1903 OAKES AVE 2018-04-13 - Laserfiche WebLink

DRAWN BY: GENERAL NOTES ELmEcH A. PURPOSE The intent of the Plan is to promote public safety and welfare by reducing the risk of earthquake—induced Torque—set anchor is an expansion bolt whose wedge or sleeve engages the concrete base material in the drilled „ damage in existing wood frame residential buildings. The requirements in this plan define a minimum hole by the application of torque and where the amount of torque applied controls the degree of anchorage. industrial vices LLC recommended standard for the retrofit of these existing buildings. Damage to homes in past earthquakes Ma and{Washington DC I Aon VA show that incorrect or incomplete retrofits are as bad as having no retrofit at all. Use of this standard E. MATERIALS plan is intended to improve building performance during earthquake shaking, but will not necessarily eliminate Adhesive packaging: The packaging for each adhesive shall be marked with the manufacturer's name and address, 410-530-5364 earthquake damage. The primary purpose is to reduce the likelihood that these buildings will fall off their lot number of date or packaging, shelf life or expiration date, name of the quality control agency, and instructions foundations. for installation. No adhesive shall be used after its expiration date. D. DEFINITIONS Anchors, including chemical and mechanical: all adhesive or mechanical anchors shall have a minimum normal load NOTES: Anchor side plate is a metal plate or plates used to connect the sill plate or floor framing to the side of a concrete capacity of 635 lbs. for 1/2 inch bolts and 980 lbs. for 5/8 inch bolts in 2000 psi concrete at the installed edge stem wall when conditions prevent chemical anchor or expansion bolt installation vertically through the sill plate. distance and depth of embedment. All proprietary anchors shall have current ICC or equivalent approval. Approval is current product acceptance under an ICC (International Code Council) evaluation report or Anchor side plate: All anchor side plates shall be galvanized when exposed to weather. The minimum seismic equivalent adjusted load capacity for shear in the direction of the sill plate must meet or exceed a capacity of 1260 lbs when substituted for 5/8 inch bolts and 840 lbs when substituted for 1/2 inch bolts. Other products with lower approved Chemical anchor is a fastener placed in hardened concrete that derives its holding strength from a chemical capacities may be used if their required spacing is reduced proportionately by the ratio of their strength to the adhesive compound placed between the wall of the hole and the embedded portion of the anchor. Chemical strength requirement above. For example, (400 lbs/840 lbs) x 72 in. o.c. = 34 in. o.c. instead of 72 in. o.c. for anchor compounds are organic compounds comprised of resin and hardener, that form adhesives when blended one—story using an anchor side plate with allowable values of 400 lbs instead of 840 lbs or greater. Anchor side plates together. Examples of chemical adhesive compounds include epoxies, polyurethane, polyesters, methyl shall be attached to the concrete stem wall with a minimum of two 1/2 inch approved anchors. The number of methacrylate and vinyl esters. mechanical or adhesive anchors used must have a total shear capacity in concrete equal or greater to the value for the foundation anchor requirement above. Embedment depth is the depth of the anchor into the concrete Chemical anchor rod materials: All chemical anchors shall use all—thread rod manufactured from ASTM A36 or Expansion bolt is a mechanical fastener placed in hardened concrete designed to expand in a pre—drilled hole of a SAE 1018 material to meet the mechanical requirements of ASTM A307. All thread rods shall be free of oil, specified size and engage the sides of the hole in one or more locations to develop shear and/or tension resistance scale and rust The use of smooth or partially threaded rods or bolts is prohibited. SEAL to applied loads without grout, adhesive or drypack. Concrete: All new concrete for replacement footings shall be of 2500 psi minimum compressive strength. No Holdown: Hardware used to resist overturning and tension forces. Installed in pairs at the opposite ends of special inspection is required. structural panel framing, holdowns connect the stud framing to the concrete foundation. Holdowns require chemical anchoring and are not a replacement for