PUBLIC CODE CHANGE PROPOSAL FORM

FOR PUBLIC PROPOSALS TO THE INTERNATIONAL CODES

2012/2013 CODE DEVELOPMENT CYCLE

CLOSING DATES: Group A Codes: January 3, 2012

Group B Codes: January 3, 2013

*See Item 3 of these instructions for additional information concerning Group A and Group B Code

Development Committees Responsibilities*

1)

Name: Philip Brazil, PE, SE / Date: January 3, 2012
Jurisdiction/Company: Reid Middleton, Inc.
Submitted on Behalf of: Washington Association of Building Officials, Technical Code Development Committee
Address: 728 134th St. SW, Suite 200
City: Everett / State:WA / Zip Code: 98204
Phone: 425.741.5039 / Ext. / Fax: 425.741.3900
E-mail address (see # 4 below):

CODE CHANGE PROPOSAL FORM

Code: IBC –12/13

Table 1705.3, Table 1705.6, Table 1705.7, Table 1705.8

Proponent: Philip Brazil, P.E., S.E., Senior Structural Engineer, Reid Middleton, Inc., representing Washington Association of Building Officials, Technical Code Development Committee

Revise as follows:

TABLE 1705.3

REQUIRED VERIFICATION AND INSPECTION OF CONCRETE CONSTRUCTION

VERIFICATION AND INSPECTION / CONTINUOUS / PERIODIC / REFERENCED STANDARD a / IBC REFERENCE
1. Inspection of Inspect reinforcing steel, including prestressing tendons, and verify placement. / — / X / ACI 318: 3.5, 7.1–7.7 / 1910.4
2. Inspection of Reinforcing steel bar welding: in accordance with Table 1705.2.2, Item 2b. / — / — / AWS D1.4
ACI 318: 3.5.2 / —
a.  Verify weldability of reinforcing bars other than ASTM A 706;
b.  Inspect single-pass fillet welds, maximum 5/16”; and / — / —
X
c.  Inspect all other welds / X
2. Inspection of Inspect reinforcing steel welding in accordance with Table 1705.2.2, Item 2b. / — / — / AWS D1.4
ACI 318: 3.5.2 / —
3. Inspection of Inspect anchors cast in concrete where allowable loads have been increased or where strength design is used. / X / ACI 318: 8.1.3, 21.2.8 / 1908.5, 1909.1
4. Inspection of Inspect anchors post-installed in hardened concrete members. b / X / ACI 318: 3.8.6, 8.1.3, 21.2.8 / 1912.1
5. Verifying use of required design mix. / — / X / ACI 318: Ch. 4, 5.2–5.4 / 1904.2.2, 1910.2, 1910.3
6. At the time fresh concrete is sampled to During concrete placement, fabricate specimens for strength tests, perform slump and air content tests, and determine the temperature of the concrete. / X / — / ASTM C 172
ASTM C 31
ACI 318: 5.6, 5.8 / 1910.10
7. Inspection of Inspect concrete and shotcrete placement for proper application techniques. / X / — / ACI 318: 5.9, 5.10 / 1910.6, 1910.7, 1910.8
8. Inspection for Verify maintenance of specified curing temperature and techniques. / — / X / ACI 318: 5.11–5.13 / 1910.9
9. Inspection of Inspect prestressed concrete for:
a. Application of prestressing forces.; and
b. Grouting of bonded prestressing tendons in the seismic force-resisting system. / X
X / — / ACI 318: 18.20
ACI 318: 18.18.4 / —
10. Inspect erection of precast concrete members. / — / X / ACI 318: Ch. 16 / —
11. Verification of Verify in-situ concrete strength, prior to stressing of tendons in post-tensioned concrete and prior to removal of shores and forms from beams and structural slabs. / — / X / ACI 318: 6.2 / —
12. Inspect formwork for shape, location and dimensions of the concrete member being formed. / — / X / ACI 318: 6.1.1 / —

TABLE 1705.6

REQUIRED VERIFICATION AND INSPECTION OF SOILS

VERIFICATION AND INSPECTION TASK / CONTINUOUS DURING TASK LISTED / PERIODICALLY DURING TASK LISTED /
1. Verify materials below shallow foundations are adequate to achieve the design bearing capacity. / — / X
2. Verify excavations are extended to proper depth and have reached proper material. / — / X
3. Perform classification and testing of compacted fill materials. / — / X
4. Verify use of proper materials, densities and lift thicknesses during placement and compaction of compacted fill. / X / —
5. Prior to placement of compacted fill, observe inspect subgrade and verify that site has been prepared properly. / — / X

