0614

CHAPTER 4: EROSION AND SEDIMENT CONTROL MEASURES AND BMP’S 4-44 CHAPTER 4: EROSION AND SEDIMENT CONTROL MEASURES AND ...

2 downloads 52 Views 731KB Size
CHAPTER 4: EROSION AND SEDIMENT CONTROL MEASURES AND BMP’S

4-44

CHAPTER 4: EROSION AND SEDIMENT CONTROL MEASURES AND BMP’S

4.2.2 Oak Mats A stabilized platform, located at specified points of construction for the purpose of temporary or permanent ingress and egress. Oak Mats have two benefits: reduce overall tracking from construction sites, and creates a stable pad for heavy equipment, especially when working around sensitive areas such as Wetlands and streams. Advantages •= Provides a solid working platform •= Reduces tracking •= Significantly lighter then conventional steel sheets •= Can be used over several times •= Lifting cables for easy of loading and unloading •= Excellent alternative for linear projects Disadvantages •= Not suitable for all construction sites •= Depending upon the site, can be expensive •= Will deteriorate with age Design Criteria •= Dimensions: 8’x16’x4 ½ “ (3 Ply Laminated oak) •= Built-in lifting cables at each end •= Used for temporary or permanent access •= Built to withstand heavy equipment such as cranes, dump trucks, and back hoes •= On linear projects that parallel streams or wetlands install as a continuous working pad to reduce soil “pumping” •= Minor excavation of surface area may be required prior to installation of mats Inspection & Maintenance •= Requires on-going inspection •= Remove any soil deposits from equipment and vehicles •= Immediately sweep up and remove any material that has be tracked onto public streets •= Remove and replace mats when they no longer stable or wood become broken or separated •= Check lifting cables to make certain they are in working order

4-45

CHAPTER 4: EROSION AND SEDIMENT CONTROL MEASURES AND BMP’S

4-46