ladder  6. Maintain a safe distance from operating machinery  7. Have a first aid kit  8. Be weary of fall hazards  9. Always plug tools out of the outlet  10. Reduce or ban the use intoxicating substances  11. Final Thoughts: Safety Tips for Construction Sites   1. Watch out for inexperienced workers Allowing a guy who only has a few months of construction work under his belt to operate an excavator in a tight space is not the smartest idea. In fact, allowing him to operate an excavator or any other dangerous equipment with people in close proximity is foolish. Let the less experienced workers build up their skills by operating excavators, cranes and other dangerous machinery by doing work away from other...