The South Carolina Department of Parks, Recreation, and Tourism (SCPRT) is seeking qualified providers to install a new vapor barrier, re-insulate and conduct a mold treatment on a crawlspace for ranger residence at Lake Greenwood State Park. The successful contractor will be responsible for providing all necessary materials, equipment, labor, and experience needed for the remediation of mold, installation of new batt insulation and install of vapor barrier on the residence. GN-1 Ranger Residence-Approximately 1,500 sq. ft. Prep Work & Installation Requirements Removal of all debris (that inhibits installation or structural integrity of crawlspace encapsulation) and existing floor joist insulation Successful contractor is responsible for the removal and proper disposal of all debris from property Mold remediation/treatment on floor joist Treatment of floor joist with a cleansing agent (YCS Cleaner – Enzyme and Microbe Agent or similar approved cleaner/agent) Removal of existing biofilm on any surfaces Utilizing a HEPA vacuum and brush or comparable method(s) Install a sump pump with perforated basin at lowest point in crawlspace. Specifications for anticipated Unit Liberty Pump CSP-237; Crawl Space Sump Pump Kit w/ 16.5" x 15" Basin, 1/3 HP Sump Pump w/ 10' cord, 24ft Drain Hose & Check Valve, 1/3 HP, 115V or approved equal. Dig out trench for the basin Install an appropriately sized PVC discharge line (anticipated 1 ½ inch) with check valve piped to foundation exterior. Sleeve and seal any wall penetration with caulking and an IPS plate Trench and extend discharge pipe at least 15ft from homes foundation and install a pop-up emitter at the end of the discharge pipe. Ensure that the discharge has a drainage away from the house or other structures. The contractor shall be responsible for any necessary electrical improvements. Install a strip drainage system around crawlspace interior Dig out approximately 170 linear feet of trench This trench will be dugout to the inside of the foundation wall at a minimum of 10” wide and at a minimum depth of 8” deep Install a strip drainage system Strip Drainage system to flow into sump pump YCS “Strip” Drainage System or other approved system covered in a non-woven fabric Strip Drainage system to flow into sump pump Fill trench/ pour gravel on top of strip drainage system Backfill material - #57 Stone Electrical circuit installation All electrical work must be in accordance with National Electrical Code Install a new electrical circuit (breaker) of appropriate size in the existing panel Install new wiring rated for the applications below that connect to the new electrical circuit (breaker). Install two (2) junction boxes with three (3) outlet plugs. Junction boxes are to be mounted to floor joist or foundation wall Install one (1) (GFCI) outlet mounted above the sump pump Install one (1) (GFCI) outlet mounted above the dehumidifier Install one (1) GFCI outlet located at the crawlspace entrance Encapsulate the entire crawlspace Seal off all 18 foundation vents and any other foundation penetrations with black foam board (minimum 2”) and expansion foam per industry standards Wrap 14 foundation piers Wrap and secure with a 14-mil 100% woven reinforced vapor barrier Seal all seams, bases and tops of piers with seam tape; minimum 4’ seam tape Wrap approximately 170 linear feet of foundation wall Wrap and secure with a 14-mil 100% woven reinforced vapor barrier Seal all seams with manufacturer approved seam tape and adhesive; minimum 4’ seam tape Install a 14-mil 100% woven reinforced vapor barrier across approximately 1,500 sq ft of crawlspace floor Secure/ pin vapor barrier throughout to prevent movement Seal all penetration/tear/rips per the manufacturer's recommendations; minimum 4’ seam tape Seal all seams with seam tape per the manufacturer's recommendations; minimum 4’ seam tape Install a dehumidifier Basis of Design Aprilaire Model E100 Whole House Automated Dehumidifier or approved equal Install and set up dehumidifier per manufactures’ recommendations. Install a condensation discharge from unit to the sump pump basin Install a wireless hydrometer to monitor humidify of crawlspace Structural Work Sister rotten or damaged floor joist Estimated 421 liner feet (2x8’s) Install supplemental girder beams Estimated 44 linear feet each (two - 4x6) Layout 2 separate supplemental girder beams, spanning the length of the house Nail pattern for scab/sister 3-inch 16-penny nails staggered no more than 16inches apart, staggered along the length of the combined joist Hanger/ledger connection These would be attached the same way the original joist was attached above the sill plate and attached to the band joist Install approximately eight (8) supplemental piers - engineered manufactured footers to create a solid base for structural jacks to support girder beams along with pier support columns. Maximum span between piers for girder beam is not to exceed 6 feet Pier footings should consist of 24” round composite footing pad with a capacity exceeding 8,000lbs. Pier support columns should consist of an adjustable crawlspace jack support column These adjustable support columns should be comprised of a steel tube column with a base plate at one end and an adjustable screw assembly top plate at the other end. The adjustable screw assembly consists of a base plate, intermediate plate, threaded rod and a top plate. Install approximately eight (8) structural, permanent installation jacks to support girder beam Base plates of jack will be secured to the middle of the manufactured footer Steel piers are topped with an adjustable threaded post cap and is to be adjusted to desired height Secure top plate and fasten saddle plate to girder beam Reinsulate the floor joist using new open-faced R-19 fiberglass insulation, securing with insulation hangers
