ISO 21573-1:2024
(Main)Building construction machinery and equipment — Concrete pumps — Part 1: Commercial specifications
Building construction machinery and equipment — Concrete pumps — Part 1: Commercial specifications
This document establishes the content for commercial specifications for concrete pumps which are used on building sites for concrete-mix delivery.
Machines et matériels pour la construction des bâtiments - Pompes à béton — Partie 1: Spécifications commerciales
General Information
Relations
Standards Content (Sample)
International
Standard
ISO 21573-1
Third edition
Building construction machinery and
2024-08
equipment — Concrete pumps —
Part 1:
Commercial specifications
Reference number
© ISO 2024
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ii
Contents Page
Foreword .iv
Introduction .vi
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Classification of the concrete pumps . 2
5 Commercial specifications . 4
5.1 General characteristics .4
5.2 Applicable concrete .5
5.3 Drive.5
5.4 Dimensional characteristics .5
5.5 Cleaning system . . .6
5.6 Distributing boom .6
5.7 Outrigger component . .6
5.8 Hydraulic system .7
5.9 Truck chassis .7
5.10 Trailer chassis .8
5.11 Attachments and tools .8
Annex A (informative) Examples of concrete pump designs and their assemblies . 9
iii
Foreword
ISO (the International Organization for Standardization) is a worldwide federation of national standards
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The procedures used to develop this document and those intended for its further maintenance are described
in the ISO/IEC Directives, Part 1. In particular, the different approval criteria needed for the different types
of ISO document should be noted. This document was drafted in accordance with the editorial rules of the
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This document was prepared by Technical Committee ISO/TC 195, Building construction machinery and
equipment, Subcommittee SC 1, Machinery and equipment for concrete work.
This third edition cancels and replaces the second edition (ISO 21573-1:2014), which has been technically
revised.
The main changes are as follows:
— in Clause 3:
— the definition for “maximum theoretical pumping output” has been updated;
— the definitions for the following terms have been added:
— maximum delivery pressure;
— outrigger span;
— in Table 1, the new classification “drive system” with the following sub-items has been added:
— fuel engine driven;
— electric power driven;
— hybrid power driven;
— in Table 1, the new type “crawler” with sub-item "crawler pump" has been added in the “Mode or
frequency of transportation” row;
— in Table 1, the new classification “Type of piston-type concrete pump valve system” with the following
sub-items has been added:
— Swing valve;
iv
— Gate valve;
— in Clause 5, the following subclauses have been updated to match the content in ISO 21573-2:
— general characteristics (5.1);
— dimensional characteristics (5.4);
— distributing boom (5.6);
— outrigger components (5.7);
— in Annex A, Figure A.15 has been added.
A list of all parts in the ISO 21573 series can be found on the ISO website.
Any feedback or questions on this document should be directed to the user’s national standards body. A
complete listing of these bodies can be found at www.iso.org/members.html.
v
Introduction
This document deals with concrete pumps used on building sites for concrete-mix delivery. It defines
technical characteristics of the relevant machines. Annex A provides examples of current structures of
concrete pumps and their principles of operation.
vi
International Standard ISO 21573-1:2024(en)
Building construction machinery and equipment —
Concrete pumps —
Part 1:
Commercial specifications
1 Scope
This document establishes the content for commercial specifications for concrete pumps which are used on
building sites for concrete-mix delivery.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content constitutes
requirements of this document. For dated references, only the edition cited applies. For undated references,
the latest edition of the referenced document (including any amendments) applies.
ISO 11375:1998, Building construction machinery and equipment — Terms and definitions
ISO 21573-2:2020, Building construction machinery and equipment — Concrete pumps — Part 2: Procedure for
examination of technical parameters
3 Terms and definitions
For the purposes of this document, the terms and definitions given in ISO 11375 and the following apply.
ISO and IEC maintain terminology databases for use in standardization at the following addresses:
— ISO Online browsing platform: available at https:// www .iso .org/ obp
— IEC Electropedia: available at https:// www .electropedia .org/
3.1
piston-type concrete pump
pump in which a piston is used to impart energy to the concrete mix, with the intent of transporting the mix
to and through the conveying pipe and/or hose
Note 1 to entry: See Figure A.1.
