Remember - More details = better answers Hello All, I've been asked to supply distances between draw-in chambers for a large job. It provides full details on everything you need to know. If excavation work interrupts the natural drainage of surface water (such as streams), diversion ditches, dikes, or other suitable means shall be used to prevent surface water from entering the excavation and to provide adequate drainage of the area adjacent to the excavation. Sink discharge hole (vertical): About 16 to 20 inches above the floor; consider the drain pipe to be the vertical centerline. The inside surface of the HH shall be sealed using an approved bituminous product. Plenty of advice. I personally go for 150 mm or 1D of the larger pipe. Lift HH / MH covers using your legs and place the cover at least 2 m (6.5 feet) away from the opening. This equipment shall be attended when in use. Also learn about how utility supplies should be spaced and what colours utility pipes and cables need to be. Cj\|;YMP*'vnixrvAy[ h~.|]7n4/-^ o@PCZfaB\@^~>%\Px?0XQe@9 a"D S"xTwD8iJVyba&P"l(df&_:Y;X6QCq`L~t^Q0xQWMv,hITl$%QNIby=d-3W9Xo:dx endobj Unless you live in an off-grid property, in most cases, your home should have dedicated supplies of water, gas, electricity and telecommunications such as a phone line and broadband and possibly cable TV. In addition to the requirements set forth in subparts D and E of this part (29 CFR 1926.50 - 1926.107) to prevent exposure to harmful levels of atmospheric contaminants and to assure acceptable atmospheric conditions, the following requirements shall apply: Where oxygen deficiency (atmospheres containing less than 19.5 percent oxygen) or a hazardous atmosphere exists or could reasonably be expected to exist, such as in excavations in landfill areas or excavations in areas where hazardous substances are stored nearby, the atmospheres in the excavation shall be tested before employees enter excavations greater than 4 feet (1.22 m) in depth. When laying MDPE water supply pipe, it should be laid at a minimum of 750mm and a maximum of 1350mm below finished ground level. At a minimum of 75mm above the pipe, warning tape is then laid along the entire length of the run to warn of the pipes presence. -Proximities. When running a gas main supply pipe underground the HSE specifies it should be at least 750mm deep in a verge or road, but 600mm deep for a footpath. All excavated material and equipment must be placed and demarcated in such a way to not inconvenience vehicles and pedestrians.