Monterey County Municipal Code Ch. 18.10 Existing Building Code

Footnotes:

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Editor's note— Ord. No. 5442, § 12, adopted Dec. 9, 2025, repealed Ch. 18.10, §§ 18.10.010—18.10.030, and enacted a new Ch. 18.10 to read as set out herein. Former Ch. 18.10 pertained to similar subject matter and derived from Ord. No. 5286, § 13, adopted April 18, 2017; Ord. No. 5337, §§ 2, 13, adopted July 28, 2020; and Ord. No. 5389, adopted Dec. 6, 2022.

That certain document entitled 2022 California Existing Building Code, California Code of Regulations, Title 24, Part 10 as published by the California Building Standards Commission based on Appendix Chapter A1, A3 and A4 of the 2021 International Existing Building Code, which is entitled Seismic Strengthening Provisions for Unreinforced Masonry Bearing Wall Buildings, with applicable amendments from the State of California, and the local amendments of this Chapter, are hereby adopted as the Existing Building Code for the County of Monterey.

(Ord. No. 5442, § 12, 12-9-2025)

Notwithstanding any provisions of the 2022 California Existing Building Code to the contrary, the local amendments set forth in this Chapter shall apply.

(Ord. No. 5442, § 12, 12-9-2025)

A. Test equipment. An internal caliper graduated in 0.001 of inch increments shall be used to measure movement of the masonry unit. A hydraulic jack equipped with a pressure gauge graduated in increments of fifty psi or less shall be used. The jack load shall be applied at a rate not exceeding five thousand pounds per minute.

B. Minimum number of technicians and test readings. The test shall be conducted by a minimum of two technicians. Load and displacement readings shall be recorded at the following intervals: caliper reading of 0.001 inch; first visually observed sign of movement or cracking of the mortar or masonry unit; caliper reading of 0.02 inch; and the ultimate load on the unit.

C. Representative test locations. The masonry unit to be tested shall not be located adjacent to a bond course in a brick wall laid in common bond. Tests to evaluate the mortar quality of structural walls shall not be conducted in masonry veneer.

D. Core Tests. A minimum number of mortar test specimens equal to the number of required cores shall be prepared from the cores and tested as specified herein. The mortar joint of the outer Wythe of the masonry core shall be tested in shear by placing the circular core section in a compression testing machine with the mortar bed joint rotated fifteen degrees from the axis of the applied load. The mortar joint tested in shear shall have an average ultimate stress of twenty psi based on the gross area. The average shall be obtained from the total number of cores made. If test specimens cannot be made from cores taken, the shear value shall be reported as zero.

E. Low mortar quality. Walls with mortar values which are consistently low and do not meet the minimum quality values specified in this Chapter shall be entirely pointed per Uniform Building Code Standard 21-8 except that the depth of joint penetration shall be one and one-half inch (38 mm) in lieu of the three-fourths inch (19 mm) specified.

(Ord. No. 5442, § 12, 12-9-2025)