typical foundation anchor bolts. The capacity to resist tension/uplift force Framing clips: All framing clips shall be of minimum 18 gauge galvanized steel and approved under ICC or equivalent per holdown must meet or exceed 3,000 lbs. Refer to manufacturer for additional requirements and installation for wood frame construction. The seismic load capacity in the long direction must meet or exceed 450 lbs. in dry recommendations. lumber. The fasteners must be (12) 8d common x 1-1/2 inch nails unless otherwise approved j6 x 1-1/2 inch flat head wood screws may be used at existing rim joist, blocking or top plate connections. Installation torque is the minimum moment applied to a torque—set anchor that creates the degree of anchorage required for full load values. Lumber. All new lumber installed for joist blocking shall be a minimum of nominal two inch Hemfir f2 or better as graded under Western Wood Products Grading Rules. All lumber in contact with concrete shall be pressure Mechanical Anchor. A fastener placed in hardened concrete that derives its holding strength by a mechanical treated hem fir for new stem walls and for sill plate replacements over 10% of the wall length. Replacement of interface between the anchor and the walls of the concrete hole without grout, adhesive, or drypack. Examples sill plate less than 10% of the wall length may use the same lumber species as the existing materials. All existing of mechanical anchors include expansion bolts and screw anchors. lumber shall be free of defects including dry rot, mildew, excessive wane, warping and insect infestation or ENGINEER: damage. Damaged lumber must be replaced and the source of water or insect intrusion removed. Minimum concrete edge distance is the measure between the free edge of the concrete and the centerline of theplate washers 3/16 x 3 x 3 square plate washers are required Standard circular cut washers shall not be used to bolt at which the concrete will not break away when the anchor is set or loaded in service. For minimum edgedistances for anchors refer to manufacturer. connect sill plates to concrete sten walls. Washers ifurpished,with the oroarietary anchors shall not be used. Beveled washers shall be used on anchors drilled at an angle exceeding 6 degrees from vertical and shall be placed Oriented strand board (OSB) is a mat—formed wood structural panel composed of thin rectangular wood strands or over the plate washers. wafers arranged in oriented layers and bonded with waterproof adhesive. Reinforcing bac ASTM A615 Grade 40 or 60 IC Pony wall is a wood—framed stud wall extending from the top of the foundation to the underside of the lowest Structural panels (Sheathing): All plywood shall be graded under United States Voluntary Product Standard & shall 206-784-7275 floor framing. Also called a cripple wall or a knee wall. meet IBC 2306.1. All structural panel sheathing used for wall bracing shall be nominal 1/2 inch (eg. 15/32 inch plywood, 7/16 inch OSB) APA Rated Sheathing, or CDX. Sheathing of 4—ply or better is required. 7/16 inch Oriented Screw Anchor. A mechanical fastener with hardened self—undercutting, threaded teeth, designed to screw into a pre—drilled hole of a specific size in hardened concrete, achieving shear and/or tension resistance by a threaded Strand Board (OSB) is acceptable provided studs are spaced a maximum of 16 inch o.c. or panels are installed with _t . .- interlock between its teeth and the concrete hole without grout, adhesive, or drypack.. the long dimension across studs. Snug tight is the condition when the full surface of the plate washer is in contact with the wood member and Structural panel fasteners Nails shall be 8d common (.131 inch x 2-1/2 inch) with full heads (.281 inch). begins to slightly indent the wood surface. F. REPLACEMENT OF EXISTING FO011NGS & STEM WALLS Structural panel in the standard plan refers to a product composed primarily of wood and meeting the 1. Deteriorated, cracked or unreinforced masonry footings may be replaced as shown on this plan provided �- proper shoring is provided. The method of shoring and sequence of its construction shall be the responsibility of z requirements of the applicable standard PSI & PS2 per IBC Section 2306.1, induding all—veneer theperson performingthe work and shall not weaken the structure so as to be a threat to the safetyof its SEls, 3' , plywood and OSB. 1 ` N. • occupants or passers nearby. RETROFIT it REM•IELING ----'' as