1、ENGINEERING STANDARDS SECTION 5 PLUMBING ?InterContinental Hotels Group Asia Pacific 295 2005 Revision All Rights Reserved 5.3. SANITARY DRAINAGE SYSTEM?.296 5.3.1. GENERAL?. 296 5.3.2. DESIGN CRITERIA?. 296 5.3.3. SPECIFICATION & APPLICATION GUIDE?. 296 5.3.3.1. Piping. 296 5.3.3.2. Clean-outs?. 29
2、7 5.3.3.3. Ejector Systems? ?!. 297 5.3.3.4. Venting System#?$?!. 297 5.3.3.5. Plumbing Shaft Drainage%&? 298 5.3.3.6. Indirect Waste System(?&. 298 5.3.3.7. Manholes and Inspection Chambers)?*?+?)?,?-. 298 5.3.4. ENVIRONMENT & ENERGY CONSERVATION.?/1032?4?5. 298 5.3.5. COMMISSIONING & TESTING6?7?8?
3、96. 298 5.3.6. SPARE PARTS:;. 299 ENGINEERING STANDARDS SECTION 5 PLUMBING ?InterContinental Hotels Group Asia Pacific 296 2005 Revision All Rights Reserved 5.3. SANITARY DRAINAGE SYSTEM ? 5.3.1. GENERAL ?=?=?=?ACB?D?E?F1G3HI?J?K?:?L?MN?O?P?Q?!1RTS?VU?W?X%Y?Z?_AR3?ab?cd?e?f%g?h?AR3Z?i?jk?lVmonI?pCq?
4、M(VrCVURTi?Ms%tjkum 5.3.2. DESIGN CRITERIA v?w?x?yv?w?x?yv?w?x?yv?w?x?y All horizontal piping should have a uniform slope of at least 1 and maintain a minimum velocity of 0.6 meters per second flow. Offsets where unavoidable in the riser greater than 45 degrees require a relief vent as a vertical co
5、ntinuation of the lowest section of the riser, connecting into the vent riser one floor above the offset, or may be continued separately through the roof. ?z?|T?R%?1R34?d?A?moY?R3?|?#?$?Y?AR%?|#?$?Y?W?V%?N?O?m The system is single stack drainage system utilizing special fittings and design criteria.
6、 All installations must be designed and installed in strict accordance with Local Authority bylaws. !?Y?!?VR?T;?m?u?:?13?tm Review local code requirements for oil/gasoline interceptors for indoor parking facilities. -u?%? ?Vm Review local code requirements for grease interceptors for Kitchen facilit
7、ies. Individual grease traps should be provided at each appliance likely to generate grease-laden waste products. Where individual grease traps are impractical, a central grease trap, easily accessible for emptying into trucks, shall be installed. (Typically externally located at loading dock.) H?IA
8、?mT?10A?q?3FM?mT?TR%?r%?mT?uR?1?VR%?7?zu?rT%mABS or PVC pipes shall not be used for drainage in guest area due to noise problem. Use ductile iron or cast iron pipe with mechanical victaulic couplings. ?3AR3n?ABSZPVCAmCu?3?Y?o%Z?Am 5.3.3. SPECIFICATION & APPLICATION GUIDE ? 5.3.3.1. Piping ? Minimum
9、sizes of wastes are: i?Fixture ?vvvv Outlet Size ENGINEERING STANDARDS SECTION 5 PLUMBING ?InterContinental Hotels Group Asia Pacific 297 2005 Revision All Rights Reserved Lavatory Basins J? 35mm (1”) 35 (1”) Bathtubs D? 42mm (1”) 42(1”) Bidet D 35mm (1”) 35(1”) Water Closet. 100mm (4”) 100(4”) Urin
10、al Bowl 42mm (1”) 42(1”) All connections from branches to soil risers to be made with a sanitary tee having a sanitary sweep. ?Xi?Y?! C?1RT?#%$?&Num Floor wastes shall be used in all bathrooms and fed from vanity basin to avoid evaporation. ?D-?M?m 5.3.3.2. Clean-outs (*)(*)(*)(*) Provide clean-outs
11、 every 15 meters in horizontal piping and at every change in direction greater than 45 degrees. Clean-outs shall be accessible, through removable ceilings, access panels, or by extension to a finished surface. For example, where drainage piping occurs above high ceiling areas such as Lobbies, Ballro
