Diagram Screen
Step 9: Generate the Program Output
Step 9: Generate the Program Output
Select Print from the File menu to display the Print screen. Select the appropriate options and click the OK button. Note that certain results are only available after certain design options have been selected on the Print screen.
NOTE: Following is the output obtained from this tutorial.
This completes this PRESTO tutorial session. To exit the program, select Exit from the File menu.
At this point, it would be a good idea to save your project. Select the Save As option from the File menu. Enter the file name you want to save your data to (e.g., MyTutor1) in the File name field and click the Save button. The default extension is “*.prt”.
Evaluation Copy
OUTPUT
Company Name PHONE: 813 555 5555 | SHEET 1 OF 14 Address Here City, ST 12345 | JOB NO. 001 PROGRAM: Presto v. 8.6.0 LEAP Software Inc., Tampa, Fl | BY Lea DATE Oct, 2004 PHONE : TOLL-FREE 1-800-451-5327 TAMPA AREA: 813-985-9170 | CKD. DATE
Description : Double Tee example with openings and different thickness topping in r : egions
---Evaluation Copy
Output
Company Name PHONE: 813 555 5555 | SHEET 2 OF 14 Address Here City, ST 12345 | JOB NO. 001 PROGRAM: Presto v. 8.6.0 LEAP Software Inc., Tampa, Fl | BY Lea DATE Oct, 2004 PHONE : TOLL-FREE 1-800-451-5327 TAMPA AREA: 813-985-9170 | CKD. DATE
Strands: 8.00 Draped Strands: 6.00 Profile: SYMMETRICAL - ONE POINT Pull : 0.75 * fpu * Area = 30.98 kip per strand STRAND GROUPS, SHIELDING AND PULL DATA
Group No of Strand Height, in Pull Debonding,ft
Evaluation Copy
Company Name PHONE: 813 555 5555 | SHEET 3 OF 14 Address Here City, ST 12345 | JOB NO. 001 PROGRAM: Presto v. 8.6.0 LEAP Software Inc., Tampa, Fl | BY Lea DATE Oct, 2004 PHONE : TOLL-FREE 1-800-451-5327 TAMPA AREA: 813-985-9170 | CKD. DATE
---PROJECT: Tutor 1 for Presto
Es,ksi : 29000.0 Fy,ksi : 60.0 Fs,ksi : 30.0 Fy,ksi : 60.0 Rebar Development Length Multiplier : 1.00
PHONE : TOLL-FREE 1-800-451-5327 TAMPA AREA: 813-985-9170 | CKD. DATE
---Evaluation Copy
Output
STRUCTURAL ANALYSIS ( Units: ft , k , kft )
Loc SWrel SWfin DL Topg SD SL LL Ms Vs Mu Vu Tu 1.5 15.1 9.9 0.0 3.9 1.9 0.0 9.4 25.1 24.7 38.0 37.4 0.0 12.5 97.1 91.9 0.0 34.1 17.4 0.0 87.2 230.6 12.6 349.0 19.2 0.0 20.0 124.3 119.1 0.0 44.4 22.6 0.0 113.0 299.0 5.9 452.6 8.8 0.1 25.0 129.7 124.5 0.0 49.1 23.7 0.0 118.3 315.5 0.6 477.2 0.8 0.0 30.0 124.6 119.4 0.0 48.8 22.7 0.0 113.6 304.6 4.9 460.6 7.5 0.0 37.5 97.5 92.3 0.0 39.0 17.6 0.0 87.9 236.8 13.2 357.9 19.9 0.0 48.5 15.1 9.9 0.0 4.3 1.9 0.0 9.5 25.6 25.2 38.7 38.1 0.0 Reactions:
Sup-L 10.4 10.4 0.0 4.1 2.0 0.0 9.9 26.4 39.9 0.0 Sup-R-10.4 10.4 0.0 4.6 2.0 0.0 9.9 26.9 40.6 -0.0 ---PRESTRESS LOSS COMPUTATIONS ( Length = 50.00 ft Loss computed at 25.00 ft) A. Final Loss (Re: PCI Design Handbook, 5th Ed, p.4-64) :
Kcir = 0.9 Eci,ksi = 4066.8 Mbm,kft = 129.7 A,in2 = 401.0 Kes = 1.0 Eps,ksi = 29000 Mll,kft = 118.3 I,in4 = 20985
