ANSI/ASSE A10.9-1997(R2004)– BACKGROUND MATERIALS

ASSE, as secretariat of the A10 ANSI Accredited Standards Committee (ASC) for Construction and Demolition Operations, has continued to receive a number of inquiries related to ANSI/ASSE A10.9-1997(R2004) American National Standard Safety Requirements for Concrete and Masonry Work.

Due to these inquiries, we have put together a “guide” for those with interest.

Title: Safety Requirements for Concrete and Masonry Work

Scope: Establishes safety requirements pertaining to concrete construction and masonry work in construction. Covers all on-site concrete construction and masonry work including design, erection, operation, and maintenance of aggregate processing plants, concrete mixing plants, and conveyances. Also contains safety requirements pertinent to the specialty concrete operations of prestressing by pretensioning or post tensioning, lift-slab construction, tilt-up construction, and slip forms.

Past Versions of the Standard:

A10.9-2004 (Reaffirmed)
A10.9-1998
A10.9-1990
A10.9-1983
A10.9-1970

ANSI approved the standard on June 23, 2004.

Table of Contents
SECTION
PAGE
1. General
10
 

1.1 Scope
1.2 Purpose
1.3 Exceptions
1.4 Interpretation
1.5 Application
1.6 Fall Prevention
1.7 Personal Protective Equipment
1.8 Design and Drawings
1.9 Project Safety Plan
1.10 Housekeeping
1.11 Access
1.12 Machine Guarding, Lockout/Tagout
1.13 Prohibited Uses of Reinforcing Steel

10
10
10
10
10
10
10
10
10
11
11
11
11

2. Definitions
11
3. Reinforcing Steel
13
 

3.1 General
3.2 Rigging
3.3 Guying
3.4 Wire Mesh
13
13
13
13
4. Cement Handling
13
 

4.1 General
4.2 Bulk Cement Transfer Facilities
4.3 Storage Facilities
13
13
13
5. Concrete Placement
14
 

5.1 General
5.2 Plant and Equipment
5.3 Cutting and Sandblasting
5.4 Concrete Placement
5.5 Patching, Finishing and Curing
5.6 Winter Protection

14
14
15
15
16
16
6. Vertical Shoring
16
 

6.1 General
6.2 Loads and Design
6.3 Field Practices
6.4 Removal
6.5 Tubular Welded Frame Shoring
6.6 Tube and Coupler Tower Shoring
6.7 Single Post Shores 19

16
16
17
18
18
19
19
7. Formwork
20
 

7.1 General
7.2 Loads
7.3 Formwork Design
7.4 Placing and Removal of Forms
7.5 Vertical Slipforms
7.6 Flying Deck Forms
7.7 Horizontal Shoring Beams

20
21
22
22
23
23
24
8. Prestressed Concrete
25
 

8.1 General
8.2 Pretensioning and Post-tensioning
8.3 Tendons
8.4 Fitting
8.5 Jacking

25
25
25
25
25
9. Precast Concrete
26
 

9.1 General
9.2 Storage
9.3 Handling and Erection
9.4 Temporary Support and Bracing
9.5 Falling Hazard

26
26
26
26
26
10. Lift-Slab Operations
26
 

10.1 General
10.2 Designing and Planning
10.3 Jacking Equipment
10.4 Uniform Lifting
10.5 Falling Hazard
10.6 Load Transfer

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27
27
27
27
27
11. Masonry Construction
27
 

11.1 General
11.2 Handling and Storage of Masonry Materials
11.3 Masonry Saws
11.4 Masons' Scaffolds
11.5 Shoring and Bracing
11.6 Limited Access Zones

27
27
28
28
28
28
12. Referenced and Related Standards
29
 

12.1 Referenced American National Standards
12.2 Other References
12.3 Further Information
12.4 Document Sources

29
30
30
31

Links:

OSHA Recognition:
Recognition of the Standard by the Occupational Safety and Health Review Commission:

http://www.oshrc.gov/decisions/html_1974/1329.html

Recognition by the U.S. Department of Energy:

http://www.eh.doe.gov/techstds/forum/tsm9902.pdf

Recognition of the Standard at the State Level:

http://www.mrsc.org/mc/wac/WAC%20296%20%20TITLE/WAC
%20296%20-155%20%20CHAPTER/WAC%20296%20-155%20-699.htm

http://www.leg.wa.gov/pub/wac/WAC%20296%20%20TITLE/WAC
%20296%20-155%20%20CHAPTER/WAC%20296%20-155%20-690.HTM

http://www.michigan.gov/documents/CIS_WSH_part25_35542_7.pdf