COMPRESSIVE STRENGTH TEST ON CONCRETE CORE

Compressive Strength Test on Drilled Concrete Cores is required to determine the strength of hardened concrete in structure. Following are the specification for drilled concrete cores to be suitable for compressive strength test: Diameter of concrete core: The  diameter of the core specimen  for  the  determination  of compressive strength in load bearing structural  members shall (…)

CONSTRUCTION EQUIPMENTS FOR DIFFERENT PURPOSES

Construction Equipments The selection of the appropriate type and size of construction equipments often affects the required amount of time and effort and thus the job-site productivity of a project. It is therefore important for site managers and construction planners to be familiar with the characteristics of the major types of equipment most commonly used(…)

TYPICAL JOINT DETAILING OF STEEL HOLLOW SECTIONS

JOINT DETAILING OF STEEL HOLLOW SECTIONS Detailing of joints in steel structure is as much important as detailing of main structural members. Ultimately loads from structures are transferred to different structural members through joints. So, a good detailing of joints in steel structure is required to make the structure safe for the given loads. Here(…)

FOUNDATIONS & ANCHORAGE FOR PRE-ENGINEERED BUILDING

Foundation design and construction for Pre-Engineered Buildings are important to the assembly process. To ensure optimum integrity of new building, the foundation must meet certain design criteria and load conditions. It is required that all building foundations be designed by an experienced foundation engineer, and coordinated with all local city, county and state codes. Improper(…)

SLIPFORM CONSTRUCTION METHOD

Slipform construction is a method for building large towers or bridges from concrete. The name refers to the moving form the concrete is poured into, which moves along the project as the previously poured concrete hardens behind it. The technique has also been applied to road construction. The technique was in use by the early(…)

GROUND IMPROVEMENT TECHNIQUES

Ground Improvement Techniques Essential prerequisite for High Speed corridor is to have control on the degradation of track geometry so as to keep various tolerances well within the specified limits. Degradation of track geometry is a function of Track Design, Axle-Load, Speed, and Sub-Grade characteristics. Improvement of sub-grade in poor ground areas is recognized as(…)

TYPES OF CRACK IN CONCRETE STRUCTURES

Types of cracks   Structural cracks. Non Structural Cracks. Structural Cracks Structural cracks are those which result from incorrect design, faulty construction or overloading and these may endanger the safety of a building and their inmates. Non Structural Cracks. Non Structural cracks occur mostly due to internally induced stresses in building materials. These cracks normally(…)

TYPES OF MACHINE FOUNDATIONS

Machine foundations are special types of foundations required for machines, machine tools and heavy equipments which have wide range of speeds, loads and operating conditions. These foundations are designed considering the shocks and vibrations (dynamic forces) resulting from operation of machines. Following are the types of machine foundations generally used: 1. Block Type Machine Foundation:(…)