Pi,k = 247.9 ecc,in = 14.4 fcir,psi = 1692.4 (Eq 4.7.3) ES,psi = Kes * Eps * fcir / Eci = 12068.6 (Eq 4.7.2) Kcr = 2.0 Ec,ksi = 4496 Shoring = NONE fcds,psi = 574.2 (Mod. Eq 4.7.5) CR,psi = Kcr * (Es / Ec) * (fcir - fcds) = 14424.8 (Eq 4.7.4) Ksh = 1.0 V/S ratio = 1.43 RH = 75%
Evaluation Copy
Company Name PHONE: 813 555 5555 | SHEET 5 OF 14 Address Here City, ST 12345 | JOB NO. 001 PROGRAM: Presto v. 8.6.0 LEAP Software Inc., Tampa, Fl | BY Lea DATE Oct, 2004 PHONE : TOLL-FREE 1-800-451-5327 TAMPA AREA: 813-985-9170 | CKD. DATE
---PROJECT: Tutor 1 for Presto
SH,psi = (8.2E-6) * Ksh * Es * (1 -0.06* V/S) * (100 - RH) = 5434.3 (Eq 4.7.6) Tendon type: LOW RELAXATION fpu,ksi = 270.0 Kre = 5000 J = 0.040 (Table 4.7.1) C = 1.00 fpi/fpu = 0.75 fpi,ksi = 202.5 Aps,in2 = 1.224
RE,psi = [ Kre - J * (SH + CR + ES) ] * C = 3722.9 (Eq 4.7.7) B. Release Loss (Re: PCI JR 162, Sec 2.7, p.9) :
fst,psi = 202500.0 fpy,psi = 243000.0 (also ACI Comm Sec 18.5)
fst/fpy - 0.55 = 0.283 24t = 1 hrs 24t1 = 24 hrs RE,psi = 1759.8 (Eqs 16,17) Long term: 24t1 = 100000 hrs RE,psi = 6375.0 (Eqs 16,17) RE adjusted,psi = 1759.77 * 3722.89 / 6375.00 = 1027.68
---PRESTRESS LOSS SUMMARY (Computed)
Item Release,psi Final,psi Elastic Shortening ES 12068.6 ( 5.96%) ES 12068.6 ( 5.96%) Relaxation RE 1027.7 ( 0.51%) RE 3722.9 ( 1.84%) Creep --- CR 14424.8 ( 7.12%) Shrinkage --- SH 5434.3 ( 2.68%) Total loss 13096.3 ( 6.47%) 35650.6 (17.61%)
---Evaluation Copy
Output
Company Name PHONE: 813 555 5555 | SHEET 6 OF 14 Address Here City, ST 12345 | JOB NO. 001 PROGRAM: Presto v. 8.6.0 LEAP Software Inc., Tampa, Fl | BY Lea DATE Oct, 2004 PHONE : TOLL-FREE 1-800-451-5327 TAMPA AREA: 813-985-9170 | CKD. DATE
Evaluation Copy
Company Name PHONE: 813 555 5555 | SHEET 7 OF 14 Address Here City, ST 12345 | JOB NO. 001 PROGRAM: Presto v. 8.6.0 LEAP Software Inc., Tampa, Fl | BY Lea DATE Oct, 2004 PHONE : TOLL-FREE 1-800-451-5327 TAMPA AREA: 813-985-9170 | CKD. DATE
---PROJECT: Tutor 1 for Presto
Bottom 0 0 0 0 0 0 0 Total (Prestress + All DL + Sustained LL)
Topping 4 38 0 52 50 39 4 Top 13 281 452 279 331 301 15 Bottom 1313 1077 892 1012 925 1030 1309 Live Load
Topping 21 191 0 259 249 193 21 Top 20 183 543 248 238 184 20 Bottom -79 -731 -1160 -991 -952 -737 -79 Total (Prestress + All DL + All LL)
Topping 25 229 0 311 299 231 25 Top 33 464 995 527 569 486 35 Bottom 1234 347 -268 20 -27 294 1229
---Evaluation Copy
Output
Company Name PHONE: 813 555 5555 | SHEET 8 OF 14 Address Here City, ST 12345 | JOB NO. 001 PROGRAM: Presto v. 8.6.0 LEAP Software Inc., Tampa, Fl | BY Lea DATE Oct, 2004 PHONE : TOLL-FREE 1-800-451-5327 TAMPA AREA: 813-985-9170 | CKD. DATE
---CRACKING LOAD (ACI Sec 18.8.3)
Auto detection
Bottom - max at 20.00 ft Mcr = 327.09 k-ft pMn = 482.11 k-ft
pMn/Mcr = 1.47 fr = 556.43 psi (ACI Sec 9.5.2.3) NOTE: Use Formulae compatible with Presto 8.2 and older to generate
Strand Stress/Strain model.
