Shoring, form of prop or support, usually temporary, that is used
during the repair or original construction of buildings and in excavations
. Temporary support may be required, for example, to relieve the load on a masonry wall while it is repaired or reinforced.
What is a hydraulic Shore?
Hydraulic vertical shores are
designed to prevent cave-ins in all types of soil conditions
, except for unstable soil conditions. It does this by supporting the side walls of a trench by means of hydraulic pressure. The vertical shores are installed and removed from the top of the trench.
Why are hydraulic shores frequently used?
Hydraulic shoring is
very popular as it is faster and easier to use
. Other methods are generally used for long term applications and larger excavations. Reasons for the popularity of hydraulic shoring: It is more safe than timber shoring.
What is the purpose of shoring in excavation?
Shoring is the
provision of a support system for trench faces used to prevent movement of soil, underground utilities, roadways, and foundations
. Shoring or shielding is used when the location or depth of the cut makes sloping back to the maximum allowable slope impractical.
How often should hydraulic shoring be checked?
All shoring should be installed from the top down and removed from the bottom up. Hydraulic shoring should be checked
at least once per shift
for leaking hoses and/or cylinders, broken connections, cracked nipples, bent bases, and any other damaged or defective parts. FIGURE V:2-8.
How much does hydraulic shoring cost?
With a starter set consisting of two shores, a pump can, a release tool, and a release hook, shoring systems range in price from
$1550 to $2400
.
When should shoring be used?
Shoring is the provision of a support system for trench faces used to prevent movement of soil, underground utilities, roadways, and foundations. Shoring or shielding is used
when the location or depth of the cut makes sloping back to the maximum allowable slope impractical
.
What are the types of shoring?
- H and I-beam shoring. …
- Secant pile shoring. …
- Contiguous pile shoring. …
- Sheet piles. …
- Diaphragm walls. …
- Raking shoring. …
- Hydraulic shoring. …
- Soil nail shoring.
How deep before shoring is required?
Trenches
5 feet (1.5 meters) deep
or greater require a protective system unless the excavation is made entirely in stable rock. If less than 5 feet deep, a competent person may determine that a protective system is not required.
What are the types of excavation?
- Earth excavation is removal of the layer of soil immediately under the topsoil and on top of rock. …
- Muck excavation is removal of material that contains an excessive amount of water and undesirable soil. …
- Unclassified excavation is removal of any combination of topsoil, earth, rock, and muck.
What causes most deaths in excavation?
Falls
.
Falls
are the leading cause of fatalities in construction. … These usually occur from not having proper safety nets for holes, unguarded protruding rebar where impalement happens, not stabilizing portable ladders, poor scaffold construction.
What is the most expensive and difficult method of shoring?
The most expensive trench support methods are shoring methods such as
soldier piles
, sheet pile, or modular shoring.
When digging a trench a gas line hit can lead to an explosion?
– A gas line hit can lead to an explosion. – A broken water line can fill a trench in seconds. – Contact with buried power cables can kill. Safety Tip: Always your local utility locating service such as 811 before you dig, and get the utilities marked.
When vertical shores are used there must be a minimum of?
(6) When vertical shores are used, there must be a minimum of
three shores spaced equally, horizontally
, in a group.
What are the three main protection methods against cave-ins?
- SLOPE or bench trench walls.
- SHORE trench walls with supports, or.
- SHIELD trench walls with trench boxes.