3.2
rotary-type concrete pump
pump in which a peristaltic action is used to impart energy to the concrete mix with the intent of transporting
the mix to and through the conveying pipe and/or hose
Note 1 to entry: See Figures A.6, A.7, A.8 and A.9.
3.3
stationary-type concrete pump
skid, rail or wheeled-chassis mounted concrete pump intended for long-term operation on one building site
Note 1 to entry: See Figure A.13.
3.4
piston-type concrete pump valve system
system composed of cut-off valves successively locking and opening concrete mix flow from the hopper to
the concrete cylinder and from the latter to the conveying pipe
Note 1 to entry: See Figures A.2, A.3, A.4 and A.5.
Note 2 to entry: The operation of the valves is synchronized so that, when the concrete-mix flow from the hopper to
the concrete cylinder is opened, the flow to the conveying pipe is closed. Various types of valve systems are identified.
3.5
distributing boom
folded boom with fixed concrete mix conveying pipe the role of which is to deliver concrete mix to work
areas within its reach
Note 1 to entry: See Figures A.10 and A.14.
Note 2 to entry: The boom has the possibility of folding in the vertical plane and slewing around the vertical axis.
Typically, a rubber hose is fixed to the end of the conveying pipe to facilitate concrete-mix distribution.
3.6
maximum applicable size of aggregate
largest size of aggregate that can be consistently delivered through the concrete pump without blockage,
including any conveying pipe that is normally supplied on the finished product
3.7
minimum applicable slump
minimum value of slump applicable for conveying by concrete pump
3.8
maximum theoretical pumping output
maximum theoretical volume of concrete per hour calculated based on the designed values of the delivery
mechanism of the concrete pump
3.9
maximum delivery pressure
maximum pressure in the delivery line system including the case of blockage in the delivery line system
3.10
outrigger span
actual distance between adjacent centrelines of vertical cylinders with outriggers fully extended or
projection distance of the actual distance on the reference plane
Note 1 to entry: The outrigger span shall be measured in accordance with ISO 21573-2:2020, Clause 10.
4 Classification of the concrete pumps
In general, concrete pumps are classified by the following five main characteristics (see Table 1):
— type of pumping unit;
— type of piston-type concrete pump valve system;
— mode or frequency of transportation;
— form of conveying;
— concrete mix delivery with assistance;
— drive system.
Table 1 — Classification of the concrete pumps
Classification Type Current examples Reference figures
Hydraulic driven Figure A.1
Mechanical driven —
Piston
Single-piston —
Type of pumping unit
Multi-piston Figure A.1
Vacuum Figure A.6, A.7
Rotary
Elastic Figure A.8, A.9
S-type Figure A.1
Swing valve C-type Figure A.4
Skirt-type Figure A.5
Structure and principle of
Type of piston-type con-
operation of the gate valve Figure A.2
crete pump valve system
system (horizontal type)
Gate valve
Structure and principle of
operation of the gate-valve Figure A.3
system (vertical type)
Figures A.10, A.11, A.14 and
Self-propelled mobile Truck-mounted
ISO 11375:1998, Figure 41
Trailer-mounted (with tires Figure A.12 and
on highway) ISO 11375:1998, Figure 42
Non self-propelled
Trailer-mounted, steel
mobile —
Mode or frequency of trans-
wheels (rides on rails)
portation
Trailer-mounted, track —
Skid-mounted/Fixed in place Figure A.13
Stationary
Trailer mounted (with tires
ISO 11375:1998, Figure 42
off-road)
Crawler Crawler pump Figure A.15
Form of conveying Figure A.10, A.14 and
Truck mounted
With integral distribut-
ISO 11375:1998, Figure 41
ing boom
Trailer-mounted ISO 11375:1998, Figure 43
Tower-mounted boom ISO 11375:1998, Figure 44
W
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