---Evaluation Copy
Company Name PHONE: 813 555 5555 | SHEET 9 OF 14 Address Here City, ST 12345 | JOB NO. 001 PROGRAM: Presto v. 8.6.0 LEAP Software Inc., Tampa, Fl | BY Lea DATE Oct, 2004 PHONE : TOLL-FREE 1-800-451-5327 TAMPA AREA: 813-985-9170 | CKD. DATE
Units: Av+2At,min -> in2/ft; Av+2At -> in2/ft; Av-prvd -> in2/ft
Evaluation Copy
Output
Company Name PHONE: 813 555 5555 | SHEET 10 OF 14 Address Here City, ST 12345 | JOB NO. 001 PROGRAM: Presto v. 8.6.0 LEAP Software Inc., Tampa, Fl | BY Lea DATE Oct, 2004 PHONE : TOLL-FREE 1-800-451-5327 TAMPA AREA: 813-985-9170 | CKD. DATE
---PROJECT: Tutor 1 for Presto
Ahs,in2/ft 0.09 0.09 0.00 0.09 0.09 0.09 0.09 Ahr,in2/ft 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Units: Vnh,max -> k; Avh,min -> in2/ft
---Evaluation Copy
Company Name PHONE: 813 555 5555 | SHEET 11 OF 14 Address Here City, ST 12345 | JOB NO. 001 PROGRAM: Presto v. 8.6.0 LEAP Software Inc., Tampa, Fl | BY Lea DATE Oct, 2004 PHONE : TOLL-FREE 1-800-451-5327 TAMPA AREA: 813-985-9170 | CKD. DATE
---BI-LINEAR COMPUTATIONS (Ref: Branson and Trost, PCI Journal Sep/Oct 1982)
Ig, in4 = 27491 *NOTE: Positive deflection is up, negative deflection is down.
Evaluation Copy
Output
Company Name PHONE: 813 555 5555 | SHEET 12 OF 14 Address Here City, ST 12345 | JOB NO. 001 PROGRAM: Presto v. 8.6.0 LEAP Software Inc., Tampa, Fl | BY Lea DATE Oct, 2004 PHONE : TOLL-FREE 1-800-451-5327 TAMPA AREA: 813-985-9170 | CKD. DATE
Strands: 8.00 Draped Strands: 6.00 Profile: SYMMETRICAL - ONE POINT L1,ft = 0.00 L2,ft = 25.00 R1,ft = 0.00 R2,ft = 25.00
Evaluation Copy
Company Name PHONE: 813 555 5555 | SHEET 13 OF 14 Address Here City, ST 12345 | JOB NO. 001 PROGRAM: Presto v. 8.6.0 LEAP Software Inc., Tampa, Fl | BY Lea DATE Oct, 2004 PHONE : TOLL-FREE 1-800-451-5327 TAMPA AREA: 813-985-9170 | CKD. DATE
---PROJECT: Tutor 1 for Presto
Self Wt : -0.69 -1.17 -1.52 Self Wt : 1.85 2.40 DL-Prec : 0.00 DL : 3.00 Topping : -0.52 Topping : 2.30 SD-Comp : -0.27
SL-Sust L : 0.00 LL-Live : -0.44 TOTAL : 0.84 1.45 0.46
Evaluation Copy
Output
Company Name PHONE: 813 555 5555 | SHEET 14 OF 14 Address Here City, ST 12345 | JOB NO. 001 PROGRAM: Presto v. 8.6.0 LEAP Software Inc., Tampa, Fl | BY Lea DATE Oct, 2004 PHONE : TOLL-FREE 1-800-451-5327 TAMPA AREA: 813-985-9170 | CKD. DATE
Description : Double Tee example with openings and different thickness topping in r : egions ---MATERIAL REQUIRED ( per member )
Concrete : 5.16 Cubic Yards Strand : 400.00 Linear Feet
---Evaluation Copy
Theory
This chapter explains some of the assumptions and procedures of PRESTO in greater detail than found elsewhere in this manual. Unless otherwise stated, references in this manual refer to the Building Code Requirements for Reinforced Concrete (ACI 318-99) and the Building Code Requirements for Reinforced Concrete (ACI 318-05). Separate sections are provided for methodologies where the two codes are significantly different. We have provided common sections where the methodologies are similar. Design code references that are the same and apply to both codes are listed as ACI 318-99/05. Code references for CSA A23.3-94 with 2001 revisions are provided separately.
When a requirement applies to only one code, the appropriate reference is listed.