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For Leed EA C1.3 calcs to comply with Core Perf Guide: We need to provide load calcs, zone by zone load calcs at design conditions, Fan sizing calcs, critical path supply duct pressure load calcs and part load condition calcs. 10 story building 6th floor occupied by one tenant Chilled water...

This is top floor of 12 story apartment building. The 6 dryers add up to 3000 CFM. They are in laundry room. The adjacent room is user waiting area. next to waiting area is corridor/elevator lobby, with very minimal supply air from building system to the corridor (heating/cooling by FCU's). The...

Laundry room with 6 dryers that exhaust to outside. RTU supplies into room. OA is modulated up as dryers come on. Room pressure sensor is used to control the OA damper. Pressure sensor to maintain 0.05" setpoint (adjustable) in room. Is this the best way to control? Current sensors on the...

Thanks for the information. Attached is the full file. Is there any more information about manholes that can be obtained by this map? http://files.engineering.com/getfile.aspx?folder=39b639d3-3c05-45b7-ac11-5e2960c8473f&file=CD-21-22-NW-S.tif

How to read counter map? See attached image Are A and B invert elevations or rim elevations? Can both be determined by this number? How can we find the elevation of the house? C Is E and F the elevation of street or house? Generally there are 4-5 steps up to first floor of house in front yard...

Attached speedqueen data shows 6" dryer vent will discharge 500 cfm, for 30lb tumbler dryer. (trashcanman) I have seen the partition wall flush with the front of dryer at one installation. Can this wall be in the middle of the dryers with only half of the dryer inside the wall box? In case...

6 dryers, 6"dia vents at 500 cfm, run on gas at 75 mbh each, commercial 30lbs capacity Speedqueen high rise bldg laundry 10 ton dedicated rtu serves the room Currently balanced to 3200 cfm. This unit can only do 800cfm oa (per model number) Dryer vents tied to two headers (set of 3 dryers...

Does presence of gas pipe pose any hazard around elec transformer, due to any sparks by short circuit or something? with possibility of a gas leak.

What is the best way to estimate latent load in room with 6 dryers? 10 washers? apt bldg.

If a gas unit heater (30 mbh) is installed in elec room, does this need to be explosion proof? The room has transformer, 1200kva panel.

Office space and training room with 50 people ~2000sf. Office space load is 3 tons, training room load is 10 tons Existing RTU-1 is 7.5 ton unit only and it will serve office (cannot demo it and have to use the remainder capacity). The remaining 4 ton will serve training room. The training room...

LOADING DOCK 1100 SF 12FT HIGH WALLS 36X30 TWO 12X10 ROLLUP STEEL DOORS USING ENVELOPE LOADS/ 60DEGF SPACE TEMP 2ACH= 33MBH UNIT HEATER 4ACH= 56MBH UNIT HEATER 30 BTUH/SF OR 50 BTUH/SF, WHICH IS BETTER THE DOORS WILL OPEN DURING DELIVERY AND WILL NEED TO HEAT UP QUICKLY WHEN GONE. TWO...

Attached is gas piping diagram. IFGC 2015 Total load of 1170 CFH, see attached roof plan and riser. Furthest RTU is 200' from the meter. Lengths of the branches on dwg How do we determine which chart to use 402.4---(1) , (2) or (3). If we can reduce the gas pressure to any of these charts then...

Can a furnace and water heater flue (92% eff) combine and go out side wall of basement? Final height about 36" above grade (washington, dc) For a 92% eff furnace is concentric vent kit required? Can a regular 5" or 6" vent be used, with combustion air coming from inside the house. What is...

2012 ICC existing IBC,in washington dc We will use Cafe or Dining for 70 people / 1000 sf. The space has a basement that is a storage space and cannot be used for occupancy, as the height is very low. The upper portion is 4000 sf but not all will be used for dining. For planning purposes, it...

Building built in 1955. Original use: Office. Converted to Retail space, 1990's Area of modification: 4000 sf Will convert to Banquet hall/assembly, Occupancy type A-2, Not all area will be banquet hall, some corridor,kitchen, toilets. It is less than 5000sf but there will be more than 100...

Basement is 4ft below street level. The water closet and Tub rims are below the street level, in bathroom in basement. Existing waste pipe has no backflow valve. Per code if the flood level of the lowest fixture is below the manhole on street need a backflow valve. IPC2012, washington, dc. The...

A sauna that uses 3000W of heat (infrared) to be installed in a room Two sides of the room have office/consultation room. Front is corridor. back to retail space. The room is 60 Sf. The Sauna is about 30 sf. Will sauna dissipate heat to the room it is in? Will it dissipate heat to adjacent...

Cannot go vertically down as there is a beam below between two columns., can only go out of wc from back wall.

See attached. The waste pipe is 4" from a wall mounted water closet that discharges into wall horizontally (tank valve, discharge about 8" Above floor, centerline). Then it turns down and drain pipes from 2 lavs and shower are connected. The first elbow is right behind the wall. Then the pipe...