Deep Foundations

A deep foundation system creates support of building loads utilizing piers or piles to reach a deeper, more stable subsurface layer.

Helical Piles

A strong and versatile solution for deep foundation systems, Helical Piles can be used to support wall loads and/or pile caps supporting massive loads. Installed by hand, or with any variety of construction equipment, helical piles are ideal for projects of all shapes and sizes. Advanced into the ground to appropriate depths for stable soils or bedrock, the piles then brace against foundation footings and transfer weight carefully from subpar soils down to competent strata – completely stabilizing any foundation.

Grouted Micropiles

Micropiles are small diameter drilled and grouted friction piles. Each pile includes steel elements that are bonded into the bearing soil or rock – usually with cement grout. Since micropiles are bonded to the rock socket wall, they do not rely on end-bearing capacity and there is no need to establish competency of rock beyond bond-depth. They can be installed quickly in virtually every type of ground using highly adaptable mobile drilling equipment.

Push Piers

Ideal for stabilizing and/or lifting sinking or settling foundations, Push Piers use high-strength steel tubes and load transfer brackets to transfer structure weight to solid, load-bearing soils or bedrock. Piers are hydraulically driven down to competent strata until the target load/pressure is achieved or the structure begins to lift.

Grouted Helical
Pull Down Piles

Grouted helical pull down piles can be advanced with smaller equipment in limited access areas. Installation is vibration-free and does not generate spoils. The grout column surrounds the pile shaft to create a pile that is more resistant to buckling. Where favorable soil conditions exist, a grouted helical pull down pile may achieve allowable capacities exceeding 100 kips, which may then be considered as an economical alternative to large diameter helical shaft sizes or other deep foundation options.

Driven piles

Precast piles are installed by hammering or driving the pile into the soil using large driving equipment. Pile lengths can vary from 40’ to 100’ depending on soil conditions. Concrete piles are used when the top layers of the site’s soils are very weak and cannot support the structure. Applications include high-rise structures or skyscrapers, large bridges, and water tanks.

Driven piles are installed by hammering or driving the pile into the soil using large driving equipment. Pile lengths can vary from 40’ to 100’ depending on soil conditions. Piles are used when the top layers of the site’s soils are very weak and cannot support the structure. Applications include high-rise structures or skyscrapers, large bridges, and water tanks.

Auger cast piles

Continuous flight auger (CFA) Piles are also known as auger cast piles, augered cast-in-place piles (ACIP), auger-pressure grout piles, drilled displacement piles and screw piles. It provides an economic, quick, low noise and vibration solution for constructing piles for medium to highly loaded structures.

Continuous flight auger pile construction system eliminates the need to employ support fluid or casings in cohesive soils, non-cohesive or water bearing soils.

drilled shafts

A drilled shaft is a type of deep foundation that is constructed by first drilling a cylindrical hole and then filling the hole with reinforcing steel and concrete. Both straight shafts and belled shafts are utilized depending on soil types and loads.

The soil is excavated by use of rotary drilling equipment. This procedure typically uses a surface casing or guide to initiate drilling. Excavation is carried out exclusively using rotary drilling that incorporates using an auger with or without rock teeth.

A drill is then introduced through the casing, and excavation is carried out to full depth of the shaft. Concrete is poured as the casing is removed from the hole.