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LRFD Section I2, 4 percent of the gross area of the section allows for the column to be designed in accordance with LRFD specifications.
2.3.5 Deformation Limits and Drift Requirements: The maximum out-of-plane deformation shall be 0.005h, where h is the wall height between supports. The maximum
in-plane story drift shall be 0.007h.
2.3.6 Connection Methods: The Cintec Pipe Anchor System is to be detailed in accordance with the applicable code. Holes shall be provided in horizontal pipe anchors
to accommodate interaction with vertical pipe anchors. Holes shall be provided in vertical pipe anchors to accommodate wall ties.
2.3.7 Foundation Connections: The foundation connection between the Cintec Pipe Anchor and the substructure shall be the responsibility of the registered design
professional and shall be detailed in accordance with the appropriate site/field conditions. The structural design shall comply with the applicable code, and structural engineering practice. Foundation connections shall be designed and installed for
each specific project.
2.3.8 Design Plans and Specifications: The design plans and specifications shall be prepared by a registered design professional. Cintec shall maintain a list of
registered design professionals qualified to perform the design in accordance with this report and its requirements, and only those authorized registered design professionals are allowed to utilize this system.
2.4 Installation:
Holes accommodating the anchors and wall ties shall be drilled into the concrete or masonry wall using nonpercussive drilling procedure. Wall tie holes measuring 3/4 inch (19 mm) in diameter are
drilled in the specified locations, and steel guides are inserted to assist in positioning anchor holes. Anchor holes measuring larger than the outside pipe anchor dimension are drilled through the wall, directed by the steel guides. Maximum
vertical anchor spacings are 24 inches (610 mm). After drilling, the base of the hole is enlarged using a taper drill. Pipe anchors are placed in the holes after all debris is removed. The steel guides are then removed and wall ties are placed
through the holes into the anchors. The wall ties are set in grout, which must cure before anchor interiors are |
injected with concrete. The drilling shall be performed only by Cintec qualified/certified drilling installers under the quality control supervision of Cintec personnel.
2.5 Quality Control and Special Inspection:
Each project shall incorporate a quality control program in accordance with Chapter 17 of the UBC or IBC. The preparation of anchors (holes and length) shall be done by fabricators approved by the building
official in accordance with Section 1701.7 of the UBC or Section 1704.2.2 of the IBC. Special inspection is required in accordance with Section 1701 of the UBC or Section 1704 of the IBC. The inspector’s duties include verifying that anchors were
prepared by an approved fabricator; that anchors, wall ties, and concrete comply with specifications; that there are proper drilling operations, proper anchor and wall tie placement, and proper concrete placement; and that concrete test specimens
are properly prepared. Under the IBC, quality assurance plans shall be submitted to the building official for approval as required by Sections 1705 and 1706.
3.0 EVIDENCE SUBMITTED
Structural calculations and installation instructions.
4.0 FINDINGS
That the Cintec Pipe Anchor Retrofit System for unreinforced masonry (URM) and nonductile concrete buildings described in this report complies with the 1997 Uniform Building Code™, the 1997 Uniform
Code for Building Conservation, and the 2000 International Building Code® (IBC), subject to the following conditions:
4.1 Design and installation are in accordance with this report, the manufacturer’s instructions and the applicable code.
4.2 Fire-resistance of the assembly must comply with Chapter 7 of the UBC or IBC. Fire protection for the assemblies shall be subject to building official approval.
4.3 Quality control is provided in accordance with Section 2.5 of this report.
This report is subject to re-examination in one year. |
