© 2014 Foundation Supportworks
®
,
Inc.
All Rights Reserved
p 284
APPENDIX 3D
MODEL SPECIFICATION – HYDRAULICALLY-DRIVEN PUSH PIER SYSTEMS
Chapter 3
Hydraulically-Driven Push Piers
B, Type E & S with a minimum yield strength of 35 ksi and a minimum tensile strength of
60 ksi. The pier tube shaft coupling finish is plain steel.
5.3.3 External Sleeve: The central steel shaft of the external sleeve is 3.500-inch outer diameter
by 0.216-inch wall thickness hollow structural section in conformance with ASTM A500
Grade B or C with a minimum yield strength of 50 ksi and a minimum tensile strength of
62 ksi. A 0.75-inch long collar, welded to one end, is manufactured with 4.000-inch by
0.226 wall thickness hollow structural section conforming to ASTM A53 Grade B, Type
E & S with a minimum yield strength of 35 ksi and a minimum tensile strength of 60 ksi
or the end of the external sleeve is trumpeted without a collar. The external sleeve shaft
finish is either plain steel or hot-dip galvanized in accordance with ASTM A123.
5.3.4 Brackets: Retrofit brackets FS288B, FS288BL, FS288BV and FS288BFM are suitable for
use with the PP288 push pier system. Bracket finishes are either plain steel or hot-dip
galvanized in accordance with ASTM A123. Bracket hardware finishes are zinc coated
in accordance with ASTM B633.
5.4 Model PP350 Push Pier System
5.4.1 Starter and Pier Tube Sections: The central steel shaft of the starter and pier tube sections
are 3.50-inch outer diameter by 0.165-inch nominal wall thickness hollow structural
section in conformance with ASTM A500 Grade C with a minimum yield strength of 50
ksi and a minimum tensile strength of 55 ksi. The starter tube includes a 1.00-inch long
factory-welded friction reduction collar manufactured from 4.00-inch outer diameter by
0.226-inch nominal wall thickness hollow structural section conforming to ASTM A53
Grade B, Type E & S with a minimum yield strength of 35 ksi and a minimum tensile
strength of 60 ksi. The starter tube and pier tube shaft finishes are triple coated in-line
galvanized and the friction reduction collar shaft finish is plain steel.
5.4.2 Shaft Coupling Material: The pier tube shaft coupling material is factory crimped or plug-
welded to one end of the pier tube section and consists of 3.125-inch outer diameter by
0.180-inch nominal wall thickness hollow structural section in conformance with ASTM
A53 Grade B, Type E & S with a minimum yield strength of 35 ksi and a minimum tensile
strength of 60 ksi. The pier tube shaft coupling finish is plain steel.
5.4.3 External Sleeve: The central steel shaft of the external sleeve is 4.00-inch outer diameter
by 0.226-inch wall thickness hollow structural section in conformance with ASTM A500
Grade B or C with a minimum yield strength of 50 ksi and a minimum tensile strength
of 62 ksi. Two (2) bent steel stop plates are factory welded to one end of the external
sleeve. The plates are manufactured from 0.75-inch wide by 2.88-inch long by 0.25-
inch thick plate conforming to ASTM A36 with a minimum yield strength of 36 ksi and a
minimum tensile strength of 58 ksi. The external sleeve shaft finish is either plain steel
or hot-dip galvanized in accordance with ASTM A123.
5.4.4 Bracket: Retrofit bracket FS350BV is suitable for use with the PP350 push pier system.
The bracket finish is either plain steel or hot-dip galvanized in accordance with ASTM
A123. Bracket hardware finishes are zinc coated in accordance with ASTM B633.
