Here's a strength based figher I made:
Smash 'Em Rogue (Fighter 12/Rogue 2/Assassin 8/FB 8)
Race: Tiefling
Alignment: Non Lawful Evil
OC 1-30
God: No god
I didn't find many other high AB non-duelwielding build. I'll link a duelwielder for comparison, but that is a DW and doesn't have frenzied berserker. Dirty Fighter.
Advantages
4d6 Death Attack 1d6 sneak 3/2/2 attacks during frenzy so 3 DAs in first segment
Great Frenzy and Supreme Cleave
Full Stealth and HIPs
Rogue Lock and Traps Handling
Decent (but not tops) AB via fighter
Damage Sneak Immunes via Enhanced/Improved Power attack + Epic Weapon Specialization
Disadvantages
Frenzy is not so great with the +12 cap to str boosts (does stack with bulls strength/belt)
Not greatest saves
AC could be better
Missing some useful skills but you can drop the lock/traps and get em
Base Attributes
STR 18
DEX 16
CON 12
INT 16
WIS 8
CHA 6
Final Level Distribution
Rogue 2
Fighter 12
Assassin 8
Frenzied Berserker 8
Attribute Bonuses
4, 8, 12, 16, 20, 24, 28 increase STR
Leveling Guide and Feat Distribution
Level 1: Rogue 1: Bully, Able Learner
Level 2: Fighter 1: Weapon Focus (Scimitar)*, {Tower Shield}
Level 3: Fighter 2: Power Attack, Cleave*
Level 4: Fighter 3
Level 5: Fighter 4: Weapon Specialization (Scimitar)*
Level 6: Assassin 1: Blindfight, {Use Poison}
Level 7: Assassin 2: {Uncanny Dodge, Ghostly Visage, Poison Save I}
Level 8: Assassin 3
Level 9: Assassin 4: Great Cleave, {Poison Save II}
Level 10: FB 1: {Toughness, Frenzy}
Level 11: Assassin 5: {Improved Uncanny Dodge, Darkness}
Level 12: Assassin 6: Extra Rage, {Poison Save III}
Level 13: Assassin 7: {Invisibility}
Level 14: Assassin 8: {HIPS, Poison Save IV}
Level 15: FB 2: Extended Rage, {Supreme Cleave}
Level 16: FB 3: {Frenzy 2}
Level 17: FB 4: {Deathless Frenzy}
Level 18: FB 5: Improved Power Attack, {Frenzy 3, Enhanced Power Attack}
Level 19: Rogue 2: {Evasion}
Level 20: Fighter 5
Level 21: Fighter 6: Epic Prowess*, Great Strength I
Level 22: Fighter 7
Level 23: Fighter 8: Greater Weapon Focus (Scimitar)*, Epic Weapon Focus (Scimitar)
Level 24: Fighter 9
Level 25: Fighter 10: Expose Weakness*, Armor Skin
Level 26: Fighter 11
Level 27: Fighter 12: Greater Weapon Specialization (Scimitar)*, EWS (Scimitar)
Level 28: FB 6: {Inspire Frenzy I}
Level 29: FB 7: Epic Toughness, {Frenzy IV}
Level 30: FB 8: {Inspire Frenzy II, Great Frenzy}
Take more Great Strengths if you wish. You can take 3 and lose two of: Expose Weakness, Armor Skin, Epic Toughness, EWS or take 5 and lose all those feats. So you can be a nuanced moderately strong warrior or a 30 strength less feat warrior or in between. I would take 3 GS and lose Epic Toughness and EWS personally. Another option is to take only 5 levels of FB and pick up an extra 1 of those feats by taking 1 rogue and 2 more fighter levels.
Final Attributes
STR 26
DEX 16
CON 12
INT 16
WIS 10
CHA 8
BAB 27
40/35/30/25/20/15 (mundane scimitar)
* +7 scimitar with elemental, keen, holy, whatever
* +8 str belt for another 4 AB
* frenzy if no access to str belt for 1 extra attack, +10 str, and damage to him each round (6)
Damage (presenting mundane stats) crit 17-20 x2
1d6 + 14 scimitar and shield
1d6 + 18 scimitar
1d6 + 19 scimitar and shield PA
1d6 + 28 scimitar PA
1d6 + 24 scimitar and shield IPA
1d6 + 38 scimitar IPA
*+7 scimitar with keen, element, holy, whatever
* +8 str belt
* total +12 str while frenzying (or 10 if no belt/bulls)
* additional damage due to death- (4d6) and sneak- (1d6) attacks: avg damage 17.5 per hit
AC 15 naked
18 studded leather
19 studded leather and small shield
20 mithril breastplate
22 mithril breastplate and mithril heavy shield
Other potential bonuses: +7 dodge boots (if available to class), +7 deflection ring, +8 dex for a bonus of 2 AC wearing mithril breastplate, +7 armor, +7 nat ammy, +7 shield
Top AC (with all that): 59
Also a HIPster if in a mess.
Final Saves
Fortitude 18
Reflex 17
Will 7
+1 from Spellcraft Vs Spells
Hitpoints: 366
Skillpoints: 211
Disable Device 33, Hide 33, Move Silently 33, Open Lock 33, Spellcraft 5, Search 33, Spot 21, Set Trap 4, Tumble 10, Use Magic Device 4
Skillpoint Distribution
Level 1: Dd 4, Hi 4, Ms 4, Ol 4, Sc 2[xclass], Se 4, Sp 4, St 4, Tu 4, UMD 4, save 4
Level 2: Dd 1, Hi 1, Ms 1, Ol 1, Se 1, Sp 1, Tu 1, save 2
Level 3: Dd 1, Hi 1, Ms 1, Ol 1, Se 1, Sp 1, Tu 1
Level 4: Dd 1, Hi 1, Ms 1, Ol 1, Se 1
Level 5: Dd 1, Hi 1, Ms 1, Ol 1, Se 1
Level 6: Dd 1, Hi 1, Ms 1, Ol 1, Se 1, Tu 2
Level 7: Dd 1, Hi 1, Ms 1, Ol 1, Se 1, Tu 2
Level 8: Dd 1, Hi 1, Ms 1, Ol 1, Se 1, Sc 2
Level 9: Dd 1, Hi 1, Ms 1, Ol 1, Se 1, Sc 1, Sp 1
Level 10: Dd 1, Hi 1, Ms 1, Ol 1, Se 1
Level 11: Dd 1, Hi 1, Ms 1, Ol 1, Se 1, Sp 2
Level 12: Dd 1, Hi 1, Ms 1, Ol 1, Se 1, Sp 2
Level 13: Dd 1, Hi 1, Ms 1, Ol 1, Se 1, Sp 2
Level 14: Dd 1, Hi 1, Ms 1, Ol 1, Se 1, Sp 2
Level 15: Dd 1, Hi 1, Ms 1, Ol 1, Se 1
Level 16: Dd 1, Hi 1, Ms 1, Ol 1, Se 1
Level 17: Dd 1, Hi 1, Ms 1, Ol 1, Se 1
Level 18: Dd 1, Hi 1, Ms 1, Ol 1, Se 1
Level 19: Dd 1, Hi 1, Ms 1, Ol 1, Se 1, Sp 6
Level 20: Dd 1, Hi 1, Ms 1, Ol 1, Se 1
Level 21: Dd 1, Hi 1, Ms 1, Ol 1, Se 1
Level 22: Dd 1, Hi 1, Ms 1, Ol 1, Se 1
Level 23: Dd 1, Hi 1, Ms 1, Ol 1, Se 1
Level 24: Dd 1, Hi 1, Ms 1, Ol 1, Se 1
Level 25: Dd 1, Hi 1, Ms 1, Ol 1, Se 1
Level 26: Dd 1, Hi 1, Ms 1, Ol 1, Se 1
Level 27: Dd 1, Hi 1, Ms 1, Ol 1, Se 1
Level 28: Dd 1, Hi 1, Ms 1, Ol 1, Se 1
Level 29: Dd 1, Hi 1, Ms 1, Ol 1, Se 1
Level 30: Dd 1, Hi 1, Ms 1, Ol 1, Se 1