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Dob Code Unbraced Wall Maximum Height

Dob Code Unbraced Wall  Maximum Height. Units Solid Masonry Joints Ashlar Masonry
D felt shall be applied horizontally, with the upper layer lapped over the lower layer not less than 2 inches horizontally. Where vertical joints occur, felt paper shall be lapped not less than 6 inches.

This video shows the sequence of construction of the new reinforced masonry wall system.Maximum CMU wall height – Dob Code Masonry Unbraced Wall Height

Dob Code Unbraced Wall  Maximum Height. Units Solid Masonry Joints Ashlar Masonry

Perhaps a short consultation with a local structural engineer would be beneficial. Balconies, landings, exterior stairways, occupied roofs and similar surfaces exposed to the weather and sealed underneath shall be waterproofed and sloped a minimum of ¼ unit vertical in 12 units horizontal for drainage.

The detectors may be battery operated when installed in existing buildings, and are not required to be interconnected. No habitable room except kitchens shall be less than 7 feet in any dimension. In rooms with sloping ceilings, the required ceiling height shall be provided in at least 1/2 of the room and no portion of any room having a ceiling height of less than 5 feet shall be considered as contributing to the minimum area required.

An attic in which a warm-air furnace is installed shall be accessible by an opening and passageway as large as the largest piece of equipment but not smaller than 30 inches by 30 inches.

Such a door cannot open into a sleeping room. The largest tread run or riser height within any flight of stairs shall not exceed the smallest by more than 3/8 inch. The handgrip portion of handrails shall not be less than 1-1/4 inches and not more than 2 inches. Handrail ends shall return to a wall or newel post. Landings shall have a dimension measured in the direction of travel equal to the width of the stairway. A door may open at a landing that is not more than 8 inches lower than the floor level provided the door does not swing over the landing.

Interior bearing walls in one-story buildings may be supported on piers, 14 inches by 14 inches, shall extend at least 8 inches into the natural ground and project not less than 8 inches above finish grade.

Sills must be placed under all walls or partitions that rest on concrete or masonry. Solid blocking shall be 2-inch nominal thickness and the full depth of the joist. End joints in double top plates shall be offset at least 48 inches. Where plumbing, heating, or other pipes are placed in a partition necessitating the cutting of the plates, a metal tie of not less than 1/8 inch thick and 1-1/2 inches wide shall be fastened to the plate across to each side of the opening with not less than six 16d nails.

Code for new construction except as hereafter stated. Code for new buildings or structuresor shall be entirely demolished. Buildings and structures, and parts thereof, shall bemaintained in a safe and sanitary condition. Words used in the masculine gender include the feminine andthe feminine the masculine. For buildings or structures having no wall adjoining the street,
the average level of ground (finished surface) adjacent to the exteriorwalls of the building or structure.

Masonry means masonry without hollow spaces. Repair means the reconstruction or renewal of any part ofan existing building for the purpose of its maintenance. Construction value shall not include land purchasecosts. This shall include all areas that could be used asfinished or occupied areas with future alterations. Reinforcing bars to be welded and welding procedure. Size and location of structural elements. Provisions for dimensional changes resulting from elastic deformation, creep, shrinkage, temperature and moisture. The construction documents shall describe in sufficient detail the location, size and construction of masonry fireplaces. Metal rod, wire or strap that secures masonry to its structural support. The area delineated by the out-to-out specified dimensions of masonry in the plane under consideration. The area of masonry units, grout and mortar crossed by the plane under consideration based on out-to-out specified dimensions. A masonry unit made of sand and lime. A masonry unit made of clay or shale, usually formed into a rectangular prism while in the plastic state and burned or fired in a kiln.

A projecting part of a masonry wall built integrally therewith to provide lateral stability. A void space having a gross cross-sectional area greater than 11/2 square inches (967 mm2). A primarily vertical enclosure containing one or more flues used to remove hot gases from burning fuel, refuse, or from industrial processes to the outside atmosphere.

