Experienced Geotechnical Constructors
Our project capabilities range from soil stabilizations to complex foundation systems for utilities, buildings, bridges and critical infrastructure. We have successfully installed strand and bar anchors for earth retention, micropiles and tie downs for a structural foundations, compaction and permeation grouting, soil mixing and have the in-house capabilities to perform other deep foundation techniques. Our professional staff includes professional geologists and engineers that have more than 150 years of experience in the geotechnical construction industry. See for yourself why building your foundation with Howard leads to your project’s success.
Micropiles are small diameter (less than 12 inches) drilled-in support elements. Micropiles often are constructed using high strength steel pipe (80 ksi) and can provide compression load capacities in excess of 400 kips using 9-5/8-inch diameter pipe. Micropiles can be installed in restricted workspaces - low vertical clearances, constricted and difficult access locations. They can be used for new foundations or to supplement existing foundations within an existing structure.
Drilled shafts, also referred to as drilled piers, caissons or bored piles, are a type of deep foundation that is used to support structures with large axial and lateral loads by drilling into the ground and filling them with concrete. These foundations typically range in diameter from 24” through 120” with depths typical under 100-feet but can be larger in both diameter and depth.
Drilled shafts are used commonly for bridges, buildings, earth-retention structures, sound barriers and power distribution/transmission foundations.
Soil and Rock Anchors
Soil and rock anchors have been used successfully for decades in both temporary and permanent applications. Typical uses are for retaining walls, dam stabilizations, excavation support, marine bulkheads and landslide stabilization.
Anchors are installed by drilling to the appropriate depth in the soil or rock, setting steel strand or bar material in the borehole, placing cement grout and then stressing the anchor to the required load using a hydraulic jack. Anchor loads in excess of 1,000 tons have been reached with rock anchors.
Drilling & Grouting
Many applications of drilling and grouting exist. Two specialty applications performed by us include Permeation Grouting and Compaction Grouting. Permeation grouting is the placement of a grout material, cementitious or chemical, into voids in the soil or rock strata. This can be accomplished by either tremie or pressure grouting methods. Compaction grouting is the placement of a low slump, low strength material under pressure into loose soil strata for ground improvement purposes.
Our combination of drilling and grouting expertise has made us the leading choice of contractors, mining companies, government agencies and communities faced with solving mine subsidence problems. We have also made flowable fills for other purposes, such as trench and excavation backfill, foundation support and pond liners
Soil mixing operations are used to stabilize coal refuse ponds and hazardous waste impoundments by the introduction of cementitious material. Deep mixing is conducted by utilizing a specially designed three auger mix panel supported by a large capacity crane. Shallow mixing is accomplished by using a custom designed large backhoe equipped with a long reach dipper stick and hydraulically driven mixing device.
2327 Hill Church Houston Road
Canonsburg, PA 15317
18801 South Miles Rd.
Warrensville Heights, Ohio 44128
124 Tower Plaza
Belleville, IL 62220
146 W. Borland Street
Pickerington, Ohio 43147
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