Pile Lateral Load Test
(Horizontal Load Test)

Static lateral load test on piles to determine their resistance to horizontal forces — essential for retaining walls, bridge abutments, marine jetties and structures subject to wind, seismic and wave loading.

Overview

What is the Pile Lateral Load Test?

The Pile Lateral Load Test applies a horizontal static load to the pile head to determine the pile's lateral resistance and load-deflection behaviour. Lateral capacity depends on soil stiffness, pile stiffness, pile head fixity and the applied load eccentricity — all captured in this test.

Conducted as per ASTM D3966 and IS 2911 Part 4, this test is specified for bridge abutment piles, jetty dolphins, retaining wall king piles and structures in seismic zones. Two adjacent piles are typically tested by jacking them apart laterally — providing simultaneous lateral load test data for both piles.

Direct Lateral Capacity Measurement

Actual measured horizontal resistance — not extrapolated from vertical load tests.

Load-Deflection Curves

Complete lateral load vs head deflection curves for structural design validation.

Two-Pile Simultaneous Test

Jacking two piles apart provides efficient simultaneous test data for both piles.

Pile Head Fixity Assessment

Free-head and fixed-head conditions can be tested to assess rotational restraint.

NABL Certified Reports

All results issued on NABL-accredited letterhead per ASTM D3966 / IS 2911.

Seismic Design Validation

Critical for validating lateral pile design in seismic zones as per IS 1893.

Test in Action

Pile Lateral Load Test — Site Images

Lateral Load Jack Between Two Piles

LVDT Deflection Measurement at Pile Head

Load-Deflection Curve Plotted on Site

Test Procedure

How the Pile Lateral Load Test is Conducted

1

Test Pile Preparation

Two adjacent test piles are prepared with pile caps or collars to receive the horizontal loading apparatus.
2

Hydraulic Jack Placement

A hydraulic jack is placed horizontally between the two pile heads to apply lateral load simultaneously to both piles.
3

Deflection Measurement Setup

LVDTs and dial gauges are installed at pile head and at depth (where accessible) to measure lateral deflection.
4

Incremental Lateral Load Application

Lateral load is applied in increments per ASTM D3966. Deflection is recorded after stabilisation at each increment.
5

Load-Deflection Analysis & Reporting

Lateral load vs deflection curves are plotted. Lateral stiffness, yield load and ultimate lateral capacity are determined. NABL report within 7 days.

Standards & Specifications

Applicable Test Standards

Standard	Title	Scope	Type
ASTM D3966	Standard Test Methods for Deep Foundations Under Lateral Load	Lateral Load Test	ASTM
IS 2911 Part 4	Code of Practice for Design and Construction of Pile Foundations — Load Test	Pile Load Test	Indian Standard
IS 1893	Criteria for Earthquake Resistant Design of Structures	Seismic Design	Indian Standard
BS EN ISO 22477-1	Geotechnical Investigation — Testing of Geotechnical Structures	Foundation Testing	European Standard

Applications

Where is the CAPO Test Used?

Bridge abutment and pier piles subject to braking and wind lateral forces

Marine jetty dolphin piles subject to berthing and wave lateral loads

Retaining wall king piles and sheet pile anchor systems

High-rise building piles in seismic zones requiring lateral capacity validation

Wind turbine foundation piles subject to large overturning moments

Transmission tower piles subject to combined vertical and horizontal wind loads

Why Choose Global Lab

Our Advantages

NABL Accredited ReportsLegally valid certificates for all statutory and contractual requirements.

Efficient Two-Pile MethodSingle jack tests two piles simultaneously — cost and time efficient.

Autovity Digital ReportsLoad-deflection curves and test data accessible digitally.

Seismic ExpertiseExperienced in lateral pile testing for IS 1893 seismic zone compliance.

Pan-India CoverageTeams across 7 lab locations for rapid mobilisation.

Complete Foundation PackageLateral + Vertical + Dynamic + Integrity tests available together.

Pile Lateral Load Test(Horizontal Load Test)