DISAPPROVED DESCRIPTION Put an incentive clause in contracts for completing ahead of schedule. Not recommended Review wrap-up insurance to reward a contractor with a good safety record and penalize one with UNPRICED a poor record. Recommended in principle Encourage action to eliminate sales taxes and permit fees. Eliminate station entrances where more than one entrance is planned. DISAPPROVED Add columns under platforms and tracks in mezzanines of above-grade stations. study complete Feb 5 (along with station box study) Delete re-heat electric heaters in station air conditioning. Recommend approval Liberalize provisions for payment for materials and equipment. Not recommended REMARKS COST RANGE studying in connection with similiar investigation of incentives for reducing damage claims Alternative is to postpone construction of additional entrance until patronage clearly justifies it. Opportunity for this reduction now restricted to Shaw Station. Cleveland Park, Van Ness and Tenley Circle Stations are under constettem another Reduction of beam span length possible with study on station by station basis. circulation is a consideration. M Patron APPROVED DESCRIPTION Reduce requirements for UPS system. 2 APPROVED "APPROVED"! iminate loop track at Greenbelt Yard. Eliminate loop track at Glenmont Yard. Eliminate Naylor Road pocket track. Use single story at-grade substations in lieu of two-story. Relax requirement of pre-bored holes for piles in selected areas. "APPROVED APPROVED APPROVED APPROVED APPROVED and "APPROVED Review sizes of ancillary rooms at station Discontinue use of boro-silicate for duct Use standard gauge metal for ductwork. REMARKS Present UPS system requires 3 hours UPS COST RANGE Reduce 4 inch topping on platform slabs at APPROVED Relax the design requirement of standard box girders. Substitute A-36 for A-242 steel for safety walk gratings. Utilize galvanized steel pipe condults Initially Reduce spare electrical capacity. "APPROVED "APPROVED1edu APPROVED DU Eliminate standby chilled water and condenser pumps. Use standard adjustable pipe supports. REMARKS Required only in wet locations. COST RANGE $250,000 Permitted via climination of heating cables. $250,000 Revise design criteria to permit other types $250,000 Relax criteria to allow less expensive $250,000 Could eliminate the requirement for a $250,000 Since power requirements are now Identified, DD-M-17 requires pre-packaged drainage pumping system. Interim pumps may be adequate and could be left in place. COST RANGE Ancillary space would not be required for these units. $150,000 Since cooling towers are not used in winter, these tanks can be eliminated. $150,000 It is more economical than the present float system which requires running water lines from chiller room to cooling tower. Exact loading will not be known until operation is actually started. APPROVED 19. DESCRIPTION Eliminate pre-packaged drainage pumping (Continued) systems. Objective met by using permanent pumps at all times APPROVED APPROVED APPROVED 21 22. APPROVED 23. APPROVED 24. APPROVED Substitute roof-top air conditioning units for interior units at surface stations. Delete sump storage tanks In cooling towers. tower. Use electric water level control for cooling Revise air balance specification requirements and eliminate those not practicable until operational load exists. Reduce the number of concrete construction 12 $150,000 COST RANGE Present specifications require use of $50,000 Electric controls could be used in lieu of $50,000 DESCRIPTION Substitute concrete for 12" X 12" granite sets Delete painting of galvanized ductwork in mechanical equipment rooms. APPROVED 30. 31. 32. Standardize pile bonding. Use tube axial fans in lieu of yane axial fans. Tube axial fans found to take more power Reduce door heights to 7'-0" where possible. Use service weight cast iron soll pipe, except APPROVED Substitute electric controls for pneumatic |