Title: HVAC Ground Unit Replacement Project

Deadline: 6/12/2019 12:00 PM   (UTC-08:00) Pacific Time (US & Canada)

Status: Awarded

Quote Number: 2019-1211

Description: Provide & install fifteen (15) HVAC ground units on-site. Please note mandatory pre-bid walk. 

Products:
  • Heating, Air Conditioning, And Ventilation Maintenance, Repair And Installation Services
  • Heating, Ventilating And Air Conditioning (Hvac)
Documents:
Addition 1

Name: Questions submitted with answers

Overview:




concerns/questions regarding Mira Monte, HVAC unit replacement 2019-1211. Please advise on the following:












1. The existing return air grill measures 14 x 8. A modern bar type R/A grill, the same size, at .75 




static pressure is only capable of 400 CFM. The unit is 2.5 ton and in cooling produces 1000 CFM.  












2. The sheet metal covering will need to be removed to replace coil and will cause significant paint 




damage. Should any cosmetic repair be included in bid or will OUSD take care of that?












3. Existing electrical disconnects are plastic and falling apart. Most of the doors are missing safety 




latches and some are missing hinges. Also, the seal tight electrical whip from disconnect to 




condensing units are brittle and should also be replaced. 












4. Condensing unit pads are undersized and out of level. I know we talked about extending if       




required, but it’s going to be difficult to extend from an unleveled pad. Would you like a price for 




replacing pads? 












5. In the original scope of work it said that OUSD would be providing thermostats but on site it 




was discussed that the contractor will provide these. Please clarify. 



Answers:

1.  The slatted screens at the returns should be replaced with a similar sized screen which allows for increased air volume.  Changing from a louvered slat to a screen should allow for the extra volume needed.

2.  If the paint damage is on the air handler unit, it should be touched up by the contractor to match existing colors.  If the damage is on a district painted wall, we will touch it up.

3.  Replacement of boxes, electrical conduits and whips as needed should be part of the scope of work.  Perhaps an allowance basis so we only replace what is needed.  I.e. our total bid is X including an allowance for electrical work of Y.

4.  We recommend over-pouring the existing pad to a slightly deeper pad with level forms to accomplish the goals of both undersized / out of level.  This are not weight bearing pads, and simple concrete design is fine.

5.  We will supply the EcoBee thermostats per spec.




Posted: 5/31/2019

Addition 2

Name: Questions submitted with answers

Overview:

Question: If we increase the concrete equipment pads outside the classroom door for the condenser units.  The door to the class room may then be obstructed. Also this could add an increased risk of a potential trip hazard.

In Lieu of re-pouring concrete pads for leveling, can we suggest the use neoprene pads under the units to level the units as required?  This approach has been useful for solving this problem.  






Answer: Please see answer #4 on the website. We do not wish to go with neoprene pads and would like to stick to concrete. Since a lot of the units currently have different size pads, please submit unit costs for concrete and we can tackle this separately for each unit. 









Posted: 6/6/2019

Addition 3

Name: Deadline Extended to coincide with Board meeting requirements

Overview: Deadline was moved from 6-7-19 to 6-12-19 to allow more time for bidding based on the dates needed to meet board deadlines.

Posted: 6/7/2019

Addition 4

Name: Award Information

Overview: Awarded to Site Logiq

Posted: 6/12/2019

Amount: $67,687.00

Documents:
Addition 1

Name: Questions submitted with answers

Overview:




concerns/questions regarding Mira Monte, HVAC unit replacement 2019-1211. Please advise on the following:












1. The existing return air grill measures 14 x 8. A modern bar type R/A grill, the same size, at .75 




static pressure is only capable of 400 CFM. The unit is 2.5 ton and in cooling produces 1000 CFM.  












2. The sheet metal covering will need to be removed to replace coil and will cause significant paint 




damage. Should any cosmetic repair be included in bid or will OUSD take care of that?












3. Existing electrical disconnects are plastic and falling apart. Most of the doors are missing safety 




latches and some are missing hinges. Also, the seal tight electrical whip from disconnect to 




condensing units are brittle and should also be replaced. 












4. Condensing unit pads are undersized and out of level. I know we talked about extending if       




required, but it’s going to be difficult to extend from an unleveled pad. Would you like a price for 




replacing pads? 












5. In the original scope of work it said that OUSD would be providing thermostats but on site it 




was discussed that the contractor will provide these. Please clarify. 



Answers:

1.  The slatted screens at the returns should be replaced with a similar sized screen which allows for increased air volume.  Changing from a louvered slat to a screen should allow for the extra volume needed.

2.  If the paint damage is on the air handler unit, it should be touched up by the contractor to match existing colors.  If the damage is on a district painted wall, we will touch it up.

3.  Replacement of boxes, electrical conduits and whips as needed should be part of the scope of work.  Perhaps an allowance basis so we only replace what is needed.  I.e. our total bid is X including an allowance for electrical work of Y.

4.  We recommend over-pouring the existing pad to a slightly deeper pad with level forms to accomplish the goals of both undersized / out of level.  This are not weight bearing pads, and simple concrete design is fine.

5.  We will supply the EcoBee thermostats per spec.




Posted: 5/31/2019

Addition 2

Name: Questions submitted with answers

Overview:

Question: If we increase the concrete equipment pads outside the classroom door for the condenser units.  The door to the class room may then be obstructed. Also this could add an increased risk of a potential trip hazard.

In Lieu of re-pouring concrete pads for leveling, can we suggest the use neoprene pads under the units to level the units as required?  This approach has been useful for solving this problem.  






Answer: Please see answer #4 on the website. We do not wish to go with neoprene pads and would like to stick to concrete. Since a lot of the units currently have different size pads, please submit unit costs for concrete and we can tackle this separately for each unit. 









Posted: 6/6/2019

Addition 3

Name: Deadline Extended to coincide with Board meeting requirements

Overview: Deadline was moved from 6-7-19 to 6-12-19 to allow more time for bidding based on the dates needed to meet board deadlines.

Posted: 6/7/2019

Addition 4

Name: Award Information

Overview: Awarded to Site Logiq

Posted: 6/12/2019

Amount: $67,687.00

Documents: