HVH 700 Mechanical - Ductwork SSM & Model BOQ PDF
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Uploaded by QuickerHydrangea
University of Pretoria
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Summary
This document provides detailed specifications for mechanical ductwork, including types of ductwork, insulation, and installation methods. It is likely part of a larger technical document for a construction project. Keywords include mechanical engineering and building services.
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HVH 700 Mechanical – Ductwork SSM & Model BOQ SSM - Mechanical Mechanical installations can be: Heating Ventilation Air conditioning Fire Protection Boiler Gas Refrigeration Compressed air Etc. SSM - Mechanical Equipment SSM - Mechanical Pipework Pipework required...
HVH 700 Mechanical – Ductwork SSM & Model BOQ SSM - Mechanical Mechanical installations can be: Heating Ventilation Air conditioning Fire Protection Boiler Gas Refrigeration Compressed air Etc. SSM - Mechanical Equipment SSM - Mechanical Pipework Pipework required to supply the specific mechanical installation. fire water piping, supply and return refrigerant pipes to HVAC systems Etc. Pipes – (m) Pipes can be insulated if refrigerant needs to be kept cool Prescribed cut lengths of pipes are more expensive. Therefore measured separately. Pipes chased into wall will be more expensive than just fixing it to the wall. Must be measured separately. Pipe fittings – (No) Measure as extra over Pipe fittings exceeding 60mm internal diameter – measured separately The larger the is the more expensive it becomes. SSM - Mechanical ngl Pipework Not exceeding 1000mm deep Pipe trenches Method A According to principles laid down in “Earthworks”. 300mm 200mm 300mm Total width: 800mm Bedding under and filling around pipes – (m3) SSM - Mechanical Pipework Pipe trenches Method B Insulating and protective wrappings, coatings and linings – (m) Insulation around fittings – (No) SSM - Mechanical DUCTWORK, ETC. Ducting Rectangular low pressure Round low pressure Rectangular ducting other than low pressure Ducting Fittings Flexible ducting Ducting Insulation and protection Diffusers, grilles, etc. SSM - Mechanical DUCTWORK, ETC. Rectangular low pressure galvanised sheet metal ducting – (m2) Rectangular Ducting Reducer Reducer SSM - Mechanical DUCTWORK, ETC. Rectangular low pressure galvanised sheet metal ducting – (m2) Category 1 400 600 400+600=1000 Category 2 500 700 Category 5 500+700=1200 Category 4 Category 3 1000 800 700 2500 1500 900 SSM - Mechanical DUCTWORK, ETC. Rectangular low pressure galvanised sheet metal ducting – (m2) Category 1 400 600 400+600=1000 (400 x 2) + (600 x 2) = 2000mm 2m x 4m = 8m2 Smaller ducting Reducer Larger ducting 4m SSM - Mechanical DUCTWORK, ETC. Rectangular low pressure galvanised sheet metal ducting – (m2) SSM - Mechanical DUCTWORK, ETC. Rectangular low pressure galvanised sheet metal ducting – (m2) 200 100 400 200 1200mm 400 900mm 800 500 1000 300 2500 SSM - Mechanical DUCTWORK, ETC. Rectangular low pressure galvanised sheet metal ducting – (m2) SSM - Mechanical DUCTWORK, ETC. Rectangular low pressure galvanised sheet metal ducting – (m2) SSM - Mechanical DUCTWORK, ETC. Rectangular low pressure galvanised sheet metal ducting – (m2) SSM - Mechanical DUCTWORK, ETC. Round low pressure galvanised sheet metal ducting – (m) Rectangular ducting other than low pressure galvanised sheet metal ducting – (m) Rules still apply: In line reduction No distinction between horizontal, vertical, raking. Suspended n.e 1m etc. including general description of support structure Ducting to curve separately Supports included in description or separately SSM - Mechanical DUCTWORK, ETC. Ducting Fittings – (No) SSM - Mechanical DUCTWORK, ETC. Ducting Fittings – (No) SSM - Mechanical DUCTWORK, ETC. Flexible ducting – (No) SSM - Mechanical DUCTING, INSULATION AND PROTECTION Insulation, protective wrappings, coatings, linings, etc. - (m2) SSM - Mechanical DUCTING, INSULATION AND PROTECTION Insulation, protective wrappings, coatings, linings, etc. - (m2) SSM - Mechanical DIFFUSERS, GRILLES, ETC. Diffusers, grilles, attenuators, dampers, filters, etc. – (No) Return air grille Diffuser Ventilation grille SSM - Mechanical LIFT, HOIST, ESCALATIOR AND CONVEYOR Lift Installations Cars (No) Landing entrance (No) Power Units (No) Support work in lift shafts (Item) Ropes (Item) Counterweights (Item) Governors and safety gears (Item) Operation and control system (Item) Temporary use of lifts (Item) SSM - Mechanical LIFT, HOIST, ESCALATIOR AND CONVEYOR Lift Installations SSM - Mechanical LIFT, HOIST, ESCALATIOR AND CONVEYOR Hoist, escalator and conveyor installations Building management systems Material handling installation or disposal installation Follow same measuring principles as for lift installations SSM - Mechanical GENERAL Testing and commissioning Drawings, manuals, etc. Identification markers, etc. Replacement parts Electrical work and work by other trades Thank you