12、oms and the like, clean-outs shall be extended to flush type floor clean-out deck plates. Dead-ends shall be avoided except where necessary to extend a clean-out. +-,?ARC?.?M?oRT?0/1,324?R5?M6o?Tmo?7089t0:5Vm?*?3?AB?RC=?DG3EDF?L?HG?I?J:5?1RK*L3MMN?OP?1R%?Q?0*RTS?U*VAm 5.3.3.3. Ejector Systems ? Fixt
13、ures or drainage piping, located below the invert of the sewer in the street or place of disposal, require a separate system of piping. Discharge is to be by gravity into an airtight ejector pit, then pumped by mechanical means into the house drain or as a separate connection to the sewer. Pumps mus
14、t be in duplicate, designed to operate alternately, except when one is out of order, and be supplied by emergency power if available. i?jk?W?X?h?!?M0Y1m?P?QZ?h1R3i?9?e?i?AR3i? ?M?S*AUR%h?W?moi?AR%?_7?81RKabVr?|T?0cZAR3M?d*e:?f?QAm All drainage pumps shall be of the non-clog impeller type, capable of
15、 passing a minimum of 65mm diameter sphere. If the submersible type, it should include a quick pump removable feature to permit easy removal of pump with dismantling discharge piping ?A?hgCi*j?L?0%?kl?oN?OVm3=?m?n?Lo?0p?q?r?s1R07*8%?*tAm 5.3.3.4. Venting System u?vu?vu?vu?v? The sanitary drainage sy
16、stem should be provided with a system of vent piping, which will permit the admission or venting of air, so that the fixture trap shall not be subjected to a pressure differential of more than 25mm of water. This can be accomplished in the vertical piping with separate soil and vent risers, or with
17、an automatic air admittance valve. Branch piping for the systems must be in strict accordance with local standards. Install relief vents between the soil and vent riser at least every 10 stories. Sizes of vent risers and branches shall be based on Local Authority guidelines. Branch vent connections
18、to riser shall be made above the rim of the fixtures. Vent risers shall be connected to adjacent soil riser at the base of the riser. ENGINEERING STANDARDS SECTION 5 PLUMBING ?InterContinental Hotels Group Asia Pacific 298 2005 Revision All Rights Reserved B%?!?#?$?!?|w*xyART#?$?*z?%$9uUTLARBE?F1|?G
19、?O?3?m?k?urRC?S?i?#?$?0Y1R3Z?|f%$!0mC!?M?|umo?k?i?*?k?#?$? RT?.M?N?$?Am3?k?#?$?*?*?S?X?*Vm?#?$?Y?W?B?FA9tmA3?0?VR3?&?zAurb?9Vmo*S?nIY?!*)?*-?nIm 5.3.3.6. Indirect Waste System (?_ An indirect waste system should be installed to collect discharges from overflow, thermal relief and pressure relief val
20、ves. Upper level plantroom gullies may also be connected to this system. The system should be routed to discharge over a plantroom gully or sump at the lowest level. (?_?3%(*AU1R?1VUVmCIA(?_*5?uo?b?Wum(?_?M(VrT?(?m 5.3.3.7. Manholes and Inspection Chambers *?*?*?*?% Manholes should be constructed of
21、 concrete, brick or pre-cast concrete block, tapered to a cast iron frame and cover. Where manhole cover is situated internally a double seal airtight cover must be installed. )?*?+-V?G3Z?*RC?um Manhole bottoms should be of poured concrete with either smooth channels or haunched around purpose made
22、cast iron inspection chamber branches. ?)?*?+?*?ARProvide step irons include cement waterproofing internally and externally. R3?P?Q?Lo0?i?(?*Vm Where feasible recycle gray water from hand washbasins, bathtubs, laundry, sauna pool. Collect rain water, treat and re-use for toilets, irrigation, boilers