TABLE 1705.7

REQUIRED VERIFICATION AND INSPECTION OF DRIVEN DEEP FOUNDATION ELEMENTS

VERIFICATION AND INSPECTION TASK / CONTINUOUS DURING TASK LISTED / PERIODICALLY DURING TASK LISTED /
1. Verify element materials, sizes and lengths comply with the requirements. / X / —
2. Determine capacities of test elements and conduct additional load tests, as required. / X / —
3. Observe Inspect driving operations and maintain complete and accurate records for each element. / X / —
4. Verify placement locations and plumbness, confirm type and size of hammer, record number of blows per foot of penetration, determine required penetrations to achieve design capacity, record tip and butt elevations and document any damage to foundation elements. / X / —
5. For steel elements, perform additional inspections in accordance with Section 1705.2. / — / —
6. For concrete elements and concrete-filled elements, perform additional inspections in accordance with Section 1705.3. / — / —
7. For specialty elements, perform additional inspections as determined by the registered design professional in responsible charge. / — / —

TABLE 1705.8

REQUIRED VERIFICATION AND INSPECTION OF CAST-IN-PLACE DEEP FOUNDATION ELEMENTS

VERIFICATION AND INSPECTION TASK / CONTINUOUS DURING TASK LISTED / PERIODICALLY DURING TASK LISTED /
1. Observe Inspect drilling operations and maintain complete and accurate records for each element. / X / —
2. Verify placement locations and plumbness, confirm element diameters, bell diameters (if applicable), lengths, embedment into bedrock (if applicable) and adequate end-bearing strata capacity. Record concrete or grout volumes. / X / —
3. For concrete elements, perform additional inspections in accordance with Section 1705.3. / — / —

Reason:

This proposal is a continuation of separate proposals that:

1.  Correlate Tables 1705.2.2 and 1705.3.3 with ACI 318-11 (Sxx-12/13);

2.  Relocate the requirements for special inspection of reinforcing bar welding from Table 1705.2.2 to Table 1705.3.3 (Sxx-12/13); and

3.  Simplify the required extent of special inspection for the welding of reinforcing bars (Sxx-12/13).

The primary purpose for this proposal is to revise Tables 1705.6, 1705.7 and 1705.8 for consistency with Table 1705.3 and to clarify the scope of special inspections in Table 1705.3. The changes from “inspection” to “inspect” in Table 1705.3 are made to reduce confusion with the provisions in the building code for inspections by building inspectors and special inspections by special inspectors. The changes from “observe” to “inspect” in Tables 1705.6, 1705.7 and 1705.8 are made to reduce confusion with the provisions in the building code for structural observation, which have been reported to us by several code users. The changes are also made for consistency with the definitions of “special inspection” and “special inspector” in Section 202.

The current language In Item 6 of Table 1705.3 specifies the performance of slump and air content tests “at the time fresh concrete is sampled to fabricate specimens for strength tests.” The effect of this is that Table 1705.3 does not specify the sampling of fresh concrete for the purpose of performing strength tests and the proposal changes Item 6 to do so.

The current language in Item 9 of Table 1705.3 limits special inspections of the grouting of bonded prestressing tendons to those that are elements of the seismic force-resisting system. In our judgment, it is equally important that the grouting of these tendons be subject to special inspections where they are elements of gravity or wind force-resisting systems and the proposal changes Item 9(b) to do so.

For Item 2 in Table 1705.3, our intent for the dashes opposite the charging language is that they be deleted.

Note that a separate proposal also makes several modifications to the title and column headings of Table 1705.3 that are related to special inspections and tests as well as continuous and periodic special inspection and the final language the title and column headings from that proposal is shown below (Sxx-12/13).

TABLE 1705.3

REQUIRED SPECIAL INSPECTIONS AND TESTS OF CONCRETE CONSTRUCTION

TYPE / CONTINUOUS
SPECIAL
INSPECTION / PERIODIC
SPECIAL
INSPECTION / REFERENCED STANDARD a / IBC REFERENCE

Cost Impact: The code change proposal will not increase the cost of construction.

Public Hearing: Committee: AS AM D

Assembly: ASF AMF DF