Sub Sections: 1 2 3 4 5 6 7 8 9 10 11 12
Pages
: 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100

Micro Piles  |  Pressure Grouting  |  Rock Anchors  |  Permeation Grouting
Soil Nailing  |  Compaction Grouting  |  Micropiles  |  Injection Grouting  | 
Chemical Grouting

Our techniques apply when adding new structures: especially rock anchor, microfine cement, soil nailing, micropile installations for foundation support. We specialize in slope stabilization, anchors, permeation grouting, foundation repair and support, grouting, soil nails, rock drilling, micropile installations, and sinkholes. We use a problem-solving approach geotechnical architecture of buildings, bridges, water plants, sewage plants, tunnels, sinkholes, caisson, shoring, underpinning, agriculture, and roads construction. We are experienced in these applications: micro piles, sinkhole repair, permeation grouting, pressure grout, soil nails, chemical grouting, micropiles, compaction grout, and rock anchors. Our specialties are rock anchor, acrylamide and compaction grouting, mini piles, sinkhole repair, micropiles, acrylamide grouting, and soil nailing. We will continue to dedicate ourselves to excellence, including insurance mortgage, in our performance, in our integrity, and in our relationships with our customers. We will carefully weigh our decisions, actions, and results to make sure that we remain the most trusted name in the geotechnical contracting industry. Please visit our website http://www.rembco.com/. Add Concrete Construction URL

Artistic Business Community Related Construction Industry Computers Education Relevant Entertainment Health Internet Family Recreation Science Shopping Society
Driven Piles
JULY
1997
7-15
Single Acting Steam/Air Hammer
The single acting steam/air hammer is the simplest powered hammer. Invented in England
by James Nasmyth in 1845, it has been used in this country since 1875.
As shown in Figure 7-10, the hammer consists of a heavy ram connected to a piston
enclosed in a chamber. Steam or air is supplied to lift the ram to a certain height. The
lifting medium is then exhausted and the ram allowed to fall by its own weight.
The rated energy of the single acting steam/air hammer is calculated by multiplying the
ram weight (total weight of all moving parts: ram, piston rod, keys, slide bar, etc.) times the
length of stroke.
These hammers have a stroke of between 30 and 40 inches and operate at 60 to 70 strokes
per minute. They are rugged and deliver a relatively low velocity heavy blow. The only
necessary changes in operation from steam to air are a change in the general lubrication
and the hose line specification.
The Engineer should:
NO.
ITEM DESCRIPTION
1
Have the manufacturer’s current specifications for the type and model of
hammer being used.
2
Ensure all required parts of the hammer are intact and in good operating
condition.