APPENDIX C-Continued 



APPENDICES 



APPENDIX 1— METRIC SYSTEM ADAPTATION 



Al.l — Procedures outlined in this recommended prac- 

 tice have been presented using British (United States 

 customary) units of measurement. The principles are 

 equally applicable in the metric system with proper 

 adaptation of units. This Appendix provides all of the 

 information necessary to apply the proportioning proce- 

 dure using International SI (metric) measurements. 

 Table Al.l gives relevant conversion factors. A numeri- 

 cal example is presented in Appendix 2. 



AIJ! — For convenience of reference, numbering of 

 subsequent paragraphs in this Appendix corresponds 

 to the body of the report except that the designa- 

 tion "Al" is prefixed. All tables have been converted 

 and reproduced. Descriptive portions are included only 

 where use of the metric system requires a change 

 in a procedure or formula. To the extent practicable, 

 conversions to metric units have been made in such a 



TABLE Al.l— CONVERSION FACTORS. 

 BRITISH TO METRIC UNITS* 



QuanUtr 



Bnmh 



<U.S. customary) 



unit 



Sit 



(Metric) 



unit 



Conversion 

 factor 

 (Batlo: 



Brltlah/SI) 



Lcnfth 



Inch <ln.) 



centimeter (cm) 



1340 





Inch (In.) 



millimeter (mm) 



13.40 



Volume 



cubic {oot (ft*) 



cubic meter (m*) 



0.02833 





cubic yard (yd") 



cubic meter (m') 



0.7040 



Hui 



pound (lb) 



kllofram (kl) 



0.43M 



Siren 



poundi per 

 •quarc Inch 

 (pal) 



Ulocrami force 

 per iquare 

 centimeter 

 (kff/cm<) 



0.0703 



Dcnilt? 



poundi per 

 cubic loot 

 (lb/ft') 



Ulocrama per 

 cubic meter 

 (k»/m') 



19.01 





poundi per , 

 cubic yard 

 (Ib/y*) 



klloframa per 

 cubic meter 

 (k«/m«) 



SMIS 



Tcmpcnturt 



rahnidiell (T) 



degraea 



CenUlrada (C) 



t 



*Olvea namca (and abbravlaUona) ot measurement units In 



the British (17.S. customary) syatara aa used In the body i 



■ ' ■ *" ■ "■ -ratam, alonf with muWpuetv 



. ._ jattv. Trom "ASTM Itetrtc 



Ptaetlea cmda" (kid Edmoa, ItM). - 

 tSyatteM IfitamatlflBa] dUnttit 



tc=(r-a»/ij. 



way that values are realistic in terms of usual prac- 

 tice and significance of numbers. For example, ag- 

 gregate and sieve sizes in the metric tables are ones 

 commonly used in Europe. Thus, there is not always a 

 precise mathematical correspondence between British 

 and metric values in corresponding tables. 



A1.5.Z Steps in calculizttne proportions. Except 

 as discussed below, the meth(xis for arriving at quan- 

 tities of ingredients for a unit volume of concrete are 

 essentially the same when metric units are employed as 

 when British units are employed. The main difference 

 is that the unit volume of concrete becomes the cubic 

 meter and numerical values must be taken from the 

 proper "Al" table instead of the one referred to in the 

 text. 



Al.5.2.1 Step 1. Choice of slump. See Table 

 Al.5.2.1. 



Al.S.Zj: Step 2. Choice of maximum size of ag- 

 gregate. 



Al.S.2.3 Step 3. Estimation of mixing water and 

 air content. See Table Al.5.2.3. 



A1.5.Z.4 Step 4. Selection of water-cement 

 ratio. See Table Al.5.2.4. 



Al.5.2.5 Step 5. Calculotion of cement content. 



Al.5.2.6 Step fi. Estimation of coarse aggregate 

 content. The dry weight of coarse aggregate required 

 for a cubic meter of concrete is equal to the value 

 from Table Al.5.2.6 multiplied by the dry-rodded unit 

 weight of the aggregate in kilograms per cubic meter. 



TABLE Al.5.2.1— RECOMMENDED SLUMPS RDR 

 VARIOUS TYPES OF CONSTRUCTION (METRIC) 





Slump, cm 



Typ« of conitmctlon 



Maximum* 



Minimum 









footlngi 













subitnicture walls 







BeaiTU and reinforced walls 



10 



a 



Building columns 



10 



2 



Pavement! and slabs 



a 



3 



Heavy mass concrete 



8 



1 



*Ma7 b« lner«aMd S cm tor methods ot consolidation other 



tban vibration. 



ACI STANDARD 



331 



