Revised Specifications - the Public Building Commission of Chicago

More documents

Recommendations

Info

Project Rev B_07/02/10 SECTION 15415 RAINWATER HARVESTING PART 1 - GENERAL 1.1 Provide a rainwater harvesting system as shown on Drawing P4.3 and described within this specification and specification section 02815. The system shall be of an approved design as fabricated by a manufacturer regularly engaged in the production of rainwater treatment equipment. All equipment and material shall be supplied in compliance with the specifications as intended for a complete and operational system. All equipment shall be provided by one supplier who will provide installation instruction and be available for on-site installation support. 1.2 The rainwater system is intended for the purpose of collecting rainwater from the roof of the building, filtering it, storing the filtered water in storage tanks, and preparing this water for subsequent use as supply water for toilet flushing and irrigation. 1.3 Only qualified manufacturers of rain water conditioning systems shall be considered for this project. Acceptable manufacturers are Water Harvesting Solutions, Inc. (Wahaso). PART 2 - GENERAL DESCRIPTION 2.1 The rainwater storage shall be located below grade utilizing tanks with a total volume of 20,000 gallons and includes a level sensor to indicate level and volume of stored water and a sump pump to send water to a day tank located in the building. 2.2 Incoming water from roof collection shall pass through a Vortex Filter to remove debris before entering the below grade level storage tanks. 2.3 A level control in the day tank shall cause the sump pump to replenish the day tank on demand. 2.4 A variable speed multi-stage pump shall provide flow to the toilet flushing system on demand as specified below. The pump discharge shall pass through a filter before being sent to the toilet distribution headers. 2.5 The system shall include a master control system with the capability of interfacing with Building Automation System as well as provide data logging capability of key water collection and use parameters. PART 3 - EQUIPMENT 3.1 LEVEL SENSOR CHICAGO POLICE DEPARTMENT 12 TH DISTRICT POLICE STATION 15415 -1 RAINWATER HARVESTING PBC-PROJECT# 09070
Project Rev B_07/02/10 A. Level sensor shall be located in below grade Atlantis tanks and shall be a 2-wire pressure transmitter 0-5 PSI. Includes stainless steel assembly and 50’ of water resistant cable. Additional cable lengths available if required. Wahaso BC-5. 3.2 SUMP PUMP A. Sump Pump shall be capable of a minimum providing 110 GPM @ 30’ TDH output. Includes 2” discharge port and 1-1/2 HP 3450 RPM TEFC Motor 208 Volt/3 Phase. Includes automatic low level shutoff with level float switch assembly. Myers ME-150. 3.3 RAINWATER BOOSTER PUMP SKID (BP-1). A. See schedule on drawing P5.1 for information and specification section 15450. Refer to drawing P4.2, detail 2 for additional details. 3.4 FINAL FILTRATION A. Amiad Filter (115 VAC) Self Cleaning Filter shall include 50 micron filter and solenoid mounted on Wahaso Support Frame. Includes differential pressure switch with controls for automatic operation. Wahaso Model TAF-750 3.5 CHLORINATION SYSTEM A. Water in the day tank shall be chlorinated for sanitation purposes using a dry calcium hypochlorite pellet (NSF Approved) as chlorine supply. A chlorine analyzer will monitor the level in chlorine residual (free) PPM Units. The control system allows user-selectable chlorine dose rate. Chlorination System to include Arch Chemical MM-1S Dry Chlorinator Mounted on a skid and pre-plumbed and wired. Water supply will be from NPW system. System includes 12 GPD Chlorine Dosing Pump, Injector, and chlorine sensor 4-20 mA 2 wire transmitter for direct readout in PPM of residual chlorine. Wahaso Model CL-100 or Pentair Water Pool Products Model HC-3315. 3.6 SMOOTHING INLET A. JR Smith model number RH9530SI-08, Stainless steel smoothing inlet to reduce turbulence into cistern. 3.7 DAY TANK A. Day Tank shall be manufactured of High Density Polyethylene. Refer to Drawing P4.1, detail 8 for additional details. Fittings for Day Tank shall be thermo-welded to tank. Norwesco model number 40023, 67” diameter x 47” tall with 16” manway. Tank to include all appropriate fittings for city water makeup air gap, discharge to booster pump, level sensor and Chlorine recirculation system. Include a sign reading “Non-Potable Water”. 3.8 FLOATING SUCTION FILTER A. JR Smith model number RH9532C-2, 2” floating filter with coarse mesh. CHICAGO POLICE DEPARTMENT 12 TH DISTRICT POLICE STATION 15415 -2 RAINWATER HARVESTING PBC-PROJECT# 09070
Page 1 and 2: Project Rev B_07/02/10 SECTION 0281
Page 3 and 4: PBC Control Date: 1_03/22/10 Projec
Page 11 and 12: PBC Control Rev: 1_09/07/09 PD Proj
Page 19 and 20: PEL Standard Specification_Rev 6/8/
Page 29: PEL Standard Specification_Rev 6/8/
Page 43 and 44: Project Rev E_07/02/10 SECTION 1574
Page 45 and 46: Project Rev E_07/02/10 well as demo
Page 47 and 48: Project Rev E_07/02/10 8. Based on
Page 49 and 50: Project Rev E_07/02/10 bar will hav
Page 51 and 52: Project Rev E_07/02/10 D. Pressure
Page 71 and 72: PBC Control Rev: 1_09/07/09 Project
Page 81 and 82:
PBC CONTROL REV: 1_09/07/09 PROJECT
Page 83 and 84:
Page 85 and 86:
Page 87 and 88:
Page 89 and 90:
Page 91 and 92:
Page 93 and 94:
Page 95 and 96:
Page 97 and 98:
Page 99 and 100:
Page 101 and 102:
Page 103 and 104:
Page 105 and 106:
Page 107 and 108:
Page 109 and 110:
Page 111 and 112:
Page 113 and 114:
Page 115 and 116:
Page 117 and 118:
Page 119 and 120:
show all

Revised Specifications - the Public Building Commission of Chicago

Create successful ePaper yourself

Delete template?

Save as template?