Waltham Housing Authority - Commbuys
Chesterbrook Cast Iron vent pipe riser clamps
Installation of plumbing vent piping friction clamps on cast iron plumbing vent pipes at joint between pvc vent pipe to cast iron pipe in the attic at state aided development: chesterbrook gardens **** in Waltham, Massachusetts. installation of 50 approximately 4. 5 inch diameter or equivalent support friction clamps at the transition from pvc to cast iron venting pipe. This is to eliminate or reduce the weight of cast pipe cracking pvc below and TYS connections farther down. The transition area is located inside the attic above one unit in the back- to- back 2nd floor bathrooms. Access is gained by a attic scuttle door and a portable ladder is required. The majority of cast vent pipes can be supported using a riser clamp and some others will need minor bracing with 2x4s while others might need unistruts brackets.
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