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BS ISO 15686-5:2017

$198.66

Buildings and constructed assets. Service life planning – Life-cycle costing

Published By Publication Date Number of Pages
BSI 2017 54
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This document provides requirements and guidelines for performing life-cycle cost (LCC) analyses of buildings and constructed assets and their parts, whether new or existing.

NOTE 1 Life-cycle costing takes into account cost or cash flows, i.e. relevant costs (and income and externalities if included in the agreed scope) arising from acquisition through operation to disposal.

NOTE 2 Life-cycle costing typically includes a comparison between alternatives or an estimate of future costs at portfolio, project or component level. Life-cycle costing is performed over an agreed period of analysis, clearly identifying whether the analysis is for only part of or for the entire life cycle of the constructed asset.

PDF Catalog

PDF Pages PDF Title
2 National foreword
7 Foreword
8 Introduction
11 1 Scope
2 Normative references
3 Terms and definitions
3.1 Costs
13 3.2 Analysis/measures
14 3.3 Elements of calculation
15 3.4 Other terms
16 4 Principles of life-cycle costing
4.1 Purpose and scope of life-cycle costing
4.2 Costs to include in LCC analysis
4.2.1 Defining scope of costs included in the analysis
17 4.2.2 Classification of costs
19 4.3 Typical analysis at different stages of the life cycle
20 4.4 Analysis based on client requirements and the intended use of the results
4.4.1 Scope based on client requirements
21 4.4.2 Decisions informed by LCC analysis
23 4.4.3 Strategic level project planning — Evaluation of strategic alternatives
4.4.4 System and detailed decision level — Integrating life-cycle costing into design appraisals
24 4.4.5 Service life planning — LCC plans
25 4.4.6 Major repairs, replacements and adaptations
4.4.7 End of life
4.5 Data for analysis at different stages of the project life cycle
4.5.1 General
26 4.5.2 Benchmark LCC analysis
4.5.3 Detailed LCC analysis
4.6 Cost variables
27 4.7 Calculating cost variables and the form of future costs analysis
4.8 Discounting costs to present values
4.9 Approval and validation
4.10 Reporting LCC analysis
28 5 Setting the scope for LCC analysis
5.1 Relevance and importance of setting parameters for the use of life-cycle costing
5.2 Service life, life cycle and design life
29 5.3 Period of analysis
5.4 Cost variables
5.4.1 Acquisition costs
30 5.4.2 Operation, maintenance and replacement costs
32 5.4.3 Costs at disposal
5.4.4 End-of-life residual valuations
5.4.5 Discount rate
33 5.4.6 Inflation
5.4.7 Taxes and subsidies
5.4.8 Changes in costs over time
5.4.9 Energy and utilities costs
6 WLC variables used in some investment appraisals
6.1 General
34 6.2 Externalities
6.3 Costs related to environmental impacts
6.4 Social costs and benefits
35 6.5 Contribution of the construction works to sustainability and sustainable development
6.6 Intangibles — Impact on business reputation, functional efficiency, etc.
36 6.7 Future income streams
6.8 Financing costs
7 Decision variables — Basis of calculating costs
7.1 Real costs
7.2 Nominal costs
7.3 Discounted costs
37 7.4 Present value
7.4.1 General
7.4.2 Net present value (NPV) or net present cost (NPC)
38 8 Uncertainty and risks
8.1 General
8.2 Identification of the causes of uncertainty and risks
39 8.3 Monte Carlo analysis and confidence modelling
8.4 Sensitivity analysis and modelling the effects of changing key assumptions
40 9 Reporting
9.1 LCC analysis — Presenting the results and supporting information
41 9.2 Reporting costs
9.3 Approvals and audit trail
42 Annex A (informative) Worked examples — Analysis techniques used in life-cycle costing
45 Annex B (informative) Measures of comparison in whole life costing/life-cycle costing
47 Annex C (informative) Demonstrating sensitivity analysis
49 Annex D (informative) Graphical representation of WLC/LCC analysis
51 Annex E (informative) Example of levels of LCC analysis
52 Bibliography
BS ISO 15686-5:2017
$198.66