23、 and cooling tower. ?b?.?JGTDAGJ?KGC?DF?ART*(*?1RC9tjk1R3y?J?-G?GT?um Interceptors should be incorporated into the design to collect grease from kitchen equipment and petrol from car parks and loading bay areas. HIM%G(HIRTG?zA1R 5.3.5. COMMISSIONING & TESTING ENGINEERING STANDARDS SECTION 5 PLUMBING
24、 ?InterContinental Hotels Group Asia Pacific 299 2005 Revision All Rights Reserved *? All systems should be fully tested and operational prior to turnover to IHG. Copies of all records shall be given to hotel Chief Engineer. Demonstration of system performance and instruction to IHG personnel should
25、 be included. ?S?!?_IHGART?!?9t?6?7?8?96m?AC?_?c?mC?!?0?IHG?m Unless otherwise dictated by Code or authorities having jurisdiction, test piping systems as follows: K*LC?Z3?1R%?!967? Tests the drains, waste and vent piping inside the building. Test should include the entire system from the lowest poi
26、nt of the system to the highest pipe above the roof. The air tests shall be applied to the plumbing drainage system in its entirety or in sections. Sections, which are found satisfactory, need not be re-tested after completion of the entire system unless considered necessary by the proper administra
27、tive authority. 9?6*11Gi1?#$A!m%9?6AA?1a?X?1?A!m%$?9?6?0?Z0?!?mC0?1!?*c?VR3b0?1R3?M?P?1RKa?! ?um The piping of plumbing drainage and venting systems should be air tested upon completion of the first fix installation. Air should be forced into the system until there is a uniform pressure of 38mm wate
28、r gauge (2.4mbar) on the portion of the system being tested. The pressure must remain constant for 15minutes without the addition of air. ?#?$?!?0?#?|*/%$T?9t$?&um()?$9?e?!AR3k?X!?q?AU3?*38?+Q(2.4,)Sumo?-?.?%$0/;?h1RT?Q?0%4?151?4um After the plumbing fixtures have been set and their traps filled wit
29、h water, their connections should be tested and proven gastight and watertight by plugging the stack openings on the roof and the building drain where it leaves the building, and air introduced into the system equal to the pressure of 25mm water gauge. Such pressure should remain constant for the pe
30、riod of inspection without the introduction of additional air. B?F?1RT?2x?y:;?M?;=?A?xyVm:;?B!&?jC?:jCDRT2?E%AmhFU?1RHGJI?!;=c?C?R?!Sf? 5% complete valves each size and type; 10% complete repacking, reseating kits each type ?5%R3R?cF10% complete valves each size; 20% complete repacking, reseating ki
31、ts each type ?10%R3R?cENGINEERING STANDARDS SECTION 5 PLUMBING ?InterContinental Hotels Group Asia Pacific 300 2005 Revision All Rights Reserved Equipment vvvv Local Manufacture LMNJOLMNJOLMNJOLMNJO Imported PPPP 10% F20% All Plumbing Motors ?THU?V Manufacturers export kit3R?cF Manufacturers export
32、kit 3?l?VU1R?cF All Plumbing Starters, Contractors and Relays ?%?WGX1G0YZ 1 set of contacts each type 1 magnetic coil each type ?jC|RXA ?jC|? 2 sets contactors each type; 2 magnetic coil each type; ?jC2RXA ?jC2? Grease Interceptor 3 3 months 3 Manufacturers export kit; Chemicals for 3 month operation R?cF 3T7?8?_?Aa Access Doors )?*! 10% gaskets nuts and bolts 10%bR0cd Manufactures export kit. R?cF