A field-constructed chimney of solid masonry units or stones. An opening to the bottom of a grout space of sufficient size and spacing to allow the removal of debris. The measured dimension of a masonry unit or element. A dimension equal to a specified dimension plus an allowance for the joints with which the units are to be laid. A hearth and fire chamber or similar prepared place in which a fire may be made and which is built in conjunction with a chimney.

City of Medford Oregon – Municipal Code

Dob Code Masonry Unbraced Wall Height
A masonry unit that connects two or more adjacent wythes of masonry. Ashlar masonry laid in courses of stone of equal height for each course, although different courses shall be permitted to be of varying height.

Masonry in which the tensile resistance of the masonry is taken into consideration and the effects of stresses in reinforcement are neglected. Ashlar masonry laid in courses of stone set without continuous joints and laid up without drawn patterns. Masonry construction in which reinforcement acting in conjunction with the masonry is used to resist forces. Masonry consisting of solid masonry units laid contiguously with the joints between the units filled with mortar. A building unit or block larger in size than 12 inches by 4 inches by 4 inches (305 mm by 102 mm by 102 mm) made of cement and suitable aggregates.

A plastic mixture of approved cementitious materials, fine aggregates and water used to bond masonry or other structural units. An assemblage of masonry units and mortar with or without grout used as a test specimen for determining properties of the masonry. The outer portion of a hollow masonry unit as placed in masonry. For the purpose of this code, requirements for stack bond shall apply to masonry laid in other than running bond. Nominal strength multiplied by a strength reduction factor. A vertical element with a horizontal length-to-thickness ratio greater than three, used to enclose space. A wall built of concrete masonry units where the units are stacked dry, without mortar on the bed or head joints, and where both sides of the wall are coated with a surface-bonding mortar.

A wall built of masonry units so arranged as to provide an airspace within the wall, and in which the facing and backing of the wall are bonded together with masonry units.

The part of any wall entirely above the roof line. An interior solid portion of a hollow masonry unit as placed in masonry. Each continuous, vertical section of a wall, one masonry unit in thickness. Hollow glass units shall be partially evacuated and have a minimum average glass face thickness of 3⁄16 inch (4.8 mm). Second-hand masonry units shall not be reused unless they conform to the requirements of new units. Old mortar shall be cleaned from the unit before reuse. Re-tempering of mortar for glass unit masonry shall not be permitted after initial set. This aggregate ratio (measured in damp, loose condition) shall notbe less than 2¼ and notmore than 3 times the sum of the separate volumes of cementitious materials.

Reductions for group action, where necessary. Total and differential settlement. Increases in soil lateral pressures on retaining walls. Expected total and differential settlement. The sequence of installation shall be identified in the approved construction documents. In coastal high hazard areas, unless such fill is conducted and/or placed to avoid diversion of water and waves toward any building or structure. The drain shall extend a minimum of 12 inches (305 mm) beyond the outside edge of the footing. The top of the drain shall be covered with an approved filter membrane material. The top of joints or the top of perforations shall be protected with an approved filter membrane material. Section 1805.4.1, and shall be covered with not less than 6 inches (152 mm) of the same material. Table 1806.2 shall be permitted to be increased by the tabular value for each additional foot (305 mm) of depth to a maximum of 15 times the tabular value.

Concrete cover for reinforcement measured from the inside face of the wall shall not be less than ¾ inch ( 19.1 mm). The unfactored axial load per linear foot of wall shall not exceed 1.2t f’c where t is the specified wall thickness in inches.

The bar shall be anchored to develop fyin tension at the corners of openings. Solid grouted hollow units or solid masonry units. Where a keyway is extended below the wall base with the intent to engage passive pressure and enhance sliding stability, lateral soil pressures on both sides of the keyway shall be considered in the sliding analysis.

The frictional resistance for structural walls and slabs on silts and clays shall be limited to one-half of the normal force imposed on the soil by the weight of the footing or slab.


How To Build A Retaining Wall And Reasons They Fail

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Category: General Masonry, Brick Walls, Masonry Construction, Masonry Units, Mortar
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