NS-1673 - Laserfiche WebLink

Home Browse Search

ORDINANCE NO. NS- 1673 PAGE ELEVEN FOOTNOTES: (1) Bolts and dowels to be tested as specified in Section 8-2006. (2) Bolts and dowels to be one-half inch minimum in diameter. (d) ALTERNATE MATERIALS. Alternate materials and methods of construction may be approved by the department in accordance with applicable provisions of Chapter 1 of Part 1 of the Uniform Building Code. (e) MINIMUM ACCEPTABLE QUALITY OF EXISTING UNREIN- FORCED MASONRY WALLS. (1) GENERAL PROVISIONS. Ail unreinforced masonry walls utilized to carry vertical loads and seismic forces parallel and perpendicular to the wall plans shall be tested as specified in this section. All masonry quality shall equal or exceed the minimum standards established herein or shall be removed and replaced by new materials. Alternate methods of testing approved by the deparment may be used. Nothing shall prevent pointing with mortar of all the masonry wall joints before the tests are first made. Prior to any pointing, the mortar joints must be raked and cleaned to remove loose and deteriorating mortar. All preparation and mortar pointing shall be done under the continuous inspection of the director with a subsequent written report to the department. All testing shall be performed by an approved testing agency in accordance with the requirements specified in this subsection. EXCEPTION: Unreinforced masonry walls which carry no design horizontal or vertical loads other than their own weight may be considered as veneer if they are adequately anchored to new supporting elements, in accordance with this section. (2) NUMBER AND LOCATION OF TESTS. The quality of mortar in all masonry walls shall be determined by performing in place shear tests or by testing eight inch (8") diameter cores. The minimum number of tests shall be two (2) per wall or line of wall elements resisting a common seismic force, one per one thousand five hundred (1,500) square feet of wall surface, or eight (8) minimum, whichever requires the largest number of tests or cores. The exact test or core location shall be determined at the building site by the licensed engineer or architect responsible for the seismic analysis of the subject building. The results of all tests or coring shall be recorded and reported.