Kev tsim kho: Lub pob yuav tsum tau ua los ntawm cov khoom siv ruaj khov nrog lub ntsej muag du, untextured nto. Lub pob xim yuav tsum zoo ib yam, tshwj tsis yog rau cov cim cim. Cov bulges me ntsis ntawm cov seams tau tso cai, tsuav yog lawv tsis cuam tshuam rau lub pob lub davhlau yam ntxwv.
Loj: Lub pob lub taub yuav tsum nyob nruab nrab ntawm 2.87 thiab 2.97 nti (7.29 txog 7.54 cm). Qhov siab tshaj plaws roundness sib txawv yuav tsum tsis pub tshaj ± 0.020 nti (0.51 hli).
Qhov hnyav: Lub pob qhov hnyav yuav tsum nyob nruab nrab ntawm 0.78 thiab 0.935 ooj (22.1 txog 26.5 grams).
bounciness: Thaum pub dawb- poob los ntawm qhov siab ntawm 78 ntiv tes (198.1 cm) mus rau granite nto ntawm yam tsawg kawg 12 ntiv tes (30.5 cm) x 12 ntiv tes (30.5 cm) x 4 ntiv tes (10.2 cm), lub pob yuav tsum dhia ntawm 30 thiab 34 ntiv tes (76.2} cm). Qhov ntsuas kub ib puag ncig yog 70 ± 5 degrees Fahrenheit (21 ± 2.8 degrees Celsius).
Compressibility: kuaj raws li ASTM F1888-09, qhov nruab nrab compression xeem yuav tsum tsawg dua 43 LBF. Txhua lub pob yuav raug sim ob zaug: Ib zaug nrog ib qho load thov perpendicular mus rau lub pob seams (yog tias tsim nyog), thiab ib zaug nrog ib tug load thov mus rau lub pob seams (yog tias tsim nyog). Yog tias tsis muaj seams, lub pob yuav raug sim ib zaug ntawm qhov chaw random, thiab qhov chaw sim thib ob yuav yog kwv yees li 90 degrees los ntawm thawj qhov chaw.
Tsim: Lub pob yuav tsum muaj 26 qhov (sab hauv tsev) txog 40 qhov (sab nraum zoov); Txawm li cas los xij, tag nrho cov pob pom zoo tuaj yeem siv rau kev ua si sab hauv lossis sab nraum zoov. Qhov sib nrug ntawm lub qhov thiab tag nrho cov pob tsim yuav tsum ua tau raws li cov yam ntxwv ntawm lub davhlau.
