What is the first step of the excavation process?
The first and primary step involved in the excavation is to find out the extent of soil and Clearing of construction site is of unwanted bushes, weeds and plants. Setting out or ground tracing is the process of laying down the excavation lines and centre lines etc. on the ground before the excavation is started.
What is an excavation plan?
An excavation or trenching plan is a document that the excavation company prepares prior to project start. It includes a hazard assessment, project requirements, safety procedures for workers to follow, and more.
At what depth must an excavation be supported?
For example, OSHA in the United States still specifies a depth that trench shoring must be used, which is currently 5 ft or 1.5 metres deep. However, if the trench is less than this depth, a competent person must determine if a protective system is required.
How is excavation depth measured?
So, the formula is: Ab = Wb * Lb, where Wb and Lb are the width and length of the bottom of the excavation. At = Wt * Lt, where Wt and Lt are the width and length of the top of the excavation. In our example, Wb = Lb = 5 and Wt = Lt = 15, so Ab = 5 * 5 = 25 and At = 15 * 15 = 225, and D = 5.
What are the steps in site preparation?
Steps involved in the Site Preparation of Building Construction Project
- Site Surveying.
- Site Clearing.
- Soil Analysis.
- Plan Design.
- Site Investigation.
What are the steps involved in site clearance?
It involves clearing a site of any machinery or equipment, unwanted surplus materials, rubbish, and so on. Site clearance may also involve clearing away vegetation and surface soil, and levelling and preparing the ground for the planned construction works.
What are the three methods of excavation?
Each process may require different tools and techniques to ensure you can safely complete your task.
- Bridge Excavation.
- Borrow Excavation.
- Channel Excavation.
- Drainage Excavation.
- Dredge Excavation.
- Stripping.
- Earth Excavation.
- Muck Excavation.
How many types of excavation are there?
A common method of classifying excavation is by type of excavated material: topsoil, earth, rock, muck, and unclassified.
What is the work procedure of excavation at construction site?
Work Procedure of Excavation at Construction Site. Work procedure for excavation at construction site involves understanding of centre line and excavation drawings, setting out of plan on ground, excavation of soil and removal of excess soil. Quality checks such as recording ground level and marking of reference points should be done.
What are the steps involved in the excavation process?
The first and primary step involved in the excavation is to find out the extent of soil and Clearing of construction site is of unwanted bushes, weeds and plants. Setting out or ground tracing is the process of laying down the excavation lines and centre lines etc. on the ground before the excavation is started.
How to plan a safe excavation?
Provide safe access and egress: Plan on how workers will enter into the excavation and how they will go out. Jumping into an excavation should be discouraged. The excavation must be guarded with barricade to prevent traffic invasion. Warning sign should be placed to warn people off the excavation.
Where can I find OSHA standards for excavations?
In U.S. federal regulations, OSHA standards for excavations are specifically found in Title 29 (Labor) Part 1926 (Safety and Health Regulations for Construction) Subpart P (Excavations), or 29 CFR 1926 subpart P. The excavation regulation also contains appendices for the following: